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

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Message-ID: <86802c440804111326t4c3ff4b6od33a128560b58aec@mail.gmail.com>
Date:	Fri, 11 Apr 2008 13:26:06 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"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 Fri, Apr 11, 2008 at 12:26 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> 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.

please keep the three patches and applied the two attached debug patches.

i wonder if there is some io allocation overlapping with your system.

YH

View attachment "debug_extra_pci_bus_res.patch" of type "text/x-patch" (1299 bytes)

View attachment "debug_extra_pci_res_range.patch" of type "text/x-patch" (1787 bytes)