linux-kernel - Re: [PATCH 1/2] kmemcheck v3

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Message-ID: <84144f020802080339o5f9442f7obc0a1de0bd688b93@mail.gmail.com>
Date:	Fri, 8 Feb 2008 13:39:32 +0200
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Andi Kleen" <andi@...stfloor.org>
Cc:	"Vegard Nossum" <vegard.nossum@...il.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Richard Knutsson" <ricknu-0@...dent.ltu.se>,
	"Christoph Lameter" <clameter@....com>
Subject: Re: [PATCH 1/2] kmemcheck v3

Hi Andi,

On Feb 8, 2008 2:10 PM, Andi Kleen <andi@...stfloor.org> wrote:
> It's probably tricky; there are all kinds of hidden page faults
> on x86 on data structures allocated as pages (e.g. GDT, LDT [which
> is sometimes kmalloc too], stack etc.)

Aah, I see. We can annotate those callers to disable the page faulting
but maybe that's not practical, dunno. Perhaps it's not such a big
problem to track slab objects only as those contain most of the
interesting ones anyway...
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