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Message-ID: <4B1DA310.7050408@kernel.org> Date: Mon, 07 Dec 2009 16:51:28 -0800 From: Yinghai Lu <yinghai@...nel.org> To: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> CC: mingo@...e.hu, linux-kernel@...r.kernel.org Subject: Re: [PATCH -tip] x86: fix iommu=soft boot option FUJITA Tomonori wrote: > On Wed, 2 Dec 2009 17:07:24 +0900 > FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> wrote: > >> On Tue, 01 Dec 2009 23:55:28 -0800 >> Yinghai Lu <yinghai@...nel.org> wrote: >> >>>>>>> amd 64 systems that >>>>>>> 1. do not have AGP >>>>>>> 2. do not have IOMMU >>>>>>> 3. mem > 4g >>>>>>> 4. BIOS do not allocate correct gart in NB. >>>>>>> will leave them to use SWIOTLB forcely. >>>>>> As I asked earlier, can you tell me what dma ops such system is >>>>>> supposed to use? >>>>> gart_dma_ops >>>> How does gart_dma_ops work on systems without IOMMU? >>> ? >> If a system doesn't have IOMMU, what does gart_dma_ops do? > > Ping? gart can do hw translation... YH -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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