This is a note to let you know that I've just added the patch titled
KVM: nVMX: Fix erroneous exception bitmap check
to the 3.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-nvmx-fix-erroneous-exception-bitmap-check.patch
and it can be found in the queue-3.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Wed May 9 06:14:29 2012
From: Avi Kivity <[email protected]>
Date: Wed, 9 May 2012 16:10:44 +0300
Subject: KVM: nVMX: Fix erroneous exception bitmap check
To: [email protected]
Cc: Marcelo Tosatti <[email protected]>, [email protected]
Message-ID: <[email protected]>
From: Nadav Har'El <[email protected]>
(cherry picked from commit 9587190107d0c0cbaccbf7bf6b0245d29095a9ae)
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 <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/x86/kvm/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1678,7 +1678,7 @@ static int nested_pf_handled(struct kvm_
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);
Patches currently in stable-queue which might be from [email protected] are
queue-3.3/kvm-s390-do-store-status-after-handling-stop_on_stop-bit.patch
queue-3.3/kvm-nvmx-fix-erroneous-exception-bitmap-check.patch
queue-3.3/kvm-s390-sanitize-fpc-registers-for-kvm_set_fpu.patch
queue-3.3/kvm-x86-emulator-correctly-mask-pmc-index-bits-in-rdpmc-instruction-emulation.patch
queue-3.3/kvm-mmu_notifier-flush-tlbs-before-releasing-mmu_lock.patch
queue-3.3/kvm-vmx-fix-kvm_set_shared_msr-called-in-preemptible-context.patch
queue-3.3/kvm-vmx-vmx_set_cr0-expects-kvm-srcu-locked.patch
queue-3.3/kvm-ensure-all-vcpus-are-consistent-with-in-kernel-irqchip-settings.patch
queue-3.3/kvm-fix-write-protection-race-during-dirty-logging.patch
queue-3.3/kvm-lock-slots_lock-around-device-assignment.patch
queue-3.3/kvm-vmx-fix-delayed-load-of-shared-msrs.patch
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