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KVM: SVM: Make sure rip is synced to vmcb before nested vmexit 

This patch fixes a bug where a nested guest always went over
the same instruction because the rip was not advanced on a
nested vmexit.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
hifive-unleashed-5.1
Joerg Roedel 2010-04-22 12:33:08 +02:00 committed by Avi Kivity
parent 924584ccb0
commit 2041a06a50
1 changed files with 4 additions and 4 deletions
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8
arch/x86/kvm/svm.c
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@ -2960,6 +2960,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
u16 gs_selector;
u16 ldt_selector;
svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX];
svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP];
svm->vmcb->save.rip = vcpu->arch.regs[VCPU_REGS_RIP];
/*
* A vmexit emulation is required before the vcpu can be executed
* again.
@ -2967,10 +2971,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
if (unlikely(svm->nested.exit_required))
return;
svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX];
svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP];
svm->vmcb->save.rip = vcpu->arch.regs[VCPU_REGS_RIP];
pre_svm_run(svm);
sync_lapic_to_cr8(vcpu);