Messages in this thread | | | Date | Mon, 07 Dec 2009 16:51:28 -0800 | From | Yinghai Lu <> | Subject | Re: [PATCH -tip] x86: fix iommu=soft boot option |
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FUJITA Tomonori wrote: > On Wed, 2 Dec 2009 17:07:24 +0900 > FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote: > >> On Tue, 01 Dec 2009 23:55:28 -0800 >> Yinghai Lu <yinghai@kernel.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
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