linux-kernel - Re: [PATCH 1/2] mm: export find_extend_vma and handle_mm

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Message-ID: <20141105120351.GH8354@suse.de>
Date:	Wed, 5 Nov 2014 13:03:51 +0100
From:	Joerg Roedel <jroedel@...e.de>
To:	Oded Gabbay <oded.gabbay@....com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm: export find_extend_vma and handle_mm_fault for
 driver use

Hi Oded, Jesse,

On Wed, Oct 29, 2014 at 11:33:38AM +0200, Oded Gabbay wrote:
> I tested our amdkfd driver with your patches applied (kernel 3.17.1).
> I run OpenCL tests, Aparapi/Sumatra (Java) and OpenMP
> 
> All tests passed and I didn't see any kernel error messages.
> 
> So:
> 
> Tested-by: Oded Gabbay <oded.gabbay@....com>

Thanks for testing Oded. Jesse, the patch looks good to me, except the
task accounting for the page-faults. I'd like to get rid of using
task_struct in the IOMMUv2 driver entirely if possible. Also it is not
really the CPU task causing the faults, but some non-CPU process.

So can you please remove that code and resend the patches with Oded's
Tested-by and Andrew Morton on Cc? I think these patches should go
through the -mm tree.

Thanks,

	Joerg

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