mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-12-22 13:45:20 +00:00
hypervisor: mshv: Refactor x86 emulator into different module
This is a preparatory work to make space for ARM64 emulator. There is no functional change in this commit, just moving code from one file to another. Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This commit is contained in:
Jinank Jain
Liu Wei
parent
ead4f767ff
commit
b73d94f969
@ -3,18 +3,15 @@
|
||||
// Copyright © 2020, Microsoft Corporation
|
||||
//
|
||||
|
||||
use crate::arch::emulator::{PlatformEmulator, PlatformError};
|
||||
|
||||
use crate::arch::emulator::PlatformEmulator;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use crate::arch::x86::emulator::{CpuStateManager, Emulator, EmulatorCpuState};
|
||||
use crate::arch::x86::emulator::Emulator;
|
||||
use crate::cpu;
|
||||
use crate::cpu::Vcpu;
|
||||
use crate::hypervisor;
|
||||
use crate::mshv::emulator::MshvEmulatorContext;
|
||||
use crate::vec_with_array_field;
|
||||
use crate::vm::{self, InterruptSourceConfig, VmOps};
|
||||
use crate::HypervisorType;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use iced_x86::Register;
|
||||
use mshv_bindings::*;
|
||||
use mshv_ioctls::{set_registers_64, InterruptRequest, Mshv, NoDatamatch, VcpuFd, VmFd, VmType};
|
||||
use std::any::Any;
|
||||
@ -22,18 +19,15 @@ use std::collections::HashMap;
|
||||
use std::sync::{Arc, RwLock};
|
||||
use vfio_ioctls::VfioDeviceFd;
|
||||
use vm::DataMatch;
|
||||
|
||||
#[cfg(feature = "sev_snp")]
|
||||
mod snp_constants;
|
||||
// x86_64 dependencies
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
pub mod x86_64;
|
||||
#[cfg(feature = "sev_snp")]
|
||||
use snp_constants::*;
|
||||
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use crate::arch::x86::{CpuIdEntry, FpuState, MsrEntry};
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use crate::ClockData;
|
||||
|
||||
use crate::{
|
||||
CpuState, IoEventAddress, IrqRoutingEntry, MpState, UserMemoryRegion,
|
||||
USER_MEMORY_REGION_ADJUSTABLE, USER_MEMORY_REGION_EXECUTE, USER_MEMORY_REGION_READ,
|
||||
@ -41,18 +35,16 @@ use crate::{
|
||||
};
|
||||
#[cfg(feature = "sev_snp")]
|
||||
use igvm_defs::IGVM_VHS_SNP_ID_BLOCK;
|
||||
use vmm_sys_util::eventfd::EventFd;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
pub use x86_64::VcpuMshvState;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
pub use x86_64::*;
|
||||
|
||||
#[cfg(feature = "sev_snp")]
|
||||
use snp_constants::*;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use std::fs::File;
|
||||
use std::os::unix::io::AsRawFd;
|
||||
|
||||
use vmm_sys_util::eventfd::EventFd;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
use crate::arch::x86::{CpuIdEntry, FpuState, MsrEntry};
|
||||
pub use x86_64::*;
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
pub use x86_64::{emulator, VcpuMshvState};
|
||||
|
||||
const DIRTY_BITMAP_CLEAR_DIRTY: u64 = 0x4;
|
||||
const DIRTY_BITMAP_SET_DIRTY: u64 = 0x8;
|
||||
@ -1520,143 +1512,6 @@ impl MshvVcpu {
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
struct MshvEmulatorContext<'a> {
|
||||
vcpu: &'a MshvVcpu,
|
||||
map: (u64, u64), // Initial GVA to GPA mapping provided by the hypervisor
|
||||
}
|
||||
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
impl<'a> MshvEmulatorContext<'a> {
|
||||
// Do the actual gva -> gpa translation
|
||||
#[allow(non_upper_case_globals)]
|
||||
fn translate(&self, gva: u64, flags: u32) -> Result<u64, PlatformError> {
|
||||
if self.map.0 == gva {
|
||||
return Ok(self.map.1);
|
||||
}
|
||||
|
||||
let (gpa, result_code) = self
|
||||
.vcpu
|
||||
.translate_gva(gva, flags.into())
|
||||
.map_err(|e| PlatformError::TranslateVirtualAddress(anyhow!(e)))?;
|
||||
|
||||
match result_code {
|
||||
hv_translate_gva_result_code_HV_TRANSLATE_GVA_SUCCESS => Ok(gpa),
|
||||
_ => Err(PlatformError::TranslateVirtualAddress(anyhow!(result_code))),
|
||||
}
|
||||
}
|
||||
|
||||
fn read_memory_flags(
|
||||
&self,
|
||||
gva: u64,
|
||||
data: &mut [u8],
|
||||
flags: u32,
|
||||
) -> Result<(), PlatformError> {
|
||||
let gpa = self.translate(gva, flags)?;
|
||||
debug!(
|
||||
"mshv emulator: memory read {} bytes from [{:#x} -> {:#x}]",
|
||||
data.len(),
|
||||
gva,
|
||||
gpa
|
||||
);
|
||||
|
||||
if let Some(vm_ops) = &self.vcpu.vm_ops {
|
||||
if vm_ops.guest_mem_read(gpa, data).is_err() {
|
||||
vm_ops
|
||||
.mmio_read(gpa, data)
|
||||
.map_err(|e| PlatformError::MemoryReadFailure(e.into()))?;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
/// Platform emulation for Hyper-V
|
||||
impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
|
||||
type CpuState = EmulatorCpuState;
|
||||
|
||||
fn read_memory(&self, gva: u64, data: &mut [u8]) -> Result<(), PlatformError> {
|
||||
self.read_memory_flags(gva, data, HV_TRANSLATE_GVA_VALIDATE_READ)
|
||||
}
|
||||
|
||||
fn write_memory(&mut self, gva: u64, data: &[u8]) -> Result<(), PlatformError> {
|
||||
let gpa = self.translate(gva, HV_TRANSLATE_GVA_VALIDATE_WRITE)?;
|
||||
debug!(
|
||||
"mshv emulator: memory write {} bytes at [{:#x} -> {:#x}]",
|
||||
data.len(),
|
||||
gva,
|
||||
gpa
|
||||
);
|
||||
|
||||
if let Some(vm_ops) = &self.vcpu.vm_ops {
|
||||
if vm_ops.guest_mem_write(gpa, data).is_err() {
|
||||
vm_ops
|
||||
.mmio_write(gpa, data)
|
||||
.map_err(|e| PlatformError::MemoryWriteFailure(e.into()))?;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn cpu_state(&self, cpu_id: usize) -> Result<Self::CpuState, PlatformError> {
|
||||
if cpu_id != self.vcpu.vp_index as usize {
|
||||
return Err(PlatformError::GetCpuStateFailure(anyhow!(
|
||||
"CPU id mismatch {:?} {:?}",
|
||||
cpu_id,
|
||||
self.vcpu.vp_index
|
||||
)));
|
||||
}
|
||||
|
||||
let regs = self
|
||||
.vcpu
|
||||
.get_regs()
|
||||
.map_err(|e| PlatformError::GetCpuStateFailure(e.into()))?;
|
||||
let sregs = self
|
||||
.vcpu
|
||||
.get_sregs()
|
||||
.map_err(|e| PlatformError::GetCpuStateFailure(e.into()))?;
|
||||
|
||||
debug!("mshv emulator: Getting new CPU state");
|
||||
debug!("mshv emulator: {:#x?}", regs);
|
||||
|
||||
Ok(EmulatorCpuState { regs, sregs })
|
||||
}
|
||||
|
||||
fn set_cpu_state(&self, cpu_id: usize, state: Self::CpuState) -> Result<(), PlatformError> {
|
||||
if cpu_id != self.vcpu.vp_index as usize {
|
||||
return Err(PlatformError::SetCpuStateFailure(anyhow!(
|
||||
"CPU id mismatch {:?} {:?}",
|
||||
cpu_id,
|
||||
self.vcpu.vp_index
|
||||
)));
|
||||
}
|
||||
|
||||
debug!("mshv emulator: Setting new CPU state");
|
||||
debug!("mshv emulator: {:#x?}", state.regs);
|
||||
|
||||
self.vcpu
|
||||
.set_regs(&state.regs)
|
||||
.map_err(|e| PlatformError::SetCpuStateFailure(e.into()))?;
|
||||
self.vcpu
|
||||
.set_sregs(&state.sregs)
|
||||
.map_err(|e| PlatformError::SetCpuStateFailure(e.into()))
|
||||
}
|
||||
|
||||
fn fetch(&self, ip: u64, instruction_bytes: &mut [u8]) -> Result<(), PlatformError> {
|
||||
let rip =
|
||||
self.cpu_state(self.vcpu.vp_index as usize)?
|
||||
.linearize(Register::CS, ip, false)?;
|
||||
self.read_memory_flags(
|
||||
rip,
|
||||
instruction_bytes,
|
||||
HV_TRANSLATE_GVA_VALIDATE_READ | HV_TRANSLATE_GVA_VALIDATE_EXECUTE,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
/// Wrapper over Mshv VM ioctls.
|
||||
pub struct MshvVm {
|
||||
fd: Arc<VmFd>,
|
||||
|
||||
145
hypervisor/src/mshv/x86_64/emulator.rs
Normal file
145
hypervisor/src/mshv/x86_64/emulator.rs
Normal file
@ -0,0 +1,145 @@
|
||||
// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
|
||||
//
|
||||
// Copyright © 2024, Microsoft Corporation
|
||||
//
|
||||
|
||||
use crate::arch::emulator::{PlatformEmulator, PlatformError};
|
||||
use crate::arch::x86::emulator::{CpuStateManager, EmulatorCpuState};
|
||||
use crate::cpu::Vcpu;
|
||||
use crate::mshv::MshvVcpu;
|
||||
use iced_x86::Register;
|
||||
use mshv_bindings::*;
|
||||
|
||||
pub struct MshvEmulatorContext<'a> {
|
||||
pub vcpu: &'a MshvVcpu,
|
||||
pub map: (u64, u64), // Initial GVA to GPA mapping provided by the hypervisor
|
||||
}
|
||||
|
||||
impl<'a> MshvEmulatorContext<'a> {
|
||||
// Do the actual gva -> gpa translation
|
||||
#[allow(non_upper_case_globals)]
|
||||
fn translate(&self, gva: u64, flags: u32) -> Result<u64, PlatformError> {
|
||||
if self.map.0 == gva {
|
||||
return Ok(self.map.1);
|
||||
}
|
||||
|
||||
let (gpa, result_code) = self
|
||||
.vcpu
|
||||
.translate_gva(gva, flags.into())
|
||||
.map_err(|e| PlatformError::TranslateVirtualAddress(anyhow!(e)))?;
|
||||
|
||||
match result_code {
|
||||
hv_translate_gva_result_code_HV_TRANSLATE_GVA_SUCCESS => Ok(gpa),
|
||||
_ => Err(PlatformError::TranslateVirtualAddress(anyhow!(result_code))),
|
||||
}
|
||||
}
|
||||
|
||||
fn read_memory_flags(
|
||||
&self,
|
||||
gva: u64,
|
||||
data: &mut [u8],
|
||||
flags: u32,
|
||||
) -> Result<(), PlatformError> {
|
||||
let gpa = self.translate(gva, flags)?;
|
||||
debug!(
|
||||
"mshv emulator: memory read {} bytes from [{:#x} -> {:#x}]",
|
||||
data.len(),
|
||||
gva,
|
||||
gpa
|
||||
);
|
||||
|
||||
if let Some(vm_ops) = &self.vcpu.vm_ops {
|
||||
if vm_ops.guest_mem_read(gpa, data).is_err() {
|
||||
vm_ops
|
||||
.mmio_read(gpa, data)
|
||||
.map_err(|e| PlatformError::MemoryReadFailure(e.into()))?;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
/// Platform emulation for Hyper-V
|
||||
impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
|
||||
type CpuState = EmulatorCpuState;
|
||||
|
||||
fn read_memory(&self, gva: u64, data: &mut [u8]) -> Result<(), PlatformError> {
|
||||
self.read_memory_flags(gva, data, HV_TRANSLATE_GVA_VALIDATE_READ)
|
||||
}
|
||||
|
||||
fn write_memory(&mut self, gva: u64, data: &[u8]) -> Result<(), PlatformError> {
|
||||
let gpa = self.translate(gva, HV_TRANSLATE_GVA_VALIDATE_WRITE)?;
|
||||
debug!(
|
||||
"mshv emulator: memory write {} bytes at [{:#x} -> {:#x}]",
|
||||
data.len(),
|
||||
gva,
|
||||
gpa
|
||||
);
|
||||
|
||||
if let Some(vm_ops) = &self.vcpu.vm_ops {
|
||||
if vm_ops.guest_mem_write(gpa, data).is_err() {
|
||||
vm_ops
|
||||
.mmio_write(gpa, data)
|
||||
.map_err(|e| PlatformError::MemoryWriteFailure(e.into()))?;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn cpu_state(&self, cpu_id: usize) -> Result<Self::CpuState, PlatformError> {
|
||||
if cpu_id != self.vcpu.vp_index as usize {
|
||||
return Err(PlatformError::GetCpuStateFailure(anyhow!(
|
||||
"CPU id mismatch {:?} {:?}",
|
||||
cpu_id,
|
||||
self.vcpu.vp_index
|
||||
)));
|
||||
}
|
||||
|
||||
let regs = self
|
||||
.vcpu
|
||||
.get_regs()
|
||||
.map_err(|e| PlatformError::GetCpuStateFailure(e.into()))?;
|
||||
let sregs = self
|
||||
.vcpu
|
||||
.get_sregs()
|
||||
.map_err(|e| PlatformError::GetCpuStateFailure(e.into()))?;
|
||||
|
||||
debug!("mshv emulator: Getting new CPU state");
|
||||
debug!("mshv emulator: {:#x?}", regs);
|
||||
|
||||
Ok(EmulatorCpuState { regs, sregs })
|
||||
}
|
||||
|
||||
fn set_cpu_state(&self, cpu_id: usize, state: Self::CpuState) -> Result<(), PlatformError> {
|
||||
if cpu_id != self.vcpu.vp_index as usize {
|
||||
return Err(PlatformError::SetCpuStateFailure(anyhow!(
|
||||
"CPU id mismatch {:?} {:?}",
|
||||
cpu_id,
|
||||
self.vcpu.vp_index
|
||||
)));
|
||||
}
|
||||
|
||||
debug!("mshv emulator: Setting new CPU state");
|
||||
debug!("mshv emulator: {:#x?}", state.regs);
|
||||
|
||||
self.vcpu
|
||||
.set_regs(&state.regs)
|
||||
.map_err(|e| PlatformError::SetCpuStateFailure(e.into()))?;
|
||||
self.vcpu
|
||||
.set_sregs(&state.sregs)
|
||||
.map_err(|e| PlatformError::SetCpuStateFailure(e.into()))
|
||||
}
|
||||
|
||||
fn fetch(&self, ip: u64, instruction_bytes: &mut [u8]) -> Result<(), PlatformError> {
|
||||
let rip =
|
||||
self.cpu_state(self.vcpu.vp_index as usize)?
|
||||
.linearize(Register::CS, ip, false)?;
|
||||
self.read_memory_flags(
|
||||
rip,
|
||||
instruction_bytes,
|
||||
HV_TRANSLATE_GVA_VALIDATE_READ | HV_TRANSLATE_GVA_VALIDATE_EXECUTE,
|
||||
)
|
||||
}
|
||||
}
|
||||
@ -14,6 +14,8 @@ use crate::arch::x86::{
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::fmt;
|
||||
|
||||
pub mod emulator;
|
||||
|
||||
///
|
||||
/// Export generically-named wrappers of mshv_bindings for Unix-based platforms
|
||||
///
|
||||
|
||||
Loading…
Reference in New Issue
Block a user