Commit 7a4f5ad0 authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Avi Kivity
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KVM: VMX: vmx_set_cr0 expects kvm->srcu locked 



vmx_set_cr0 is called from vcpu run context, therefore it expects
kvm->srcu to be held (for setting up the real-mode TSS).

Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent fea52953

arch/x86/kvm/vmx.c

+2 −0
Original line number Diff line number Diff line
@@ -3906,7 +3906,9 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu) 
		vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);



	vmx->vcpu.arch.cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;

	vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);

	vmx_set_cr0(&vmx->vcpu, kvm_read_cr0(vcpu)); /* enter rmode */

	srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);

	vmx_set_cr4(&vmx->vcpu, 0);

	vmx_set_efer(&vmx->vcpu, 0);

	vmx_fpu_activate(&vmx->vcpu);