Re: [Xen-devel] [PATCH V2 0/2] xen/arm: implement smp_call_function

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-04-22 at 12:44 +0100, Ian Campbell wrote:
> On Tue, 2013-04-16 at 14:38 +0100, Julien Grall wrote:
> > This patch series can be applied on top of Ian's patch series "arm: host 
> > SMP support"
> > 
> > The first patch fixes an issue on SMP board when smp_call_function is
> > implemented.
> > The second patch implements the function.
> > 
> > Changes since V1:
> >   - Move smp_call_function and on_selected_cpus in the common part
> >   - Use spin_lock instead of spin_lock_irqsave in patch 1
> > 
> > Julien Grall (2):
> >   xen/arm: gic_disable_cpu must be called with interrupts disabled
> >   xen/arm: implement smp_call_function
> 
> Keir/Jan do you have any Ack/Nack WRT the code motion from x86 to common
> code?

Ping?

> WRT the freeze George said in <516EA78A.9090800@xxxxxxxxxxxxx>:
>         
>         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.
> 
> I think smp_call_function is used much more on x86 than on ARM (which
> currently only needs it for reboot). On x86 it (or rather the inner
> on_selected_cpus function) is used in at least the IRQ, time calibration
> and EPT code which ought to give it a reasonable workout under normal
> use I think...
> 
> > 
> >  xen/arch/arm/gic.c            |    9 +++-
> >  xen/arch/arm/smp.c            |   11 ++---
> >  xen/arch/x86/smp.c            |   88 +++-----------------------------------
> >  xen/common/Makefile           |    1 +
> >  xen/common/smp.c              |   94 
> > +++++++++++++++++++++++++++++++++++++++++
> >  xen/include/asm-arm/gic.h     |    1 +
> >  xen/include/asm-x86/hardirq.h |    1 +
> >  xen/include/xen/smp.h         |    7 +++
> >  8 files changed, 120 insertions(+), 92 deletions(-)
> >  create mode 100644 xen/common/smp.c
> > 
> 
> 
> 
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