Merge branch 'master' into feat-network-rebuild

.gitignore

@@ -16,7 +16,6 @@ docs/_build
 draft
 cppcheck.xml
 /target/
-Cargo.lock
 .cache
 compile_commands.json
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kernel/Cargo.toml

@@ -106,4 +106,4 @@ debug = true   # Controls whether the compiler passes `-g`
 
 # The release profile, used for `cargo build --release`
 [profile.release]
-debug = true
+debug = false

kernel/Makefile

@@ -20,7 +20,6 @@ all:
 	
 
 clean:
-	rm -f Cargo.lock
 	$(MAKE) -C src clean ARCH=$(ARCH)
 
 .PHONY: fmt

kernel/crates/rust-slabmalloc/src/lib.rs

@@ -18,6 +18,7 @@
 //! # Implementing GlobalAlloc
 //! See the [global alloc](https://github.com/gz/rust-slabmalloc/tree/master/examples/global_alloc.rs) example.
 #![allow(unused_features)]
+#![cfg_attr(test, feature(test, c_void_variant))]
 #![no_std]
 #![crate_name = "slabmalloc"]
 #![crate_type = "lib"]
@@ -33,8 +34,18 @@ pub use pages::*;
 pub use sc::*;
 pub use zone::*;
 
+#[cfg(test)]
+#[macro_use]
+extern crate std;
+#[cfg(test)]
+extern crate test;
+
+#[cfg(test)]
+mod tests;
+
 use core::alloc::Layout;
 use core::fmt;
+use core::mem;
 use core::ptr::{self, NonNull};
 
 use log::trace;
@@ -71,7 +82,6 @@ pub unsafe trait Allocator<'a> {
         layout: Layout,
         slab_callback: &'static dyn CallBack,
     ) -> Result<(), AllocationError>;
-
     /// Refill the allocator with a [`ObjectPage`].
     ///
     /// # Safety

kernel/crates/rust-slabmalloc/src/pages.rs

@@ -1,11 +1,6 @@
-use alloc::boxed::Box;
-
 use crate::*;
-use core::{
-    mem,
-    sync::atomic::{AtomicU64, Ordering},
-};
-
+use alloc::boxed::Box;
+use core::sync::atomic::{AtomicU64, Ordering};
 /// A trait defining bitfield operations we need for tracking allocated objects within a page.
 pub(crate) trait Bitfield {
     fn initialize(&mut self, for_size: usize, capacity: usize);
@@ -38,7 +33,7 @@ impl Bitfield for [AtomicU64] {
     fn initialize(&mut self, for_size: usize, capacity: usize) {
         // Set everything to allocated
         for bitmap in self.iter_mut() {
-            *bitmap = AtomicU64::new(u64::MAX);
+            *bitmap = AtomicU64::new(u64::max_value());
         }
 
         // Mark actual slots as free
@@ -59,12 +54,9 @@ impl Bitfield for [AtomicU64] {
         layout: Layout,
         page_size: usize,
     ) -> Option<(usize, usize)> {
-        let start_offset = get_offset_for_align(layout);
-        let data_start = base_addr + start_offset;
-
         for (base_idx, b) in self.iter().enumerate() {
             let bitval = b.load(Ordering::Relaxed);
-            if bitval == u64::MAX {
+            if bitval == u64::max_value() {
                 continue;
             } else {
                 let negated = !bitval;
@@ -79,7 +71,7 @@ impl Bitfield for [AtomicU64] {
                     return None;
                 }
 
-                let addr: usize = data_start + offset;
+                let addr: usize = base_addr + offset;
                 let alignment_ok = addr % layout.align() == 0;
                 let block_is_free = bitval & (1 << first_free) == 0;
                 if alignment_ok && block_is_free {
@@ -125,7 +117,7 @@ impl Bitfield for [AtomicU64] {
     #[inline(always)]
     fn is_full(&self) -> bool {
         self.iter()
-            .filter(|&x| x.load(Ordering::Relaxed) != u64::MAX)
+            .filter(|&x| x.load(Ordering::Relaxed) != u64::max_value())
             .count()
             == 0
     }
@@ -157,32 +149,6 @@ impl Bitfield for [AtomicU64] {
     }
 }
 
-/// # get_offset_for_align - 根据布局大小获取page内对齐偏移量
-///
-/// 这个函数根据给定的`Layout`大小确定一个合适的对齐偏移量。
-///
-/// ## 参数
-///
-/// - layout: Layout，这是需要计算对齐偏移量的布局参数。
-///
-/// ## 返回值
-///
-/// - usize: 成功时返回一个usize类型的对齐偏移量。
-fn get_offset_for_align(layout: Layout) -> usize {
-    match layout.size() {
-        0..=8 => 80,
-        9..=16 => 80,
-        17..=32 => 96,
-        33..=64 => 128,
-        65..=128 => 128,
-        129..=256 => 256,
-        257..=512 => 512,
-        513..=1024 => 1024,
-        1025..=2048 => 2048,
-        _ => panic!(),
-    }
-}
-
 /// This trait is used to define a page from which objects are allocated
 /// in an `SCAllocator`.
 ///
@@ -242,8 +208,7 @@ pub trait AllocablePage {
             ptr,
             layout
         );
-        let align_offset = get_offset_for_align(layout);
-        let page_offset = ((ptr.as_ptr() as usize) - align_offset) & (Self::SIZE - 1);
+        let page_offset = (ptr.as_ptr() as usize) & (Self::SIZE - 1);
         assert!(page_offset % layout.size() == 0);
         let idx = page_offset / layout.size();
         assert!(
@@ -282,20 +247,20 @@ pub trait AllocablePage {
 /// It is marked `repr(C)` because we rely on a well defined order of struct
 /// members (e.g., dealloc does a cast to find the bitfield).
 #[repr(C)]
+#[repr(align(4096))]
 pub struct ObjectPage<'a> {
+    /// Holds memory objects.
     #[allow(dead_code)]
-    /// A bit-field to track free/allocated memory within `data`.
-    pub(crate) bitfield: [AtomicU64; 8],
+    data: [u8; OBJECT_PAGE_SIZE - OBJECT_PAGE_METADATA_OVERHEAD],
 
     /// Next element in list (used by `PageList`).
     next: Rawlink<ObjectPage<'a>>,
     /// Previous element in  list (used by `PageList`)
     prev: Rawlink<ObjectPage<'a>>,
 
-    /// Holds memory objects.
-    data: [u8; OBJECT_PAGE_SIZE - OBJECT_PAGE_METADATA_OVERHEAD],
+    /// A bit-field to track free/allocated memory within `data`.
+    pub(crate) bitfield: [AtomicU64; 8],
 }
-
 impl<'a> ObjectPage<'a> {
     pub fn new() -> Box<ObjectPage<'a>> {
         unsafe { Box::new_uninit().assume_init() }
@@ -303,10 +268,10 @@ impl<'a> ObjectPage<'a> {
 }
 
 // These needs some more work to be really safe...
-unsafe impl Send for ObjectPage<'_> {}
-unsafe impl Sync for ObjectPage<'_> {}
+unsafe impl<'a> Send for ObjectPage<'a> {}
+unsafe impl<'a> Sync for ObjectPage<'a> {}
 
-impl AllocablePage for ObjectPage<'_> {
+impl<'a> AllocablePage for ObjectPage<'a> {
     const SIZE: usize = OBJECT_PAGE_SIZE;
 
     fn bitfield(&self) -> &[AtomicU64; 8] {
@@ -331,7 +296,7 @@ impl<'a> Default for ObjectPage<'a> {
     }
 }
 
-impl fmt::Debug for ObjectPage<'_> {
+impl<'a> fmt::Debug for ObjectPage<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "ObjectPage")
     }
@@ -424,7 +389,6 @@ impl<'a, T: AllocablePage> PageList<'a, T> {
     }
 
     /// Removes `slab_page` from the list.
-    #[allow(clippy::manual_inspect)]
     pub(crate) fn pop<'b>(&'b mut self) -> Option<&'a mut T> {
         match self.head {
             None => None,
@@ -468,7 +432,6 @@ impl<'a, P: AllocablePage + 'a> Iterator for ObjectPageIterMut<'a, P> {
     type Item = &'a mut P;
 
     #[inline]
-    #[allow(clippy::manual_inspect)]
     fn next(&mut self) -> Option<&'a mut P> {
         unsafe {
             self.head.resolve_mut().map(|next| {

kernel/crates/rust-slabmalloc/src/sc.rs

@@ -1,7 +1,5 @@
 //! A SCAllocator that can allocate fixed size objects.
 
-use core::mem;
-
 use crate::*;
 
 /// A genius(?) const min()
@@ -73,7 +71,7 @@ macro_rules! new_sc_allocator {
         SCAllocator {
             size: $size,
             allocation_count: 0,
-            obj_per_page,
+            obj_per_page: obj_per_page,
             empty_slabs: PageList::new(),
             slabs: PageList::new(),
             full_slabs: PageList::new(),
@@ -235,6 +233,10 @@ impl<'a, P: AllocablePage> SCAllocator<'a, P> {
             }
         }
 
+        self.free_obj_count = self
+            .free_obj_count
+            .saturating_sub(reclaimed * self.obj_per_page);
+
         reclaimed
     }
 
@@ -247,7 +249,6 @@ impl<'a, P: AllocablePage> SCAllocator<'a, P> {
             .initialize(self.size, P::SIZE - OBJECT_PAGE_METADATA_OVERHEAD);
         *page.prev() = Rawlink::none();
         *page.next() = Rawlink::none();
-        trace!("adding page to SCAllocator {:p}", page);
         self.insert_empty(page);
         self.free_obj_count += self.obj_per_page;
     }
@@ -314,15 +315,13 @@ impl<'a, P: AllocablePage> SCAllocator<'a, P> {
     /// May return an error in case an invalid `layout` is provided.
     /// The function may also move internal slab pages between lists partial -> empty
     /// or full -> partial lists.
-    ///
     /// # Safety
     /// The caller must ensure that the `layout` is valid.
     pub unsafe fn deallocate(
         &mut self,
         ptr: NonNull<u8>,
         layout: Layout,
-        slab_callback: &'static dyn CallBack,
-    ) -> Result<(), AllocationError> {
+    ) -> Result<bool, AllocationError> {
         assert!(layout.size() <= self.size);
         assert!(self.size <= (P::SIZE - OBJECT_PAGE_METADATA_OVERHEAD));
         trace!(
@@ -342,17 +341,16 @@ impl<'a, P: AllocablePage> SCAllocator<'a, P> {
 
         let ret = slab_page.deallocate(ptr, new_layout);
         debug_assert!(ret.is_ok(), "Slab page deallocate won't fail at the moment");
+
         self.free_obj_count += 1;
         let is_empty_after_dealloc = slab_page.is_empty(self.obj_per_page);
 
+        let mut need_reclaim = false;
         // 如果slab_page是空白的，且空闲块数大于free_limit，将slab_page归还buddy
         if self.free_obj_count >= self.free_limit && is_empty_after_dealloc {
-            self.slabs.remove_from_list(slab_page);
-            // 将slab_page归还buddy
-            slab_callback.free_slab_page(slab_page as *const P as *mut u8, P::SIZE);
+            need_reclaim = true;
         }
-        self.check_page_assignments();
 
-        ret
+        ret.map(|_| need_reclaim)
     }
 }

kernel/crates/rust-slabmalloc/src/tests.rs

@@ -0,0 +1,582 @@
+use env_logger;
+use rand;
+use std::alloc;
+use std::alloc::Layout;
+use std::collections::HashSet;
+use std::mem::{size_of, transmute};
+use std::prelude::v1::*;
+
+use crate::*;
+use test::Bencher;
+
+/// A simple page allocator based on GlobalAlloc (for testing purposes).
+struct Pager {
+    base_pages: HashSet<*mut u8>, // probably should be hash-tables
+}
+
+unsafe impl Send for Pager {}
+unsafe impl Sync for Pager {}
+
+impl Pager {
+    pub fn new() -> Pager {
+        Pager {
+            base_pages: HashSet::with_capacity(1024),
+        }
+    }
+}
+
+impl Pager {
+    pub fn currently_allocated(&self) -> usize {
+        self.base_pages.len()
+    }
+
+    fn alloc_page(&mut self, page_size: usize) -> Option<*mut u8> {
+        let r =
+            unsafe { std::alloc::alloc(Layout::from_size_align(page_size, page_size).unwrap()) };
+
+        if !r.is_null() {
+            match page_size {
+                OBJECT_PAGE_SIZE => self.base_pages.insert(r),
+                _ => unreachable!("invalid page-size supplied"),
+            };
+            Some(r)
+        } else {
+            None
+        }
+    }
+
+    fn dealloc_page(&mut self, ptr: *mut u8, page_size: usize) {
+        let layout = match page_size {
+            OBJECT_PAGE_SIZE => {
+                assert!(
+                    self.base_pages.contains(&ptr),
+                    "Trying to deallocate invalid base-page"
+                );
+                self.base_pages.remove(&ptr);
+                Layout::from_size_align(OBJECT_PAGE_SIZE, OBJECT_PAGE_SIZE).unwrap()
+            }
+
+            _ => unreachable!("invalid page-size supplied"),
+        };
+
+        unsafe { std::alloc::dealloc(ptr, layout) };
+    }
+}
+
+trait PageProvider<'a>: Send {
+    fn allocate_page(&mut self) -> Option<&'a mut ObjectPage<'a>>;
+    fn release_page(&mut self, page: &'a mut ObjectPage<'a>);
+}
+
+impl<'a> PageProvider<'a> for Pager {
+    /// Allocates a new ObjectPage from the system.
+    ///
+    /// Uses `mmap` to map a page and casts it to a ObjectPage.
+    fn allocate_page(&mut self) -> Option<&'a mut ObjectPage<'a>> {
+        self.alloc_page(OBJECT_PAGE_SIZE)
+            .map(|r| unsafe { transmute(r as usize) })
+    }
+
+    /// Release a ObjectPage back to the system.slab_page
+    ///
+    /// Uses `munmap` to release the page back to the OS.
+    fn release_page(&mut self, p: &'a mut ObjectPage<'a>) {
+        self.dealloc_page(p as *const ObjectPage as *mut u8, OBJECT_PAGE_SIZE);
+    }
+}
+
+#[test]
+fn check_size() {
+    assert_eq!(
+        OBJECT_PAGE_SIZE as usize,
+        size_of::<ObjectPage>(),
+        "ObjectPage should be exactly the size of a single page."
+    );
+}
+
+#[test]
+fn test_mmap_allocator() {
+    let mut mmap = Pager::new();
+
+    match mmap.allocate_page() {
+        Some(sp) => {
+            sp.bitfield.initialize(8, OBJECT_PAGE_SIZE - 80);
+            assert!(!sp.is_full(), "Got empty slab");
+            assert!(sp.is_empty(6 * 64), "Got empty slab");
+            mmap.release_page(sp)
+        }
+        None => panic!("failed to allocate ObjectPage"),
+    }
+}
+
+macro_rules! test_sc_allocation {
+    ($test:ident, $size:expr, $alignment:expr, $allocations:expr, $type:ty) => {
+        #[test]
+        fn $test() {
+            let _ = env_logger::try_init();
+            let mut mmap = Pager::new();
+            {
+                let mut sa: SCAllocator<$type> = SCAllocator::new($size);
+                let alignment = $alignment;
+
+                let mut objects: Vec<NonNull<u8>> = Vec::new();
+                let mut vec: Vec<(usize, &mut [usize; $size / 8])> = Vec::new();
+                let layout = Layout::from_size_align($size, alignment).unwrap();
+
+                for _ in 0..$allocations {
+                    loop {
+                        match sa.allocate(layout) {
+                            // Allocation was successful
+                            Ok(nptr) => {
+                                unsafe {
+                                    vec.push((rand::random::<usize>(), transmute(nptr.as_ptr())))
+                                };
+                                objects.push(nptr);
+                                break;
+                            }
+                            // Couldn't allocate need to refill first
+                            Err(AllocationError::OutOfMemory) => {
+                                let page = mmap.allocate_page().unwrap();
+                                unsafe {
+                                    sa.refill(page);
+                                }
+                            }
+                            // Unexpected errors
+                            Err(AllocationError::InvalidLayout) => unreachable!("Unexpected error"),
+                        }
+                    }
+                }
+
+                // Write the objects with a random pattern
+                for item in vec.iter_mut() {
+                    let (pattern, ref mut obj) = *item;
+                    assert!(obj.len() == $size / 8);
+                    for i in 0..obj.len() {
+                        obj[i] = pattern;
+                    }
+                }
+
+                for item in vec.iter() {
+                    let (pattern, ref obj) = *item;
+                    for i in 0..obj.len() {
+                        assert_eq!(
+                            obj[i], pattern,
+                            "No two allocations point to the same memory."
+                        );
+                    }
+                }
+
+                // Make sure we can correctly deallocate:
+                let pages_allocated = sa.slabs.elements;
+
+                // Deallocate all the objects
+                for item in objects.iter_mut() {
+                    unsafe {
+                        sa.deallocate(*item, layout).expect("Can't deallocate");
+                    }
+                }
+
+                objects.clear();
+                sa.check_page_assignments();
+
+                // then allocate everything again,
+                for _ in 0..$allocations {
+                    loop {
+                        match sa.allocate(layout) {
+                            // Allocation was successful
+                            Ok(nptr) => {
+                                unsafe {
+                                    vec.push((rand::random::<usize>(), transmute(nptr.as_ptr())))
+                                };
+                                objects.push(nptr);
+                                break;
+                            }
+                            // Couldn't allocate need to refill first
+                            Err(AllocationError::OutOfMemory) => {
+                                let page = mmap.allocate_page().unwrap();
+                                unsafe {
+                                    sa.refill(page);
+                                }
+                            }
+                            // Unexpected errors
+                            Err(AllocationError::InvalidLayout) => unreachable!("Unexpected error"),
+                        }
+                    }
+                }
+
+                // and make sure we do not request more pages than what we had previously
+                // println!("{} {}", pages_allocated, sa.slabs.elements);
+                assert_eq!(
+                    pages_allocated, sa.slabs.elements,
+                    "Did not use more memory for 2nd allocation run."
+                );
+
+                // Deallocate everything once more
+                for item in objects.iter_mut() {
+                    unsafe {
+                        sa.deallocate(*item, layout).expect("Can't deallocate");
+                    }
+                }
+
+                // Drain the slab-allocator and give unused pages back to the OS
+                sa.try_reclaim_pages(usize::MAX, &mut |p: *mut ObjectPage| unsafe {
+                    mmap.release_page(&mut *p)
+                });
+            }
+
+            // Check that we released everything to our page allocator:
+            assert_eq!(
+                mmap.currently_allocated(),
+                0,
+                "Released all pages to the underlying memory manager."
+            );
+        }
+    };
+}
+
+test_sc_allocation!(op_512_size8_alignment1, 8, 1, 512, ObjectPage);
+test_sc_allocation!(op_4096_size8_alignment8, 8, 8, 4096, ObjectPage);
+test_sc_allocation!(op_500_size8_alignment64, 8, 64, 500, ObjectPage);
+test_sc_allocation!(op_4096_size12_alignment1, 12, 1, 4096, ObjectPage);
+test_sc_allocation!(op_4096_size13_alignment1, 13, 1, 4096, ObjectPage);
+test_sc_allocation!(op_2000_size14_alignment1, 14, 1, 2000, ObjectPage);
+test_sc_allocation!(op_4096_size15_alignment1, 15, 1, 4096, ObjectPage);
+test_sc_allocation!(op_8000_size16_alignment1, 16, 1, 8000, ObjectPage);
+test_sc_allocation!(op_1024_size24_alignment1, 24, 1, 1024, ObjectPage);
+test_sc_allocation!(op_3090_size32_alignment1, 32, 1, 3090, ObjectPage);
+test_sc_allocation!(op_4096_size64_alignment1, 64, 1, 4096, ObjectPage);
+test_sc_allocation!(op_1000_size512_alignment1, 512, 1, 1000, ObjectPage);
+test_sc_allocation!(op_4096_size1024_alignment1, 1024, 1, 4096, ObjectPage);
+test_sc_allocation!(op_10_size2048_alignment1, 2048, 1, 10, ObjectPage);
+test_sc_allocation!(op_10000_size512_alignment1, 512, 1, 10000, ObjectPage);
+
+#[test]
+#[should_panic]
+fn invalid_alignment() {
+    let _layout = Layout::from_size_align(10, 3).unwrap();
+}
+
+#[test]
+fn test_readme() -> Result<(), AllocationError> {
+    let object_size = 12;
+    let alignment = 4;
+    let layout = Layout::from_size_align(object_size, alignment).unwrap();
+
+    // We need something that can provide backing memory
+    // (4 KiB and 2 MiB pages) to our ZoneAllocator
+    // (see tests.rs for a dummy implementation).
+    let mut pager = Pager::new();
+    let page = pager.allocate_page().expect("Can't allocate a page");
+
+    let mut zone: ZoneAllocator = Default::default();
+    // Prematurely fill the ZoneAllocator with memory.
+    // Alternatively, the allocate call would return an
+    // error which we can capture to refill on-demand.
+    unsafe { zone.refill(layout, page)? };
+
+    let allocated = zone.allocate(layout)?;
+    unsafe { zone.deallocate(allocated, layout, &SlabCallback) }?;
+
+    Ok(())
+}
+
+#[test]
+fn test_readme2() -> Result<(), AllocationError> {
+    let object_size = 10;
+    let alignment = 8;
+    let layout = Layout::from_size_align(object_size, alignment).unwrap();
+
+    // We need something that can provide backing memory
+    // (4 KiB and 2 MiB pages) to our ZoneAllocator
+    // (see tests.rs for a dummy implementation).
+    let mut pager = Pager::new();
+    let page = pager.allocate_page().expect("Can't allocate a page");
+
+    let mut sa: SCAllocator<ObjectPage> = SCAllocator::new(object_size);
+    // Prematurely fill the SCAllocator with memory.
+    // Alternatively, the allocate call would return an
+    // error which we can capture to refill on-demand.
+    unsafe { sa.refill(page) };
+
+    sa.allocate(layout)?;
+    Ok(())
+}
+
+#[test]
+fn test_bug1() -> Result<(), AllocationError> {
+    let _ = env_logger::try_init();
+
+    let mut mmap = Pager::new();
+    let page = mmap.allocate_page();
+
+    let mut sa: SCAllocator<ObjectPage> = SCAllocator::new(8);
+    unsafe {
+        sa.refill(page.unwrap());
+    }
+
+    let ptr1 = sa.allocate(Layout::from_size_align(1, 1).unwrap())?;
+    let ptr2 = sa.allocate(Layout::from_size_align(2, 1).unwrap())?;
+    unsafe { sa.deallocate(ptr1, Layout::from_size_align(1, 1).unwrap()) }?;
+    let _ptr3 = sa.allocate(Layout::from_size_align(4, 1).unwrap())?;
+    unsafe {
+        sa.deallocate(ptr2, Layout::from_size_align(2, 1).unwrap())
+            .map(|_| ())
+    }
+}
+
+#[bench]
+fn slabmalloc_allocate_deallocate(b: &mut Bencher) {
+    let _ = env_logger::try_init();
+
+    let mut mmap = Pager::new();
+    let mut sa: SCAllocator<ObjectPage> = SCAllocator::new(8);
+    let layout = Layout::from_size_align(8, 1).unwrap();
+
+    let page = mmap.allocate_page();
+    unsafe {
+        sa.refill(page.unwrap());
+    }
+
+    let ptr = sa.allocate(layout).expect("Can't allocate");
+    test::black_box(ptr);
+    b.iter(|| {
+        let ptr = sa.allocate(layout).expect("Can't allocate");
+        test::black_box(ptr);
+        unsafe { sa.deallocate(ptr, layout).expect("Can't deallocate") };
+    });
+}
+
+#[bench]
+fn slabmalloc_allocate_deallocate_big(b: &mut Bencher) {
+    let _ = env_logger::try_init();
+
+    let mut mmap = Pager::new();
+    let mut sa: SCAllocator<ObjectPage> = SCAllocator::new(512);
+
+    let page = mmap.allocate_page();
+    unsafe {
+        sa.refill(page.unwrap());
+    }
+
+    let layout = Layout::from_size_align(512, 1).unwrap();
+    let ptr = sa.allocate(layout).expect("Can't allocate");
+    test::black_box(ptr);
+
+    b.iter(|| {
+        let ptr = sa.allocate(layout).expect("Can't allocate");
+        test::black_box(ptr);
+        unsafe { sa.deallocate(ptr, layout).expect("Can't deallocate") };
+    });
+}
+
+#[bench]
+fn jemalloc_allocate_deallocate(b: &mut Bencher) {
+    let layout = Layout::from_size_align(8, 1).unwrap();
+    let ptr = unsafe { alloc::alloc(layout) };
+    test::black_box(ptr);
+
+    b.iter(|| unsafe {
+        let ptr = alloc::alloc(layout);
+        test::black_box(ptr);
+        alloc::dealloc(ptr, layout);
+    });
+}
+
+#[bench]
+fn jemalloc_allocate_deallocate_big(b: &mut Bencher) {
+    let layout = Layout::from_size_align(512, 1).unwrap();
+    let ptr = unsafe { alloc::alloc(layout) };
+    test::black_box(ptr);
+
+    b.iter(|| unsafe {
+        let ptr = alloc::alloc(layout);
+        test::black_box(ptr);
+        alloc::dealloc(ptr, layout);
+    });
+}
+
+#[test]
+pub fn check_first_fit() {
+    let op: ObjectPage = Default::default();
+    let layout = Layout::from_size_align(8, 8).unwrap();
+    println!("{:?}", op.first_fit(layout));
+}
+
+#[test]
+fn list_pop() {
+    let mut op1: ObjectPage = Default::default();
+    let op1_ptr = &op1 as *const ObjectPage<'_>;
+    let mut op2: ObjectPage = Default::default();
+    let op2_ptr = &op2 as *const ObjectPage<'_>;
+    let mut op3: ObjectPage = Default::default();
+    let op3_ptr = &op3 as *const ObjectPage<'_>;
+    let mut op4: ObjectPage = Default::default();
+    let op4_ptr = &op4 as *const ObjectPage<'_>;
+
+    let mut list: PageList<ObjectPage> = PageList::new();
+    list.insert_front(&mut op1);
+    list.insert_front(&mut op2);
+    list.insert_front(&mut op3);
+
+    assert!(list.contains(op1_ptr));
+    assert!(list.contains(op2_ptr));
+    assert!(list.contains(op3_ptr));
+    assert!(!list.contains(op4_ptr));
+
+    let popped = list.pop();
+    assert_eq!(popped.unwrap() as *const ObjectPage, op3_ptr);
+    assert!(!list.contains(op3_ptr));
+
+    let popped = list.pop();
+    assert_eq!(popped.unwrap() as *const ObjectPage, op2_ptr);
+    assert!(!list.contains(op2_ptr));
+
+    list.insert_front(&mut op4);
+    assert!(list.contains(op4_ptr));
+    let popped = list.pop();
+    assert_eq!(popped.unwrap() as *const ObjectPage, op4_ptr);
+    assert!(!list.contains(op4_ptr));
+
+    let popped = list.pop();
+    assert_eq!(popped.unwrap() as *const ObjectPage, op1_ptr);
+    assert!(!list.contains(op1_ptr));
+
+    let popped = list.pop();
+    assert!(popped.is_none());
+
+    assert!(!list.contains(op1_ptr));
+    assert!(!list.contains(op2_ptr));
+    assert!(!list.contains(op3_ptr));
+    assert!(!list.contains(op4_ptr));
+}
+
+#[test]
+pub fn iter_empty_list() {
+    let mut new_head1: ObjectPage = Default::default();
+    let mut l = PageList::new();
+    l.insert_front(&mut new_head1);
+    for _p in l.iter_mut() {}
+}
+
+#[test]
+pub fn check_is_full_8() {
+    let _r = env_logger::try_init();
+    let layout = Layout::from_size_align(8, 1).unwrap();
+
+    let mut page: ObjectPage = Default::default();
+    page.bitfield.initialize(8, OBJECT_PAGE_SIZE - 80);
+    let obj_per_page = core::cmp::min((OBJECT_PAGE_SIZE - 80) / 8, 8 * 64);
+
+    let mut allocs = 0;
+    loop {
+        if page.allocate(layout).is_null() {
+            break;
+        }
+        allocs += 1;
+
+        if allocs < obj_per_page {
+            assert!(
+                !page.is_full(),
+                "Page mistakenly considered full after {} allocs",
+                allocs
+            );
+            assert!(!page.is_empty(obj_per_page));
+        }
+    }
+
+    assert_eq!(allocs, obj_per_page, "Can use all bitmap space");
+    assert!(page.is_full());
+}
+
+// Test for bug that reports pages not as full when
+// the entire bitfield wasn't allocated.
+#[test]
+pub fn check_is_full_512() {
+    let _r = env_logger::try_init();
+    let mut page: ObjectPage = Default::default();
+    page.bitfield.initialize(512, OBJECT_PAGE_SIZE - 80);
+    let layout = Layout::from_size_align(512, 1).unwrap();
+    let obj_per_page = core::cmp::min((OBJECT_PAGE_SIZE - 80) / 512, 6 * 64);
+
+    let mut allocs = 0;
+    loop {
+        if page.allocate(layout).is_null() {
+            break;
+        }
+
+        allocs += 1;
+
+        if allocs < (OBJECT_PAGE_SIZE - 80) / 512 {
+            assert!(!page.is_full());
+            assert!(!page.is_empty(obj_per_page));
+        }
+    }
+    assert!(page.is_full());
+}
+
+#[test]
+pub fn issue_9() -> Result<(), AllocationError> {
+    let mut pager = Pager::new();
+    let mut zone: ZoneAllocator = Default::default();
+
+    // size: 256 align: 1 | my pager gets called
+    let l1 = Layout::from_size_align(256, 1).unwrap();
+    assert!(zone.allocate(l1).is_err(), "my pager gets called");
+    let page = pager.allocate_page().expect("Can't allocate a page");
+    unsafe { zone.refill(l1, page)? };
+    let p1 = zone.allocate(l1)?;
+
+    // size: 48 align: 8 | my pager gets called
+    let l2 = Layout::from_size_align(48, 8).unwrap();
+    assert!(zone.allocate(l2).is_err(), "my pager gets called");
+    let page = pager.allocate_page().expect("Can't allocate a page");
+    unsafe { zone.refill(l2, page)? };
+    let p2 = zone.allocate(l2)?;
+    assert_eq!(p2.as_ptr() as usize % l2.align(), 0);
+    assert_ne!(p2, p1);
+
+    // size: 6 align: 1 | my pager gets called and returns the properly aligned address X
+    let l3 = Layout::from_size_align(6, 1).unwrap();
+    assert!(
+        zone.allocate(l3).is_err(),
+        "my pager gets called and returns the properly aligned address X"
+    );
+    let page = pager.allocate_page().expect("Can't allocate a page");
+    unsafe { zone.refill(l3, page)? };
+    let p3 = zone.allocate(l3)?;
+    assert_eq!(p3.as_ptr() as usize % l3.align(), 0);
+    assert_ne!(p3, p2);
+    assert_ne!(p3, p1);
+
+    //size: 8 align: 1 | my pager doesn't get called
+    let l4 = Layout::from_size_align(8, 1).unwrap();
+    // my pager doesn't get called
+    let p4 = zone.allocate(l4)?;
+    assert_eq!(p4.as_ptr() as usize % l4.align(), 0);
+    assert_ne!(p4, p3);
+    assert_ne!(p4, p2);
+    assert_ne!(p4, p1);
+
+    // size: 16 align: 1 | my pager gets called
+    let l5 = Layout::from_size_align(16, 1).unwrap();
+    assert!(zone.allocate(l5).is_err(), "my pager gets called");
+    let page = pager.allocate_page().expect("Can't allocate a page");
+    unsafe { zone.refill(l5, page)? };
+    let p5 = zone.allocate(l5)?;
+    assert_eq!(p5.as_ptr() as usize % l5.align(), 0);
+    assert_ne!(p5, p1);
+    assert_ne!(p5, p2);
+    assert_ne!(p5, p3);
+    assert_ne!(p5, p4);
+
+    Ok(())
+}
+
+/// 归还slab_page给buddy的回调
+struct SlabCallback;
+impl CallBack for SlabCallback {
+    unsafe fn free_slab_page(&self, base_addr: *mut u8, size: usize) {
+        assert_eq!(base_addr as usize & (OBJECT_PAGE_SIZE - 1), 0); // 确认地址4k对齐
+        assert_eq!(size, OBJECT_PAGE_SIZE); // 确认释放的slab_page大小
+    }
+}

kernel/crates/rust-slabmalloc/src/zone.rs

@@ -120,6 +120,7 @@ impl<'a> ZoneAllocator<'a> {
             // reclaim的page数
             let just_reclaimed = slab.try_reclaim_pages(to_reclaim, &mut dealloc);
             self.total -= (just_reclaimed * OBJECT_PAGE_SIZE) as u64;
+
             to_reclaim = to_reclaim.saturating_sub(just_reclaimed);
             if to_reclaim == 0 {
                 break;
@@ -177,7 +178,20 @@ unsafe impl<'a> crate::Allocator<'a> for ZoneAllocator<'a> {
         slab_callback: &'static dyn CallBack,
     ) -> Result<(), AllocationError> {
         match ZoneAllocator::get_slab(layout.size()) {
-            Slab::Base(idx) => self.small_slabs[idx].deallocate(ptr, layout, slab_callback),
+            Slab::Base(idx) => {
+                let r = self.small_slabs[idx].deallocate(ptr, layout);
+                if let Ok(true) = r {
+                    self.small_slabs[idx].try_reclaim_pages(
+                        1,
+                        &mut |slab_page: *mut ObjectPage| {
+                            // 将slab_page归还buddy
+                            slab_callback
+                                .free_slab_page(slab_page as *const _ as *mut u8, ObjectPage::SIZE);
+                        },
+                    );
+                }
+                r.map(|_| ())
+            }
             Slab::Unsupported => Err(AllocationError::InvalidLayout),
         }
     }

kernel/src/arch/x86_64/kvm/mod.rs

@@ -1,111 +0,0 @@
-use crate::arch::kvm::vmx::vmcs::VmcsFields;
-use crate::arch::kvm::vmx::vmx_asm_wrapper::{vmx_vmlaunch, vmx_vmread};
-use crate::libs::mutex::Mutex;
-use crate::virt::kvm::vm;
-
-use alloc::sync::Arc;
-use core::arch::asm;
-use log::{debug, error};
-use raw_cpuid::CpuId;
-use system_error::SystemError;
-// use crate::virt::kvm::guest_code;
-use self::vmx::mmu::{kvm_mmu_setup, kvm_vcpu_mtrr_init};
-use self::vmx::vcpu::VmxVcpu;
-pub mod vmx;
-
-#[derive(Default, Debug, Clone)]
-pub struct X86_64KVMArch {
-    // n_used_mmu_pages: u32,
-    // n_requested_mmu_pages: u32,
-    // n_max_mmu_pages: u32,
-    // mmu_valid_gen: u64,
-    // // mmu_page_hash:[],
-    // active_mmu_pages: LinkedList<KvmMmuPage>, // 所有分配的mmu page都挂到active_mmu_pages上
-    // zapped_obsolete_pages: LinkedList<KvmMmuPage>, // 释放的mmu page都挂到zapped_obsolete_pages上,一个全局的invalid_list
-}
-
-impl X86_64KVMArch {
-    /// @brief 查看CPU是否支持虚拟化
-    pub fn kvm_arch_cpu_supports_vm() -> Result<(), SystemError> {
-        let cpuid = CpuId::new();
-        // Check to see if CPU is Intel (“GenuineIntel”).
-        if let Some(vi) = cpuid.get_vendor_info() {
-            if vi.as_str() != "GenuineIntel" {
-                return Err(SystemError::ENOSYS);
-            }
-        }
-        // Check processor supports for Virtual Machine Extension (VMX) technology
-        // CPUID.1:ECX.VMX[bit 5] = 1 (Intel Manual: 24.6 Discovering Support for VMX)
-        if let Some(fi) = cpuid.get_feature_info() {
-            if !fi.has_vmx() {
-                return Err(SystemError::ENOSYS);
-            }
-        }
-        Ok(())
-    }
-
-    /// @brief 初始化KVM
-    pub fn kvm_arch_init() -> Result<(), SystemError> {
-        Ok(())
-    }
-
-    #[deny(clippy::match_single_binding)]
-    pub fn kvm_arch_dev_ioctl(cmd: u32, _arg: usize) -> Result<usize, SystemError> {
-        error!("unknown kvm ioctl cmd: {}", cmd);
-        return Err(SystemError::EINVAL);
-    }
-
-    pub fn kvm_arch_vcpu_create(id: u32) -> Result<Arc<Mutex<VmxVcpu>>, SystemError> {
-        // let guest_rip = current_kvm.lock().memslots[0].memslots[0].userspace_addr;
-        let vcpu = VmxVcpu::new(id, vm(0).unwrap()).unwrap();
-        return Ok(Arc::new(Mutex::new(vcpu)));
-    }
-
-    pub fn kvm_arch_vcpu_setup(vcpu: &Mutex<VmxVcpu>) -> Result<(), SystemError> {
-        kvm_vcpu_mtrr_init(vcpu)?;
-        kvm_mmu_setup(vcpu);
-        Ok(())
-    }
-    pub fn kvm_arch_vcpu_ioctl_run(_vcpu: &Mutex<VmxVcpu>) -> Result<(), SystemError> {
-        match vmx_vmlaunch() {
-            Ok(_) => {}
-            Err(e) => {
-                let vmx_err = vmx_vmread(VmcsFields::VMEXIT_INSTR_ERR as u32).unwrap();
-                debug!("vmlaunch failed: {:?}", vmx_err);
-                return Err(e);
-            }
-        }
-        Ok(())
-    }
-
-    // pub fn kvm_arch_create_memslot(_slot: &mut KvmMemorySlot, _npages: u64) {
-
-    // }
-
-    // pub fn kvm_arch_commit_memory_region(
-    //     _mem: &KvmUserspaceMemoryRegion,
-    //     _new_slot: &KvmMemorySlot,
-    //     _old_slot: &KvmMemorySlot,
-    //     _change: KvmMemoryChange) {
-    //         // let kvm = KVM();
-    //         // let mut num_mmu_pages = 0;
-    //         // if kvm.lock().arch.n_requested_mmu_pages == 0{
-    // 	    //     num_mmu_pages = kvm_mmu_calculate_mmu_pages();
-    //         // }
-    //         // if num_mmu_pages != 0 {
-    //         //     // kvm_mmu_change_mmu_pages(num_mmu_pages);
-    //         // }
-    // }
-}
-
-#[no_mangle]
-pub extern "C" fn guest_code() {
-    debug!("guest_code");
-    loop {
-        unsafe {
-            asm!("mov rax, 0", "mov rcx, 0", "cpuid");
-        }
-        unsafe { asm!("nop") };
-        debug!("guest_code");
-    }
-}

kernel/src/arch/x86_64/kvm/vmx/ept.rs

@@ -1,115 +0,0 @@
-use crate::arch::mm::LockedFrameAllocator;
-use crate::arch::mm::PageMapper;
-use crate::arch::MMArch;
-use crate::mm::page::EntryFlags;
-use crate::mm::{PageTableKind, PhysAddr, VirtAddr};
-use crate::smp::core::smp_get_processor_id;
-use crate::smp::cpu::AtomicProcessorId;
-use crate::smp::cpu::ProcessorId;
-use core::sync::atomic::{compiler_fence, AtomicUsize, Ordering};
-use system_error::SystemError;
-use x86::msr;
-
-/// Check if MTRR is supported
-pub fn check_ept_features() -> Result<(), SystemError> {
-    const MTRR_ENABLE_BIT: u64 = 1 << 11;
-    let ia32_mtrr_def_type = unsafe { msr::rdmsr(msr::IA32_MTRR_DEF_TYPE) };
-    if (ia32_mtrr_def_type & MTRR_ENABLE_BIT) == 0 {
-        return Err(SystemError::ENOSYS);
-    }
-    Ok(())
-}
-
-// pub fn ept_build_mtrr_map() -> Result<(), SystemError> {
-// let ia32_mtrr_cap = unsafe { msr::rdmsr(msr::IA32_MTRRCAP) };
-// Ok(())
-// }
-
-/// 标志当前没有处理器持有内核映射器的锁
-/// 之所以需要这个标志，是因为AtomicUsize::new(0)会把0当作一个处理器的id
-const EPT_MAPPER_NO_PROCESSOR: ProcessorId = ProcessorId::INVALID;
-/// 当前持有内核映射器锁的处理器
-static EPT_MAPPER_LOCK_OWNER: AtomicProcessorId = AtomicProcessorId::new(EPT_MAPPER_NO_PROCESSOR);
-/// 内核映射器的锁计数器
-static EPT_MAPPER_LOCK_COUNT: AtomicUsize = AtomicUsize::new(0);
-
-pub struct EptMapper {
-    /// EPT页表映射器
-    mapper: PageMapper,
-    /// 标记当前映射器是否为只读
-    readonly: bool,
-    // EPT页表根地址
-    // root_hpa: PhysAddr,
-}
-
-impl EptMapper {
-    fn lock_cpu(cpuid: ProcessorId, mapper: PageMapper) -> Self {
-        loop {
-            match EPT_MAPPER_LOCK_OWNER.compare_exchange_weak(
-                EPT_MAPPER_NO_PROCESSOR,
-                cpuid,
-                Ordering::Acquire,
-                Ordering::Relaxed,
-            ) {
-                Ok(_) => break,
-                // 当前处理器已经持有了锁
-                Err(id) if id == cpuid => break,
-                // either CAS failed, or some other hardware thread holds the lock
-                Err(_) => core::hint::spin_loop(),
-            }
-        }
-
-        let prev_count = EPT_MAPPER_LOCK_COUNT.fetch_add(1, Ordering::Relaxed);
-        compiler_fence(Ordering::Acquire);
-
-        // 本地核心已经持有过锁，因此标记当前加锁获得的映射器为只读
-        let readonly = prev_count > 0;
-
-        return Self { mapper, readonly };
-    }
-
-    /// @brief 锁定内核映射器, 并返回一个内核映射器对象
-    #[inline(always)]
-    pub fn lock() -> Self {
-        let cpuid = smp_get_processor_id();
-        let mapper = unsafe { PageMapper::current(PageTableKind::EPT, LockedFrameAllocator) };
-        return Self::lock_cpu(cpuid, mapper);
-    }
-
-    /// 映射guest physical addr(gpa)到指定的host physical addr(hpa)。
-    ///
-    /// ## 参数
-    ///
-    /// - `gpa`: 要映射的guest physical addr
-    /// - `hpa`: 要映射的host physical addr
-    /// - `flags`: 页面标志
-    ///
-    /// ## 返回
-    ///
-    /// - 成功：返回Ok(())
-    /// - 失败： 如果当前映射器为只读，则返回EAGAIN_OR_EWOULDBLOCK
-    pub unsafe fn walk(
-        &mut self,
-        gpa: u64,
-        hpa: u64,
-        flags: EntryFlags<MMArch>,
-    ) -> Result<(), SystemError> {
-        if self.readonly {
-            return Err(SystemError::EAGAIN_OR_EWOULDBLOCK);
-        }
-        self.mapper
-            .map_phys(
-                VirtAddr::new(gpa as usize),
-                PhysAddr::new(hpa as usize),
-                flags,
-            )
-            .unwrap()
-            .flush();
-        return Ok(());
-    }
-
-    // fn get_ept_index(addr: u64, level: usize) -> u64 {
-    //     let pt64_level_shift = PAGE_SHIFT + (level - 1) * PT64_LEVEL_BITS;
-    //     (addr >> pt64_level_shift) & ((1 << PT64_LEVEL_BITS) - 1)
-    // }
-}

kernel/src/arch/x86_64/kvm/vmx/kvm_emulation.rs

@@ -1,7 +0,0 @@
-// pub struct X86Exception {
-// 	vector: u8,
-// 	error_code_valid: bool,
-// 	error_code: u16,
-// 	// bool nested_page_fault;
-// 	address: u64, /* cr2 or nested page fault gpa */
-// }

kernel/src/arch/x86_64/kvm/vmx/mmu.rs

@@ -1,248 +0,0 @@
-use crate::{
-    arch::kvm::vmx::ept::EptMapper,
-    libs::mutex::Mutex,
-    mm::{page::EntryFlags, syscall::ProtFlags},
-    virt::kvm::host_mem::{__gfn_to_pfn, kvm_vcpu_gfn_to_memslot, PAGE_MASK, PAGE_SHIFT},
-};
-use bitfield_struct::bitfield;
-use log::debug;
-use system_error::SystemError;
-
-use super::{
-    ept::check_ept_features,
-    vcpu::VmxVcpu,
-    vmcs::VmcsFields,
-    vmx_asm_wrapper::{vmx_vmread, vmx_vmwrite},
-};
-use crate::arch::kvm::vmx::mmu::VmcsFields::CTRL_EPTP_PTR;
-
-// pub const PT64_ROOT_LEVEL: u32 = 4;
-// pub const PT32_ROOT_LEVEL: u32 = 2;
-// pub const PT32E_ROOT_LEVEL: u32 = 3;
-
-// pub struct KvmMmuPage{
-//     gfn: u64, // 管理地址范围的起始地址对应的 gfn
-//     role: KvmMmuPageRole, // 基本信息，包括硬件特性和所属层级等
-//     // spt: *mut u64, // spt: shadow page table,指向 struct page 的地址，其包含了所有页表项 (pte)。同时 page->private 会指向该 kvm_mmu_page
-// }
-
-#[bitfield(u32)]
-pub struct KvmMmuPageRole {
-    #[bits(4)]
-    level: usize, // 页所处的层级
-    cr4_pae: bool, // cr4.pae，1 表示使用 64bit gpte
-    #[bits(2)]
-    quadrant: usize, // 如果 cr4.pae=0，则 gpte 为 32bit，但 spte 为 64bit，因此需要用多个 spte 来表示一个 gpte，该字段指示是 gpte 的第几块
-    direct: bool,
-    #[bits(3)]
-    access: usize, // 访问权限
-    invalid: bool,        // 失效，一旦 unpin 就会被销毁
-    nxe: bool,            // efer.nxe，不可执行
-    cr0_wp: bool,         // cr0.wp, 写保护
-    smep_andnot_wp: bool, // smep && !cr0.wp，SMEP启用，用户模式代码将无法执行位于内核地址空间中的指令。
-    smap_andnot_wp: bool, // smap && !cr0.wp
-    #[bits(8)]
-    unused: usize,
-    #[bits(8)]
-    smm: usize, // 1 表示处于 system management mode, 0 表示非 SMM
-}
-
-//  We don't want allocation failures within the mmu code, so we preallocate
-// enough memory for a single page fault in a cache.
-// pub struct KvmMmuMemoryCache {
-//     num_objs: u32,
-//     objs: [*mut u8; KVM_NR_MEM_OBJS as usize],
-// }
-pub type KvmMmuPageFaultHandler =
-    fn(vcpu: &mut VmxVcpu, gpa: u64, error_code: u32, prefault: bool) -> Result<(), SystemError>;
-#[derive(Default)]
-pub struct KvmMmu {
-    pub root_hpa: u64,
-    pub root_level: u32,
-    pub base_role: KvmMmuPageRole,
-    // ...还有一些变量不知道用来做什么
-    pub get_cr3: Option<fn(&VmxVcpu) -> u64>,
-    pub set_eptp: Option<fn(u64) -> Result<(), SystemError>>,
-    pub page_fault: Option<KvmMmuPageFaultHandler>,
-    // get_pdptr: Option<fn(& VmxVcpu, index:u32) -> u64>, // Page Directory Pointer Table Register?暂时不知道和CR3的区别是什么
-    // inject_page_fault: Option<fn(&mut VmxVcpu, fault: &X86Exception)>,
-    // gva_to_gpa: Option<fn(&mut VmxVcpu, gva: u64, access: u32, exception: &X86Exception) -> u64>,
-    // translate_gpa: Option<fn(&mut VmxVcpu, gpa: u64, access: u32, exception: &X86Exception) -> u64>,
-    // sync_page: Option<fn(&mut VmxVcpu, &mut KvmMmuPage)>,
-    // invlpg: Option<fn(&mut VmxVcpu, gva: u64)>, // invalid entry
-    // update_pte: Option<fn(&mut VmxVcpu, sp: &KvmMmuPage, spte: u64, pte: u64)>,
-}
-
-impl core::fmt::Debug for KvmMmu {
-    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
-        f.debug_struct("KvmMmu")
-            .field("root_hpa", &self.root_hpa)
-            .field("root_level", &self.root_level)
-            .field("base_role", &self.base_role)
-            .finish()
-    }
-}
-
-fn tdp_get_cr3(_vcpu: &VmxVcpu) -> u64 {
-    let guest_cr3 = vmx_vmread(VmcsFields::GUEST_CR3 as u32).expect("Failed to read eptp");
-    return guest_cr3;
-}
-
-pub fn tdp_set_eptp(root_hpa: u64) -> Result<(), SystemError> {
-    // 设置权限位，目前是写死的，可读可写可执行
-    //  EPT paging-structure memory type: Uncacheable
-    let mut eptp = 0x0_u64;
-    // This value is 1 less than the EPT page-walk length.  3 means 4-level paging.
-    eptp |= 0x3 << 3;
-    eptp |= root_hpa & (PAGE_MASK as u64);
-    vmx_vmwrite(CTRL_EPTP_PTR as u32, eptp)?;
-    Ok(())
-}
-
-fn tdp_page_fault(
-    vcpu: &mut VmxVcpu,
-    gpa: u64,
-    error_code: u32,
-    prefault: bool,
-) -> Result<(), SystemError> {
-    debug!("tdp_page_fault");
-    let gfn = gpa >> PAGE_SHIFT; // 物理地址右移12位得到物理页框号(相对于虚拟机而言)
-                                 // 分配缓存池，为了避免在运行时分配空间失败，这里提前分配/填充足额的空间
-    mmu_topup_memory_caches(vcpu)?;
-    // TODO：获取gfn使用的level，处理hugepage的问题
-    let level = 1; // 4KB page
-                   // TODO: 快速处理由读写操作引起violation，即present同时有写权限的非mmio page fault
-                   // fast_page_fault(vcpu, gpa, level, error_code)
-                   // gfn->pfn
-    let mut map_writable = false;
-    let write = error_code & ((1_u32) << 1);
-    let pfn = mmu_gfn_to_pfn_fast(vcpu, gpa, prefault, gfn, write == 0, &mut map_writable)?;
-    // direct map就是映射ept页表的过程
-    __direct_map(vcpu, gpa, write, map_writable, level, gfn, pfn, prefault)?;
-    Ok(())
-}
-
-/*
- * Caculate mmu pages needed for kvm.
- */
-// pub fn kvm_mmu_calculate_mmu_pages() -> u32 {
-// 	let mut nr_mmu_pages:u32;
-//     let mut nr_pages = 0;
-
-//     let kvm = vm(0).unwrap();
-//     for as_id in 0..KVM_ADDRESS_SPACE_NUM {
-//         let slots = kvm.memslots[as_id];
-//         for i in 0..KVM_MEM_SLOTS_NUM {
-//             let memslot = slots.memslots[i as usize];
-//             nr_pages += memslot.npages;
-//         }
-//     }
-
-// 	nr_mmu_pages = (nr_pages as u32)* KVM_PERMILLE_MMU_PAGES / 1000;
-// 	nr_mmu_pages = nr_mmu_pages.max(KVM_MIN_ALLOC_MMU_PAGES);
-// 	return nr_mmu_pages;
-// }
-
-// pub fn kvm_mmu_change_mmu_pages(mut goal_nr_mmu_pages: u32){
-//     let kvm = KVM();
-//     // 释放多余的mmu page
-//     if kvm.lock().arch.n_used_mmu_pages > goal_nr_mmu_pages {
-//         while kvm.lock().arch.n_used_mmu_pages > goal_nr_mmu_pages {
-//             if !prepare_zap_oldest_mmu_page() {
-//                 break;
-//             }
-//         }
-//         // kvm_mmu_commit_zap_page();
-//         goal_nr_mmu_pages = kvm.lock().arch.n_used_mmu_pages;
-
-//     }
-//     kvm.lock().arch.n_max_mmu_pages = goal_nr_mmu_pages;
-// }
-
-// pub fn prepare_zap_oldest_mmu_page() -> bool {
-//     return false;
-// }
-
-pub fn kvm_mmu_setup(vcpu: &Mutex<VmxVcpu>) {
-    // TODO: init_kvm_softmmu(vcpu), init_kvm_nested_mmu(vcpu)
-    init_kvm_tdp_mmu(vcpu);
-}
-
-pub fn kvm_vcpu_mtrr_init(_vcpu: &Mutex<VmxVcpu>) -> Result<(), SystemError> {
-    check_ept_features()?;
-    Ok(())
-}
-
-pub fn init_kvm_tdp_mmu(vcpu: &Mutex<VmxVcpu>) {
-    let context = &mut vcpu.lock().mmu;
-    context.page_fault = Some(tdp_page_fault);
-    context.get_cr3 = Some(tdp_get_cr3);
-    context.set_eptp = Some(tdp_set_eptp);
-    // context.inject_page_fault = kvm_inject_page_fault; TODO: inject_page_fault
-    // context.invlpg = nonpaging_invlpg;
-    // context.sync_page = nonpaging_sync_page;
-    // context.update_pte = nonpaging_update_pte;
-
-    // TODO: gva to gpa in kvm
-    // if !is_paging(vcpu) { // vcpu不分页
-    //     context.gva_to_gpa = nonpaging_gva_to_gpa;
-    // 	context.root_level = 0;
-    // } else if (is_long_mode(vcpu)) {
-    // 	context.gva_to_gpa = paging64_gva_to_gpa;
-    // 	context.root_level = PT64_ROOT_LEVEL;
-    // TODO:: different paging strategy
-    // } else if (is_pae(vcpu)) {
-    //     context.gva_to_gpa = paging64_gva_to_gpa;
-    //     context.root_level = PT32E_ROOT_LEVEL;
-    // } else {
-    //     context.gva_to_gpa = paging32_gva_to_gpa;
-    //     context.root_level = PT32_ROOT_LEVEL;
-    // }
-}
-
-#[allow(clippy::too_many_arguments)]
-pub fn __direct_map(
-    vcpu: &mut VmxVcpu,
-    gpa: u64,
-    _write: u32,
-    _map_writable: bool,
-    _level: i32,
-    _gfn: u64,
-    pfn: u64,
-    _prefault: bool,
-) -> Result<u32, SystemError> {
-    debug!("gpa={}, pfn={}, root_hpa={:x}", gpa, pfn, vcpu.mmu.root_hpa);
-    // 判断vcpu.mmu.root_hpa是否有效
-    if vcpu.mmu.root_hpa == 0 {
-        return Err(SystemError::KVM_HVA_ERR_BAD);
-    }
-    // 把gpa映射到hpa
-    let mut ept_mapper = EptMapper::lock();
-    let page_flags = EntryFlags::from_prot_flags(ProtFlags::from_bits_truncate(0x7_u64), false);
-    unsafe {
-        assert!(ept_mapper.walk(gpa, pfn << PAGE_SHIFT, page_flags).is_ok());
-    }
-    return Ok(0);
-}
-
-pub fn mmu_gfn_to_pfn_fast(
-    vcpu: &mut VmxVcpu,
-    _gpa: u64,
-    _prefault: bool,
-    gfn: u64,
-    write: bool,
-    writable: &mut bool,
-) -> Result<u64, SystemError> {
-    let slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
-    let pfn = __gfn_to_pfn(slot, gfn, false, write, writable)?;
-    Ok(pfn)
-}
-
-// TODO: 添加cache
-pub fn mmu_topup_memory_caches(_vcpu: &mut VmxVcpu) -> Result<(), SystemError> {
-    // 如果 vcpu->arch.mmu_page_header_cache 不足，从 mmu_page_header_cache 中分配
-    // pte_list_desc_cache 和 mmu_page_header_cache 两块全局 slab cache 在 kvm_mmu_module_init 中被创建
-    // mmu_topup_memory_cache(vcpu.mmu_page_header_cache,
-    //     mmu_page_header_cache, 4);
-    Ok(())
-}

kernel/src/arch/x86_64/kvm/vmx/mod.rs

@@ -1,45 +0,0 @@
-pub mod ept;
-pub mod kvm_emulation;
-pub mod mmu;
-pub mod seg;
-pub mod vcpu;
-pub mod vmcs;
-pub mod vmexit;
-pub mod vmx_asm_wrapper;
-
-#[allow(dead_code)]
-pub enum VcpuRegIndex {
-    Rax = 0,
-    Rbx = 1,
-    Rcx = 2,
-    Rdx = 3,
-    Rsi = 4,
-    Rdi = 5,
-    Rsp = 6,
-    Rbp = 7,
-    R8 = 8,
-    R9 = 9,
-    R10 = 10,
-    R11 = 11,
-    R12 = 12,
-    R13 = 13,
-    R14 = 14,
-    R15 = 15,
-}
-
-bitflags! {
-    #[allow(non_camel_case_types)]
-    pub struct X86_CR0: u32{
-        const CR0_PE = 1 << 0; /* Protection Enable */
-        const CR0_MP = 1 << 1; /* Monitor Coprocessor */
-        const CR0_EM = 1 << 2; /* Emulation */
-        const CR0_TS = 1 << 3; /* Task Switched */
-        const CR0_ET = 1 << 4; /* Extension Type */
-        const CR0_NE = 1 << 5; /* Numeric Error */
-        const CR0_WP = 1 << 16; /* Write Protect */
-        const CR0_AM = 1 << 18; /* Alignment Mask */
-        const CR0_NW = 1 << 29; /* Not Write-through */
-        const CR0_CD = 1 << 30; /* Cache Disable */
-        const CR0_PG = 1 << 31; /* Paging */
-    }
-}

kernel/src/arch/x86_64/kvm/vmx/seg.rs

@@ -1,89 +0,0 @@
-use crate::arch::kvm::VmcsFields::{
-    GUEST_CS_ACCESS_RIGHTS, GUEST_CS_BASE, GUEST_CS_LIMIT, GUEST_CS_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_DS_ACCESS_RIGHTS, GUEST_DS_BASE, GUEST_DS_LIMIT, GUEST_DS_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_ES_ACCESS_RIGHTS, GUEST_ES_BASE, GUEST_ES_LIMIT, GUEST_ES_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_FS_ACCESS_RIGHTS, GUEST_FS_BASE, GUEST_FS_LIMIT, GUEST_FS_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_GS_ACCESS_RIGHTS, GUEST_GS_BASE, GUEST_GS_LIMIT, GUEST_GS_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_LDTR_ACCESS_RIGHTS, GUEST_LDTR_BASE, GUEST_LDTR_LIMIT, GUEST_LDTR_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_SS_ACCESS_RIGHTS, GUEST_SS_BASE, GUEST_SS_LIMIT, GUEST_SS_SELECTOR,
-};
-use crate::arch::kvm::VmcsFields::{
-    GUEST_TR_ACCESS_RIGHTS, GUEST_TR_BASE, GUEST_TR_LIMIT, GUEST_TR_SELECTOR,
-};
-use system_error::SystemError;
-
-use super::vmx_asm_wrapper::vmx_vmwrite;
-
-// pub const TSS_IOPB_BASE_OFFSET: usize = 0x66;
-// pub const TSS_BASE_SIZE: usize = 0x68;
-// pub const TSS_IOPB_SIZE: usize = 65536 / 8;
-// pub const TSS_REDIRECTION_SIZE: usize = 256 / 8;
-// pub const RMODE_TSS_SIZE: usize = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1;
-
-#[derive(Debug)]
-pub struct KvmVmxSegmentField {
-    selector: u32,
-    base: u32,
-    limit: u32,
-    access_rights: u32,
-}
-
-macro_rules! VMX_SEGMENT_FIELD {
-    ($struct_name: ident) => {
-        KvmVmxSegmentField {
-            selector: concat_idents!(GUEST_, $struct_name, _SELECTOR) as u32,
-            base: concat_idents!(GUEST_, $struct_name, _BASE) as u32,
-            limit: concat_idents!(GUEST_, $struct_name, _LIMIT) as u32,
-            access_rights: concat_idents!(GUEST_, $struct_name, _ACCESS_RIGHTS) as u32,
-        }
-    };
-}
-#[derive(FromPrimitive)]
-pub enum Sreg {
-    ES = 0,
-    CS = 1,
-    SS = 2,
-    DS = 3,
-    FS = 4,
-    GS = 5,
-    TR = 6,
-    LDTR = 7,
-}
-
-static KVM_VMX_SEGMENT_FIELDS: [KvmVmxSegmentField; 8] = [
-    VMX_SEGMENT_FIELD!(ES),
-    VMX_SEGMENT_FIELD!(CS),
-    VMX_SEGMENT_FIELD!(SS),
-    VMX_SEGMENT_FIELD!(DS),
-    VMX_SEGMENT_FIELD!(FS),
-    VMX_SEGMENT_FIELD!(GS),
-    VMX_SEGMENT_FIELD!(TR),
-    VMX_SEGMENT_FIELD!(LDTR),
-];
-
-pub fn seg_setup(seg: usize) -> Result<(), SystemError> {
-    let seg_field = &KVM_VMX_SEGMENT_FIELDS[seg];
-    let mut access_rigt = 0x0093;
-    if seg == Sreg::CS as usize {
-        access_rigt |= 0x08;
-    }
-    // setup segment fields
-    vmx_vmwrite(seg_field.selector, 0)?;
-    vmx_vmwrite(seg_field.base, 0)?;
-    vmx_vmwrite(seg_field.limit, 0x0000_FFFF)?;
-    vmx_vmwrite(seg_field.access_rights, access_rigt)?;
-
-    Ok(())
-}

kernel/src/arch/x86_64/kvm/vmx/vcpu.rs

@@ -1,651 +0,0 @@
-use super::vmcs::{
-    VMCSRegion, VmcsFields, VmxEntryCtrl, VmxPrimaryExitCtrl, VmxPrimaryProcessBasedExecuteCtrl,
-    VmxSecondaryProcessBasedExecuteCtrl,
-};
-use super::vmx_asm_wrapper::{vmx_vmclear, vmx_vmptrld, vmx_vmread, vmx_vmwrite, vmxoff, vmxon};
-use crate::arch::kvm::vmx::mmu::KvmMmu;
-use crate::arch::kvm::vmx::seg::{seg_setup, Sreg};
-use crate::arch::kvm::vmx::{VcpuRegIndex, X86_CR0};
-use crate::arch::mm::{LockedFrameAllocator, PageMapper};
-use crate::arch::x86_64::mm::X86_64MMArch;
-use crate::arch::MMArch;
-
-use crate::mm::{MemoryManagementArch, PageTableKind};
-use crate::mm::{PhysAddr, VirtAddr};
-use crate::virt::kvm::vcpu::Vcpu;
-use crate::virt::kvm::vm::Vm;
-use alloc::alloc::Global;
-use alloc::boxed::Box;
-use core::slice;
-use log::debug;
-use raw_cpuid::CpuId;
-use system_error::SystemError;
-use x86;
-use x86::{controlregs, msr, segmentation};
-// use crate::arch::kvm::vmx::seg::RMODE_TSS_SIZE;
-// use crate::virt::kvm::{KVM};
-
-// KERNEL_ALLOCATOR
-pub const PAGE_SIZE: usize = 0x1000;
-pub const NR_VCPU_REGS: usize = 16;
-
-#[repr(C, align(4096))]
-#[derive(Debug)]
-pub struct VmxonRegion {
-    pub revision_id: u32,
-    pub data: [u8; PAGE_SIZE - 4],
-}
-
-#[repr(C, align(4096))]
-#[derive(Debug)]
-pub struct MSRBitmap {
-    pub data: [u8; PAGE_SIZE],
-}
-
-#[allow(dead_code)]
-#[derive(Debug)]
-pub struct VcpuData {
-    /// The virtual and physical address of the Vmxon naturally aligned 4-KByte region of memory
-    pub vmxon_region: Box<VmxonRegion>,
-    pub vmxon_region_physical_address: u64, // vmxon需要该地址
-    /// The virtual and physical address of the Vmcs naturally aligned 4-KByte region of memory
-    /// holds the complete CPU state of both the host and the guest.
-    /// includes the segment registers, GDT, IDT, TR, various MSR’s
-    /// and control field structures for handling exit and entry operations
-    pub vmcs_region: Box<VMCSRegion>,
-    pub vmcs_region_physical_address: u64, // vmptrld, vmclear需要该地址
-    pub msr_bitmap: Box<MSRBitmap>,
-    pub msr_bitmap_physical_address: u64,
-}
-
-#[derive(Default, Debug)]
-#[repr(C)]
-pub struct VcpuContextFrame {
-    pub regs: [usize; NR_VCPU_REGS], // 通用寄存器
-    pub rip: usize,
-    pub rflags: usize,
-}
-
-#[derive(Debug)]
-#[allow(dead_code)]
-pub enum VcpuState {
-    Inv = 0,
-    Pend = 1,
-    Act = 2,
-}
-
-#[allow(dead_code)]
-#[derive(Debug)]
-pub struct VmxVcpu {
-    pub vcpu_id: u32,
-    pub vcpu_ctx: VcpuContextFrame, // 保存vcpu切换时的上下文，如通用寄存器等
-    pub vcpu_state: VcpuState,      // vcpu当前运行状态
-    pub mmu: KvmMmu,                // vcpu的内存管理单元
-    pub data: VcpuData,             // vcpu的数据
-    pub parent_vm: Vm,              // parent KVM
-}
-
-impl VcpuData {
-    pub fn alloc() -> Result<Self, SystemError> {
-        let vmxon_region: Box<VmxonRegion> = unsafe {
-            Box::try_new_zeroed_in(Global)
-                .expect("Try new zeroed fail!")
-                .assume_init()
-        };
-        let vmcs_region: Box<VMCSRegion> = unsafe {
-            Box::try_new_zeroed_in(Global)
-                .expect("Try new zeroed fail!")
-                .assume_init()
-        };
-        let msr_bitmap: Box<MSRBitmap> = unsafe {
-            Box::try_new_zeroed_in(Global)
-                .expect("Try new zeroed fail!")
-                .assume_init()
-        };
-        // FIXME: virt_2_phys的转换正确性存疑
-        let vmxon_region_physical_address = {
-            let vaddr = VirtAddr::new(vmxon_region.as_ref() as *const _ as _);
-            unsafe { MMArch::virt_2_phys(vaddr).unwrap().data() as u64 }
-        };
-        let vmcs_region_physical_address = {
-            let vaddr = VirtAddr::new(vmcs_region.as_ref() as *const _ as _);
-            unsafe { MMArch::virt_2_phys(vaddr).unwrap().data() as u64 }
-        };
-        let msr_bitmap_physical_address = {
-            let vaddr = VirtAddr::new(msr_bitmap.as_ref() as *const _ as _);
-            unsafe { MMArch::virt_2_phys(vaddr).unwrap().data() as u64 }
-        };
-
-        let mut instance = Self {
-            // Allocate a naturally aligned 4-KByte VMXON region of memory to enable VMX operation (Intel Manual: 25.11.5 VMXON Region)
-            vmxon_region,
-            vmxon_region_physical_address,
-            // Allocate a naturally aligned 4-KByte VMCS region of memory
-            vmcs_region,
-            vmcs_region_physical_address,
-            msr_bitmap,
-            msr_bitmap_physical_address,
-        };
-        // printk_color!(GREEN, BLACK, "[+] init_region\n");
-        instance.init_region()?;
-        Ok(instance)
-    }
-
-    pub fn init_region(&mut self) -> Result<(), SystemError> {
-        // Get the Virtual Machine Control Structure revision identifier (VMCS revision ID)
-        // (Intel Manual: 25.11.5 VMXON Region)
-        let revision_id = unsafe { (msr::rdmsr(msr::IA32_VMX_BASIC) as u32) & 0x7FFF_FFFF };
-        debug!("[+] VMXON Region Virtual Address: {:p}", self.vmxon_region);
-        debug!(
-            "[+] VMXON Region Physical Addresss: 0x{:x}",
-            self.vmxon_region_physical_address
-        );
-        debug!("[+] VMCS Region Virtual Address: {:p}", self.vmcs_region);
-        debug!(
-            "[+] VMCS Region Physical Address1: 0x{:x}",
-            self.vmcs_region_physical_address
-        );
-        self.vmxon_region.revision_id = revision_id;
-        self.vmcs_region.revision_id = revision_id;
-        return Ok(());
-    }
-}
-
-impl VmxVcpu {
-    pub fn new(vcpu_id: u32, parent_vm: Vm) -> Result<Self, SystemError> {
-        debug!("Creating processor {}", vcpu_id);
-        let instance = Self {
-            vcpu_id,
-            vcpu_ctx: VcpuContextFrame {
-                regs: [0; NR_VCPU_REGS],
-                rip: 0,
-                rflags: 0,
-            },
-            vcpu_state: VcpuState::Inv,
-            mmu: KvmMmu::default(),
-            data: VcpuData::alloc()?,
-            parent_vm,
-        };
-        Ok(instance)
-    }
-
-    pub fn vmx_set_cr0(cr0: X86_CR0) -> Result<(), SystemError> {
-        let mut hw_cr0 = cr0 & !(X86_CR0::CR0_NW | X86_CR0::CR0_CD);
-        hw_cr0 |= X86_CR0::CR0_WP | X86_CR0::CR0_NE;
-
-        vmx_vmwrite(VmcsFields::GUEST_CR0 as u32, cr0.bits() as u64)?;
-        Ok(())
-    }
-
-    pub fn vmcs_init_guest(&self) -> Result<(), SystemError> {
-        // https://www.sandpile.org/x86/initial.htm
-        // segment field initialization
-        seg_setup(Sreg::CS as usize)?;
-        vmx_vmwrite(VmcsFields::GUEST_CS_SELECTOR as u32, 0xf000)?;
-        vmx_vmwrite(VmcsFields::GUEST_CS_BASE as u32, 0xffff0000)?;
-
-        seg_setup(Sreg::DS as usize)?;
-        seg_setup(Sreg::ES as usize)?;
-        seg_setup(Sreg::FS as usize)?;
-        seg_setup(Sreg::GS as usize)?;
-        seg_setup(Sreg::SS as usize)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_TR_SELECTOR as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_TR_BASE as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_TR_LIMIT as u32, 0xffff)?;
-        vmx_vmwrite(VmcsFields::GUEST_TR_ACCESS_RIGHTS as u32, 0x008b)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_LDTR_SELECTOR as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_LDTR_BASE as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_LDTR_LIMIT as u32, 0xffff)?;
-        vmx_vmwrite(VmcsFields::GUEST_LDTR_ACCESS_RIGHTS as u32, 0x00082)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_RFLAGS as u32, 2)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_GDTR_BASE as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_GDTR_LIMIT as u32, 0x0000_FFFF_u64)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_IDTR_BASE as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_IDTR_LIMIT as u32, 0x0000_FFFF_u64)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_ACTIVITY_STATE as u32, 0)?; // State = Active
-        vmx_vmwrite(VmcsFields::GUEST_INTERRUPTIBILITY_STATE as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_PENDING_DBG_EXCEPTIONS as u32, 0)?;
-
-        vmx_vmwrite(VmcsFields::CTRL_VM_ENTRY_INTR_INFO_FIELD as u32, 0)?;
-
-        let cr0 = X86_CR0::CR0_NW | X86_CR0::CR0_CD | X86_CR0::CR0_ET;
-        Self::vmx_set_cr0(cr0)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_CR0 as u32, cr0.bits() as u64)?;
-
-        vmx_vmwrite(
-            VmcsFields::GUEST_SYSENTER_CS as u32,
-            vmx_vmread(VmcsFields::HOST_SYSENTER_CS as u32).unwrap(),
-        )?;
-        vmx_vmwrite(VmcsFields::GUEST_VMX_PREEMPT_TIMER_VALUE as u32, 0)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_INTR_STATUS as u32, 0)?;
-        vmx_vmwrite(VmcsFields::GUEST_PML_INDEX as u32, 0)?;
-
-        vmx_vmwrite(VmcsFields::GUEST_VMCS_LINK_PTR as u32, u64::MAX)?;
-        vmx_vmwrite(VmcsFields::GUEST_DEBUGCTL as u32, unsafe {
-            msr::rdmsr(msr::IA32_DEBUGCTL)
-        })?;
-
-        vmx_vmwrite(
-            VmcsFields::GUEST_SYSENTER_ESP as u32,
-            vmx_vmread(VmcsFields::HOST_SYSENTER_ESP as u32).unwrap(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::GUEST_SYSENTER_EIP as u32,
-            vmx_vmread(VmcsFields::HOST_SYSENTER_EIP as u32).unwrap(),
-        )?;
-
-        // Self::vmx_set_cr0();
-        vmx_vmwrite(VmcsFields::GUEST_CR3 as u32, 0)?;
-        vmx_vmwrite(
-            VmcsFields::GUEST_CR4 as u32,
-            1, // enable vme
-        )?;
-        vmx_vmwrite(VmcsFields::GUEST_DR7 as u32, 0x0000_0000_0000_0400)?;
-        vmx_vmwrite(
-            VmcsFields::GUEST_RSP as u32,
-            self.vcpu_ctx.regs[VcpuRegIndex::Rsp as usize] as u64,
-        )?;
-        vmx_vmwrite(VmcsFields::GUEST_RIP as u32, self.vcpu_ctx.rip as u64)?;
-        debug!("vmcs init guest rip: {:#x}", self.vcpu_ctx.rip as u64);
-        debug!(
-            "vmcs init guest rsp: {:#x}",
-            self.vcpu_ctx.regs[VcpuRegIndex::Rsp as usize] as u64
-        );
-
-        // vmx_vmwrite(VmcsFields::GUEST_RFLAGS as u32, x86::bits64::rflags::read().bits())?;
-        Ok(())
-    }
-
-    #[allow(deprecated)]
-    pub fn vmcs_init_host(&self) -> Result<(), SystemError> {
-        vmx_vmwrite(VmcsFields::HOST_CR0 as u32, unsafe {
-            controlregs::cr0().bits().try_into().unwrap()
-        })?;
-        vmx_vmwrite(VmcsFields::HOST_CR3 as u32, unsafe { controlregs::cr3() })?;
-        vmx_vmwrite(VmcsFields::HOST_CR4 as u32, unsafe {
-            controlregs::cr4().bits().try_into().unwrap()
-        })?;
-        vmx_vmwrite(
-            VmcsFields::HOST_ES_SELECTOR as u32,
-            (segmentation::es().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_CS_SELECTOR as u32,
-            (segmentation::cs().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_SS_SELECTOR as u32,
-            (segmentation::ss().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_DS_SELECTOR as u32,
-            (segmentation::ds().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_FS_SELECTOR as u32,
-            (segmentation::fs().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_GS_SELECTOR as u32,
-            (segmentation::gs().bits() & (!0x07)).into(),
-        )?;
-        vmx_vmwrite(VmcsFields::HOST_TR_SELECTOR as u32, unsafe {
-            (x86::task::tr().bits() & (!0x07)).into()
-        })?;
-        vmx_vmwrite(VmcsFields::HOST_FS_BASE as u32, unsafe {
-            msr::rdmsr(msr::IA32_FS_BASE)
-        })?;
-        vmx_vmwrite(VmcsFields::HOST_GS_BASE as u32, unsafe {
-            msr::rdmsr(msr::IA32_GS_BASE)
-        })?;
-
-        let mut pseudo_descriptpr: x86::dtables::DescriptorTablePointer<u64> = Default::default();
-        unsafe {
-            x86::dtables::sgdt(&mut pseudo_descriptpr);
-        };
-
-        vmx_vmwrite(
-            VmcsFields::HOST_TR_BASE as u32,
-            get_segment_base(pseudo_descriptpr.base, pseudo_descriptpr.limit, unsafe {
-                x86::task::tr().bits()
-            }),
-        )?;
-        vmx_vmwrite(
-            VmcsFields::HOST_GDTR_BASE as u32,
-            pseudo_descriptpr.base as usize as u64,
-        )?;
-        vmx_vmwrite(VmcsFields::HOST_IDTR_BASE as u32, unsafe {
-            let mut pseudo_descriptpr: x86::dtables::DescriptorTablePointer<u64> =
-                Default::default();
-            x86::dtables::sidt(&mut pseudo_descriptpr);
-            pseudo_descriptpr.base as usize as u64
-        })?;
-
-        // fast entry into the kernel
-        vmx_vmwrite(VmcsFields::HOST_SYSENTER_ESP as u32, unsafe {
-            msr::rdmsr(msr::IA32_SYSENTER_ESP)
-        })?;
-        vmx_vmwrite(VmcsFields::HOST_SYSENTER_EIP as u32, unsafe {
-            msr::rdmsr(msr::IA32_SYSENTER_EIP)
-        })?;
-        vmx_vmwrite(VmcsFields::HOST_SYSENTER_CS as u32, unsafe {
-            msr::rdmsr(msr::IA32_SYSENTER_CS)
-        })?;
-
-        // vmx_vmwrite(VmcsFields::HOST_RIP as u32, vmx_return as *const () as u64)?;
-        // debug!("vmcs init host rip: {:#x}", vmx_return as *const () as u64);
-
-        Ok(())
-    }
-
-    // Intel SDM Volume 3C Chapter 25.3 “Organization of VMCS Data”
-    pub fn vmcs_init(&self) -> Result<(), SystemError> {
-        vmx_vmwrite(VmcsFields::CTRL_PAGE_FAULT_ERR_CODE_MASK as u32, 0)?;
-        vmx_vmwrite(VmcsFields::CTRL_PAGE_FAULT_ERR_CODE_MATCH as u32, 0)?;
-        vmx_vmwrite(VmcsFields::CTRL_CR3_TARGET_COUNT as u32, 0)?;
-
-        vmx_vmwrite(
-            VmcsFields::CTRL_PIN_BASED_VM_EXEC_CTRLS as u32,
-            adjust_vmx_pinbased_controls() as u64,
-        )?;
-
-        vmx_vmwrite(
-            VmcsFields::CTRL_MSR_BITMAP_ADDR as u32,
-            self.data.msr_bitmap_physical_address,
-        )?;
-
-        vmx_vmwrite(VmcsFields::CTRL_CR0_READ_SHADOW as u32, unsafe {
-            controlregs::cr0().bits().try_into().unwrap()
-        })?;
-        vmx_vmwrite(VmcsFields::CTRL_CR4_READ_SHADOW as u32, unsafe {
-            controlregs::cr4().bits().try_into().unwrap()
-        })?;
-        vmx_vmwrite(
-            VmcsFields::CTRL_VM_ENTRY_CTRLS as u32,
-            adjust_vmx_entry_controls() as u64,
-        )?;
-        vmx_vmwrite(
-            VmcsFields::CTRL_PRIMARY_VM_EXIT_CTRLS as u32,
-            adjust_vmx_exit_controls() as u64,
-        )?;
-        vmx_vmwrite(
-            VmcsFields::CTRL_PRIMARY_PROCESSOR_VM_EXEC_CTRLS as u32,
-            adjust_vmx_primary_process_exec_controls() as u64,
-        )?;
-        vmx_vmwrite(
-            VmcsFields::CTRL_SECONDARY_PROCESSOR_VM_EXEC_CTRLS as u32,
-            adjust_vmx_secondary_process_exec_controls() as u64,
-        )?;
-
-        self.vmcs_init_host()?;
-        self.vmcs_init_guest()?;
-        Ok(())
-    }
-
-    fn kvm_mmu_load(&mut self) -> Result<(), SystemError> {
-        debug!("kvm_mmu_load!");
-        // 申请并创建新的页表
-        let mapper: crate::mm::page::PageMapper<X86_64MMArch, LockedFrameAllocator> = unsafe {
-            PageMapper::create(PageTableKind::EPT, LockedFrameAllocator)
-                .ok_or(SystemError::ENOMEM)?
-        };
-
-        let ept_root_hpa = mapper.table().phys();
-        let set_eptp_fn = self.mmu.set_eptp.unwrap();
-        set_eptp_fn(ept_root_hpa.data() as u64)?;
-        self.mmu.root_hpa = ept_root_hpa.data() as u64;
-        debug!("ept_root_hpa:{:x}!", ept_root_hpa.data() as u64);
-
-        return Ok(());
-    }
-
-    pub fn set_regs(&mut self, regs: VcpuContextFrame) -> Result<(), SystemError> {
-        self.vcpu_ctx = regs;
-        Ok(())
-    }
-}
-
-impl Vcpu for VmxVcpu {
-    /// Virtualize the CPU
-    fn virtualize_cpu(&mut self) -> Result<(), SystemError> {
-        match has_intel_vmx_support() {
-            Ok(_) => {
-                debug!("[+] CPU supports Intel VMX");
-            }
-            Err(e) => {
-                debug!("[-] CPU does not support Intel VMX: {:?}", e);
-                return Err(SystemError::ENOSYS);
-            }
-        };
-
-        match enable_vmx_operation() {
-            Ok(_) => {
-                debug!("[+] Enabling Virtual Machine Extensions (VMX)");
-            }
-            Err(_) => {
-                debug!("[-] VMX operation is not supported on this processor.");
-                return Err(SystemError::ENOSYS);
-            }
-        }
-
-        vmxon(self.data.vmxon_region_physical_address)?;
-        debug!("[+] VMXON successful!");
-        vmx_vmclear(self.data.vmcs_region_physical_address)?;
-        vmx_vmptrld(self.data.vmcs_region_physical_address)?;
-        debug!("[+] VMPTRLD successful!");
-        self.vmcs_init().expect("vncs_init fail");
-        debug!("[+] VMCS init!");
-        // debug!("vmcs init host rip: {:#x}", vmx_return as *const () as u64);
-        // debug!("vmcs init host rsp: {:#x}", x86::bits64::registers::rsp());
-        // vmx_vmwrite(VmcsFields::HOST_RSP as u32, x86::bits64::registers::rsp())?;
-        // vmx_vmwrite(VmcsFields::HOST_RIP as u32, vmx_return as *const () as u64)?;
-        // vmx_vmwrite(VmcsFields::HOST_RSP as u32,  x86::bits64::registers::rsp())?;
-        self.kvm_mmu_load()?;
-        Ok(())
-    }
-
-    fn devirtualize_cpu(&self) -> Result<(), SystemError> {
-        vmxoff()?;
-        Ok(())
-    }
-
-    /// Gets the index of the current logical/virtual processor
-    fn id(&self) -> u32 {
-        self.vcpu_id
-    }
-}
-
-pub fn get_segment_base(gdt_base: *const u64, gdt_size: u16, segment_selector: u16) -> u64 {
-    let table = segment_selector & 0x0004; // get table indicator in selector
-    let index = (segment_selector >> 3) as usize; // get index in selector
-    if table == 0 && index == 0 {
-        return 0;
-    }
-    let descriptor_table = unsafe { slice::from_raw_parts(gdt_base, gdt_size.into()) };
-    let descriptor = descriptor_table[index];
-
-    let base_high = (descriptor & 0xFF00_0000_0000_0000) >> 32;
-    let base_mid = (descriptor & 0x0000_00FF_0000_0000) >> 16;
-    let base_low = (descriptor & 0x0000_0000_FFFF_0000) >> 16;
-    let segment_base = (base_high | base_mid | base_low) & 0xFFFFFFFF;
-    let virtaddr = unsafe { MMArch::phys_2_virt(PhysAddr::new(segment_base as usize)).unwrap() };
-
-    return virtaddr.data() as u64;
-}
-
-// FIXME: may have bug
-// pub fn read_segment_access_rights(segement_selector: u16) -> u32{
-//     let table = segement_selector & 0x0004; // get table indicator in selector
-//     let index = segement_selector & 0xFFF8; // get index in selector
-//     let mut flag: u16;
-//     if table==0 && index==0 {
-//         return 0;
-//     }
-//     unsafe{
-//         asm!(
-//             "lar {0:r}, rcx",
-//             "mov {1:r}, {0:r}",
-//             in(reg) segement_selector,
-//             out(reg) flag,
-//         );
-//     }
-//     return (flag >> 8) as u32;
-// }
-pub fn adjust_vmx_controls(ctl_min: u32, ctl_opt: u32, msr: u32, result: &mut u32) {
-    let vmx_msr_low: u32 = unsafe { (msr::rdmsr(msr) & 0x0000_0000_FFFF_FFFF) as u32 };
-    let vmx_msr_high: u32 = unsafe { (msr::rdmsr(msr) >> 32) as u32 };
-    let mut ctl: u32 = ctl_min | ctl_opt;
-    ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */
-    ctl |= vmx_msr_low; /* bit == 1 in low word  ==> must be one  */
-    *result = ctl;
-}
-
-pub fn adjust_vmx_entry_controls() -> u32 {
-    let mut entry_controls: u32 = 0;
-    adjust_vmx_controls(
-        VmxEntryCtrl::LOAD_DBG_CTRLS.bits(),
-        VmxEntryCtrl::IA32E_MODE_GUEST.bits(),
-        msr::IA32_VMX_ENTRY_CTLS, //Capability Reporting Register of VM-entry Controls (R/O)
-        &mut entry_controls,
-    );
-    return entry_controls;
-    // msr::IA32_VMX_TRUE_ENTRY_CTLS//Capability Reporting Register of VM-entry Flex Controls (R/O) See Table 35-2
-}
-
-pub fn adjust_vmx_exit_controls() -> u32 {
-    let mut exit_controls: u32 = 0;
-    adjust_vmx_controls(
-        VmxPrimaryExitCtrl::SAVE_DBG_CTRLS.bits(),
-        VmxPrimaryExitCtrl::HOST_ADDR_SPACE_SIZE.bits(),
-        msr::IA32_VMX_EXIT_CTLS,
-        &mut exit_controls,
-    );
-    return exit_controls;
-}
-
-pub fn adjust_vmx_pinbased_controls() -> u32 {
-    let mut controls: u32 = 16;
-    adjust_vmx_controls(0, 0, msr::IA32_VMX_TRUE_PINBASED_CTLS, &mut controls);
-    // debug!("adjust_vmx_pinbased_controls: {:x}", controls);
-    return controls;
-}
-
-pub fn adjust_vmx_primary_process_exec_controls() -> u32 {
-    let mut controls: u32 = 0;
-    adjust_vmx_controls(
-        0,
-        VmxPrimaryProcessBasedExecuteCtrl::USE_MSR_BITMAPS.bits()
-            | VmxPrimaryProcessBasedExecuteCtrl::ACTIVATE_SECONDARY_CONTROLS.bits(),
-        msr::IA32_VMX_PROCBASED_CTLS,
-        &mut controls,
-    );
-    return controls;
-}
-
-pub fn adjust_vmx_secondary_process_exec_controls() -> u32 {
-    let mut controls: u32 = 0;
-    adjust_vmx_controls(
-        0,
-        VmxSecondaryProcessBasedExecuteCtrl::ENABLE_RDTSCP.bits()
-            | VmxSecondaryProcessBasedExecuteCtrl::ENABLE_XSAVES_XRSTORS.bits()
-            | VmxSecondaryProcessBasedExecuteCtrl::ENABLE_INVPCID.bits()
-            | VmxSecondaryProcessBasedExecuteCtrl::ENABLE_EPT.bits()
-            | VmxSecondaryProcessBasedExecuteCtrl::UNRESTRICTED_GUEST.bits(),
-        msr::IA32_VMX_PROCBASED_CTLS2,
-        &mut controls,
-    );
-    return controls;
-}
-
-/// Check to see if CPU is Intel (“GenuineIntel”).
-/// Check processor supports for Virtual Machine Extension (VMX) technology
-//  CPUID.1:ECX.VMX[bit 5] = 1 (Intel Manual: 24.6 Discovering Support for VMX)
-pub fn has_intel_vmx_support() -> Result<(), SystemError> {
-    let cpuid = CpuId::new();
-    if let Some(vi) = cpuid.get_vendor_info() {
-        if vi.as_str() != "GenuineIntel" {
-            return Err(SystemError::ENOSYS);
-        }
-    }
-    if let Some(fi) = cpuid.get_feature_info() {
-        if !fi.has_vmx() {
-            return Err(SystemError::ENOSYS);
-        }
-    }
-    Ok(())
-}
-
-/// Enables Virtual Machine Extensions
-// - CR4.VMXE[bit 13] = 1 (Intel Manual: 24.7 Enabling and Entering VMX Operation)
-pub fn enable_vmx_operation() -> Result<(), SystemError> {
-    let mut cr4 = unsafe { controlregs::cr4() };
-    cr4.set(controlregs::Cr4::CR4_ENABLE_VMX, true);
-    unsafe { controlregs::cr4_write(cr4) };
-
-    set_lock_bit()?;
-    debug!("[+] Lock bit set via IA32_FEATURE_CONTROL");
-    set_cr0_bits();
-    debug!("[+] Mandatory bits in CR0 set/cleared");
-    set_cr4_bits();
-    debug!("[+] Mandatory bits in CR4 set/cleared");
-
-    Ok(())
-}
-
-/// Check if we need to set bits in IA32_FEATURE_CONTROL
-// (Intel Manual: 24.7 Enabling and Entering VMX Operation)
-fn set_lock_bit() -> Result<(), SystemError> {
-    const VMX_LOCK_BIT: u64 = 1 << 0;
-    const VMXON_OUTSIDE_SMX: u64 = 1 << 2;
-
-    let ia32_feature_control = unsafe { msr::rdmsr(msr::IA32_FEATURE_CONTROL) };
-
-    if (ia32_feature_control & VMX_LOCK_BIT) == 0 {
-        unsafe {
-            msr::wrmsr(
-                msr::IA32_FEATURE_CONTROL,
-                VMXON_OUTSIDE_SMX | VMX_LOCK_BIT | ia32_feature_control,
-            )
-        };
-    } else if (ia32_feature_control & VMXON_OUTSIDE_SMX) == 0 {
-        return Err(SystemError::EPERM);
-    }
-
-    Ok(())
-}
-
-/// Set the mandatory bits in CR0 and clear bits that are mandatory zero
-/// (Intel Manual: 24.8 Restrictions on VMX Operation)
-fn set_cr0_bits() {
-    let ia32_vmx_cr0_fixed0 = unsafe { msr::rdmsr(msr::IA32_VMX_CR0_FIXED0) };
-    let ia32_vmx_cr0_fixed1 = unsafe { msr::rdmsr(msr::IA32_VMX_CR0_FIXED1) };
-
-    let mut cr0 = unsafe { controlregs::cr0() };
-
-    cr0 |= controlregs::Cr0::from_bits_truncate(ia32_vmx_cr0_fixed0 as usize);
-    cr0 &= controlregs::Cr0::from_bits_truncate(ia32_vmx_cr0_fixed1 as usize);
-
-    unsafe { controlregs::cr0_write(cr0) };
-}
-
-/// Set the mandatory bits in CR4 and clear bits that are mandatory zero
-/// (Intel Manual: 24.8 Restrictions on VMX Operation)
-fn set_cr4_bits() {
-    let ia32_vmx_cr4_fixed0 = unsafe { msr::rdmsr(msr::IA32_VMX_CR4_FIXED0) };
-    let ia32_vmx_cr4_fixed1 = unsafe { msr::rdmsr(msr::IA32_VMX_CR4_FIXED1) };
-
-    let mut cr4 = unsafe { controlregs::cr4() };
-
-    cr4 |= controlregs::Cr4::from_bits_truncate(ia32_vmx_cr4_fixed0 as usize);
-    cr4 &= controlregs::Cr4::from_bits_truncate(ia32_vmx_cr4_fixed1 as usize);
-
-    unsafe { controlregs::cr4_write(cr4) };
-}

kernel/src/arch/x86_64/kvm/vmx/vmcs.rs

@@ -1,537 +0,0 @@
-use bitflags::bitflags;
-use num_derive::FromPrimitive;
-
-pub const PAGE_SIZE: usize = 0x1000;
-
-#[repr(C, align(4096))]
-#[derive(Clone, Debug)]
-pub struct VMCSRegion {
-    pub revision_id: u32,
-    pub abort_indicator: u32,
-    data: [u8; PAGE_SIZE - 8],
-}
-
-// (Intel Manual: 25.11.2 VMREAD, VMWRITE, and Encodings of VMCS Fields)
-#[derive(FromPrimitive)]
-enum VmcsAccessType {
-    FULL = 0,
-    HIGH = 1,
-}
-
-#[derive(FromPrimitive)]
-enum VmcsType {
-    CONTROL = 0,
-    VMEXIT = 1,
-    GUEST = 2,
-    HOST = 3,
-}
-
-#[derive(FromPrimitive)]
-enum VmcsWidth {
-    BIT16 = 0,
-    BIT64 = 1,
-    BIT32 = 2,
-    NATURAL = 3,
-}
-
-#[derive(FromPrimitive)]
-#[allow(non_camel_case_types)]
-// (Intel Manual: APPENDIX B FIELD ENCODING IN VMCS)
-pub enum VmcsFields {
-    // [CONTROL] fields
-    // 16-bit control fields
-    CTRL_VIRT_PROC_ID = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT16, 0) as isize,
-    CTRL_POSTED_INTR_N_VECTOR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT16, 1) as isize,
-    CTRL_EPTP_INDEX = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT16, 2) as isize,
-    // 64-bit control fields
-    CTRL_IO_BITMAP_A_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 0) as isize,
-    CTRL_IO_BITMAP_B_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 1) as isize,
-    CTRL_MSR_BITMAP_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 2) as isize, // control whether RDMSR or WRMSR cause VM exit
-    CTRL_VMEXIT_MSR_STORE_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 3) as isize,
-    CTRL_VMEXIT_MSR_LOAD_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 4) as isize,
-    CTRL_VMENTRY_MSR_LOAD_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 5) as isize,
-    CTRL_EXECUTIVE_VMCS_PTR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 6) as isize,
-    CTRL_PML_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 7) as isize,
-    CTRL_TSC_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 8) as isize,
-    CTRL_VIRT_APIC_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 9) as isize,
-    CTRL_APIC_ACCESS_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 10) as isize,
-    CTRL_POSTED_INTR_DESC_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 11) as isize,
-    CTRL_VMFUNC_CTRL = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 12) as isize,
-    CTRL_EPTP_PTR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 13) as isize,
-    CTRL_EOI_EXIT_BITMAP_0 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 14) as isize,
-    CTRL_EOI_EXIT_BITMAP_1 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 15) as isize,
-    CTRL_EOI_EXIT_BITMAP_2 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 16) as isize,
-    CTRL_EOI_EXIT_BITMAP_3 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 17) as isize,
-    CTRL_EPT_LIST_ADDR = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 18) as isize,
-    CTRL_VMREAD_BITMAP_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 19) as isize,
-    CTRL_VMWRITE_BITMAP_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 20) as isize,
-    CTRL_VIRT_EXECPT_INFO_ADDR =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 21) as isize,
-    CTRL_XSS_EXITING_BITMAP =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 22) as isize,
-    CTRL_ENCLS_EXITING_BITMAP =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 23) as isize,
-    CTRL_TSC_MULTIPLIER = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT64, 25) as isize,
-    // 32-bit control fields
-    CTRL_PIN_BASED_VM_EXEC_CTRLS =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 0) as isize, // control async event handling (i.e. interrupts)
-    CTRL_PRIMARY_PROCESSOR_VM_EXEC_CTRLS =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 1) as isize, // control sync event handling (i.e. instruction exits)
-    CTRL_EXPECTION_BITMAP = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 2) as isize, // bitmap to control exceptions that cause a VM exit
-    CTRL_PAGE_FAULT_ERR_CODE_MASK =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 3) as isize,
-    CTRL_PAGE_FAULT_ERR_CODE_MATCH =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 4) as isize,
-    CTRL_CR3_TARGET_COUNT = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 5) as isize,
-    CTRL_PRIMARY_VM_EXIT_CTRLS =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 6) as isize,
-    CTRL_VM_EXIT_MSR_STORE_COUNT =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 7) as isize,
-    CTRL_VM_EXIT_MSR_LOAD_COUNT =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 8) as isize,
-    CTRL_VM_ENTRY_CTRLS = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 9) as isize,
-    CTRL_VM_ENTRY_MSR_LOAD_COUNT =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 10) as isize,
-    CTRL_VM_ENTRY_INTR_INFO_FIELD =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 11) as isize,
-    CTRL_VM_ENTRY_EXCEPTION_ERR_CODE =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 12) as isize,
-    CTRL_VM_ENTRY_INSTR_LEN =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 13) as isize,
-    CTRL_TPR_THRESHOLD = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 14) as isize,
-    CTRL_SECONDARY_PROCESSOR_VM_EXEC_CTRLS =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 15) as isize,
-    CTRL_PLE_GAP = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 16) as isize,
-    CTRL_PLE_WINDOW = encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::BIT32, 17) as isize,
-    // natural control fields
-    CTRL_CR0_GUEST_HOST_MASK =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 0) as isize, // control executions of insts that access cr0
-    CTRL_CR4_GUEST_HOST_MASK =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 1) as isize,
-    CTRL_CR0_READ_SHADOW =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 2) as isize, // control executions of insts that access cr0
-    CTRL_CR4_READ_SHADOW =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 3) as isize,
-    CTRL_CR3_TARGET_VALUE_0 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 4) as isize,
-    CTRL_CR3_TARGET_VALUE_1 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 5) as isize,
-    CTRL_CR3_TARGET_VALUE_2 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 6) as isize,
-    CTRL_CR3_TARGET_VALUE_3 =
-        encode_vmcs_field_full(VmcsType::CONTROL, VmcsWidth::NATURAL, 7) as isize,
-
-    // [VMEXIT] fields read-only
-    // No 16-bit vmexit fields
-    // 64-bit vmexit fields
-    VMEXIT_GUEST_PHY_ADDR = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT64, 0) as isize,
-    // 32-bit vmexit fields
-    VMEXIT_INSTR_ERR = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 0) as isize,
-    VMEXIT_EXIT_REASON = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 1) as isize,
-    VMEXIT_INT_INFO = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 2) as isize,
-    VMEXIT_INT_ERR_CODE = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 3) as isize,
-    VMEXIT_IDT_VECTOR_INFO = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 4) as isize,
-    VMEXIT_IDT_VECTOR_ERR_CODE =
-        encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 5) as isize,
-    VMEXIT_INSTR_LEN = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 6) as isize,
-    VMEXIT_INSTR_INFO = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::BIT32, 7) as isize,
-    // natural vmexit fields
-    VMEXIT_QUALIFICATION = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 0) as isize,
-    VMEXIT_IO_RCX = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 1) as isize,
-    VMEXIT_IO_RSX = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 2) as isize,
-    VMEXIT_IO_RDI = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 3) as isize,
-    VMEXIT_IO_RIP = encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 4) as isize,
-    VMEXIT_GUEST_LINEAR_ADDR =
-        encode_vmcs_field_full(VmcsType::VMEXIT, VmcsWidth::NATURAL, 5) as isize,
-
-    // [GUEST] fields
-    // 16-bit guest fields
-    GUEST_ES_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 0) as isize,
-    GUEST_CS_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 1) as isize,
-    GUEST_SS_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 2) as isize,
-    GUEST_DS_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 3) as isize,
-    GUEST_FS_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 4) as isize,
-    GUEST_GS_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 5) as isize,
-    GUEST_LDTR_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 6) as isize,
-    GUEST_TR_SELECTOR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 7) as isize,
-    GUEST_INTR_STATUS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 8) as isize,
-    GUEST_PML_INDEX = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT16, 9) as isize,
-    // 64-bit guest fields
-    GUEST_VMCS_LINK_PTR = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 0) as isize,
-    GUEST_DEBUGCTL = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 1) as isize,
-    GUEST_PAT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 2) as isize,
-    GUEST_EFER = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 3) as isize,
-    GUEST_PERF_GLOBAL_CTRL = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 4) as isize,
-    GUEST_PDPTE0 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 5) as isize,
-    GUEST_PDPTE1 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 6) as isize,
-    GUEST_PDPTE2 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 7) as isize,
-    GUEST_PDPTE3 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT64, 8) as isize,
-    // 32-bit guest fields
-    GUEST_ES_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 0) as isize,
-    GUEST_CS_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 1) as isize,
-    GUEST_SS_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 2) as isize,
-    GUEST_DS_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 3) as isize,
-    GUEST_FS_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 4) as isize,
-    GUEST_GS_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 5) as isize,
-    GUEST_LDTR_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 6) as isize,
-    GUEST_TR_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 7) as isize,
-    GUEST_GDTR_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 8) as isize,
-    GUEST_IDTR_LIMIT = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 9) as isize,
-    GUEST_ES_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 10) as isize,
-    GUEST_CS_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 11) as isize,
-    GUEST_SS_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 12) as isize,
-    GUEST_DS_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 13) as isize,
-    GUEST_FS_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 14) as isize,
-    GUEST_GS_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 15) as isize,
-    GUEST_LDTR_ACCESS_RIGHTS =
-        encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 16) as isize,
-    GUEST_TR_ACCESS_RIGHTS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 17) as isize,
-    GUEST_INTERRUPTIBILITY_STATE =
-        encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 18) as isize,
-    GUEST_ACTIVITY_STATE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 19) as isize,
-    GUEST_SMBASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 20) as isize,
-    GUEST_SYSENTER_CS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::BIT32, 21) as isize,
-    GUEST_VMX_PREEMPT_TIMER_VALUE = 0x482E_isize,
-    // natural guest fields
-    GUEST_CR0 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 0) as isize,
-    GUEST_CR3 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 1) as isize,
-    GUEST_CR4 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 2) as isize,
-    GUEST_ES_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 3) as isize,
-    GUEST_CS_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 4) as isize,
-    GUEST_SS_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 5) as isize,
-    GUEST_DS_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 6) as isize,
-    GUEST_FS_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 7) as isize,
-    GUEST_GS_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 8) as isize,
-    GUEST_LDTR_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 9) as isize,
-    GUEST_TR_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 10) as isize,
-    GUEST_GDTR_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 11) as isize,
-    GUEST_IDTR_BASE = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 12) as isize,
-    GUEST_DR7 = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 13) as isize,
-    GUEST_RSP = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 14) as isize,
-    GUEST_RIP = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 15) as isize,
-    GUEST_RFLAGS = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 16) as isize,
-    GUEST_PENDING_DBG_EXCEPTIONS =
-        encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 17) as isize,
-    GUEST_SYSENTER_ESP = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 18) as isize,
-    GUEST_SYSENTER_EIP = encode_vmcs_field_full(VmcsType::GUEST, VmcsWidth::NATURAL, 19) as isize,
-
-    // [HOST] fields
-    // host 16 bit fields
-    HOST_ES_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 0) as isize,
-    HOST_CS_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 1) as isize,
-    HOST_SS_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 2) as isize,
-    HOST_DS_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 3) as isize,
-    HOST_FS_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 4) as isize,
-    HOST_GS_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 5) as isize,
-    HOST_TR_SELECTOR = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT16, 6) as isize,
-    // host 64 bit fields
-    HOST_PAT = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT64, 0) as isize,
-    HOST_EFER = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT64, 1) as isize,
-    HOST_PERF_GLOBAL_CTRL = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT64, 2) as isize,
-    // host 32 bit fields
-    HOST_SYSENTER_CS = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::BIT32, 0) as isize,
-    // host natural fields
-    HOST_CR0 = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 0) as isize,
-    HOST_CR3 = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 1) as isize,
-    HOST_CR4 = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 2) as isize,
-    HOST_FS_BASE = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 3) as isize,
-    HOST_GS_BASE = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 4) as isize,
-    HOST_TR_BASE = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 5) as isize,
-    HOST_GDTR_BASE = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 6) as isize,
-    HOST_IDTR_BASE = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 7) as isize,
-    HOST_SYSENTER_ESP = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 8) as isize,
-    HOST_SYSENTER_EIP = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 9) as isize,
-    HOST_RSP = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 10) as isize,
-    HOST_RIP = encode_vmcs_field_full(VmcsType::HOST, VmcsWidth::NATURAL, 11) as isize,
-}
-
-// (Intel Manual: 25.6 VM-EXECUTION CONTROL FIELDS)
-bitflags! {
-    // (Intel Manual: 25.6.1 Pin-Based VM-Execution Controls)
-    #[allow(non_camel_case_types)]
-    pub struct VmxPinBasedExecuteCtrl: u32 {
-        const EXTERNAL_INTERRUPT_EXITING = 1 << 0; // external interrupts cause VM exits
-        const NMI_EXITING = 1 << 3; // non-maskable interrupts (NMIs) cause VM exits.
-        const VIRTUAL_NMIS = 1 << 5; // NMIs are never blocked and the “blocking by NMI” bit (bit 3) in the interruptibility-state field indicates “virtual-NMI blocking”
-        const VMX_PREEMPTION_TIMER = 1 << 6; // the VMX-preemption timer counts down in VMX non-root operation
-        const PROCESS_POSTED_INTERRUPTS = 1 << 7; // he processor treats interrupts with the posted-interrupt notification vector
-    }
-
-    // (Intel Manual: 25.6.2 Processor-Based VM-Execution Controls)
-    #[allow(non_camel_case_types)]
-    pub struct VmxPrimaryProcessBasedExecuteCtrl: u32{
-        const INTERRUPT_WINDOW_EXITING = 1 << 2; // VM exits on interrupt window RFLAGS.IF = 1
-        const USE_TSC_OFFSETTING = 1 << 3; // TSC offsetting is enabled
-        const HLT_EXITING = 1 << 7;
-        const INVLPG_EXITING = 1 << 9;
-        const MWAIT_EXITING = 1 << 10;
-        const RDPMC_EXITING = 1 << 11;
-        const RDTSC_EXITING = 1 << 12;
-        const CR3_LOAD_EXITING = 1 << 15;
-        const CR3_STR_EXITING = 1 << 16;
-        const CR8_LOAD_EXITING = 1 << 19;
-        const CR8_STR_EXITING = 1 << 20;
-        const USE_TPR_SHADOW = 1 << 21;
-        const NMI_WINDOW_EXITING = 1 << 22;
-        const MOV_DR_EXITING = 1 << 23;
-        const UNCOND_IO_EXITING = 1 << 24;
-        const USE_IO_BITMAPS = 1 << 25;
-        const MONITOR_TRAP_FLAG = 1 << 27;
-        const USE_MSR_BITMAPS = 1 << 28;
-        const MONITOR_EXITING = 1 << 29;
-        const PAUSE_EXITING = 1 << 30;
-        const ACTIVATE_SECONDARY_CONTROLS = 1 << 31;
-    }
-
-    // (Intel Manual: 25.6.2 Processor-Based VM-Execution Controls)
-    pub struct VmxSecondaryProcessBasedExecuteCtrl: u32{
-        const VIRT_APIC_ACCESS = 1 << 0;
-        const ENABLE_EPT = 1 << 1;
-        const DESCRIPTOR_TABLE_EXITING = 1 << 2;
-        const ENABLE_RDTSCP = 1 << 3;
-        const VIRT_X2APIC_MODE = 1 << 4;
-        const ENABLE_VPID = 1 << 5;
-        const WBINVD_EXITING = 1 << 6;
-        const UNRESTRICTED_GUEST = 1 << 7;
-        const APCI_REGISTER_VIRT = 1 << 8;
-        const VIRT_INTR_DELIVERY = 1 << 9;
-        const PAUSE_LOOP_EXITING = 1 << 10;
-        const RDRAND_EXITING = 1 << 11;
-        const ENABLE_INVPCID = 1 << 12;
-        const ENABLE_VM_FUNCTIONS = 1 << 13;
-        const VMCS_SHADOWING = 1 << 14;
-        const ENABLE_ENCLS_EXITING = 1 << 15;
-        const RDSEED_EXITING = 1 << 16;
-        const ENABLE_PML = 1 << 17;
-        const EPT_VIOLATION_VE = 1 << 18;
-        const CONCEAL_VMX_FROM_PT = 1 << 19;
-        const ENABLE_XSAVES_XRSTORS = 1 << 20;
-        const PASID_TRANSLATION = 1 << 21;
-        const MODE_BASED_EPT_EXEC = 1 << 22;
-        const SUB_PAGE_WRITE_PERM = 1 << 23;
-        const PT_USE_GUEST_PYH_ADDR = 1 << 24;
-        const USE_TSC_SCALING = 1 << 25;
-        const ENABLE_USER_WAIT_PAUSE = 1 << 26;
-        const ENABLE_PCONFIG = 1 << 27;
-        const ENABLE_ENCLV_EXITING = 1 << 28;
-        const VMM_BUS_LOCK_DETECTION = 1 << 30;
-        const INST_TIMEOUT = 1 << 31;
-    }
-
-    // (Intel Manual: 25.7.1 VM-Exit Controls)
-    #[allow(non_camel_case_types)]
-    pub struct VmxPrimaryExitCtrl: u32 {
-        const SAVE_DBG_CTRLS = 1 << 2;
-        const HOST_ADDR_SPACE_SIZE = 1 << 9; // determines if a virtual processor will be in 64-bit mode after a VM exit
-        const LOAD_IA32_PERF_GLOBAL_CTRL = 1 << 12;
-        const ACK_INTERRUPT_ON_EXIT = 1 << 15;
-        const SAVE_IA32_PAT = 1 << 18;
-        const LOAD_IA32_PAT = 1 << 19;
-        const SAVE_IA32_EFER = 1 << 20;
-        const LOAD_IA32_EFER = 1 << 21;
-        const SAVE_VMX_PREEMPT_TIMER_VALUE = 1 << 22;
-        const CLEAR_IA32_BNDCFGS = 1 << 23;
-        const CONCEAL_VMX_FROM_PT = 1 << 24;
-        const CLEAR_IA32_RTIT_CTL = 1 << 25;
-        const CLEAR_IA32_LBR_CTL = 1 << 26;
-        const CLEAR_UINV = 1 << 27;
-        const LOAD_CET_STATE = 1 << 28;
-        const LOAD_PKRS = 1 << 29;
-        const SAVE_IA32_PERF_GLOBAL_CTL = 1 << 30;
-        const ACTIVATE_SECONDARY_CONTROLS = 1 << 31;
-    }
-
-    // (Intel Manual: 25.8.1 VM-Entry Controls)
-    #[allow(non_camel_case_types)]
-    pub struct VmxEntryCtrl: u32 {
-        const LOAD_DBG_CTRLS = 1 << 2;
-        const IA32E_MODE_GUEST = 1 << 9;
-        const ENTRY_TO_SMM = 1 << 10;
-        const DEACTIVATE_DUAL_MONITOR = 1 << 11;
-        const LOAD_IA32_PERF_GLOBAL_CTRL = 1 << 13;
-        const LOAD_IA32_PAT = 1 << 14;
-        const LOAD_IA32_EFER = 1 << 15;
-        const LOAD_IA32_BNDCFGS = 1 << 16;
-        const CONCEAL_VMX_FROM_PT = 1 << 17;
-        const LOAD_IA32_RTIT_CTL = 1 << 18;
-        const LOAD_UINV = 1 << 19;
-        const LOAD_CET_STATE = 1 << 20;
-        const LOAD_PKRS = 1 << 21;
-        const LOAD_IA32_PERF_GLOBAL_CTL = 1 << 22;
-    }
-
-}
-
-#[derive(FromPrimitive)]
-#[allow(non_camel_case_types)]
-pub enum VmxExitReason {
-    EXCEPTION_OR_NMI = 0,
-    EXTERNAL_INTERRUPT = 1,
-    TRIPLE_FAULT = 2,
-    INIT_SIGNAL = 3,
-    SIPI = 4,
-    IO_SMI = 5,
-    OTHER_SMI = 6,
-    INTERRUPT_WINDOW = 7,
-    NMI_WINDOW = 8,
-    TASK_SWITCH = 9,
-    CPUID = 10,
-    GETSEC = 11,
-    HLT = 12,
-    INVD = 13,
-    INVLPG = 14,
-    RDPMC = 15,
-    RDTSC = 16,
-    RSM = 17,
-    VMCALL = 18,
-    VMCLEAR = 19,
-    VMLAUNCH = 20,
-    VMPTRLD = 21,
-    VMPTRST = 22,
-    VMREAD = 23,
-    VMRESUME = 24,
-    VMWRITE = 25,
-    VMXOFF = 26,
-    VMXON = 27,
-    CR_ACCESS = 28,
-    DR_ACCESS = 29,
-    IO_INSTRUCTION = 30,
-    RDMSR = 31,
-    WRMSR = 32,
-    VM_ENTRY_FAILURE_INVALID_GUEST_STATE = 33,
-    VM_ENTRY_FAILURE_MSR_LOADING = 34,
-    MWAIT = 36,
-    MONITOR_TRAP_FLAG = 37,
-    MONITOR = 39,
-    PAUSE = 40,
-    VM_ENTRY_FAILURE_MACHINE_CHECK_EVENT = 41,
-    TPR_BELOW_THRESHOLD = 43,
-    APIC_ACCESS = 44,
-    VIRTUALIZED_EOI = 45,
-    ACCESS_GDTR_OR_IDTR = 46,
-    ACCESS_LDTR_OR_TR = 47,
-    EPT_VIOLATION = 48,
-    EPT_MISCONFIG = 49,
-    INVEPT = 50,
-    RDTSCP = 51,
-    VMX_PREEMPTION_TIMER_EXPIRED = 52,
-    INVVPID = 53,
-    WBINVD = 54,
-    XSETBV = 55,
-    APIC_WRITE = 56,
-    RDRAND = 57,
-    INVPCID = 58,
-    VMFUNC = 59,
-    ENCLS = 60,
-    RDSEED = 61,
-    PML_FULL = 62,
-    XSAVES = 63,
-    XRSTORS = 64,
-}
-
-impl From<i32> for VmxExitReason {
-    fn from(num: i32) -> Self {
-        match num {
-            0 => VmxExitReason::EXCEPTION_OR_NMI,
-            1 => VmxExitReason::EXTERNAL_INTERRUPT,
-            2 => VmxExitReason::TRIPLE_FAULT,
-            3 => VmxExitReason::INIT_SIGNAL,
-            4 => VmxExitReason::SIPI,
-            5 => VmxExitReason::IO_SMI,
-            6 => VmxExitReason::OTHER_SMI,
-            7 => VmxExitReason::INTERRUPT_WINDOW,
-            8 => VmxExitReason::NMI_WINDOW,
-            9 => VmxExitReason::TASK_SWITCH,
-            10 => VmxExitReason::CPUID,
-            11 => VmxExitReason::GETSEC,
-            12 => VmxExitReason::HLT,
-            13 => VmxExitReason::INVD,
-            14 => VmxExitReason::INVLPG,
-            15 => VmxExitReason::RDPMC,
-            16 => VmxExitReason::RDTSC,
-            17 => VmxExitReason::RSM,
-            18 => VmxExitReason::VMCALL,
-            19 => VmxExitReason::VMCLEAR,
-            20 => VmxExitReason::VMLAUNCH,
-            21 => VmxExitReason::VMPTRLD,
-            22 => VmxExitReason::VMPTRST,
-            23 => VmxExitReason::VMREAD,
-            24 => VmxExitReason::VMRESUME,
-            25 => VmxExitReason::VMWRITE,
-            26 => VmxExitReason::VMXOFF,
-            27 => VmxExitReason::VMXON,
-            28 => VmxExitReason::CR_ACCESS,
-            29 => VmxExitReason::DR_ACCESS,
-            30 => VmxExitReason::IO_INSTRUCTION,
-            31 => VmxExitReason::RDMSR,
-            32 => VmxExitReason::WRMSR,
-            33 => VmxExitReason::VM_ENTRY_FAILURE_INVALID_GUEST_STATE,
-            34 => VmxExitReason::VM_ENTRY_FAILURE_MSR_LOADING,
-            36 => VmxExitReason::MWAIT,
-            37 => VmxExitReason::MONITOR_TRAP_FLAG,
-            39 => VmxExitReason::MONITOR,
-            40 => VmxExitReason::PAUSE,
-            41 => VmxExitReason::VM_ENTRY_FAILURE_MACHINE_CHECK_EVENT,
-            43 => VmxExitReason::TPR_BELOW_THRESHOLD,
-            44 => VmxExitReason::APIC_ACCESS,
-            45 => VmxExitReason::VIRTUALIZED_EOI,
-            46 => VmxExitReason::ACCESS_GDTR_OR_IDTR,
-            47 => VmxExitReason::ACCESS_LDTR_OR_TR,
-            48 => VmxExitReason::EPT_VIOLATION,
-            49 => VmxExitReason::EPT_MISCONFIG,
-            50 => VmxExitReason::INVEPT,
-            51 => VmxExitReason::RDTSCP,
-            52 => VmxExitReason::VMX_PREEMPTION_TIMER_EXPIRED,
-            53 => VmxExitReason::INVVPID,
-            54 => VmxExitReason::WBINVD,
-            55 => VmxExitReason::XSETBV,
-            56 => VmxExitReason::APIC_WRITE,
-            57 => VmxExitReason::RDRAND,
-            58 => VmxExitReason::INVPCID,
-            59 => VmxExitReason::VMFUNC,
-            60 => VmxExitReason::ENCLS,
-            61 => VmxExitReason::RDSEED,
-            62 => VmxExitReason::PML_FULL,
-            63 => VmxExitReason::XSAVES,
-            64 => VmxExitReason::XRSTORS,
-            _ => panic!("Invalid VmxExitReason number: {}", num),
-        }
-    }
-}
-
-const fn encode_vmcs_field(
-    access_type: VmcsAccessType,
-    vmcs_type: VmcsType,
-    vmcs_width: VmcsWidth,
-    index: u32,
-) -> u32 {
-    let mut encoding: u32 = 0;
-    encoding |=
-        (access_type as u32) | (index) << 1 | (vmcs_type as u32) << 10 | (vmcs_width as u32) << 13;
-    return encoding;
-}
-
-const fn encode_vmcs_field_full(vmcs_type: VmcsType, vmcs_width: VmcsWidth, index: u32) -> u32 {
-    encode_vmcs_field(VmcsAccessType::FULL, vmcs_type, vmcs_width, index)
-}
-
-// fn decode_vmcs_field(field: u32) -> (VmcsAccessType, VmcsType, VmcsWidth, u16){
-//     (FromPrimitive::from_u32(field & 1).unwrap() ,
-//         FromPrimitive::from_u32((field>>10) & 0x3).unwrap(),
-//         FromPrimitive::from_u32((field>>13) & 0x3).unwrap(),
-//         ((field>>1) & 0x1ff) as u16
-//     )
-// }

kernel/src/arch/x86_64/kvm/vmx/vmexit.rs

@@ -1,271 +0,0 @@
-use super::vmcs::{VmcsFields, VmxExitReason};
-use super::vmx_asm_wrapper::{vmx_vmread, vmx_vmwrite};
-
-use crate::virt::kvm::vm;
-use core::arch::asm;
-use log::debug;
-use system_error::SystemError;
-use x86::vmx::vmcs::ro::GUEST_PHYSICAL_ADDR_FULL;
-
-#[derive(FromPrimitive)]
-#[allow(non_camel_case_types)]
-pub enum APICExceptionVectors {
-    EXCEPTION_DIVIDE_ERROR,
-    EXCEPTION_DEBUG_BREAKPOINT,
-    EXCEPTION_NMI,
-    EXCEPTION_BREAKPOINT,
-    EXCEPTION_OVERFLOW,
-    EXCEPTION_BOUND_RANGE_EXCEEDED,
-    EXCEPTION_UNDEFINED_OPCODE,
-    EXCEPTION_NO_MATH_COPROCESSOR,
-    EXCEPTION_DOUBLE_FAULT,
-    EXCEPTION_RESERVED0,
-    EXCEPTION_INVALID_TASK_SEGMENT_SELECTOR,
-    EXCEPTION_SEGMENT_NOT_PRESENT,
-    EXCEPTION_STACK_SEGMENT_FAULT,
-    EXCEPTION_GENERAL_PROTECTION_FAULT,
-    EXCEPTION_PAGE_FAULT,
-    EXCEPTION_RESERVED1,
-    EXCEPTION_MATH_FAULT,
-    EXCEPTION_ALIGNMENT_CHECK,
-    EXCEPTION_MACHINE_CHECK,
-    EXCEPTION_SIMD_FLOATING_POINT_NUMERIC_ERROR,
-    EXCEPTION_VIRTUAL_EXCEPTION,
-    EXCEPTION_RESERVED2,
-    EXCEPTION_RESERVED3,
-    EXCEPTION_RESERVED4,
-    EXCEPTION_RESERVED5,
-    EXCEPTION_RESERVED6,
-    EXCEPTION_RESERVED7,
-    EXCEPTION_RESERVED8,
-    EXCEPTION_RESERVED9,
-    EXCEPTION_RESERVED10,
-    EXCEPTION_RESERVED11,
-    EXCEPTION_RESERVED12,
-}
-
-#[derive(FromPrimitive)]
-#[allow(non_camel_case_types)]
-pub enum InterruptType {
-    INTERRUPT_TYPE_EXTERNAL_INTERRUPT = 0,
-    INTERRUPT_TYPE_RESERVED = 1,
-    INTERRUPT_TYPE_NMI = 2,
-    INTERRUPT_TYPE_HARDWARE_EXCEPTION = 3,
-    INTERRUPT_TYPE_SOFTWARE_INTERRUPT = 4,
-    INTERRUPT_TYPE_PRIVILEGED_SOFTWARE_INTERRUPT = 5,
-    INTERRUPT_TYPE_SOFTWARE_EXCEPTION = 6,
-    INTERRUPT_TYPE_OTHER_EVENT = 7,
-}
-
-pub fn vmexit_vmx_instruction_executed() -> Result<(), SystemError> {
-    let valid: u32 = 1;
-    let vector: u32 = APICExceptionVectors::EXCEPTION_UNDEFINED_OPCODE as u32;
-    let interrupt_type = InterruptType::INTERRUPT_TYPE_HARDWARE_EXCEPTION as u32;
-    let deliver_code: u32 = 0;
-    let interrupt_info = valid << 31 | interrupt_type << 8 | deliver_code << 11 | vector;
-    vmx_vmwrite(
-        VmcsFields::CTRL_VM_ENTRY_INTR_INFO_FIELD as u32,
-        interrupt_info as u64,
-    )?;
-    vmx_vmwrite(VmcsFields::CTRL_VM_ENTRY_INSTR_LEN as u32, 0)?;
-    let rflags: u64 = vmx_vmread(VmcsFields::GUEST_RFLAGS as u32).unwrap() | 0x0001_0000; // set RF flags
-    vmx_vmwrite(VmcsFields::GUEST_RFLAGS as u32, rflags)?;
-    Ok(())
-}
-
-// pub fn vmexit_cpuid_handler(guest_cpu_context: &mut GuestCpuContext) -> Result<(), SystemError>{
-//     let rax = guest_cpu_context.rax;
-//     let rcx = guest_cpu_context.rcx;
-//     // let rdx = guest_cpu_context.rdx;
-//     // let rbx = guest_cpu_context.rbx;
-//     cpuid!(rax, rcx);
-//     unsafe{asm!("mov {}, rax", out(reg) guest_cpu_context.rax)};
-//     unsafe{asm!("mov {}, rcx", out(reg) guest_cpu_context.rcx)};
-//     unsafe{asm!("mov {}, rdx", out(reg) guest_cpu_context.rdx)};
-//     unsafe{asm!("mov {}, rbx", out(reg) guest_cpu_context.rbx)};
-//     Ok(())
-// }
-
-unsafe fn save_rpg() {
-    asm!(
-        "push    rax",
-        "push    rcx",
-        "push    rdx",
-        "push    rbx",
-        "push    rbp",
-        "push    rsi",
-        "push    rdi",
-        "push    r8",
-        "push    r9",
-        "push    r10",
-        "push    r11",
-        "push    r12",
-        "push    r13",
-        "push    r14",
-        "push    r15",
-    );
-}
-
-unsafe fn restore_rpg() {
-    asm!(
-        "pop    r15",
-        "pop    r14",
-        "pop    r13",
-        "pop    r12",
-        "pop    r11",
-        "pop    r10",
-        "pop    r9",
-        "pop    r8",
-        "pop    rdi",
-        "pop    rsi",
-        "pop    rbp",
-        "pop    rbx",
-        "pop    rdx",
-        "pop    rcx",
-        "pop    rax",
-    );
-}
-
-#[repr(C)]
-#[allow(dead_code)]
-pub struct GuestCpuContext {
-    pub r15: u64,
-    pub r14: u64,
-    pub r13: u64,
-    pub r12: u64,
-    pub r11: u64,
-    pub r10: u64,
-    pub r9: u64,
-    pub r8: u64,
-    pub rdi: u64,
-    pub rsi: u64,
-    pub rbp: u64,
-    pub rbx: u64,
-    pub rdx: u64,
-    pub rcx: u64,
-    pub rax: u64,
-}
-
-#[no_mangle]
-pub extern "C" fn vmx_return() {
-    debug!("vmx_return!");
-    unsafe { save_rpg() };
-    vmexit_handler();
-    // XMM registers are vector registers. They're renamed onto the FP/SIMD register file
-    // unsafe {asm!(
-    //     "sub     rsp, 60h",
-    //     "movaps  xmmword ptr [rsp +  0h], xmm0",
-    //     "movaps  xmmword ptr [rsp + 10h], xmm1",
-    //     "movaps  xmmword ptr [rsp + 20h], xmm2",
-    //     "movaps  xmmword ptr [rsp + 30h], xmm3",
-    //     "movaps  xmmword ptr [rsp + 40h], xmm4",
-    //     "movaps  xmmword ptr [rsp + 50h], xmm5",
-
-    //     "mov     rdi, rsp",
-    //     "sub     rsp, 20h",
-    //     "call vmexit_handler",
-    //     "add     rsp, 20h",
-
-    //     "movaps  xmm0, xmmword ptr [rsp +  0h]",
-    //     "movaps  xmm1, xmmword ptr [rsp + 10h]",
-    //     "movaps  xmm2, xmmword ptr [rsp + 20h]",
-    //     "movaps  xmm3, xmmword ptr [rsp + 30h]",
-    //     "movaps  xmm4, xmmword ptr [rsp + 40h]",
-    //     "movaps  xmm5, xmmword ptr [rsp + 50h]",
-    //     "add     rsp, 60h",
-    // clobber_abi("C"),
-    // )};
-    unsafe { restore_rpg() };
-    unsafe { asm!("vmresume",) };
-}
-
-#[no_mangle]
-extern "C" fn vmexit_handler() {
-    // let guest_cpu_context = unsafe { guest_cpu_context_ptr.as_mut().unwrap() };
-    // debug!("guest_cpu_context_ptr={:p}",guest_cpu_context_ptr);
-    debug!("vmexit handler!");
-
-    let exit_reason = vmx_vmread(VmcsFields::VMEXIT_EXIT_REASON as u32).unwrap() as u32;
-    let exit_basic_reason = exit_reason & 0x0000_ffff;
-    let guest_rip = vmx_vmread(VmcsFields::GUEST_RIP as u32).unwrap();
-    // let guest_rsp = vmx_vmread(VmcsFields::GUEST_RSP as u32).unwrap();
-    debug!("guest_rip={:x}", guest_rip);
-    let _guest_rflags = vmx_vmread(VmcsFields::GUEST_RFLAGS as u32).unwrap();
-
-    match VmxExitReason::from(exit_basic_reason as i32) {
-        VmxExitReason::VMCALL
-        | VmxExitReason::VMCLEAR
-        | VmxExitReason::VMLAUNCH
-        | VmxExitReason::VMPTRLD
-        | VmxExitReason::VMPTRST
-        | VmxExitReason::VMREAD
-        | VmxExitReason::VMRESUME
-        | VmxExitReason::VMWRITE
-        | VmxExitReason::VMXOFF
-        | VmxExitReason::VMXON
-        | VmxExitReason::VMFUNC
-        | VmxExitReason::INVEPT
-        | VmxExitReason::INVVPID => {
-            debug!("vmexit handler: vmx instruction!");
-            vmexit_vmx_instruction_executed().expect("previledge instruction handle error");
-        }
-        VmxExitReason::CPUID => {
-            debug!("vmexit handler: cpuid instruction!");
-            // vmexit_cpuid_handler(guest_cpu_context);
-            adjust_rip(guest_rip).unwrap();
-        }
-        VmxExitReason::RDMSR => {
-            debug!("vmexit handler: rdmsr instruction!");
-            adjust_rip(guest_rip).unwrap();
-        }
-        VmxExitReason::WRMSR => {
-            debug!("vmexit handler: wrmsr instruction!");
-            adjust_rip(guest_rip).unwrap();
-        }
-        VmxExitReason::TRIPLE_FAULT => {
-            debug!("vmexit handler: triple fault!");
-            adjust_rip(guest_rip).unwrap();
-        }
-        VmxExitReason::EPT_VIOLATION => {
-            debug!("vmexit handler: ept violation!");
-            let gpa = vmx_vmread(GUEST_PHYSICAL_ADDR_FULL).unwrap();
-            let exit_qualification = vmx_vmread(VmcsFields::VMEXIT_QUALIFICATION as u32).unwrap();
-            /* It is a write fault? */
-            let mut error_code = exit_qualification & (1 << 1);
-            /* It is a fetch fault? */
-            error_code |= (exit_qualification << 2) & (1 << 4);
-            /* ept page table is present? */
-            error_code |= (exit_qualification >> 3) & (1 << 0);
-
-            let kvm = vm(0).unwrap();
-            let vcpu = kvm.vcpu[0].clone();
-            // Use the data
-            let kvm_ept_page_fault = vcpu.lock().mmu.page_fault.unwrap();
-            kvm_ept_page_fault(&mut vcpu.lock(), gpa, error_code as u32, false)
-                .expect("ept page fault error");
-        }
-        _ => {
-            debug!(
-                "vmexit handler: unhandled vmexit reason: {}!",
-                exit_basic_reason
-            );
-
-            let info = vmx_vmread(VmcsFields::VMEXIT_INSTR_LEN as u32).unwrap() as u32;
-            debug!("vmexit handler: VMEXIT_INSTR_LEN: {}!", info);
-            let info = vmx_vmread(VmcsFields::VMEXIT_INSTR_INFO as u32).unwrap() as u32;
-            debug!("vmexit handler: VMEXIT_INSTR_INFO: {}!", info);
-            let info = vmx_vmread(VmcsFields::CTRL_EXPECTION_BITMAP as u32).unwrap() as u32;
-            debug!("vmexit handler: CTRL_EXPECTION_BITMAP: {}!", info);
-
-            adjust_rip(guest_rip).unwrap();
-            // panic!();
-        }
-    }
-}
-
-#[no_mangle]
-pub fn adjust_rip(rip: u64) -> Result<(), SystemError> {
-    let instruction_length = vmx_vmread(VmcsFields::VMEXIT_INSTR_LEN as u32)?;
-    vmx_vmwrite(VmcsFields::GUEST_RIP as u32, rip + instruction_length)?;
-    Ok(())
-}

kernel/src/arch/x86_64/kvm/vmx/vmx_asm_wrapper.rs

@@ -1,97 +0,0 @@
-use super::vmcs::VmcsFields;
-
-use core::arch::asm;
-use log::debug;
-use system_error::SystemError;
-use x86;
-/// Enable VMX operation.
-pub fn vmxon(vmxon_pa: u64) -> Result<(), SystemError> {
-    match unsafe { x86::bits64::vmx::vmxon(vmxon_pa) } {
-        Ok(_) => Ok(()),
-        Err(e) => {
-            debug!("vmxon fail: {:?}", e);
-            Err(SystemError::EVMXONFailed)
-        }
-    }
-}
-
-/// Disable VMX operation.
-pub fn vmxoff() -> Result<(), SystemError> {
-    match unsafe { x86::bits64::vmx::vmxoff() } {
-        Ok(_) => Ok(()),
-        Err(_) => Err(SystemError::EVMXOFFFailed),
-    }
-}
-
-/// vmrite the current VMCS.
-pub fn vmx_vmwrite(vmcs_field: u32, value: u64) -> Result<(), SystemError> {
-    match unsafe { x86::bits64::vmx::vmwrite(vmcs_field, value) } {
-        Ok(_) => Ok(()),
-        Err(e) => {
-            debug!("vmx_write fail: {:?}", e);
-            debug!("vmcs_field: {:x}", vmcs_field);
-            Err(SystemError::EVMWRITEFailed)
-        }
-    }
-}
-
-/// vmread the current VMCS.
-pub fn vmx_vmread(vmcs_field: u32) -> Result<u64, SystemError> {
-    match unsafe { x86::bits64::vmx::vmread(vmcs_field) } {
-        Ok(value) => Ok(value),
-        Err(e) => {
-            debug!("vmx_read fail: {:?}", e);
-            Err(SystemError::EVMREADFailed)
-        }
-    }
-}
-
-pub fn vmx_vmptrld(vmcs_pa: u64) -> Result<(), SystemError> {
-    match unsafe { x86::bits64::vmx::vmptrld(vmcs_pa) } {
-        Ok(_) => Ok(()),
-        Err(_) => Err(SystemError::EVMPRTLDFailed),
-    }
-}
-
-pub fn vmx_vmlaunch() -> Result<(), SystemError> {
-    let host_rsp = VmcsFields::HOST_RSP as u32;
-    let host_rip = VmcsFields::HOST_RIP as u32;
-    unsafe {
-        asm!(
-            "push    rbp",
-            "push    rcx",
-            "push    rdx",
-            "push    rsi",
-            "push    rdi",
-            "vmwrite {0:r}, rsp",
-            "lea rax, 2f[rip]",
-            "vmwrite {1:r}, rax",
-            "vmlaunch",
-            "2:",
-            "pop    rdi",
-            "pop    rsi",
-            "pop    rdx",
-            "pop    rcx",
-            "pop    rbp",
-            "call vmx_return",
-            in(reg) host_rsp,
-            in(reg) host_rip,
-            clobber_abi("C"),
-        )
-    }
-    Ok(())
-    // match unsafe { x86::bits64::vmx::vmlaunch() } {
-    //     Ok(_) => Ok(()),
-    //     Err(e) => {
-    //         debug!("vmx_launch fail: {:?}", e);
-    //         Err(SystemError::EVMLAUNCHFailed)
-    //     },
-    // }
-}
-
-pub fn vmx_vmclear(vmcs_pa: u64) -> Result<(), SystemError> {
-    match unsafe { x86::bits64::vmx::vmclear(vmcs_pa) } {
-        Ok(_) => Ok(()),
-        Err(_) => Err(SystemError::EVMPRTLDFailed),
-    }
-}

kernel/src/arch/x86_64/mm/mod.rs

@@ -36,9 +36,6 @@ use core::fmt::Debug;
 
 use core::sync::atomic::{compiler_fence, AtomicBool, Ordering};
 
-use super::kvm::vmx::vmcs::VmcsFields;
-use super::kvm::vmx::vmx_asm_wrapper::vmx_vmread;
-
 pub type PageMapper =
     crate::mm::page::PageMapper<crate::arch::x86_64::mm::X86_64MMArch, LockedFrameAllocator>;
 
@@ -199,10 +196,8 @@ impl MemoryManagementArch for X86_64MMArch {
                 compiler_fence(Ordering::SeqCst);
                 return PhysAddr::new(cr3);
             }
-            PageTableKind::EPT => {
-                let eptp =
-                    vmx_vmread(VmcsFields::CTRL_EPTP_PTR as u32).expect("Failed to read eptp");
-                return PhysAddr::new(eptp as usize);
+            _ => {
+                todo!("Unsupported table kind: {:?}", table_kind);
             }
         }
     }

kernel/src/arch/x86_64/mod.rs

@@ -9,7 +9,6 @@ pub mod init;
 pub mod interrupt;
 pub mod ipc;
 pub mod kprobe;
-pub mod kvm;
 pub mod libs;
 pub mod mm;
 pub mod msi;
@@ -30,7 +29,6 @@ pub use self::mm::X86_64MMArch as MMArch;
 pub use interrupt::X86_64InterruptArch as CurrentIrqArch;
 
 pub use crate::arch::asm::pio::X86_64PortIOArch as CurrentPortIOArch;
-pub use kvm::X86_64KVMArch as KVMArch;
 
 #[allow(unused_imports)]
 pub use crate::arch::ipc::signal::X86_64SignalArch as CurrentSignalArch;

kernel/src/arch/x86_64/vm/mmu/kvm_mmu.rs

@@ -2,7 +2,6 @@ use crate::arch::mm::X86_64MMArch;
 use crate::arch::vm::asm::VmxAsm;
 use crate::arch::vm::kvm_host::page::KVM_MIN_FREE_MMU_PAGES;
 use crate::mm::PhysAddr;
-use crate::virt::kvm::host_mem::PAGE_SHIFT;
 use crate::{
     arch::{mm::LockedFrameAllocator, MMArch, VirtCpuArch},
     libs::spinlock::{SpinLock, SpinLockGuard},
@@ -37,7 +36,7 @@ static mut MAX_TDP_LEVEL: usize = 0;
 static mut SHADOW_ACCESSED_MASK: usize = 0;
 
 static mut MAX_HUGE_PAGE_LEVEL: PageLevel = PageLevel::None;
-
+pub const PAGE_SHIFT: u32 = 12;
 pub const PAGE_SIZE: u64 = 1 << PAGE_SHIFT;
 
 pub fn is_tdp_mmu_enabled() -> bool {

kernel/src/arch/x86_64/vm/mmu/mmu_internal.rs

@@ -1,4 +1,4 @@
-use crate::mm::page::EntryFlags;
+use crate::{arch::vm::mmu::kvm_mmu::PAGE_SHIFT, mm::page::EntryFlags};
 use alloc::sync::Arc;
 use core::{intrinsics::unlikely, ops::Index};
 use log::{debug, warn};
@@ -18,14 +18,11 @@ use crate::{
         MMArch,
     },
     mm::PhysAddr,
-    virt::{
-        kvm::host_mem::PAGE_SHIFT,
-        vm::kvm_host::{
-            mem::{LockedKvmMemSlot, LockedVmMemSlotSet, UserMemRegionFlag, __gfn_to_pfn_memslot},
-            search_memslots,
-            vcpu::VirtCpu,
-            Vm,
-        },
+    virt::vm::kvm_host::{
+        mem::{LockedKvmMemSlot, LockedVmMemSlotSet, UserMemRegionFlag, __gfn_to_pfn_memslot},
+        search_memslots,
+        vcpu::VirtCpu,
+        Vm,
     },
 };
 

kernel/src/arch/x86_64/vm/vmx/ept/mod.rs

@@ -227,7 +227,7 @@ pub struct EptPageMapper {
     /// EPT页表映射器
     //mapper: PageMapper,//PageTableKind::EPT, LockedFrameAllocator
     /// 标记当前映射器是否为只读
-    readonly: bool,
+    _readonly: bool,
     // EPT页表根地址
     root_page_addr: PhysAddr,
     /// 页分配器
@@ -273,7 +273,7 @@ impl EptPageMapper {
         let readonly = prev_count > 0;
         let root_page_addr = Self::root_page_addr();
         return Self {
-            readonly,
+            _readonly: readonly,
             root_page_addr,
             frame_allocator: LockedFrameAllocator,
         };

kernel/src/driver/tty/tty_ldisc/ntty.rs

@@ -1,3 +1,4 @@
+use alloc::boxed::Box;
 use core::intrinsics::likely;
 use core::ops::BitXor;
 
@@ -116,8 +117,8 @@ pub struct NTtyData {
     echo_tail: usize,
 
     /// 写者与读者共享
-    read_buf: [u8; NTTY_BUFSIZE],
-    echo_buf: [u8; NTTY_BUFSIZE],
+    read_buf: Box<[u8; NTTY_BUFSIZE]>,
+    echo_buf: Box<[u8; NTTY_BUFSIZE]>,
 
     read_flags: StaticBitmap<NTTY_BUFSIZE>,
     char_map: StaticBitmap<256>,
@@ -126,6 +127,7 @@ pub struct NTtyData {
 }
 
 impl NTtyData {
+    #[inline(never)]
     pub fn new() -> Self {
         Self {
             read_head: 0,
@@ -147,8 +149,8 @@ impl NTtyData {
             cursor_column: 0,
             canon_cursor_column: 0,
             echo_tail: 0,
-            read_buf: [0; NTTY_BUFSIZE],
-            echo_buf: [0; NTTY_BUFSIZE],
+            read_buf: Box::new([0; NTTY_BUFSIZE]),
+            echo_buf: Box::new([0; NTTY_BUFSIZE]),
             read_flags: StaticBitmap::new(),
             char_map: StaticBitmap::new(),
             tty: Weak::default(),

kernel/src/mm/allocator/kernel_allocator.rs

@@ -15,7 +15,7 @@ use core::{
 
 use super::{
     page_frame::{FrameAllocator, PageFrameCount},
-    slab::{slab_init_state, SLABALLOCATOR},
+    slab::SLABALLOCATOR,
 };
 
 /// 类kmalloc的分配器应当实现的trait
@@ -95,7 +95,7 @@ impl LocalAlloc for KernelAllocator {
     }
 
     unsafe fn local_dealloc(&self, ptr: *mut u8, layout: Layout) {
-        if allocator_select_condition(layout) || ((ptr as usize) % 4096) == 0 {
+        if allocator_select_condition(layout) {
             self.free_in_buddy(ptr, layout)
         } else if let Some(ref mut slab) = SLABALLOCATOR {
             slab.deallocate(ptr, layout).unwrap()
@@ -137,7 +137,7 @@ unsafe impl GlobalAlloc for KernelAllocator {
 
 /// 判断选择buddy分配器还是slab分配器
 fn allocator_select_condition(layout: Layout) -> bool {
-    layout.size() > 2048 || !slab_init_state()
+    layout.size() > 2048
 }
 
 fn alloc_debug_log(source: LogSource, layout: Layout, ptr: *mut u8) {

kernel/src/mm/allocator/slab.rs

@@ -72,11 +72,6 @@ pub unsafe fn slab_init() {
     SLABINITSTATE = true.into();
 }
 
-// 查看slab初始化状态
-pub fn slab_init_state() -> bool {
-    unsafe { *SLABINITSTATE.get_mut() }
-}
-
 pub unsafe fn slab_usage() -> SlabUsage {
     if let Some(ref mut slab) = SLABALLOCATOR {
         slab.zone.usage()

kernel/src/virt/mod.rs

@@ -1,2 +1 @@
-pub mod kvm;
 pub mod vm;

kernel/src/virt/vm/kvm_host/mem.rs

@@ -8,17 +8,17 @@ use log::debug;
 use system_error::SystemError;
 
 use crate::{
-    arch::{vm::mmu::kvm_mmu::PAGE_SIZE, MMArch},
+    arch::{
+        vm::mmu::kvm_mmu::{PAGE_SHIFT, PAGE_SIZE},
+        MMArch,
+    },
     libs::{
         rbtree::RBTree,
         rwlock::{RwLock, RwLockReadGuard, RwLockWriteGuard},
         spinlock::{SpinLock, SpinLockGuard},
     },
     mm::{kernel_mapper::KernelMapper, page::EntryFlags, MemoryManagementArch, VirtAddr},
-    virt::{
-        kvm::host_mem::PAGE_SHIFT,
-        vm::{kvm_host::KVM_ADDRESS_SPACE_NUM, user_api::KvmUserspaceMemoryRegion},
-    },
+    virt::vm::{kvm_host::KVM_ADDRESS_SPACE_NUM, user_api::KvmUserspaceMemoryRegion},
 };
 
 use super::{LockedVm, Vm};

kernel/src/virt/vm/kvm_host/mod.rs

@@ -200,17 +200,17 @@ impl Vm {
             kvm: Some(self.lock_vm_ref.clone()),
             vcpu_id: id,
             pid: None,
-            preempted: false,
-            ready: false,
-            last_used_slot: None,
-            stats_id: format!("kvm-{}/vcpu-{}", ProcessManager::current_pid().data(), id),
-            pv_time: GfnToHvaCache::init(self.lock_vm_ref.clone(), PfnCacheUsage::HOST_USES_PFN),
+            _preempted: false,
+            _ready: false,
+            _last_used_slot: None,
+            _stats_id: format!("kvm-{}/vcpu-{}", ProcessManager::current_pid().data(), id),
+            _pv_time: GfnToHvaCache::init(self.lock_vm_ref.clone(), PfnCacheUsage::HOST_USES_PFN),
             arch: VirtCpuArch::new(),
             private: None,
             request: VirtCpuRequest::empty(),
             guest_debug: GuestDebug::empty(),
             run: unsafe { Some(Box::new_zeroed().assume_init()) },
-            vcpu_idx: 0,
+            _vcpu_idx: 0,
             mode: VcpuMode::OutsideGuestMode,
             stat: Default::default(),
         };

kernel/src/virt/vm/kvm_host/vcpu.rs

@@ -56,13 +56,13 @@ pub struct VirtCpu {
     /// 从用户层获取
     pub vcpu_id: usize,
     /// id alloctor获取
-    pub vcpu_idx: usize,
+    pub _vcpu_idx: usize,
     pub pid: Option<Pid>,
-    pub preempted: bool,
-    pub ready: bool,
-    pub last_used_slot: Option<Arc<KvmMemSlot>>,
-    pub stats_id: String,
-    pub pv_time: GfnToHvaCache,
+    pub _preempted: bool,
+    pub _ready: bool,
+    pub _last_used_slot: Option<Arc<KvmMemSlot>>,
+    pub _stats_id: String,
+    pub _pv_time: GfnToHvaCache,
     pub arch: VirtCpuArch,
     pub stat: VirtCpuStat,
 

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