From: Joerg Roedel Date: Mon, 2 Aug 2010 14:46:45 +0000 (+0200) Subject: KVM: SVM: Check for asid != 0 on nested vmrun X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dbe7758482a870f30a86bdeefebf4fc260afef11;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git KVM: SVM: Check for asid != 0 on nested vmrun 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 Signed-off-by: Avi Kivity --- diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a0e5c7e26104..af5b9ea51965 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2019,6 +2019,9 @@ 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; }