On Sat, Mar 29, 2014 at 08:27:07AM +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2014-03-28 at 16:18 +0800, Kevin Hao wrote:
>
> > powerpc: Set the correct ksp_limit on ppc32 when switching to irq stack
> >
>
> Kevin. It looks like it was applied to 3.14 and sent to 3.12 stable but
> not
On Fri, 2014-03-28 at 16:18 +0800, Kevin Hao wrote:
> powerpc: Set the correct ksp_limit on ppc32 when switching to irq stack
>
Kevin. It looks like it was applied to 3.14 and sent to 3.12 stable but
not 3.13 ... can you fix that up ?
Cheers,
Ben.
> Guenter Roeck has got the followi
On Fri, 2014-03-28 at 15:38 +0800, Dongsheng Wang wrote:
> From: Wang Dongsheng
>
> If softirq use hardirq stack, we will get kernel painc when a hard irq coming
> again
> during __do_softirq enable local irq to deal with softirq action. So we need
> to switch
> satck into softirq stack when in
On Fri, Mar 28, 2014 at 09:00:13AM +, dongsheng.w...@freescale.com wrote:
> Thanks Kevin. Your patch works normal. :)
>
> I still have some confused. I think when __do_softirq always get a interrupt,
> the hard stack will be run out, isn't it?
No, it won't. Please see the explanation in the
ong-R64188; Wood Scott-B07421; Thomas Gleixner; linuxppc-
> d...@lists.ozlabs.org; Ingo Molnar; Martin Schwidefsky
> Subject: Re: [PATCH] powerpc/irq: Remove HAVE_IRQ_EXIT_ON_IRQ_STACK feature at
> powerpc platform
>
> On Fri, Mar 28, 2014 at 03:38:32PM +0800, Dongsheng Wang wrote:
>
On Fri, Mar 28, 2014 at 03:38:32PM +0800, Dongsheng Wang wrote:
> From: Wang Dongsheng
>
> If softirq use hardirq stack, we will get kernel painc when a hard irq coming
> again
> during __do_softirq enable local irq to deal with softirq action. So we need
> to switch
> satck into softirq stack
From: Wang Dongsheng
If softirq use hardirq stack, we will get kernel painc when a hard irq coming
again
during __do_softirq enable local irq to deal with softirq action. So we need to
switch
satck into softirq stack when invoke soft irq.
Task--->
| Task stack
|
Interr
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