linux-kernel - Re: [BUG] linux-2.6.28-rc3 regression: IRQ smp

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Message-Id: <20081105.015838.25391202.davem@davemloft.net>
Date:	Wed, 05 Nov 2008 01:58:38 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mchan@...adcom.com
Cc:	dada1@...mosbay.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [BUG] linux-2.6.28-rc3 regression: IRQ smp_affinities not
 respected

From: "Michael Chan" <mchan@...adcom.com>
Date: Tue, 4 Nov 2008 22:45:43 -0800

> I believe this may be the patch that broke it:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce6fce4295ba727b36fdc73040e444bd1aae64cd
> 
> I don't remember all the details, but the Broadcom 5708 chip is
> affected because it does not support MSI per-vector masking.
> 
> One way to get around is to disable MSI with bnx2 parameter
> disable_msi=1.

On first glance my reaction is that I think that patch should be
reverted, given what the tradeoff appears to be.

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