Re: [Xen-devel] [PATCH] x86/PCI: Intercept Dom0 MMCFG from dom0s in HVM containers

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 12/16/2015 04:04 AM, Jan Beulich wrote:
> > --- a/xen/arch/x86/hvm/hvm.c
> > +++ b/xen/arch/x86/hvm/hvm.c
> > @@ -3116,6 +3116,21 @@ int hvm_hap_nested_page_fault(paddr_t gpa, unsigned long 
> > gla,
> >           goto out_put_gfn;
> >       }
> >   
> > +    if ( (p2mt == p2m_mmio_direct) && is_hardware_domain(currd) )
> The PV condition includes a PFEC_page_present check, and I think
> an equivalent should be added here too.
Hmm.. So how would I determine that? I can see how this is available in 
SVM (although it is not reflected in npfec) but in VMX I don't see 
direct indication of whether the page was present.
-boris

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel