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authorMarcelo Tosatti <mtosatti@redhat.com>2012-03-27 22:47:26 (GMT)
committerAvi Kivity <avi@redhat.com>2012-04-05 16:04:09 (GMT)
commit7a4f5ad051e02139a9f1c0f7f4b1acb88915852b (patch)
treefe3a336cd04af38e828237a555ef39d1799fe86c /arch/x86/kvm/vmx.c
parentfea5295324ce7ce6ccfe0909cc6740a2d34aa5a3 (diff)
downloadlinux-7a4f5ad051e02139a9f1c0f7f4b1acb88915852b.tar.xz
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: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
-rw-r--r--arch/x86/kvm/vmx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 280751c..ad85adf 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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);