On Tue, 29 Oct 2019 at 16:51, Matthew Auld <matthew.auld@xxxxxxxxx> wrote: > > Intended for upstream testing so that we can still exercise the LMEM > plumbing and !i915_ggtt_has_aperture paths. Smoke tested on Skull Canyon > device. This works by allocating an intel_memory_region for a reserved > portion of system memory, which we treat like LMEM. For the LMEMBAR we > steal the aperture and 1:1 it map to the stolen region. > > To enable simply set the i915 modparam fake_lmem_start= on the kernel > cmdline with the start of reserved region(see memmap=). The size of the > region we can use is determined by the size of the mappable aperture, so > the size of reserved region should be >= mappable_end. For now we only > enable for the selftests. Depends on CONFIG_DRM_I915_UNSTABLE being > enabled. > > eg. memmap=2G$16G i915.fake_lmem_start=0x400000000 Hi Arek, Would you be able to update the fi-skl-lmem kernel cmd line with s/i915_fake_lmem_start/i915.fake_lmem_start? _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
