From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dma-mapping: support non-consistent DMA attribute
Date: Wed, 25 Feb 2015 10:36:20 +0000 [thread overview]
Message-ID: <20150225103620.GV8656@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1424810703-20382-1-git-send-email-drake@endlessm.com>
On Tue, Feb 24, 2015 at 02:45:03PM -0600, Daniel Drake wrote:
> Currently when arm_dma_mmap() is called, vm_page_prot is reset
> according to DMA attributes. Currently, writecombine is the
> only attribute supported; any other configuration will map uncached
> memory.
>
> Add support for the non-consistent attribute so that cachable memory
> can be mapped into userspace via the dma_mmap_attrs() API.
What is your use-case for this?
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FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.
prev parent reply other threads:[~2015-02-25 10:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 20:45 [PATCH] ARM: dma-mapping: support non-consistent DMA attribute Daniel Drake
2015-02-25 10:24 ` Arnd Bergmann
2015-02-25 13:58 ` Daniel Drake
2015-02-25 14:18 ` Russell King - ARM Linux
2015-02-25 14:30 ` Daniel Drake
2015-02-25 14:42 ` Russell King - ARM Linux
2015-02-25 15:21 ` Daniel Drake
2015-02-25 16:31 ` Jasper St. Pierre
2015-02-25 17:25 ` Russell King - ARM Linux
2015-02-25 17:27 ` Jasper St. Pierre
2015-02-25 10:36 ` Russell King - ARM Linux [this message]
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