Re: [Xen-devel] [PATCH] xen/x86: actually allocate legacy interrupts on PV guests

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 27 Apr 2016, Boris Ostrovsky wrote:
> On 04/27/2016 09:40 AM, David Vrabel wrote:
> > On 27/04/16 14:38, Boris Ostrovsky wrote:
> > > int xen_nr_legacy_irqs()
> > > {
> > >      if (xen_hvm_domain())
> > >          return nr_legacy_irqs();
> > >      if (xen_initial_domain())
> > >          return NR_IRQS_LEGACY;
> > >      return 0;
> > > }
> > Yeah, if that does the right thing...
> 
> I think it will break xen_allocate_irq_gsi() again, unless we check for HVM
> domain explicitly. Which would be ugly.

I guess we all forgot about this patch, in the meantime the merge window
has opened.

Should we go ahead with:

http://marc.info/?l=linux-kernel&m=146115812124261&w=2

?
It might not be complete, but it is certainly an improvement.

Otherwise, please submit proper patches ASAP. I don't think we want to
delay this fix until 4.8.

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