From: Avi Kivity <avi@redhat.com>
To: stable@vger.kernel.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: [PATCH 09/11] KVM: VMX: vmx_set_cr0 expects kvm->srcu locked
Date: Wed, 9 May 2012 16:10:45 +0300 [thread overview]
Message-ID: <1336569047-23576-10-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1336569047-23576-1-git-send-email-avi@redhat.com>
From: Marcelo Tosatti <mtosatti@redhat.com>
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>
(cherry picked from commit 7a4f5ad051e02139a9f1c0f7f4b1acb88915852b)
---
arch/x86/kvm/vmx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 5d1b0c7..7f33e33 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3918,7 +3918,9 @@ 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);
--
1.7.10.1
next prev parent reply other threads:[~2012-05-09 13:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-09 13:10 [PATCH 00/11] KVM fixes for 3.3.5 Avi Kivity
2012-05-09 13:10 ` [PATCH 01/11] KVM: s390: do store status after handling STOP_ON_STOP bit Avi Kivity
2012-05-09 13:10 ` [PATCH 02/11] KVM: s390: Sanitize fpc registers for KVM_SET_FPU Avi Kivity
2012-05-09 13:10 ` [PATCH 03/11] KVM: Fix write protection race during dirty logging Avi Kivity
2012-05-09 13:10 ` [PATCH 04/11] KVM: mmu_notifier: Flush TLBs before releasing mmu_lock Avi Kivity
2012-05-09 13:10 ` [PATCH 05/11] KVM: x86 emulator: correctly mask pmc index bits in RDPMC instruction emulation Avi Kivity
2012-05-09 13:10 ` [PATCH 06/11] KVM: Ensure all vcpus are consistent with in-kernel irqchip settings Avi Kivity
2012-05-09 13:10 ` [PATCH 07/11] KVM: VMX: Fix delayed load of shared MSRs Avi Kivity
2012-05-09 13:10 ` [PATCH 08/11] KVM: nVMX: Fix erroneous exception bitmap check Avi Kivity
2012-05-09 13:10 ` Avi Kivity [this message]
2012-05-09 13:10 ` [PATCH 10/11] KVM: VMX: Fix kvm_set_shared_msr() called in preemptible context Avi Kivity
2012-05-09 13:10 ` [PATCH 11/11] KVM: lock slots_lock around device assignment Avi Kivity
2012-05-10 16:28 ` [PATCH 00/11] KVM fixes for 3.3.5 Greg KH
2012-05-12 0:35 ` Ben Hutchings
2012-05-13 9:23 ` Avi Kivity
2012-05-13 10:19 ` Ben Hutchings
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