Le mar. 16 mai 2023 à 13:45, Robin Murphy <robin.murphy@xxxxxxx> a écrit : > > On 2023-05-16 10:53, Nicolas Chauvet wrote: ... > > For what it worth, I've tried to test this serie with "grate patches" > > (1) rebased on top on 6.4-rc2, that would make use of the tegra-gart. > > That was on PAZ00 (with only 512M of RAM and 96M CMA still allocated). > > Unfortunately, this lead to the following errors with display problems > > (no character displayed in lxt-terminal and etc) > > Thanks for testing - it's quite possible I've made a silly mistake > somewhere, but just to double-check, does the same happen with the > existing driver if you boot with "tegra-gart.gart_debug=1" (or at least > enable the parameter via sysfs before the DRM driver gets going)? Using echo 1 > /sys/module/tegra_gart/parameters/gart_debug shows the same messages and the same artefacts (missing refreshed window content). Using "echo 0 > /sys/module/tegra_gart/parameters/gart_debug" revert back to normal... [ 7661.026139] tegra-mc 7000f000.memory-controller: gart: Page entry is in-use [ 7661.033189] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* mapping failed 4294967274 262144 [ 7661.042197] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* failed size 262144: -12 [ 7661.589552] tegra-mc 7000f000.memory-controller: gart: Page entry is in-use [ 7661.596690] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* mapping failed 4294967274 262144 [ 7661.605865] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* failed size 262144: -12 [ 7662.078823] tegra-mc 7000f000.memory-controller: gart: Page entry is in-use [ 7662.085987] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* mapping failed 4294967274 262144 [ 7662.095137] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* failed size 262144: -12 [ 7662.123677] tegra-mc 7000f000.memory-controller: gart: Page entry is in-use [ 7662.130758] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* mapping failed 4294967274 262144 [ 7662.140100] [drm:tegra_bo_gart_map_locked [tegra_drm]] *ERROR* failed size 262144: -12
