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b/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 diff --git a/kernel/crates/rust-slabmalloc/src/pages.rs b/kernel/crates/rust-slabmalloc/src/pages.rs index 22f3231f..872d9bf4 100644 --- a/kernel/crates/rust-slabmalloc/src/pages.rs +++ b/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>, /// Previous element in list (used by `PageList`) prev: Rawlink>, - /// 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> { 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| { diff --git a/kernel/crates/rust-slabmalloc/src/sc.rs b/kernel/crates/rust-slabmalloc/src/sc.rs index 2c711bb1..cdfa9881 100644 --- a/kernel/crates/rust-slabmalloc/src/sc.rs +++ b/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, layout: Layout, - slab_callback: &'static dyn CallBack, - ) -> Result<(), AllocationError> { + ) -> Result { 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) } } diff --git a/kernel/crates/rust-slabmalloc/src/tests.rs b/kernel/crates/rust-slabmalloc/src/tests.rs new file mode 100644 index 00000000..8161c94a --- /dev/null +++ b/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 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> = 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::(), 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::(), 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 = 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 = 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 = 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 = 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 = 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 + } +} diff --git a/kernel/crates/rust-slabmalloc/src/zone.rs b/kernel/crates/rust-slabmalloc/src/zone.rs index 3e6d7cad..2fa9a828 100644 --- a/kernel/crates/rust-slabmalloc/src/zone.rs +++ b/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), } } diff --git a/kernel/src/arch/x86_64/kvm/mod.rs b/kernel/src/arch/x86_64/kvm/mod.rs deleted file mode 100644 index d5f6c07a..00000000 --- a/kernel/src/arch/x86_64/kvm/mod.rs +++ /dev/null @@ -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, // 所有分配的mmu page都挂到active_mmu_pages上 - // zapped_obsolete_pages: LinkedList, // 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 { - error!("unknown kvm ioctl cmd: {}", cmd); - return Err(SystemError::EINVAL); - } - - pub fn kvm_arch_vcpu_create(id: u32) -> Result>, 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) -> Result<(), SystemError> { - kvm_vcpu_mtrr_init(vcpu)?; - kvm_mmu_setup(vcpu); - Ok(()) - } - pub fn kvm_arch_vcpu_ioctl_run(_vcpu: &Mutex) -> 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"); - } -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/ept.rs b/kernel/src/arch/x86_64/kvm/vmx/ept.rs deleted file mode 100644 index 838c1a15..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/ept.rs +++ /dev/null @@ -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, - ) -> 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) - // } -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/kvm_emulation.rs b/kernel/src/arch/x86_64/kvm/vmx/kvm_emulation.rs deleted file mode 100644 index 6be1b456..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/kvm_emulation.rs +++ /dev/null @@ -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 */ -// } diff --git a/kernel/src/arch/x86_64/kvm/vmx/mmu.rs b/kernel/src/arch/x86_64/kvm/vmx/mmu.rs deleted file mode 100644 index b1f89ff6..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/mmu.rs +++ /dev/null @@ -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 u64>, - pub set_eptp: Option Result<(), SystemError>>, - pub page_fault: Option, - // get_pdptr: Option u64>, // Page Directory Pointer Table Register?暂时不知道和CR3的区别是什么 - // inject_page_fault: Option, - // gva_to_gpa: Option u64>, - // translate_gpa: Option u64>, - // sync_page: Option, - // invlpg: Option, // invalid entry - // update_pte: Option, -} - -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) { - // TODO: init_kvm_softmmu(vcpu), init_kvm_nested_mmu(vcpu) - init_kvm_tdp_mmu(vcpu); -} - -pub fn kvm_vcpu_mtrr_init(_vcpu: &Mutex) -> Result<(), SystemError> { - check_ept_features()?; - Ok(()) -} - -pub fn init_kvm_tdp_mmu(vcpu: &Mutex) { - 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 { - 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 { - 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(()) -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/mod.rs b/kernel/src/arch/x86_64/kvm/vmx/mod.rs deleted file mode 100644 index 79353c24..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/mod.rs +++ /dev/null @@ -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 */ - } -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/seg.rs b/kernel/src/arch/x86_64/kvm/vmx/seg.rs deleted file mode 100644 index 152f38f4..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/seg.rs +++ /dev/null @@ -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(()) -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/vcpu.rs b/kernel/src/arch/x86_64/kvm/vmx/vcpu.rs deleted file mode 100644 index 3d3216c1..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/vcpu.rs +++ /dev/null @@ -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, - 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, - pub vmcs_region_physical_address: u64, // vmptrld, vmclear需要该地址 - pub msr_bitmap: Box, - 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 { - let vmxon_region: Box = unsafe { - Box::try_new_zeroed_in(Global) - .expect("Try new zeroed fail!") - .assume_init() - }; - let vmcs_region: Box = unsafe { - Box::try_new_zeroed_in(Global) - .expect("Try new zeroed fail!") - .assume_init() - }; - let msr_bitmap: Box = 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 { - 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 = 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 = - 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 = 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) }; -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/vmcs.rs b/kernel/src/arch/x86_64/kvm/vmx/vmcs.rs deleted file mode 100644 index 5e95e8e9..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/vmcs.rs +++ /dev/null @@ -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 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 -// ) -// } diff --git a/kernel/src/arch/x86_64/kvm/vmx/vmexit.rs b/kernel/src/arch/x86_64/kvm/vmx/vmexit.rs deleted file mode 100644 index 48d9e054..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/vmexit.rs +++ /dev/null @@ -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(()) -} diff --git a/kernel/src/arch/x86_64/kvm/vmx/vmx_asm_wrapper.rs b/kernel/src/arch/x86_64/kvm/vmx/vmx_asm_wrapper.rs deleted file mode 100644 index 0540846a..00000000 --- a/kernel/src/arch/x86_64/kvm/vmx/vmx_asm_wrapper.rs +++ /dev/null @@ -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 { - 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), - } -} diff --git a/kernel/src/arch/x86_64/mm/mod.rs b/kernel/src/arch/x86_64/mm/mod.rs index 6415731f..94c13059 100644 --- a/kernel/src/arch/x86_64/mm/mod.rs +++ b/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; @@ -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); } } } diff --git a/kernel/src/arch/x86_64/mod.rs b/kernel/src/arch/x86_64/mod.rs index d825e7cc..73e1a10e 100644 --- a/kernel/src/arch/x86_64/mod.rs +++ b/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; diff --git a/kernel/src/arch/x86_64/vm/mmu/kvm_mmu.rs b/kernel/src/arch/x86_64/vm/mmu/kvm_mmu.rs index 7f5fa770..e71fea32 100644 --- a/kernel/src/arch/x86_64/vm/mmu/kvm_mmu.rs +++ b/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 { diff --git a/kernel/src/arch/x86_64/vm/mmu/mmu_internal.rs b/kernel/src/arch/x86_64/vm/mmu/mmu_internal.rs index 876b4c64..82706e33 100644 --- a/kernel/src/arch/x86_64/vm/mmu/mmu_internal.rs +++ b/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, }, }; diff --git a/kernel/src/arch/x86_64/vm/vmx/ept/mod.rs b/kernel/src/arch/x86_64/vm/vmx/ept/mod.rs index bf3cda4e..21f38bf3 100644 --- a/kernel/src/arch/x86_64/vm/vmx/ept/mod.rs +++ b/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, }; diff --git a/kernel/src/driver/tty/tty_ldisc/ntty.rs b/kernel/src/driver/tty/tty_ldisc/ntty.rs index 535e18d3..363fe579 100644 --- a/kernel/src/driver/tty/tty_ldisc/ntty.rs +++ b/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, 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(), diff --git a/kernel/src/mm/allocator/kernel_allocator.rs b/kernel/src/mm/allocator/kernel_allocator.rs index 9d71d907..b09a944f 100644 --- a/kernel/src/mm/allocator/kernel_allocator.rs +++ b/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) { diff --git a/kernel/src/mm/allocator/slab.rs b/kernel/src/mm/allocator/slab.rs index e564c325..4ac38a31 100644 --- a/kernel/src/mm/allocator/slab.rs +++ b/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() diff --git a/kernel/src/virt/mod.rs b/kernel/src/virt/mod.rs index 0f2205dd..e44013b9 100644 --- a/kernel/src/virt/mod.rs +++ b/kernel/src/virt/mod.rs @@ -1,2 +1 @@ -pub mod kvm; pub mod vm; diff --git a/kernel/src/virt/vm/kvm_host/mem.rs b/kernel/src/virt/vm/kvm_host/mem.rs index 304d8c4b..4ac244cb 100644 --- a/kernel/src/virt/vm/kvm_host/mem.rs +++ b/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}; diff --git a/kernel/src/virt/vm/kvm_host/mod.rs b/kernel/src/virt/vm/kvm_host/mod.rs index 0493f7c9..d7c0d747 100644 --- a/kernel/src/virt/vm/kvm_host/mod.rs +++ b/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(), 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