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Subject[34-longterm 236/260] KVM: x86: Fix SVM VMCB reset
Date
From: Zachary Amsden <zamsden@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: Paul Gortmaker <paul.gortmaker@windriver.com>
---
arch/x86/kvm/svm.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 49dabc1..508e136 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -632,7 +632,7 @@ static void init_vmcb(struct vcpu_svm *svm)

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);
--
1.7.3.3


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