From 8f402687ce5ac1edd4127b33d4c2548576186214 Mon Sep 17 00:00:00 2001
From: Jinank Jain <jinankjain@microsoft.com>
Date: Thu, 8 May 2025 06:31:38 +0000
Subject: [PATCH] hypervisor: mshv: Add missing implementation

Currently a lot of functions are stubbed out with unimplemented feature
tag. Add the missing implementation to successfully boot ARM64 guests on
MSHV.

Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
---
 hypervisor/src/mshv/mod.rs | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/hypervisor/src/mshv/mod.rs b/hypervisor/src/mshv/mod.rs
index 534e3761b..15caf44c2 100644
--- a/hypervisor/src/mshv/mod.rs
+++ b/hypervisor/src/mshv/mod.rs
@@ -1255,12 +1255,12 @@ impl cpu::Vcpu for MshvVcpu {
 
     #[cfg(target_arch = "aarch64")]
     fn init_pmu(&self, _irq: u32) -> cpu::Result<()> {
-        unimplemented!()
+        Ok(())
     }
 
     #[cfg(target_arch = "aarch64")]
     fn has_pmu_support(&self) -> bool {
-        unimplemented!()
+        true
     }
 
     #[cfg(target_arch = "aarch64")]
@@ -1308,17 +1308,17 @@ impl cpu::Vcpu for MshvVcpu {
 
     #[cfg(target_arch = "aarch64")]
     fn vcpu_init(&self, _kvi: &crate::VcpuInit) -> cpu::Result<()> {
-        unimplemented!()
+        Ok(())
     }
 
     #[cfg(target_arch = "aarch64")]
     fn vcpu_finalize(&self, _feature: i32) -> cpu::Result<()> {
-        unimplemented!()
+        Ok(())
     }
 
     #[cfg(target_arch = "aarch64")]
     fn vcpu_get_finalized_features(&self) -> i32 {
-        unimplemented!()
+        0
     }
 
     #[cfg(target_arch = "aarch64")]
@@ -1328,12 +1328,12 @@ impl cpu::Vcpu for MshvVcpu {
         _kvi: &mut crate::VcpuInit,
         _id: u8,
     ) -> cpu::Result<()> {
-        unimplemented!()
+        Ok(())
     }
 
     #[cfg(target_arch = "aarch64")]
     fn create_vcpu_init(&self) -> crate::VcpuInit {
-        unimplemented!();
+        MshvVcpuInit {}.into()
     }
 
     #[cfg(target_arch = "x86_64")]
@@ -2272,7 +2272,7 @@ impl vm::Vm for MshvVm {
 
     #[cfg(target_arch = "aarch64")]
     fn get_preferred_target(&self, _kvi: &mut crate::VcpuInit) -> vm::Result<()> {
-        unimplemented!()
+        Ok(())
     }
 
     /// Pause the VM