Re: Nouveau crashes in 4.6-rc on arm64

From	Alexandre Courbot <acourbot@nvidia.com>
Newsgroups	linux.kernel
Subject	Re: Nouveau crashes in 4.6-rc on arm64
Date	2016-04-11 10:00 +0200
Message-ID	<rmEVl-2eN-17@gated-at.bofh.it> (permalink)
References	<rlgLo-3f5-5@gated-at.bofh.it> <rlwwO-6Tj-3@gated-at.bofh.it> <rlJDH-8aP-7@gated-at.bofh.it> <rmEsi-225-5@gated-at.bofh.it>
Organization	NVIDIA

Show all headers | View raw

On 04/11/2016 04:22 PM, Alexandre Courbot wrote:
> ... or maybe we could just unconditionally sync all buffers and let the
> DMA API abstract this away. My concern is that on coherent architectures
> we would still need to loop over all the pages for nothing, as I don't
> think the loop (see e.g. nouveau_bo_sync_for_cpu in nouveau_bo.c) can be
> optimized away by the compiler.

Looking at the code it actually turns out we are already calling the 
sync functions on coherent buses anyway, so maybe we have little reasons 
to keep this at all?

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: Nouveau crashes in 4.6-rc on arm64 Alexandre Courbot <acourbot@nvidia.com> - 2016-04-08 06:50 +0200
  Re: Nouveau crashes in 4.6-rc on arm64 Ilia Mirkin <imirkin@alum.mit.edu> - 2016-04-08 08:30 +0200
  Re: Nouveau crashes in 4.6-rc on arm64 Robin Murphy <robin.murphy@arm.com> - 2016-04-08 20:50 +0200
    Re: Nouveau crashes in 4.6-rc on arm64 Alexandre Courbot <acourbot@nvidia.com> - 2016-04-11 09:30 +0200
      Re: Nouveau crashes in 4.6-rc on arm64 Alexandre Courbot <acourbot@nvidia.com> - 2016-04-11 10:00 +0200

csiph-web