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KVM: Allow adjust_tsc_offset to be in host or guest cycles

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Redefine the API to take a parameter indicating whether an
adjustment is in host or guest cycles.

Signed-off-by: Zachary Amsden <zamsden@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti
2012-02-03 15:43:55 -02:00
committed by Avi Kivity
parent 6f526ec538
commit f1e2b26003
4 changed files with 19 additions and 4 deletions
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6
arch/x86/kvm/svm.c
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@@ -1016,10 +1016,14 @@ static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
}
static void svm_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment)
static void svm_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment, bool host)
{
struct vcpu_svm *svm = to_svm(vcpu);
WARN_ON(adjustment < 0);
if (host)
adjustment = svm_scale_tsc(vcpu, adjustment);
svm->vmcb->control.tsc_offset += adjustment;
if (is_guest_mode(vcpu))
svm->nested.hsave->control.tsc_offset += adjustment;