Re: [Xen-devel] [PATCH] xen/arm: route irqs to cpu0

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Thu, Feb 20, 2014 at 2:52 PM, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Wed, 19 Feb 2014, George Dunlap wrote:
>> On 02/19/2014 01:53 PM, Ian Campbell wrote:
>> > On Wed, 2014-02-19 at 13:43 +0000, Julien Grall wrote:
>> > > Hi all,
>> > >
>> > > Ping?
>> > No one made a case for a release exception so I put it in my 4.5 pile.
>> >
>> > >   It would be nice to have this patch for Xen 4.4 as IPI priority
>> > > patch won't be pushed before the release.
>> > >
>> > > The patch is a minor change and won't impact normal use. When dom0 is
>> > > built, Xen always do it on CPU 0.
>> > Right, so whoever is doing otherwise already has a big pile of patches I
>> > presume?
>> >
>> > It's rather late to be making such changes IMHO, but I'll defer to
>> > George.
>>
>> I can't figure out from the description what's the advantage of having it in
>> 4.4.
>
> People that use the default configuration won't see any differences but
> people that manually modify Xen to start a second domain and assign a
> device to it would.
> To give you a concrete example, it fixes a deadlock reported by
> Oleksandr Tyshchenko:
>
> http://marc.info/?l=xen-devel&m=139099606402232

Right -- I think if I had been cc'd when the patch was submitted, I
would have said yes for sure; but at this point I think we just want
to get 4.4.0 out without any more delays if possible.

 -George

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