> From: Roger Pau Monne
> Sent: Wednesday, January 8, 2020 8:32 PM
>
> Current implementation of nested VMX has a half baked handling of MSR
> bitmaps for the L1 VMM: it maps the L1 VMM provided MSR bitmap, but
> doesn't actually load it into the nested vmcs, and thus the nested
> guest vmcs ends
On Wed, Jan 08, 2020 at 01:55:42PM +0100, Jan Beulich wrote:
> On 08.01.2020 13:31, Roger Pau Monne wrote:
> > --- a/xen/arch/x86/hvm/vmx/vvmx.c
> > +++ b/xen/arch/x86/hvm/vmx/vvmx.c
> > @@ -128,6 +128,16 @@ int nvmx_vcpu_initialise(struct vcpu *v)
> > unmap_domain_page(vw);
> > }
> >
On 08.01.2020 13:31, Roger Pau Monne wrote:
> --- a/xen/arch/x86/hvm/vmx/vvmx.c
> +++ b/xen/arch/x86/hvm/vmx/vvmx.c
> @@ -128,6 +128,16 @@ int nvmx_vcpu_initialise(struct vcpu *v)
> unmap_domain_page(vw);
> }
>
> +if ( cpu_has_vmx_msr_bitmap )
> +{
> +nvmx->msr_merge
