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kvm: svm: Always set svm->last_cpu on VMRUN

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Previously, this field was only set when using SEV. Set it for all
vCPU configurations, so that it can be communicated to userspace for
diagnosing potential hardware errors.

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20200603235623.245638-3-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson
2020-06-03 16:56:19 -07:00
committed by Paolo Bonzini
parent 73cd6e5f7f
commit 242636343c
2 changed files with 1 additions and 1 deletions
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1
arch/x86/kvm/svm/sev.c
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@@ -1189,7 +1189,6 @@ void pre_sev_run(struct vcpu_svm *svm, int cpu)
svm->last_cpu == cpu)
return;
svm->last_cpu = cpu;
sd->sev_vmcbs[asid] = svm->vmcb;
svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ASID;
mark_dirty(svm->vmcb, VMCB_ASID);

1
arch/x86/kvm/svm/svm.c
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@@ -3396,6 +3396,7 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
*/
x86_spec_ctrl_set_guest(svm->spec_ctrl, svm->virt_spec_ctrl);
svm->last_cpu = vcpu->cpu;
__svm_vcpu_run(svm->vmcb_pa, (unsigned long *)&svm->vcpu.arch.regs);
#ifdef CONFIG_X86_64