Commit 24263634 authored by Jim Mattson's avatar Jim Mattson Committed by Paolo Bonzini
Browse files

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



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: default avatarJim Mattson <jmattson@google.com>
Reviewed-by: default avatarOliver Upton <oupton@google.com>
Reviewed-by: default avatarPeter Shier <pshier@google.com>
Message-Id: <20200603235623.245638-3-jmattson@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 73cd6e5f

arch/x86/kvm/svm/sev.c

+0 −1
Original line number Diff line number Diff line
@@ -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);

arch/x86/kvm/svm/svm.c

+1 −0
Original line number Diff line number Diff line
@@ -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