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KVM: nSVM: Track the physical cpu of the vmcb vmrun through the vmcb

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This patch moves the physical cpu tracking from the vcpu
to the vmcb in svm_switch_vmcb. If either vmcb01 or vmcb02
change physical cpus from one vmrun to the next the vmcb's
previous cpu is preserved for comparison with the current
cpu and the vmcb is marked dirty if different. This prevents
the processor from using old cached data for a vmcb that may
have been updated on a prior run on a different processor.

It also moves the physical cpu check from svm_vcpu_load
to pre_svm_run as the check only needs to be done at run.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cathy Avery <cavery@redhat.com>
Message-Id: <20210112164313.4204-2-cavery@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Cathy Avery
2021-01-12 11:43:12 -05:00
committed by Paolo Bonzini
parent 4995a3685f
commit af18fa775d
2 changed files with 16 additions and 8 deletions
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arch/x86/kvm/svm/svm.h
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@@ -84,6 +84,7 @@ struct kvm_vcpu;
struct kvm_vmcb_info {
struct vmcb *ptr;
unsigned long pa;
int cpu;
};
struct svm_nested_state {