Date: Fri, 6 Mar 2009 20:13:45 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Daniel Yeisley <dan.yeisley@unisys.com>
Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
       yinghai@kernel.org, stable@kernel.org, tglx@linutronix.de,
       linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/apic] x86: MSI: check for BIOS assigned addresses
Message-ID: <20090306191345.GD28582@elte.hu>
References: <1236352309.31604.2.camel@localhost.localdomain> <tip-affd49d36e2e2df4cbb3e07a57db901c23823b6a@git.kernel.org> <20090306184514.GC15526@elte.hu> <1236364109.31604.10.camel@localhost.localdomain>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1236364109.31604.10.camel@localhost.localdomain>
User-Agent: Mutt/1.5.18 (2008-05-17)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1693
Lines: 45


* Daniel Yeisley <dan.yeisley@unisys.com> wrote:

> On Fri, 2009-03-06 at 19:45 +0100, Ingo Molnar wrote:
> > * Daniel Yeisley <dan.yeisley@unisys.com> wrote:
> > 
> > > Commit-ID:  affd49d36e2e2df4cbb3e07a57db901c23823b6a
> > > Gitweb:     http://git.kernel.org/tip/affd49d36e2e2df4cbb3e07a57db901c23823b6a
> > > Author:     "Daniel Yeisley" <dan.yeisley@unisys.com>
> > > AuthorDate: Fri, 6 Mar 2009 10:11:49 -0500
> > > Commit:     Ingo Molnar <mingo@elte.hu>
> > > CommitDate: Fri, 6 Mar 2009 19:32:44 +0100
> > > 
> > > x86: MSI: check for BIOS assigned addresses
> > > 
> > > Impact: fix ACPI hotplug on certain systems
> > 
> > Note, this commit means that i moved the commit over from 
> > tip:x86/urgent into tip:x86/apic - i.e. with a 2.6.30 merge 
> > date. When exactly was this regression introduced? I think this 
> > code never really accepted the MSI settings from the firmware, 
> > so changing that behavior might affect a lot of systems.
> > 
> > So i'm uneasy about applying this fix this late in the .29 
> > cycle, but marked it for -stable backport so it could hit 
> > 2.6.29.1 if it stays problem-free.
> > 
> > 	Ingo
> 
> I initially noticed the problem on a 2.6.18 kernel.  ACPI 
> hotplugging didn't work unless I booted with pci=nomsi.  I 
> don't have a problem with waiting until 2.6.30 to make sure it 
> is thoroughly tested.

Okay - so it's an ancient bug. The current track should thus be 
fine.

Thanks,

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/