Quoting Arkadiusz Hiler (2019-11-06 08:30:37) > On Tue, Nov 05, 2019 at 01:05:20PM +0000, Matthew Auld wrote: > > On Thu, 31 Oct 2019 at 20:40, Chris Wilson <[email protected]> wrote: > > > > > > Quoting Arkadiusz Hiler (2019-10-31 12:40:35) > > > > On Wed, Oct 30, 2019 at 10:22:37PM +0000, Matthew Auld wrote: > > > > > On Tue, 29 Oct 2019 at 16:51, Matthew Auld <[email protected]> > > > > > 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? > > > > > > > > done > > > > > > <6>[ 497.897456] [drm] Intel graphics fake LMEM: [mem > > > 0x100000000-0x13fffffff] > > > <6>[ 497.897459] [drm] Intel graphics fake LMEM IO start: 40000000 > > > <6>[ 497.897461] [drm] Intel graphics fake LMEM size: 40000000 > > > > > > All present. > > > > Arek, > > > > Could we enable DRM_I915_UNSTABLE_FAKE_LMEM in CI? That should give us > > some coverage of the fake local-memory setup on fi-skl-lmem. > > Hey, > > config DRM_I915_UNSTABLE > bool "Enable unstable API for early prototype development" > depends on EXPERT > depends on STAGING > depends on BROKEN # should never be enabled by distros! > > config DRM_I915_UNSTABLE_FAKE_LMEM > bool "Enable the experimental fake lmem" > depends on DRM_I915_UNSTABLE > > AFAIU because of that dependency on CONFIG_BROKEN we cannot just enable > it through .config - we have to edit the value in init/Kconfig[0].
Before the revert last night, CONFIG_BROKEN was already enabled in CI. It's now enabled again. The above output was from CI setting up lmem without extra hackery. -Chris _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
