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Re: [patch] pae-2.4.3-C3

To: "Albert D. Cahalan" <acahalan@cs.uml.edu>
Subject: Re: [patch] pae-2.4.3-C3
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 29 Mar 2001 09:14:32 +0200 (CEST)
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
In-Reply-To: <200103290610.f2T6A7s282810@saturn.cs.uml.edu>
Reply-To: <mingo@elte.hu>
Sender: owner-linux-mm@kvack.org

On Thu, 29 Mar 2001, Albert D. Cahalan wrote:

> > the problem is that redzoning is enabled unconditionally, and SLAB has no
> > information about how crutial alignment is in the case of any particular
> > SLAB cache. The CPU generates a general protection fault if in PAE mode a
> > non-16-byte aligned pgd is loaded into %cr3.
>
> How about just fixing the debug code to align things? Sure it wastes a
> bit of memory, but debug code is like that.

redzoning also catches code which assumes specific alignment.

	Ingo

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References:
- Re: [patch] pae-2.4.3-C3
  - From: "Albert D. Cahalan" <acahalan@cs.uml.edu>

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