From: Avi Kivity <avi@redhat.com>
To: stable@vger.kernel.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: [PATCH 08/11] KVM: nVMX: Fix erroneous exception bitmap check
Date: Wed, 9 May 2012 16:10:44 +0300 [thread overview]
Message-ID: <1336569047-23576-9-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1336569047-23576-1-git-send-email-avi@redhat.com>
From: Nadav Har'El <nyh@math.technion.ac.il>
The code which checks whether to inject a pagefault to L1 or L2 (in
nested VMX) was wrong, incorrect in how it checked the PF_VECTOR bit.
Thanks to Dan Carpenter for spotting this.
Signed-off-by: Nadav Har'El <nyh@il.ibm.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit 9587190107d0c0cbaccbf7bf6b0245d29095a9ae)
---
arch/x86/kvm/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fafb325..5d1b0c7 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1678,7 +1678,7 @@ static int nested_pf_handled(struct kvm_vcpu *vcpu)
struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
/* TODO: also check PFEC_MATCH/MASK, not just EB.PF. */
- if (!(vmcs12->exception_bitmap & PF_VECTOR))
+ if (!(vmcs12->exception_bitmap & (1u << PF_VECTOR)))
return 0;
nested_vmx_vmexit(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 ` Avi Kivity [this message]
2012-05-09 13:10 ` [PATCH 09/11] KVM: VMX: vmx_set_cr0 expects kvm->srcu locked Avi Kivity
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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