From abe6655dd699069b53bcccbc65b2717f60203b12 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 10 Feb 2009 20:59:45 -0200 Subject: [PATCH] KVM: x86: disable kvmclock on non constant TSC hosts This is better. Currently, this code path is posing us big troubles, and we won't have a decent patch in time. So, temporarily disable it. Signed-off-by: Glauber Costa Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fc3e329f6ade..758b7a155ae9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -967,7 +967,6 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_MMU_SHADOW_CACHE_CONTROL: case KVM_CAP_SET_TSS_ADDR: case KVM_CAP_EXT_CPUID: - case KVM_CAP_CLOCKSOURCE: case KVM_CAP_PIT: case KVM_CAP_NOP_IO_DELAY: case KVM_CAP_MP_STATE: @@ -992,6 +991,9 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_IOMMU: r = iommu_found(); break; + case KVM_CAP_CLOCKSOURCE: + r = boot_cpu_has(X86_FEATURE_CONSTANT_TSC); + break; default: r = 0; break; -- 2.39.5