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From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Mika Fischer" <mika.fischer@zoopnet.de>
Cc: "Andrew Morton" <akpm@linux-foundation.org>,
	"Ingo Molnar" <mingo@elte.hu>, "Andi Kleen" <ak@suse.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	LKML <linux-kernel@vger.kernel.org>,
	"Jesse Barnes" <jesse.barnes@intel.com>,
	balajirrao@gmail.com
Subject: Re: [PATCH] x86_32: trim memory by updating e820 v3
Date: Mon, 28 Apr 2008 02:09:47 -0700	[thread overview]
Message-ID: <86802c440804280209x401fc223w3d272c6c365e58af@mail.gmail.com> (raw)
In-Reply-To: <48158CF3.60004@zoopnet.de>

On Mon, Apr 28, 2008 at 1:38 AM, Mika Fischer <mika.fischer@zoopnet.de> wrote:
> Hi Yinghai,
>
>  Yinghai Lu schrieb:
>
> >>  reg00: base=0xc0000000 (3072MB), size=1024MB: uncachable, count=1
>  >>  reg01: base=0x00000000 ( 0MB), size=4096MB: write-back, count=1
>  >>  reg02: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
>  >>  reg03: base=0xbf700000 (3063MB), size= 1MB: uncachable, count=1
>  >>  reg04: base=0xbf800000 (3064MB), size= 8MB: uncachable, count=1
>  >>
>  >>  which screws up the X server's attempt to map the video memory at
>  >>  0xd0000000.
>  >
>  > please try the patch at
>  >
>  > http://lkml.org/lkml/2008/4/28/52
>  >
>  > with mtrr_chunk_size=1g, and you should get
>  >
>  > you should get
>  >>  reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
>  >>  reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
>  >>  reg02: base=0xbf700000 (3063MB), size= 1MB: uncachable, count=1
>  >>  reg03: base=0xbf800000 (3064MB), size= 8MB: uncachable, count=1
>  >>  reg04: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
>
>  Wow, thanks a lot for this patch! It almost works. This is what I get
>  with mtrr_chunk_size=1g:
>
> reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
>  reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
>  reg02: base=0xbf700000 (3063MB), size=   1MB: uncachable, count=1
>  reg03: base=0xbf800000 (3064MB), size=   8MB: uncachable, count=1
>  reg04: base=0x100001000 (4096MB), size=   4KB: write-back, count=1
>  reg05: base=0x100002000 (4096MB), size=   8KB: write-back, count=1
>  reg06: base=0x100004000 (4096MB), size=  16KB: write-back, count=1
>  reg07: base=0x100008000 (4096MB), size=  32KB: write-back, count=1
>
>  And this is what I get without mtrr_chunk_size=1g:
>
> reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
>  reg01: base=0x80000000 (2048MB), size= 512MB: write-back, count=1
>  reg02: base=0xa0000000 (2560MB), size= 256MB: write-back, count=1
>  reg03: base=0xb0000000 (2816MB), size= 256MB: write-back, count=1
>  reg04: base=0xbf700000 (3063MB), size=   1MB: uncachable, count=1
>  reg05: base=0xbf800000 (3064MB), size=   8MB: uncachable, count=1
>  reg06: base=0x100001000 (4096MB), size=   4KB: write-back, count=1
>  reg07: base=0x100002000 (4096MB), size=   8KB: write-back, count=1
>
>  I attached these outputs and the dmesgs to the bug report:
>
> http://bugzilla.kernel.org/show_bug.cgi?id=10508
>
>  dmesg with mtrr_chunk_size=1g:
>  http://bugzilla.kernel.org/attachment.cgi?id=15945
>
>  dmesg without mtrr_chunk_size=1g:
>  http://bugzilla.kernel.org/attachment.cgi?id=15946
>

thanks for testing

please check
http://lkml.org/lkml/2008/4/28/115

also, can you try 64bit too?

YH

  reply	other threads:[~2008-04-28  9:10 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-20  4:45 [PATCH] x86: disable_mtrr_trim only need for x86_64 Yinghai Lu
2008-01-20  5:37 ` H. Peter Anvin
2008-01-20  6:55   ` Yinghai Lu
2008-01-20  8:17   ` [PATCH] x86_64: update e820 instead of updating end_pfn Yinghai Lu
2008-01-20  9:20     ` Ingo Molnar
2008-01-20 15:08       ` Andi Kleen
2008-01-21  5:40         ` [PATCH] x86_64: update e820 instead of updating end_pfn v2 Yinghai Lu
2008-01-21  5:44           ` [PATCH] x86_32: trim memory by updating e820 Yinghai Lu
2008-01-21  5:58           ` [PATCH] x86_64: update e820 instead of updating end_pfn v2 Andi Kleen
2008-01-21  6:05             ` Harvey Harrison
2008-01-21  6:08               ` Andi Kleen
2008-01-21  6:14                 ` Li Zefan
2008-01-21  6:57             ` [PATCH] x86_64: check if Tom2 is enabled Yinghai Lu
2008-01-21 17:24               ` Cyrill Gorcunov
2008-01-21 17:39                 ` H. Peter Anvin
2008-01-21 17:49                   ` Cyrill Gorcunov
2008-01-21 18:03                 ` Andi Kleen
2008-01-21 18:09                   ` Cyrill Gorcunov
2008-01-21 18:15                     ` H. Peter Anvin
2008-01-21 18:46                       ` Andi Kleen
2008-01-21  0:00       ` [PATCH] x86_64: update e820 instead of updating end_pfn Yinghai Lu
     [not found] ` <200801202255.02645.yinghai.lu@sun.com>
     [not found]   ` <200801202255.58642.yinghai.lu@sun.com>
2008-01-21  6:56     ` [PATCH] x86_32: trim memory by updating e820 v2 Yinghai Lu
2008-01-21 16:30       ` Jesse Barnes
2008-01-21 19:14         ` Justin Piszcz
2008-01-21 20:09           ` Yinghai Lu
2008-01-21 21:37             ` Justin Piszcz
2008-01-23  3:50               ` Yinghai Lu
2008-01-26  0:01                 ` Justin Piszcz
2008-01-26  0:16                   ` Yinghai Lu
2008-01-26  0:37                     ` Justin Piszcz
2008-01-28 15:09                   ` Ingo Molnar
2008-01-28 18:07                     ` Justin Piszcz
2008-01-22 16:51       ` Ingo Molnar
2008-01-23  0:23         ` [PATCH] x86_32: trim memory by updating e820 v3 Yinghai Lu
2008-04-26 10:56           ` Andrew Morton
2008-04-26 12:56             ` Gabriel C
2008-04-27  1:05               ` Yinghai Lu
2008-04-28 18:07                 ` Eric W. Biederman
2008-04-28 23:16                   ` Yinghai Lu
2008-04-29 10:31                   ` Ingo Molnar
2008-04-29 17:29                     ` Eric W. Biederman
2008-04-29 18:40                       ` Yinghai Lu
2008-04-29 19:19                         ` Eric W. Biederman
2008-04-29 19:44                           ` Yinghai Lu
2008-04-29 20:02                             ` Eric W. Biederman
2008-04-28  6:44               ` Yinghai Lu
2008-04-28  9:18                 ` Gabriel C
2008-04-28  9:34                   ` Yinghai Lu
2008-04-28  9:54                     ` Gabriel C
2008-04-28 10:03                       ` Gabriel C
2008-04-28 10:07                         ` Mika Fischer
2008-04-28 19:03                           ` Yinghai Lu
2008-04-28 13:53                       ` Ingo Molnar
2008-04-28 14:11                         ` Mika Fischer
2008-04-28 14:24                           ` Gabriel C
2008-04-28 19:06                             ` Yinghai Lu
2008-04-28 19:38                               ` Gabriel C
2008-04-28 20:45                                 ` Gabriel C
2008-04-28 21:19                                   ` Gabriel C
2008-04-28 22:03                                     ` Yinghai Lu
2008-04-28 22:56                                       ` Gabriel C
2008-04-28 23:23                                         ` Yinghai Lu
2008-04-29  1:05                                           ` Gabriel C
2008-04-29  2:41                                             ` Yinghai Lu
2008-04-29 10:34                                               ` Ingo Molnar
2008-04-29 10:42                                                 ` Yinghai Lu
2008-04-28 19:08                             ` Yinghai Lu
2008-04-28 19:46                               ` Gabriel C
2008-04-28 14:15                         ` Gabriel C
2008-04-28 16:09                         ` Jesse Barnes
2008-04-28 16:31                           ` Mika Fischer
2008-04-28 16:55                             ` Jesse Barnes
2008-04-29 10:37                           ` Ingo Molnar
2008-04-29 12:40                             ` Andrew Morton
2008-04-29 15:52                             ` Jesse Barnes
2008-04-29 22:03                               ` [patch] PCI: export resource_wc in pci sysfs Ingo Molnar
2008-04-29 22:24                                 ` Andrew Morton
2008-04-27  0:57             ` [PATCH] x86_32: trim memory by updating e820 v3 Yinghai Lu
2008-04-27  8:21               ` Mika Fischer
2008-04-27  1:22             ` Yinghai Lu
2008-04-27  8:29               ` Mika Fischer
2008-04-28  6:50             ` Yinghai Lu
2008-04-28  8:38               ` Mika Fischer
2008-04-28  9:09                 ` Yinghai Lu [this message]
2008-04-28  9:44                   ` Mika Fischer
2008-04-28  9:58                     ` Gabriel C
2008-01-21  6:57   ` [PATCH] x86_64: update e820 instead of updating end_pfn v3 Yinghai Lu

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