linux-kernel - Re: x86 git tree broken (bisected)

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Date:	Fri, 11 Apr 2008 21:26:28 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Ingo Molnar <mingo@...e.hu>, Yinghai Lu <yinghai.lu@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Anvin" <hpa@...or.com>, Arjan van de Ven <arjan@...radead.org>
Subject: Re: x86 git tree broken (bisected)

On Friday, 11 of April 2008, Rafael J. Wysocki wrote:
> On Thursday, 10 of April 2008, Ingo Molnar wrote:
> > 
> > * Ingo Molnar <mingo@...e.hu> wrote:
> > 
> > > > > > First, the X server doesn't want to start (it says it couldn't 
> > > > > > mmap the framebuffer).
> > > > > 
> > > > > could you send your .config?
> > > > 
> > > > Attached.
> > > 
> > > could you disable this option:
> > > 
> > >  CONFIG_NONPROMISC_DEVMEM=y
> > > 
> > > does it help with the X problem?
> 
> That didn't help.
> 
> > btw., Xorg works fine here on a comparable AMD system - but i use a 
> > rather new distro (Fedora 8) which has Xorg 7.2.
> 
> My system is an OpenSUSE 10.3 and it has Xorg 7.2 as well.
> 
> I think the problem is somehow related to the Radeon.

The bisection turned up commit ea1441bdf53692c3dc1fd2658addcf1205629661
"x86: use bus conf in NB conf fun1 to get bus range on, on 64-bit"  as the one
causing problems.

Unfortunately, I can't revert cleanly it, because there are two more commits
depending on it in a highly nontrivial fashion, so I have reverted all three
commits

a365998cd2cecfb827469dbd57c29602c106cb83
44f7f90fbe7a3a99aab082f765346514b7b5c705
ea1441bdf53692c3dc1fd2658addcf1205629661

and X starts again.  Also, suspend to RAM works from under X.

Thanks,
Rafael
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