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Re: [PATCH] x86_32: trim memory by updating e820 v3

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From: Mika Fischer <mika.fischer@...>
To: Yinghai Lu <yhlu.kernel@...>
Cc: Andrew Morton <akpm@...>, Ingo Molnar <mingo@...>, Andi Kleen <ak@...>, H. Peter Anvin <hpa@...>, LKML <linux-kernel@...>, Jesse Barnes <jesse.barnes@...>, <balajirrao@...>
Subject: Re: [PATCH] x86_32: trim memory by updating e820 v3
Date: Monday, April 28, 2008 - 5:44 am

Yinghai Lu schrieb:

OK, this time it worked!

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=0x100000000 (4096MB), size=1024MB: write-back, count=1

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=0x100000000 (4096MB), size=1024MB: write-back, count=1

Both seem equivalent and correct.

There are also no warnings anymore in the dmesg output:
With mtrr_chunk_size=1g:
http://bugzilla.kernel.org/attachment.cgi?id=15950

Without mtrr_chunk_size=1g:
http://bugzilla.kernel.org/attachment.cgi?id=15951


I'm not sure how to do this. Can I compile it under 32bit Linux? If not that
will be difficult since I don't have space left for a 64bit installation on my
hard-drive. Maybe Gabiel C can test 64bit?

Regards,
 Mika
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Messages in current thread:
[PATCH] x86_32: trim memory by updating e820 v2, Yinghai Lu, (Mon Jan 21, 2:56 am)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Ingo Molnar, (Tue Jan 22, 12:51 pm)
[PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Tue Jan 22, 8:23 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Andrew Morton, (Sat Apr 26, 6:56 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 2:50 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Mon Apr 28, 4:38 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 5:09 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Mon Apr 28, 5:44 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 5:58 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Sat Apr 26, 9:22 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Sun Apr 27, 4:29 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Sat Apr 26, 8:57 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Sun Apr 27, 4:21 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Sat Apr 26, 8:56 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 2:44 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 5:18 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 5:34 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 5:54 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Ingo Molnar, (Mon Apr 28, 9:53 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Jesse Barnes, (Mon Apr 28, 12:09 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Ingo Molnar, (Tue Apr 29, 6:37 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Jesse Barnes, (Tue Apr 29, 11:52 am)
[patch] PCI: export resource_wc in pci sysfs, Ingo Molnar, (Tue Apr 29, 6:03 pm)
Re: [patch] PCI: export resource_wc in pci sysfs, Andrew Morton, (Tue Apr 29, 6:24 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Andrew Morton, (Tue Apr 29, 8:40 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Mon Apr 28, 12:31 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Jesse Barnes, (Mon Apr 28, 12:55 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 10:15 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Mon Apr 28, 10:11 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 10:24 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 3:08 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 3:46 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 3:06 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 3:38 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 4:45 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 5:19 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 6:03 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 6:56 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 7:23 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 9:05 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 10:41 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Ingo Molnar, (Tue Apr 29, 6:34 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Tue Apr 29, 6:42 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Gabriel C, (Mon Apr 28, 6:03 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Mika Fischer, (Mon Apr 28, 6:07 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 3:03 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Sat Apr 26, 9:05 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Eric W. Biederman, (Mon Apr 28, 2:07 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Ingo Molnar, (Tue Apr 29, 6:31 am)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Eric W. Biederman, (Tue Apr 29, 1:29 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Tue Apr 29, 2:40 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Eric W. Biederman, (Tue Apr 29, 3:19 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Tue Apr 29, 3:44 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Eric W. Biederman, (Tue Apr 29, 4:02 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v3, Yinghai Lu, (Mon Apr 28, 7:16 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Jesse Barnes, (Mon Jan 21, 12:30 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Justin Piszcz, (Mon Jan 21, 3:14 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Yinghai Lu, (Mon Jan 21, 4:09 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Justin Piszcz, (Mon Jan 21, 5:37 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Yinghai Lu, (Tue Jan 22, 11:50 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Justin Piszcz, (Fri Jan 25, 8:01 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Ingo Molnar, (Mon Jan 28, 11:09 am)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Justin Piszcz, (Mon Jan 28, 2:07 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Yinghai Lu, (Fri Jan 25, 8:16 pm)
Re: [PATCH] x86_32: trim memory by updating e820 v2, Justin Piszcz, (Fri Jan 25, 8:37 pm)