From mboxrd@z Thu Jan  1 00:00:00 1970
From: joro@8bytes.org (joro at 8bytes.org)
Date: Mon, 18 Aug 2014 16:07:30 +0200
Subject: [PATCH v5 1/1] iommu-api: Add map_sg/unmap_sg functions
In-Reply-To: <53EA472B.3020900@codeaurora.org>
References: <1407797150-515-1-git-send-email-ohaugan@codeaurora.org>
 <1407797150-515-2-git-send-email-ohaugan@codeaurora.org>
 <871tsm5vcn.fsf@nvidia.com>
 <CAF6AEGvZUanVtPxAt76+AAdOaNwyMJ3cmcJ1srsEYBeG7ELkBQ@mail.gmail.com>
 <53EA472B.3020900@codeaurora.org>
Message-ID: <20140818140730.GC9809@8bytes.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Tue, Aug 12, 2014 at 09:56:11AM -0700, Olav Haugan wrote:
> On 8/12/2014 3:48 AM, Rob Clark wrote:
> > iirc, one plan for 'flags' was some sort of DONT_FLUSH_TLB flag for
> > drivers which wanted to map/unmap N buffers with a single flush at the
> > end.  There might have been some other usages envisioned.
> 
> Yes, that was the original intent of the flags for now. I am sure we can
> find other uses for this in the future.

Do you have anything else in mind already besides the DONT_FLUSH_TLB
flag?

How is the IOTLB supposed to be flushed when this flag is used?


	Joerg