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

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Message-ID: <86802c440805011706m51f4840dye0191c7e853d5aa@mail.gmail.com>
Date:	Thu, 1 May 2008 17:06:10 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Gabriel C" <nix.or.die@...glemail.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

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?

Thanks

Yinghai Lu
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