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hypervisor: mshv: Add Microsoft Hypervisor specific data to Mshv{Vm,Vcpu}

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Adding hv_state (hyperv state) to Vm and Vcpu struct for mshv.
This state is needed to keep some kernel data(for now hypercall page)
in the vmm.

Co-Developed-by: Praveen Paladugu <prapal@microsoft.com>
Signed-off-by: Praveen Paladugu <prapal@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam 2020-12-03 22:57:54 -08:00 committed by Samuel Ortiz
parent 23c46b162e
commit 3a93487b82
1 changed files with 17 additions and 2 deletions
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19
hypervisor/src/mshv/mod.rs
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@ -108,7 +108,11 @@ impl hypervisor::Hypervisor for MshvHypervisor {
}
let vm_fd = Arc::new(fd);
Ok(Arc::new(MshvVm { fd: vm_fd, msrs }))
Ok(Arc::new(MshvVm {
fd: vm_fd,
msrs,
hv_state: hv_state_init(),
}))
}
///
/// Get the supported CpuID
@ -133,6 +137,7 @@ pub struct MshvVcpu {
vp_index: u8,
cpuid: CpuId,
msrs: MsrEntries,
hv_state: Arc<RwLock<HvState>>, // Mshv State
}
/// Implementation of Vcpu trait for Microsoft Hypervisor
@ -327,11 +332,19 @@ impl cpu::Vcpu for MshvVcpu {
unimplemented!();
}
}
/// Wrapper over Mshv VM ioctls.
pub struct MshvVm {
fd: Arc<VmFd>,
msrs: MsrEntries,
// Hypervisor State
hv_state: Arc<RwLock<HvState>>,
}
fn hv_state_init() -> Arc<RwLock<HvState>> {
Arc::new(RwLock::new(HvState { hypercall_page: 0 }))
}
///
/// Implementation of Vm trait for Mshv
/// Example:
@ -386,6 +399,7 @@ impl vm::Vm for MshvVm {
vp_index: id,
cpuid: CpuId::new(1 as usize),
msrs: self.msrs.clone(),
hv_state: self.hv_state.clone(),
};
Ok(Arc::new(vcpu))
}
@ -449,12 +463,13 @@ impl vm::Vm for MshvVm {
/// Get the Vm state. Return VM specific data
///
fn state(&self) -> vm::Result<VmState> {
unimplemented!();
Ok(*self.hv_state.read().unwrap())
}
///
/// Set the VM state
///
fn set_state(&self, state: VmState) -> vm::Result<()> {
self.hv_state.write().unwrap().hypercall_page = state.hypercall_page;
Ok(())
}
///