linux-kernel - Re: [PATCH] x86_32: trim memory by updating e820 v2

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Message-id: <200801211209.23901.yinghai.lu@sun.com>
Date:	Mon, 21 Jan 2008 12:09:23 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	Jesse Barnes <jesse.barnes@...el.com>, Andi Kleen <ak@...e.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86_32: trim memory by updating e820 v2

On Monday 21 January 2008 11:14:02 am Justin Piszcz wrote:
> 
> On Mon, 21 Jan 2008, Jesse Barnes wrote:
> 
> > On Sunday, January 20, 2008 10:56 pm Yinghai Lu wrote:
> >> [PATCH] x86_32: trim memory by updating e820 v2
> >>
> >> when mtrr is not covering all e820 table, need to trim the ram, need to
> >> update e820
> >>
> >> reuse some code for x86_64
> >>
> >> here need to add early_identify_cpu for x86_32, and move mtrr_bp_init early
> >>
> >> compiled test only, need someone test it
> >
> > I like this approach too.  So as long as the E820 modification method works
> > (i.e. we have some testers, maybe Justin can give it a try), you can add
> >
> > Signed-off-by:  Jesse Barnes <jesse.barnes@...el.com>
> >
> > or
> >
> > Acked-by:  Jesse Barnes <jesse.barnes@...el.com>
> >
> > as appropriate too.
> >
> > Thanks,
> > Jesse
> >
> 
> Subject: Re: [PATCH] x86_32: trim memory by updating e820 v2
>                           ^^
> 
> I run x86_64 btw-- if there is a kernel.patch for x86_64 please let me 
> know and I can test, thanks.

please get x86.git

  git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
  cd linux-2.6
  #--------------{ x86.git instructions }---------->
  # Add Linus's tree as a remote
  git remote add linus git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

  # Add Ingo's tree as a remote
  git remote add x86 git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git

  # With that setup, just run the following to get any changes you
  # don't have.  It will also notice any new branches Ingo/Linus
  # add to their repo.  Look in .git/config afterwards, the format
  # to add new remotes is easy to figure out.
  git remote update
  #-------------------------
  git merge x86/master
  git merge x86/mm

and apply

[PATCH] x86_64: check if Tom2 is enabled
http://lkml.org/lkml/2008/1/21/20
[PATCH] x86_64: update e820 instead of updating end_pfn v3
http://lkml.org/lkml/2008/1/21/19
[PATCH] x86_32: trim memory by updating e820 v2
http://lkml.org/lkml/2008/1/21/18

YH
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