Re: [Xen-devel] [PATCH 00/03 V2] arm: host SMP support

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

On 17/04/13 14:28, Ian Campbell wrote:
> On Wed, 2013-04-17 at 14:20 +0100, George Dunlap wrote:
> > On 17/04/13 13:52, Ian Campbell wrote:
> > > Most of v1 one went in already. This rebases Rebases the remainder of v1
> > > and addressed the comments by dropping the use of the GROUP1 bit.
> > >
> > > I think SMP is a substantial feature of Xen on ARM for 4.3 and it is
> > > therefore worthy of a freeze exception. It touches only ARM specific
> > > code.
> > Yeah, I think ARM without SMP is almost a bug. :-)  So for this series:
> >
> > Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
> >
> > > I would like to apply Julien's "implement smp_call_function" series[0]
> > > on top of it which fixes reboot/shutdown but which makes the x86
> > > smp_call_function generic and so necessarily touches x86 and generic
> > > code. If that is considered too risky (I personally think it should be
> > > OK, it's a pretty obvious move) then we could duplicate that code for
> > > ARM.
> > >
> > > [0] v2 at <1366119508-9227-3-git-send-email-julien.grall@xxxxxxxxxx>
> > Let me take a look.  The most important question is, if there's a bug,
> > will we find it before the release?  Since smp_call_function() is called
> > by basically everyone all the time, I think we can be pretty confident
> > that we'll find any bugs in x86 code.  Would you agree?
> It's not called much on ARM but I believe it is on x86 so Yes.
>
> It is also a pretty simple move with the only change being to refactor
> the one arch specific line in to a per arch function.
If Keir or Jan think that if there is a regression we are highly likely 
to catch it before the release, I'm OK with Julien's series.
 -George

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