Re: [Xen-devel] passthrough: improve interrupt injection locking

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Fri, 2015-10-23 at 13:38 +0100, David Vrabel wrote:
> On 23/10/15 13:37, Ian Campbell wrote:
> > On Fri, 2015-10-23 at 12:05 +0100, David Vrabel wrote:
> > > When injecting an interrupt for a passthrough device into a guest,
> > > the
> > > per-domain event_lock is held, reducing performance when a guest has
> > > many VCPUs and high interrupt rates.
> > 
> > Did you CC me due to a possible impact on ARM? If so then I think since
> > ARM
> > lacks this "dpci" stuff none of these changes should have any impact on
> > that arch.
> > 
> > If you think I've missed something or you CCd me for some other reason
> > please let me know.
> 
> This series seems to fall into "THE REST" category.

Ah, only Jan and I were CCd so I didn't think of that.

I think despite the paths this ends up being x86 specific, so I'll leave it
to Jan.

Ian.

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