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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-02-10 20:59:45 -0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-02-15 02:47:36 +0200 |
| commit | abe6655dd699069b53bcccbc65b2717f60203b12 (patch) | |
| tree | e8c269afce31c881f2f4dfe418c19edd82b7a0d5 /arch | |
| parent | d2a8284e8fca9e2a938bee6cd074064d23864886 (diff) | |
| download | linux-stable-abe6655dd699069b53bcccbc65b2717f60203b12.tar.gz linux-stable-abe6655dd699069b53bcccbc65b2717f60203b12.tar.bz2 linux-stable-abe6655dd699069b53bcccbc65b2717f60203b12.zip | |
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 <glommer@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 3 insertions, 1 deletions
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; |