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| author | Nadav Har'El <nyh@math.technion.ac.il> | 2012-03-06 15:39:22 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-08 13:14:23 +0100 |
| commit | 9587190107d0c0cbaccbf7bf6b0245d29095a9ae (patch) | |
| tree | 22fe97d0bc4df730d7775d9590faccb13d86193b /arch/x86/kvm | |
| parent | KVM: Ignore the writes to MSR_K7_HWCR(3) (diff) | |
| download | linux-9587190107d0c0cbaccbf7bf6b0245d29095a9ae.tar.xz linux-9587190107d0c0cbaccbf7bf6b0245d29095a9ae.zip | |
KVM: nVMX: Fix erroneous exception bitmap check
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>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 4a722a0b8e13..2c22fc788da2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1664,7 +1664,7 @@ 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); |