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| author | Zhao Liu <zhao1.liu@intel.com> | 2024-11-06 11:07:21 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2025-01-10 23:34:44 +0100 |
| commit | 86e032bb7b5ac5a319cef914aa779825fe39a2e2 (patch) | |
| tree | 2a04a7540d713118ddc16af510e6fbbc4462a893 | |
| parent | f5bec7652ddff7e10a0c14aa123352275c720e48 (diff) | |
| download | qemu-86e032bb7b5ac5a319cef914aa779825fe39a2e2.zip qemu-86e032bb7b5ac5a319cef914aa779825fe39a2e2.tar.gz qemu-86e032bb7b5ac5a319cef914aa779825fe39a2e2.tar.bz2 | |
target/i386/kvm: Only save/load kvmclock MSRs when kvmclock enabled
MSR_KVM_SYSTEM_TIME and MSR_KVM_WALL_CLOCK are attached with the (old)
kvmclock feature (KVM_FEATURE_CLOCKSOURCE).
So, just save/load them only when kvmclock (KVM_FEATURE_CLOCKSOURCE) is
enabled.
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Zide Chen <zide.chen@intel.com>
Link: https://lore.kernel.org/r/20241106030728.553238-5-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | target/i386/kvm/kvm.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 7870820..7536a3c 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -3973,8 +3973,10 @@ static int kvm_put_msrs(X86CPU *cpu, int level) */ if (level >= KVM_PUT_RESET_STATE) { kvm_msr_entry_add(cpu, MSR_IA32_TSC, env->tsc); - kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr); - kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr); + if (env->features[FEAT_KVM] & (CPUID_KVM_CLOCK | CPUID_KVM_CLOCK2)) { + kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr); + kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr); + } if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int_msr); } @@ -4451,8 +4453,10 @@ static int kvm_get_msrs(X86CPU *cpu) } } #endif - kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0); - kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0); + if (env->features[FEAT_KVM] & (CPUID_KVM_CLOCK | CPUID_KVM_CLOCK2)) { + kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0); + kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0); + } if (env->features[FEAT_KVM] & CPUID_KVM_ASYNCPF_INT) { kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0); } |