On Mon, Jan 30, 2017 at 7:57 AM, Christian König <deathsimple at vodafone.de> wrote: > Hi Dave and Bas, > > Hi Dave and Bas, > > the following set of patches is a proposal for adding support for partial resident textures (PRT) to the amdgpu kernel module. > > The basic idea behind PRT support is that you turn of VM fault reporting and only map parts of a texture into your virtual address space. > > When a shader now tries to sample from a not present page it gets a notification instead of a VM fault and can react gracefully by switch to a different LOD for example. Do we actually need to disable faults? I guess the shader hw probably requires it to get the proper result in the shader? Alex > > On our current available hardware generation you can unfortunately only turn of VM faults globally, but on future generation you can do this on a per page basis. So my proposal is to have a consistent interface over all generations with a per mapping PRT flag, but enable/disable it globally on current hardware when the first/last mapping is made/destroyed. > > An open problem with the proposal is that we don't know when or if we want to add the userspace implementation into radeonsi. > > So price question could you guys use this for radv as well? Or is it sufficient to just write an unit test for it? > > Best regards, > Christian. > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
