[PATCH 2/2] KVM: SVM: Check for asid != 0 on nested vmrun
in [Kernel]
|
Prev: [PATCH 0/2] Add some checks before emulating vmrun
Next: [PATCH -next] swiotlb: make io_tlb_overflow static
From: Joerg Roedel on 2 Aug 2010 10:50 This patch lets a nested vmrun fail if the L1 hypervisor left the asid zero. This fixes the asid_zero unit test. Signed-off-by: Joerg Roedel <joerg.roedel(a)amd.com> --- arch/x86/kvm/svm.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 083fa88..7a2feb9 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2020,6 +2020,9 @@ static bool nested_vmcb_checks(struct vmcb *vmcb) if ((vmcb->control.intercept & (1ULL << INTERCEPT_VMRUN)) == 0) return false; + if (vmcb->control.asid == 0) + return false; + return true; } -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |