On Wed, Aug 26, 2015 at 2:52 PM, <jglisse at redhat.com> wrote: > So this is only build tested as i am away from hardware right now. > Idea is to provide reliable way to check if swiotlb is in use for > a device or not. It seems swiotlb_nr_tbl() is no longer reliable > for that. > > Please test.
Even with these patches applied, we are still ending up in the ttm_dma_populate() path in the amdgpu driver rather than ttm_pool_populate() even with a hw iommu enabled. Any idea? The attached patch gives us a 20% performance boost in some apps, but obviously has potential issues if a hw iommu is not present. Alex > > Cheers, > Jérôme Glisse > _______________________________________________ > dri-devel mailing list > dri-devel at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-drm-amdgpu-use-ttm_pool-instead-of-ttm_dma.patch Type: text/x-patch Size: 1320 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20150831/e403de42/attachment.bin>
