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From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org, Russell King <linux@armlinux.org.uk>
Cc: Robin Murphy <robin.murphy@arm.com>, linux-kernel@vger.kernel.org
Subject: fixups for the dma_set_mask beahvior change in 5.1
Date: Tue, 21 May 2019 14:47:27 +0200
Message-ID: <20190521124729.23559-1-hch@lst.de> (raw)

Hi all,

in 5.1 I fixed up the DMA mapping API to always accept larger than
required DMA mask.  Except that I forgot about a check in the arm
code that is not required any more, and about the case where a
architecture only supports a 32-bit dma mask, but could potentially
generate large addresses due to offsets for the DMA address.

These two patches should fix up these issues (which were only found by
code inspection).
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Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21 12:47 Christoph Hellwig [this message]
2019-05-21 12:47 ` [PATCH 1/2] dma-mapping: truncate dma masks to what dma_addr_t can hold Christoph Hellwig
2019-05-21 13:04   ` Russell King - ARM Linux admin
2019-05-21 13:15     ` Christoph Hellwig
2019-05-29 12:22       ` Christoph Hellwig
2019-06-14  7:46         ` Christoph Hellwig
2019-06-25  5:54           ` Christoph Hellwig
2019-05-21 12:47 ` [PATCH 2/2] ARM: dma-mapping: allow larger DMA mask than supported Christoph Hellwig
2019-05-21 13:00   ` Russell King - ARM Linux admin
2019-05-21 13:04     ` Christoph Hellwig

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