From mboxrd@z Thu Jan 1 00:00:00 1970 From: eric@anholt.net (Eric Anholt) Date: Tue, 07 Jun 2016 15:08:38 -0700 Subject: [PATCH v2] arm64: Allow for different DMA and CPU bus offsets In-Reply-To: <20160601084228.GB23375@e104818-lin.cambridge.arm.com> References: <1463576010-115428-1-git-send-email-agraf@suse.de> <20160518132741.GE22378@e104818-lin.cambridge.arm.com> <20160601084228.GB23375@e104818-lin.cambridge.arm.com> Message-ID: <87y46g4pp5.fsf@eliezer.anholt.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Catalin Marinas writes: > On Wed, May 18, 2016 at 02:27:41PM +0100, Catalin Marinas wrote: >> On Wed, May 18, 2016 at 02:53:30PM +0200, Alexander Graf wrote: >> > On arm64, all SoCs we supported so far either have an IOMMU or have bus >> > addresses equal to CPU addresses. >> > >> > However, with the Raspberry Pi 3 coming up, this is no longer true. To >> > allow DMA to work with an AArch64 kernel on those devices, let's allow >> > devices to have DMA offsets again. >> > >> > Signed-off-by: Alexander Graf >> >> We were aware about this issue but we've been waiting for an actual use >> case. I'll queue this for 4.8 (given that RPi3 is not supported by the >> arm64 kernel, I don't see the rush to merge it earlier). > > In case this patch goes in via the arm-soc tree (together with other > RPi3 patches): > > Acked-by: Catalin Marinas Thanks! I've pulled this into my for-next branch. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 818 bytes Desc: not available URL: