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Date: Thu, 8 Nov 2007 12:35:28 +0200 From: Avi Kivity <avi@...ranet.com> To: kvm-devel@...ts.sourceforge.net Cc: linux-kernel@...r.kernel.org, Avi Kivity <avi@...ranet.com> Subject: [PATCH 3/5] KVM: SVM: Defer nmi processing until switch to host state is complete If we stgi() too soon, nmis can reach the processor even though interrupts are disabled, catching it in a half-switched state. Delay the stgi() until we're done switching. Signed-off-by: Avi Kivity <avi@...ranet.com> --- drivers/kvm/svm.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 3910358..7376805 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -1585,10 +1585,6 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) #endif : "cc", "memory" ); - local_irq_disable(); - - stgi(); - if ((svm->vmcb->save.dr7 & 0xff)) load_db_regs(svm->host_db_regs); @@ -1605,6 +1601,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) reload_tss(vcpu); + local_irq_disable(); + + stgi(); + svm->next_rip = 0; } -- 1.5.3 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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