From 2e5b0bd9cc6172edef502dfae28ae790f74a882e Mon Sep 17 00:00:00 2001 From: Jim Mattson Date: Thu, 4 May 2017 11:51:58 -0700 Subject: [PATCH] kvm: nVMX: Don't validate disabled secondary controls According to the SDM, if the "activate secondary controls" primary processor-based VM-execution control is 0, no checks are performed on the secondary processor-based VM-execution controls. Signed-off-by: Jim Mattson Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 75e6cc945be0..e7d929103f4a 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -10240,9 +10240,10 @@ static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) if (!vmx_control_verify(vmcs12->cpu_based_vm_exec_control, vmx->nested.nested_vmx_procbased_ctls_low, vmx->nested.nested_vmx_procbased_ctls_high) || - !vmx_control_verify(vmcs12->secondary_vm_exec_control, - vmx->nested.nested_vmx_secondary_ctls_low, - vmx->nested.nested_vmx_secondary_ctls_high) || + (nested_cpu_has(vmcs12, CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) && + !vmx_control_verify(vmcs12->secondary_vm_exec_control, + vmx->nested.nested_vmx_secondary_ctls_low, + vmx->nested.nested_vmx_secondary_ctls_high)) || !vmx_control_verify(vmcs12->pin_based_vm_exec_control, vmx->nested.nested_vmx_pinbased_ctls_low, vmx->nested.nested_vmx_pinbased_ctls_high) || -- GitLab