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CPUID VMExit

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This commit is contained in:
Masato Imai
2025-05-02 12:28:32 +00:00
parent 19244695d8
commit 54712e2fe8
2 changed files with 7 additions and 28 deletions
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3
src/vmm/linux.rs
View File

@ -1,7 +1,5 @@
use core::ptr::read_unaligned;
use crate::info;
pub const BZIMAGE: &'static [u8] = include_bytes!("../../bzImage");
pub const LAYOUT_BOOTPARAM: u64 = 0x0001_0000;
@ -80,7 +78,6 @@ impl BootParams {
pub fn from_bytes(bytes: &[u8]) -> Result<Self, &'static str> {
let hdr = SetupHeader::from_bytes(bytes)?;
info!("hdr: {:?}", hdr);
let mut bp = BootParams::new();
bp.hdr = hdr;
Ok(bp)

32
src/vmm/vcpu.rs
View File

@ -8,11 +8,9 @@ use x86::{
};
use x86_64::VirtAddr;
use core::sync::atomic::Ordering;
use crate::{
info,
memory::{self, BootInfoFrameAllocator},
memory::BootInfoFrameAllocator,
vmm::vmcs::{
DescriptorType, EntryControls, Granularity, PrimaryExitControls,
PrimaryProcessorBasedVmExecutionControls, SecondaryProcessorBasedVmExecutionControls,
@ -118,7 +116,6 @@ impl VCpu {
core::mem::size_of::<BootParams>(),
)
};
info!("BootParams: {:?}", bp);
self.load_image(bp_bytes, linux::LAYOUT_BOOTPARAM as usize);
let code_offset = bp.hdr.get_protected_code_offset();
@ -142,7 +139,6 @@ impl VCpu {
for x in 1..=1024 {
let mut gpa = 0;
let start = 100 * 1024 * (x - 1);
let end = 100 * 1024 * x;
let mut random_data = [0u8; 100 * 1024];
let mut rng = rand::rngs::SmallRng::from_seed([0u8; 16]);
@ -159,10 +155,6 @@ impl VCpu {
}
gpa += 1;
}
info!(
"Guest memory test passed for range {:#x} - {:#x}",
start, end
);
}
let start = 100 * 1024 * 0;
@ -190,16 +182,6 @@ impl VCpu {
self.test_guest_memory();
self.load_kernel(linux::BZIMAGE);
unsafe {
let phys_mem_offset = memory::PHYSICAL_MEMORY_OFFSET.load(Ordering::Relaxed);
let hpa = self
.ept
.get_phys_addr(linux::LAYOUT_BOOTPARAM as u64)
.unwrap()
+ phys_mem_offset;
let bp = &*(hpa as *const BootParams);
info!("{:?}", *bp);
}
let eptp = EPTP::new(&self.ept.root_table);
unsafe { vmwrite(vmcs::control::EPTP_FULL, eptp.0).unwrap() };
@ -380,12 +362,12 @@ impl VCpu {
vmwrite(vmcs::guest::IDTR_BASE, 0)?;
vmwrite(vmcs::guest::LDTR_BASE, 0xDEAD00)?;
vmwrite(vmcs::guest::CS_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::SS_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::DS_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::ES_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::FS_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::GS_LIMIT, 0xffff)?;
vmwrite(vmcs::guest::CS_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::SS_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::DS_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::ES_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::FS_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::GS_LIMIT, u32::MAX as u64)?;
vmwrite(vmcs::guest::TR_LIMIT, 0)?;
vmwrite(vmcs::guest::GDTR_LIMIT, 0)?;
vmwrite(vmcs::guest::IDTR_LIMIT, 0)?;