From: arnd@arndb.de (Arnd Bergmann) Date: Thu, 29 Jul 2010 10:26:55 +0200 Subject: [PATCH 1/2] arm: msm: Add System MMU support. In-Reply-To: <20100729123512Y.fujita.tomonori@lab.ntt.co.jp> References: <20100729123512Y.fujita.tomonori@lab.ntt.co.jp> Message-ID: <201007291026.55928.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thursday 29 July 2010 05:35:48 FUJITA Tomonori wrote: > > > > From what I have been able to tell, the IOMMU interface was written by > > AMD/Intel to allow the kvm code to work with a common IOMMU interface. To > > Don't confuse the IOMMU interface with the DMA API that Arnd > mentioned. > > They are not related at all. Exactly, thanks for the clarification. I also didn't realize that there is now an include/linux/iommu.h file that only describes the PCI SR-IOV interfaces, unlike the generic IOMMU support that we have in your include/linux/dma-mapping.h file. Maybe we should rename linux/iommu.h to something more specific so we can reduce this confusion in the future. Arnd