On 19 June 2015 at 21:51, Martin Peres <martin.pe...@free.fr> wrote: > On 19/06/2015 13:02, Alexandre Courbot wrote: >> >> New revision of this patchset that prevents VRAM objects from being >> allocated on VRAM-less systems like Tegra. This is required for Mesa >> to work on such systems. >> >> Changes since v2: >> - Use vram_size to detect systems without VRAM and set the correct >> domain instead of expecting each chip to set its domain explicitly. > > > This question may have been asked a ton of times, but what is the difference > with the nvac (Ion)? > > Would the nvac have some reserved memory for its usage by the bios which > would then be used as "VRAM"? PFB on the dGPU IGPs has facilities to fake VRAM from an area of "stolen" system memory reserved by the SBIOS. GK20A/GM20B do not do this, and require direct (or, via a mmu, whatever) access to system memory.
Ben. > > In any case, the patchseries sounds simple-enough to be maintainable. > > _______________________________________________ > Nouveau mailing list > nouv...@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/nouveau _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
