netdev - RE: [PATCH] forcedeth: msi interrupts

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Date:	Sat, 7 Jun 2008 12:24:23 -0700
From:	"Ayaz Abdulla" <AAbdulla@...dia.com>
To:	"Karen Shaeffer" <shaeffer@...ralscape.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>, <jgarzik@...ox.com>,
	<manfred@...orfullife.com>, <netdev@...r.kernel.org>
Subject: RE: [PATCH] forcedeth: msi interrupts

Karen,

It is a bug fix that affects MSI interrupts. Any kernel that is
accepting critical fixes should add the patch.

Thanks,
Ayaz
 

-----Original Message-----
From: Karen Shaeffer [mailto:shaeffer@...ralscape.com] 
Sent: Friday, June 06, 2008 2:40 PM
To: Ayaz Abdulla
Cc: Andrew Morton; jgarzik@...ox.com; manfred@...orfullife.com;
netdev@...r.kernel.org
Subject: Re: [PATCH] forcedeth: msi interrupts

On Fri, Jun 06, 2008 at 02:19:31PM -0700, Ayaz Abdulla wrote:
> Yes, that would be great!

Hi Ayaz,
How far back should it be back ported? Do you know?
Thanks,
Karen

> 
> -----Original Message-----
> From: Andrew Morton [mailto:akpm@...ux-foundation.org]
> Sent: Friday, June 06, 2008 2:11 PM
> To: Ayaz Abdulla
> Cc: jgarzik@...ox.com; manfred@...orfullife.com; 
> netdev@...r.kernel.org
> Subject: Re: [PATCH] forcedeth: msi interrupts
> 
> 
> On Fri, 06 Jun 2008 14:04:05 -0400
> Ayaz Abdulla <aabdulla@...dia.com> wrote:
> 
> > 
> > 
> > Andrew Morton wrote:
> > > On Fri, 06 Jun 2008 13:15:32 -0400 Ayaz Abdulla 
> > > <aabdulla@...dia.com> wrote:
> > > 
> > > 
> > >>Andrew Morton wrote:
> > >>
> > >>>On Tue, 03 Jun 2008 16:51:46 -0400 Ayaz Abdulla 
> > >>><aabdulla@...dia.com> wrote:
> > >>>
> > >>> > This patch adds a workaround for lost MSI interrupts. There is

> > >>> > a
> race
> > >>> > condition in the HW in which future interrupts could be
missed.
> The
> > >>> > workaround is to toggle the MSI irq mask.
> > >>> >
> > >>>
> > >>>Do you think this is a 2.6.26 thing?
> > >>
> > >>It is by HW design, not related to the kernel.
> > > 
> > > 
> > > Sorry, what I meant was: do you believe that this patch should be 
> > > in 2.6.26?
> > Yes, it should be treated as a critical fix.
> 
> So should it also be backported into 2.6.25.x?
> 
> Bear in mind that $major_distros are apparently basing product on 
> 2.6.25.
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--
 Karen Shaeffer
 Neuralscape, Palo Alto, Ca. 94306
 shaeffer@...ralscape.com  http://www.neuralscape.com
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