linux-kernel - Re: [PATCH] pci: disable MSI on VIA K8M800

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Message-Id: <20100523.015426.00037797.davem@davemloft.net>
Date:	Sun, 23 May 2010 01:54:26 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	tj@...nel.org
Cc:	jbarnes@...tuousgeek.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH] pci: disable MSI on VIA K8M800

From: Tejun Heo <tj@...nel.org>
Date: Sun, 23 May 2010 10:22:55 +0200

> MSI delivery from on-board ahci controller doesn't work on K8M800.  At
> this point, it's unclear whether the culprit is with the ahci
> controller or the host bridge.  Given the track record and considering
> the rather minimal impact of MSI, disabling it seems reasonable.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Reported-by: Rainer Hurtado Navarro <publio.escipion.el.africano@...il.com>
> Cc: stable@...nel.org
> ---
> Maybe we should whitelist working ones from via rather than the other
> way around.  :-(

Correctness first, of course, but saying the impact of MSI is minimal
ignores the fact that no hardware multiqueue networking at all is
possible without it. :-)

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