linux-kernel - Re: 2.6.29 git master and PAT problems

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Message-ID: <86802c440903311345h2f07977fr5a4b47fe652944b3@mail.gmail.com>
Date:	Tue, 31 Mar 2009 13:45:17 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Arkadiusz Miskiewicz <a.miskiewicz@...il.com>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.29 git master and PAT problems

On Tue, Mar 31, 2009 at 12:44 AM, Arkadiusz Miskiewicz
<a.miskiewicz@...il.com> wrote:
> On Tuesday 31 of March 2009, Pallipadi, Venkatesh wrote:
>> On Mon, Mar 30, 2009 at 04:25:11PM -0700, Arkadiusz Miskiewicz wrote:
>> > On Tuesday 31 of March 2009, Arkadiusz Miskiewicz wrote:
>> > > On Monday 30 of March 2009, Pallipadi, Venkatesh wrote:
>> > >
>> > > More info follows. Now I've switched to
>> > > e1c502482853f84606928f5a2f2eb6da1993cda1 which contains latest drm
>> > > fixes and now I get much lower numbers of PAT errors but still.
>> >
>> > Also when I switch t400 into discrete mode (radeon hd 3400 instead
>> > of integrated intel GM45) I get such errors (probably unrelated
>> > to these seen when using intel):
>> >
>> > [  419.187657] X:10550 conflicting memory types cfff0000-d0000000
>> > uncached<->uncached-minus [  419.187670] reserve_memtype failed
>> > 0xcfff0000-0xd0000000, track uncached, req write-back [  419.553914]
>> > X:10550 conflicting memory types cfff0000-d0000000
>> > uncached<->uncached-minus [  419.553923] reserve_memtype failed
>> > 0xcfff0000-0xd0000000, track uncached, req write-back [  419.813592]
>> > X:10550 conflicting memory types cfff0000-d0000000
>> > uncached<->uncached-minus [  419.813601] reserve_memtype failed
>> > 0xcfff0000-0xd0000000, track uncached, req write-back [  420.100102]
>> > X:10550 conflicting memory types cfff0000-d0000000
>> > uncached<->uncached-minus [  420.100111] reserve_memtype failed
>> > 0xcfff0000-0xd0000000, track uncached, req write-back
>>
>> Yes. This is a different problem than the freeing invalid type one. Are
>> these errors also with latest git kernel? Can you try the patch below
>> (which is a part of a bigger cleanup patch I have lined up).
>
> It's a latest git kernel as of today morning
> (latest commit is 15f7176eb1cccec0a332541285ee752b935c1c85)
> + your patch. Problem persists:
>
> [   74.696353] [drm] Setting GART location based on new memory map
> [   74.711520] [drm] Loading RV620 CP Microcode
> [   74.711792] [drm] Loading RV620 PFP Microcode
> [   74.726719] [drm] Resetting GPU
> [   74.726776] [drm] writeback test succeeded in 1 usecs
> [   75.256034] X:5366 conflicting memory types d0000000-e0000000 uncached-minus<->write-combining
> [   75.256043] reserve_memtype failed 0xd0000000-0xe0000000, track uncached-minus, req write-back
> [   75.849951] X:5366 conflicting memory types d0000000-e0000000 uncached-minus<->write-combining
> [   75.849960] reserve_memtype failed 0xd0000000-0xe0000000, track uncached-minus, req write-back
> [   76.054374] X:5366 conflicting memory types d0000000-e0000000 uncached-minus<->write-combining
> [   76.054377] reserve_memtype failed 0xd0000000-0xe0000000, track uncached-minus, req write-back
> [   76.074481] X:5378 freeing invalid memtype d0000000-e0000000
> [   76.176881] X:5366 conflicting memory types d0000000-e0000000 uncached-minus<->write-combining
> [   76.176885] reserve_memtype failed 0xd0000000-0xe0000000, track uncached-minus, req write-back
> [   76.207734] X:5380 freeing invalid memtype d0000000-e0000000
>
> cat /debug/x86/pat_memtype_list
> PAT memtype list:
> uncached-minus @ 0xbfad1000-0xbfad2000
> uncached-minus @ 0xbfad2000-0xbfad3000
> uncached-minus @ 0xbfad3000-0xbfad4000
> uncached-minus @ 0xbfb06000-0xbfb07000
> uncached-minus @ 0xbfb07000-0xbfb08000
> uncached-minus @ 0xbfd6a000-0xbfd6b000
> uncached-minus @ 0xbfd6a000-0xbfd6b000
> uncached-minus @ 0xbfd6a000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd79000-0xbfd7a000
> uncached-minus @ 0xbfd7b000-0xbfd7c000
> uncached-minus @ 0xbfd8d000-0xbfd8e000
> uncached-minus @ 0xbfd8e000-0xbfd8f000
> uncached-minus @ 0xbfd8e000-0xbfd8f000
> uncached-minus @ 0xcfff0000-0xd0000000
> uncached-minus @ 0xcfff0000-0xd0000000
> uncached-minus @ 0xcfff0000-0xd0000000
> uncached-minus @ 0xcfff0000-0xd0000000
> uncached-minus @ 0xcfff0000-0xd0000000
> write-combining @ 0xdfff0000-0xe0000000
> uncached-minus @ 0xe0000000-0xe4000000
> uncached-minus @ 0xf4200000-0xf4202000
> uncached-minus @ 0xf4300000-0xf4301000
> uncached-minus @ 0xf4301000-0xf4302000
> uncached-minus @ 0xf4301000-0xf4302000
> uncached-minus @ 0xfc200000-0xfc220000
> uncached-minus @ 0xfc220000-0xfc224000
> uncached-minus @ 0xfc225000-0xfc226000
> uncached-minus @ 0xfc226000-0xfc227000
> uncached-minus @ 0xfc226000-0xfc227000
> uncached-minus @ 0xfc227000-0xfc228000
> uncached-minus @ 0xfed00000-0xfed01000
> uncached-minus @ 0xfed1f000-0xfed20000
> cat /proc/mtrr
> reg00: base=0x13c000000 ( 5056MB), size=   64MB, count=1: uncachable
> reg01: base=0x000000000 (    0MB), size= 2048MB, count=1: write-back
> reg02: base=0x080000000 ( 2048MB), size= 1024MB, count=1: write-back
> reg03: base=0x100000000 ( 4096MB), size= 1024MB, count=1: write-back
> reg04: base=0x0d0000000 ( 3328MB), size=  256MB, count=1: write-combining
>

please try on attached patch on top on tip/master

http://people.redhat.com/mingo/tip.git/readme.txt

YH

View attachment "pat_fix.patch" of type "text/x-patch" (2895 bytes)