From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv2 1/3] arm64: Implement custom mmap functions for dma mapping
Date: Mon, 24 Mar 2014 10:33:03 +0000 [thread overview]
Message-ID: <20140324103302.GB3850@arm.com> (raw)
In-Reply-To: <1394826745-24191-1-git-send-email-lauraa@codeaurora.org>
On Fri, Mar 14, 2014 at 07:52:23PM +0000, Laura Abbott wrote:
> The current dma_ops do not specify an mmap function so maping
> falls back to the default implementation. There are at least
> two issues with using the default implementation:
>
> 1) The pgprot is always pgprot_noncached (strongly ordered)
> memory even with coherent operations
> 2) dma_common_mmap calls virt_to_page on the remapped non-coherent
> address which leads to invalid memory being mapped.
>
> Fix both these issue by implementing a custom mmap function which
> correctly accounts for remapped addresses and sets vm_pg_prot
> appropriately.
>
> Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
I thought there was still some update needed to this series but it turns
out that patch 2/3 was what I was expecting already, so I merged the
first two patches (with minor changes for s/arm64_/__/ prefix). Patch 3
seems to be folded onto my patch already.
Thanks.
--
Catalin
next prev parent reply other threads:[~2014-03-24 10:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-05 20:46 Query on patch to be upstream ? Ritesh Harjani
2014-03-11 12:15 ` Catalin Marinas
2014-03-11 18:04 ` Laura Abbott
2014-03-11 18:26 ` Catalin Marinas
2014-03-12 18:20 ` Laura Abbott
2014-03-13 17:45 ` [PATCH 1/2] arm64: Implement custom mmap functions for dma mapping Laura Abbott
2014-03-13 17:49 ` Catalin Marinas
2014-03-14 1:53 ` Laura Abbott
2014-03-13 17:45 ` [PATCH 2/2] arm64: Support DMA_ATTR_WRITE_COMBINE Laura Abbott
2014-03-13 17:52 ` Catalin Marinas
2014-03-14 2:02 ` Laura Abbott
2014-03-14 19:52 ` [PATCHv2 1/3] arm64: Implement custom mmap functions for dma mapping Laura Abbott
2014-03-24 10:33 ` Catalin Marinas [this message]
[not found] ` <CALk7dXr3cZSkQ6dTUyCjUDStOd6=ghGN9-iO5RQiTfHCciGxLg@mail.gmail.com>
2014-03-28 10:37 ` Catalin Marinas
2014-03-14 19:52 ` [PATCHv2 2/3] arm64: Support DMA_ATTR_WRITE_COMBINE Laura Abbott
2014-03-14 20:24 ` Rob Herring
2014-03-14 23:07 ` Catalin Marinas
2014-03-14 19:52 ` [PATCHv2 3/3] arm64: Use arm64 coherent APIs for non-coherent freeing Laura Abbott
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