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hypervisor: mshv: handle APIC EOI message

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2023-08-11 22:24:38 +00:00 committed by Liu Wei
parent d3fc12b160
commit dbe67fca7f
1 changed files with 12 additions and 0 deletions
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12
hypervisor/src/mshv/mod.rs
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@ -562,6 +562,18 @@ impl cpu::Vcpu for MshvVcpu {
debug!("Exception Info {:?}", { info.exception_vector });
Ok(cpu::VmExit::Ignore)
}
hv_message_type_HVMSG_X64_APIC_EOI => {
let info = x.to_apic_eoi_info().unwrap();
// The kernel should dispatch the EOI to the correct thread.
// Check the VP index is the same as the one we have.
assert!(info.vp_index == self.vp_index as u32);
// The interrupt vector in info is u32, but x86 only supports 256 vectors.
// There is no good way to recover from this if the hypervisor messes around.
// Just unwrap.
Ok(cpu::VmExit::IoapicEoi(
info.interrupt_vector.try_into().unwrap(),
))
}
exit => Err(cpu::HypervisorCpuError::RunVcpu(anyhow!(
"Unhandled VCPU exit {:?}",
exit