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hypervisor: Add GICv2M support for MSHV ARM64 guest

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MSHV does not emulate a GICv3-ITS for guests to support MSI interrupts,
instead it exposes a GICv2m device. Currently adding a skeleton code
which would be modified later on with complete implementation.

With this we can start compiling cloud-hypervisor for MSHV on ARM64.
This will make sure that we don't regress in future in terms of basic
compilation test.

Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This commit is contained in:
Jinank Jain
2025-04-01 13:02:45 +00:00
parent bcc314eb8b
commit 2798286278
4 changed files with 134 additions and 0 deletions
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6
hypervisor/src/arch/aarch64/gic.rs
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@@ -43,6 +43,8 @@ pub struct VgicConfig {
pub enum GicState {
#[cfg(feature = "kvm")]
Kvm(crate::kvm::aarch64::gic::Gicv3ItsState),
#[cfg(feature = "mshv")]
MshvGicV2M(crate::mshv::aarch64::gic::MshvGicV2MState),
}
impl<'de> Deserialize<'de> for GicState {
@@ -56,6 +58,8 @@ impl<'de> Deserialize<'de> for GicState {
pub enum GicStateDefaultDeserialize {
#[cfg(feature = "kvm")]
Kvm(crate::kvm::aarch64::gic::Gicv3ItsState),
#[cfg(feature = "mshv")]
MshvGicV2M(crate::mshv::aarch64::gic::MshvGicV2MState),
}
const {
@@ -78,6 +82,8 @@ impl<'de> Deserialize<'de> for GicState {
return match gic_state_de {
#[cfg(feature = "kvm")]
GicStateDefaultDeserialize::Kvm(state) => Ok(GicState::Kvm(state)),
#[cfg(feature = "mshv")]
GicStateDefaultDeserialize::MshvGicV2M(state) => Ok(GicState::MshvGicV2M(state)),
};
}
Err(SerdeError::custom("Failed to deserialize GicState"))