If the host side supports APERF&MPERF feature, the guest side may get mismatched freq. KVM uses x86_get_freq to get the same freq for guest side. Signed-off-by: zhenwei pi <pizhenwei@xxxxxxxxxxxxx> --- arch/x86/kvm/x86.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5a403d92833f..0c2a2188700f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8305,10 +8305,8 @@ static void tsc_khz_changed(void *data) if (data) khz = freq->new; - else if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) - khz = cpufreq_quick_get(raw_smp_processor_id()); if (!khz) - khz = tsc_khz; + khz = x86_get_freq(raw_smp_processor_id()); __this_cpu_write(cpu_tsc_khz, khz); } -- 2.25.1
