| Date | Fri, 22 Oct 2010 11:51:51 -0700 | From | Greg KH <> | Subject | [077/103] KVM: x86: Fix SVM VMCB reset |
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2.6.35-stable review patch. If anyone has any objections, please let us know.
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From: Marcelo Tosatti <mtosatti@redhat.com>
commit 58877679fd393d3ef71aa383031ac7817561463d upstream.
On reset, VMCB TSC should be set to zero. Instead, code was setting tsc_offset to zero, which passes through the underlying TSC.
Signed-off-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/x86/kvm/svm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -766,7 +766,7 @@ static void init_vmcb(struct vcpu_svm *s control->iopm_base_pa = iopm_base; control->msrpm_base_pa = __pa(svm->msrpm); - control->tsc_offset = 0; + control->tsc_offset = 0-native_read_tsc(); control->int_ctl = V_INTR_MASKING_MASK; init_seg(&save->es);
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