Re: [PATCH 06/10] KVM: SVM: tweak warning about enabled AVIC on nested entry

From: Paolo Bonzini
Date: Wed Jun 23 2021 - 17:53:02 EST


On 23/06/21 13:29, Maxim Levitsky wrote:
It is possible that AVIC was requested to be disabled but
not yet disabled, e.g if the nested entry is done right
after svm_vcpu_after_set_cpuid.

Signed-off-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
---
arch/x86/kvm/svm/nested.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index dca20f949b63..253847f7d9aa 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -505,7 +505,7 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm)
* Also covers avic_vapic_bar, avic_backing_page, avic_logical_id,
* avic_physical_id.
*/
- WARN_ON(svm->vmcb01.ptr->control.int_ctl & AVIC_ENABLE_MASK);
+ WARN_ON(kvm_apicv_activated(svm->vcpu.kvm));
/* Copied from vmcb01. msrpm_base can be overwritten later. */
svm->vmcb->control.nested_ctl = svm->vmcb01.ptr->control.nested_ctl;


Queued, thanks.

Paolo