netdev - Re: [atl1-devel] APIC error on 32-bit kernel

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Message-ID: <68676e00703271611k4082885fqe0768fdb05a0b65d@mail.gmail.com>
Date:	Wed, 28 Mar 2007 01:11:13 +0200
From:	"Luca Tettamanti" <kronos.it@...il.com>
To:	"Jay Cliburn" <jacliburn@...lsouth.net>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	netdev@...r.kernel.org, atl1-devel@...ts.sourceforge.net
Subject: Re: [atl1-devel] APIC error on 32-bit kernel

On 3/28/07, Jay Cliburn <jacliburn@...lsouth.net> wrote:
> On Tue, 27 Mar 2007 14:42:20 -0600
> ebiederm@...ssion.com (Eric W. Biederman) wrote:
>
> Thanks for replying, Eric.  I've added atl1-devel to the cc list.
>
> > Do you have msi's working in 2.6.21-rc4 in the x86_64 kernel?
>
> I can't personally verify it anymore because I removed x86_64 to
> duplicate the MSI problem on i386, but the driver was working fine under
> x86_64 in earlier versions of 2.6.21-rcX.  The first hint of a problem
> was a report on March 12 by a user running a 32-bit 2.6.19 Fedora 6
> kernel who encountered a kernel panic on network startup.
>
> > > We also do not see this problem on Intel-based motherboards, with
> > > either 32- or 64-bit kernels.
> >
> > Can you confirm MSI is enabled in those kernels as well?
>
> Absolutely, yes.  MSI is enabled and working for me on a 64-bit
> kernel on an Intel-based motherboard, and Luca Tettamanti reports no
> problems running a 32-bit kernel on a similar motherboard.  (Luca wrote
> the MSI patch for the atl1 driver.)

Well, I've a P5B-E, with Intel chipset (and Intel usually gets MSI right).
Can you run the linux firmware test
(http://www.linuxfirmwarekit.org/)? FADT test may shed some light on
the issue.

Luca
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