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hypervisor: Add set_guest_debug for x86/KVM

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This commit adds `set_guest_debug` implementation for x86/KVM. This
function sets hardware breakpoints and single step to debug registers.

NOTE: The `set_guest_debug` implementation is based on the crosvm
implementation [1].

[1]
https://github.com/google/crosvm/blob/main/hypervisor/src/kvm/x86_64.rs

Signed-off-by: Akira Moroo <retrage01@gmail.com>
This commit is contained in:
Akira Moroo
2022-02-20 11:49:25 +09:00
committed by Rob Bradford
parent 603ca0e21b
commit 9f27954fbd
2 changed files with 48 additions and 1 deletions
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7
hypervisor/src/cpu.rs
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@@ -30,6 +30,8 @@ use crate::Xsave;
#[cfg(feature = "tdx")]
use crate::{TdxExitDetails, TdxExitStatus};
use thiserror::Error;
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
use vm_memory::GuestAddress;
#[derive(Error, Debug)]
///
@@ -397,6 +399,11 @@ pub trait Vcpu: Send + Sync {
/// potential soft lockups when being resumed.
///
fn notify_guest_clock_paused(&self) -> Result<()>;
#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
///
/// Sets debug registers to set hardware breakpoints and/or enable single step.
///
fn set_guest_debug(&self, addrs: &[GuestAddress], singlestep: bool) -> Result<()>;
///
/// Sets the type of CPU to be exposed to the guest and optional features.
///