Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout v2 | KernelTrap

Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout v2

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From: Arjan van de Ven <arjan@...>

To: Mika Fischer <mika.fischer@...>

Cc: Ingo Molnar <mingo@...>, <yhlu.kernel@...>, Andrew Morton <akpm@...>, linux-kernel@vger.kernel.org <linux-kernel@...>, H. Peter Anvin <hpa@...>, Thomas Gleixner <tglx@...>, Gabriel C <nix.or.die@...>

Subject: Re: [PATCH] x86: mtrr cleanup for converting continuous to discrete layout v2

Date: Monday, April 28, 2008 - 1:50 am

On Mon, 28 Apr 2008 17:28:21 +0200
Mika Fischer <mika.fischer@zoopnet.de> wrote:

quoted text> Arjan van de Ven schrieb:
> > yep one should not touch existing MTRRs. If you run out, tough luck.
> > Thats what we have PAT for.
> > Changing them anyway is a deathtrap with various things,
> > suspend/resume being only one of the nasty cases.
> 
> Hm. I currently have to remove the offending (i.e. overlapping my
> video memory) MTRRs and split them so that they have a hole where my
> video memory is.

I'm not arguing that it sometimes works. It's just a big trap to default enable ;(


quoted text> 
> Ah, so the new X will be able to use the video memory in
> write-combining mode even if I have an MTRR saying this area is
> uncachable or write-back?

yes.
When it gets released...
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Messages in current thread:

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Mon Apr 28, 2:37 am)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Mon Apr 28, 5:06 am)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Mon Apr 28, 3:44 pm)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Mon Apr 28, 4:16 pm)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Mon Apr 28, 6:05 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Eric W. Biederman, (Tue Apr 29, 3:00 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Tue Apr 29, 4:04 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Eric W. Biederman, (Tue Apr 29, 4:29 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Tue Apr 29, 5:57 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Eric W. Biederman, (Tue Apr 29, 6:14 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Thomas Gleixner, (Tue Apr 29, 6:54 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Eric W. Biederman, (Tue Apr 29, 9:16 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Alan Cox, (Wed Apr 30, 5:57 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Ingo Molnar, (Tue Apr 29, 6:09 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Tue Apr 29, 6:18 pm)

[PATCH 1/2] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Tue Apr 29, 5:00 am)

[PATCH 1/2] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Tue Apr 29, 6:52 am)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Tue Apr 29, 11:25 pm)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Thu May 1, 4:00 am)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Thu May 1, 2:57 pm)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Thu May 1, 8:52 pm)

[PATCH] x86: mtrr cleanup for converting continuous to discr..., Yinghai Lu, (Fri May 2, 5:40 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 3:42 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 5:02 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 5:10 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 5:20 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 5:26 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 5:31 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 5:33 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 5:44 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 5:49 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 6:52 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., H. Peter Anvin, (Thu May 1, 6:57 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 7:10 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Randy Dunlap, (Thu May 1, 11:09 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 12:38 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Mika Fischer, (Thu May 1, 8:09 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 12:35 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Mika Fischer, (Thu May 1, 12:59 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 1:40 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Gabriel C, (Thu May 1, 7:45 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 8:06 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Gabriel C, (Thu May 1, 8:29 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 8:35 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Gabriel C, (Thu May 1, 9:18 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Thu May 1, 9:55 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Ingo Molnar, (Wed Apr 30, 8:09 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Randy Dunlap, (Tue Apr 29, 4:46 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 5:54 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Ingo Molnar, (Tue Apr 29, 9:07 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 1:25 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 5:47 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 6:30 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 6:56 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 7:51 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 1:11 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 4:25 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 5:49 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 7:56 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 8:13 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 8:06 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 8:38 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Tue Apr 29, 9:02 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 11:00 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Tue Apr 29, 11:29 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Wed Apr 30, 12:12 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Wed Apr 30, 12:25 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Gabriel C, (Wed Apr 30, 8:04 am)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Yinghai Lu, (Wed Apr 30, 12:26 pm)

Re: [PATCH 1/2] x86: mtrr cleanup for converting continuous ..., Ingo Molnar, (Tue Apr 29, 7:26 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Andrew Morton, (Mon Apr 28, 10:42 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Mon Apr 28, 11:01 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Randy Dunlap, (Mon Apr 28, 6:36 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Mon Apr 28, 6:47 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Ingo Molnar, (Mon Apr 28, 4:15 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Yinghai Lu, (Mon Apr 28, 4:18 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Ingo Molnar, (Mon Apr 28, 4:29 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Ingo Molnar, (Mon Apr 28, 9:08 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Arjan van de Ven, (Mon Apr 28, 9:49 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Mika Fischer, (Mon Apr 28, 11:28 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Arjan van de Ven, (Mon Apr 28, 1:50 am)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Gabriel C, (Mon Apr 28, 12:01 pm)

Re: [PATCH] x86: mtrr cleanup for converting continuous to d..., Mika Fischer, (Mon Apr 28, 12:28 pm)

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