diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 7217f7532df9..b66af2966ec7 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -569,15 +569,11 @@ static int svm_check_processor_compat(void) static void __svm_write_tsc_multiplier(u64 multiplier) { - preempt_disable(); - if (multiplier == __this_cpu_read(current_tsc_ratio)) - goto out; + return; wrmsrl(MSR_AMD64_TSC_RATIO, multiplier); __this_cpu_write(current_tsc_ratio, multiplier); -out: - preempt_enable(); } static inline void kvm_cpu_svm_disable(void) @@ -1152,7 +1148,9 @@ static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset) void svm_write_tsc_multiplier(struct kvm_vcpu *vcpu, u64 multiplier) { + preempt_disable(); __svm_write_tsc_multiplier(multiplier); + preempt_enable(); } /* Evaluate instruction intercepts that depend on guest CPUID features. */ |