Re: [PATCH 0/2] Make the vmwgfx driver reasonably DMA-API compliant
On Mon, Nov 04, 2013 at 05:57:37AM -0800, Thomas Hellstrom wrote: These patches makes the vmwgfx driver use the DMA API to obtain valid device addresses rather than blindly using physical addresses. The main motivation is to be able to use a virtual IOMMU in the future. Ooooh. Neat! Are there any RFC patches available? Other TTM drivers typically map pages one by one rather than using a scatter-gather list, but since we can benefit from having a single dma address region set up by the IOMMU, we use a scatter-gather list instead. Finally to be able to handle all the dma mapping modes, we locally extend the scatter-gather list page iterator to handle also the direct physical- and coherent cases. Finally, the TTM DMA page pool is enabled also when the Intel IOMMU is active -- November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231iu=/4140/ostg.clktrk -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[PATCH 0/2] Make the vmwgfx driver reasonably DMA-API compliant
These patches makes the vmwgfx driver use the DMA API to obtain valid device addresses rather than blindly using physical addresses. The main motivation is to be able to use a virtual IOMMU in the future. Other TTM drivers typically map pages one by one rather than using a scatter-gather list, but since we can benefit from having a single dma address region set up by the IOMMU, we use a scatter-gather list instead. Finally to be able to handle all the dma mapping modes, we locally extend the scatter-gather list page iterator to handle also the direct physical- and coherent cases. Finally, the TTM DMA page pool is enabled also when the Intel IOMMU is active -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
Re: [PATCH 0/2] Make the vmwgfx driver reasonably DMA-API compliant
On 11/04/2013 05:30 PM, Konrad Rzeszutek Wilk wrote: On Mon, Nov 04, 2013 at 05:57:37AM -0800, Thomas Hellstrom wrote: These patches makes the vmwgfx driver use the DMA API to obtain valid device addresses rather than blindly using physical addresses. The main motivation is to be able to use a virtual IOMMU in the future. Ooooh. Neat! Are there any RFC patches available? Nope, not yet. Thanks, Thomas -- Android is increasing in popularity, but the open development platform that developers love is also attractive to malware creators. Download this white paper to learn more about secure code signing practices that can help keep Android apps secure. http://pubads.g.doubleclick.net/gampad/clk?id=65839951iu=/4140/ostg.clktrk -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel