Re: [Xen-devel] PVH dom0 creation fails - the system freezes

[<bercarug@xxxxxxxxxx>]

On 08/08/2018 01:11 PM, Roger Pau Monné wrote:
> On Wed, Aug 08, 2018 at 11:44:28AM +0200, Roger Pau Monné wrote:
> > I just realized that I've dropped a chunk from my series while
> > rebasing, could you please try again with the following diff applied
> > on top of my series?
> >
> > diff --git a/xen/drivers/passthrough/x86/iommu.c 
> > b/xen/drivers/passthrough/x86/iommu.c
> > index 6aec43ed1a..6271d8b671 100644
> > --- a/xen/drivers/passthrough/x86/iommu.c
> > +++ b/xen/drivers/passthrough/x86/iommu.c
> > @@ -209,7 +209,13 @@ void __hwdom_init arch_iommu_hwdom_init(struct domain *d)
> >           if ( !hwdom_iommu_map(d, pfn, max_pfn) )
> >               continue;
> >   
> > -        rc = iommu_map_page(d, pfn, pfn, IOMMUF_readable|IOMMUF_writable);
> > +        if ( iommu_use_hap_pt(d) )
> > +        {
> > +            ASSERT(is_hvm_domain(d));
> > +            rc = set_identity_p2m_entry(d, pfn, p2m_access_rw, 0);
> > +        }
> > +        else
> > +            rc = iommu_map_page(d, pfn, pfn, IOMMUF_readable|IOMMUF_writable);
> >           if ( rc )
> >               printk(XENLOG_WARNING " d%d: IOMMU mapping failed: %d\n",
> >                      d->domain_id, rc);
> I've pushed a new version that has this chunk, so it might be easier
> for you to just fetch and test:
>
> git://xenbits.xen.org/people/royger/xen.git iommu_inclusive_v4
>
> Thanks, Roger.
I already recompiled Xen using this patch, and the USB devices are 
functional again.

Thanks,

Gabriel




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