system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-04 18:33:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

KVM: SVM: svm_set_vintr don't warn if AVIC is active but is about to be deactivated

Browse source 
It is possible for AVIC inhibit and AVIC active state to be mismatched.
Currently we disable AVIC right away on vCPU which started the AVIC inhibit
request thus this warning doesn't trigger but at least in theory,
if svm_set_vintr is called at the same time on multiple vCPUs,
the warning can happen.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210713142023.106183-2-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2021-07-13 17:20:16 +03:00 committed by Paolo Bonzini
parent bb000f640e
commit f1577ab214
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
arch/x86/kvm/svm/svm.c
View file

@ -1568,8 +1568,11 @@ static void svm_set_vintr(struct vcpu_svm *svm)
{
struct vmcb_control_area *control;
/* The following fields are ignored when AVIC is enabled */
WARN_ON(kvm_vcpu_apicv_active(&svm->vcpu));
/*
* The following fields are ignored when AVIC is enabled
*/
WARN_ON(kvm_apicv_activated(svm->vcpu.kvm));
svm_set_intercept(svm, INTERCEPT_VINTR);
/*