linux-kernel - Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete

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Date:	Fri, 02 May 2008 02:29:52 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mika Fischer <mika.fischer@...pnet.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete
 - auto detect

Yinghai Lu wrote:
> On Thu, May 1, 2008 at 4:45 AM, Gabriel C <nix.or.die@...glemail.com> wrote:
>> Yinghai Lu wrote:
>>  > loop mtrr chunk_size and gran_size from 1M to 2G to find out optimal value.
>>  >
>>  > so user don't need to add mtrr_chunk_size and mtrr_gran_size,
>>  >
>>  > if optimal value is not found, print out all list to help select less optimal
>>  > value.
>>  >
>>  > add mtrr_spare_reg_nr= so user could set 2 instead of 1, if the card need more entries.
>>
>>  WOW :)
>>
>>  With this patch all is working fine , no RAM is lost , X is fast ,
>>  so far everything else seems to work fine. \o/
>>
>>  I will test on 32bit tomorrow and stress the box later on today to be sure everything works fine.
>>
>>  There is my dmesg , meminfo , mtrr output with this patch on top x86-latest :
>>
>>  http://frugalware.org/~crazy/mtrr_x86-latest/
> 
> while look at that you boot log, it seems there is one bug about hole
> position. but I look that code, it should already be handled.
> 
> Can you send out boot msg and /proc/mtrr when using
> disable_mtrr_cleanup command line?

Sure , there it is :

http://frugalware.org/~crazy/mtrr_x86-latest/dmesg2
http://frugalware.org/~crazy/mtrr_x86-latest/proc_mtrr2

I'm still using this version of your patch , didn't got any time to update to v2.
If you want me to try v2 tell me , I have some free time in about 30 minutes.

> 
> Thanks
> 
> Yinghai Lu
> 

Gabriel
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