linux-kernel - Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800

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Date:	Thu, 28 Jan 2010 14:41:09 +0100
From:	Borislav Petkov <borislav.petkov@....com>
To:	Mark Hounschell <markh@...pro.net>
CC:	Andreas Herrmann <andreas.herrmann3@....com>, dmarkh@....rr.com,
	Yuhong Bao <yuhongbao_386@...mail.com>,
	venkatesh.pallipadi@...el.com, andi@...stfloor.org,
	Linus Torvalds <torvalds@...ux-foundation.org>, alain@...ff.lu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: Disable HPET MSI on ATI SB700/SB800

On Thu, Jan 28, 2010 at 08:25:23AM -0500, Mark Hounschell wrote:
> On 01/28/2010 04:17 AM, Mark Hounschell wrote:
> > On 01/25/2010 12:10 PM, Andreas Herrmann wrote:
> >> On Fri, Jan 22, 2010 at 11:21:06PM -0800, Yuhong Bao wrote:
> >>>
> >>>> HPET MSI on platforms with ATI SB700/SB800 as they seem to have some
> >>>> side-effects on floppy DMA. Do not use HPET MSI on such platforms.
> >>
> >> Argh, will see what information I can find about this problem ...
> >>
> >>> I think somebody from AMD should review the situation.Clearly
> >>   something is happening inside their southbridge.CCing Andreas
> >>   Herrmann from AMD.
> >>
> >> I have the feeling that this problem should rather be fixed with a DMI
> >> quirk instead of disabling HPET MSI for the entire chipset.
> >>
> >> Was the latest available BIOS installed on the affected system?
> >>
> > 
> > You mean "systems" of different manufactures?  I will check today. Due to
> > mis configured filters I didn't see this until today. Sorry.
> > 
> > Mark
> > 
> 
> My BIOS were below rev on all my affected boards but updating did not help
> with the problem.

Hi,

can you post the BIOS vendors of the boards along with the respective
BIOS versions?

Thanks.

-- 
Regards/Gruss,
Boris.

--
Advanced Micro Devices, Inc.
Operating Systems Research Center

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