From: joro@8bytes.org (Joerg Roedel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] iommu/dma: Restore scatterlist offsets correctly
Date: Tue, 5 Apr 2016 14:59:26 +0200 [thread overview]
Message-ID: <20160405125926.GI17838@8bytes.org> (raw)
In-Reply-To: <c14a93373a34633f6db89214ca2ddf69b0eaa1c3.1457637385.git.robin.murphy@arm.com>
On Thu, Mar 10, 2016 at 07:28:12PM +0000, Robin Murphy wrote:
> With the change to stashing just the IOVA-page-aligned remainder of the
> CPU-page offset rather than the whole thing, the failure path in
> __invalidate_sg() also needs tweaking to account for that in the case of
> differing page sizes where the two offsets may not be equivalent.
> Similarly in __finalise_sg(), lest the architecture-specific wrappers
> later get the wrong address for cache maintenance on sync or unmap.
>
> Fixes: 164afb1d85b8 ("iommu/dma: Use correct offset in map_sg")
> Reported-by: Magnus Damm <damm+renesas@opensource.se>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Cc: stable at ver.kernel.org # v4.4+ ?
Joerg
next prev parent reply other threads:[~2016-04-05 12:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 19:28 [PATCH 1/2] iommu/dma: Restore scatterlist offsets correctly Robin Murphy
2016-03-10 19:28 ` [PATCH 2/2] iommu/dma: Implement scatterlist segment merging Robin Murphy
2016-04-05 11:16 ` [PATCH 1/2] iommu/dma: Restore scatterlist offsets correctly Robin Murphy
2016-04-05 12:59 ` Joerg Roedel [this message]
2016-04-05 13:11 ` Robin Murphy
2016-04-05 13:33 ` Joerg Roedel
2016-04-05 14:06 ` Robin Murphy
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