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Message-ID: <84144f020809040033h6872ecfdlfb7d7cdb57621b0d@mail.gmail.com>
Date: Thu, 4 Sep 2008 10:33:54 +0300
From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Steve VanDeBogart" <vandebo-lkml@nerdbox.net>
Subject: Re: [uml-devel] [PATCH 5/6] slab: Annotate slab
Cc: user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org,
       "Paul E. McKenney" <paulmck@us.ibm.com>, "Ingo Molnar" <mingo@elte.hu>,
       dkegel@google.com, jiayingz@google.com
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Hi Steve,

On Wed, Sep 3, 2008 at 6:42 PM, Steve VanDeBogart
<vandebo-lkml@nerdbox.net> wrote:
> But which bits of a slab object should be marked as initialized at
> kmem_cache_alloc() time?  We can't mark all of them as initialized
> because the constructor may not initialize all of them (in fact, I've
> programmatically confirmed that there are constructors that don't
> initialize all the bytes of an object).  The only place to get the
> information of interest is to mark all bytes uninitialized and then
> run the constructor on the memory region.

Aah, indeed. We should fix kmemcheck as well then.

                      Pekka