linux-kernel - Re: [PATCH 1/2] MIPS: OCTEON: fix kernel crash when offlining a CPU

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Message-ID: <20150115195345.GA8087@fuloong-minipc.musicnaut.iki.fi>
Date:	Thu, 15 Jan 2015 21:53:46 +0200
From:	Aaro Koskinen <aaro.koskinen@....fi>
To:	David Daney <ddaney.cavm@...il.com>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	David Daney <david.daney@...ium.com>,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Hemmo Nieminen <hemmo.nieminen@....fi>, stable@...r.kernel.org
Subject: Re: [PATCH 1/2] MIPS: OCTEON: fix kernel crash when offlining a CPU

Hi,

On Thu, Jan 15, 2015 at 11:36:12AM -0800, David Daney wrote:
> On 01/15/2015 10:49 AM, Aaro Koskinen wrote:
> >octeon_cpu_disable() will unconditionally enable interrupts when called
> >with interrupts disabled. Fix that.
> 
> interrupts are always disabled here, so...

Is that also true for all the currently supported stable kernels...?
Or should I just drop Cc: stable from this patch?

> Just remove this...
> 
> >  	octeon_fixup_irqs();
> >-	local_irq_enable();
> >+	local_irq_restore(flags);
> 
> ... and this.
> 
> >
> >  	flush_cache_all();
> >  	local_flush_tlb_all();
> >
> 
> You can add an Acked-by me if you do that.

Ok, I will do that.

A.
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