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Subject: Re: [PATCH -rt] update kmap_atomic on !HIGHMEM
From: Daniel Walker <dwalker@mvista.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20061227212555.GA14947@elte.hu>
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	 <20061227212555.GA14947@elte.hu>
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Date: Wed, 27 Dec 2006 16:05:30 -0800
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On Wed, 2006-12-27 at 22:25 +0100, Ingo Molnar wrote:
> * Daniel Walker <dwalker@mvista.com> wrote:
> 
> > I got some scheduling while atomic on x86-64 , and since x86-64 
> > doesn't seem to have HIGHMEM there's no workaround for kmap_atomic() .
> > 
> > This patch adds the same as i386 HIGHMEM for !HIGHMEM.
> 
> the problem is that this does not disable pagefaulting while 
> kmap-atomic. Could you try the patch below, does it solve the assert?
> 


It hasn't crashed after about an hour of stress.. One comment on the
patch tho , the pagefault_enable/pagefault_disable need module exports,
I saw the build complaining about them.

Daniel