Messages in this thread Patch in this message | | | From | KarimAllah Ahmed <> | Subject | [PATCH 3/3] X86/nVMX: Update the MSR_BITMAP field with the L02 MSR BITMAP | Date | Thu, 8 Feb 2018 23:53:30 +0100 |
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... otherwise we will just be running with the L1 MSR BITMAP!
It does not seem that we ever update the MSR_BITMAP when the nested guest is running. The only place where we update the MSR_BITMAP field in VMCS is for the L1 guest!
Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- arch/x86/kvm/vmx.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 91e3539..f40be10 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -10589,6 +10589,9 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, vmcs_writel(GUEST_GDTR_BASE, vmcs12->guest_gdtr_base); vmcs_writel(GUEST_IDTR_BASE, vmcs12->guest_idtr_base); + if (cpu_has_vmx_msr_bitmap()) + vmcs_write64(MSR_BITMAP, __pa(vmx->nested.vmcs02.msr_bitmap)); + if (from_vmentry && (vmcs12->vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS)) { kvm_set_dr(vcpu, 7, vmcs12->guest_dr7); -- 2.7.4
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