commit ff57cee0519d ("ocl20/runtime: take the first 64KB page table
entries") tries to allocate a bo at 0 offset, but failed to take into
account that something may already be allocated there that it is not
allowed to evict (particularly when not using full-ppgtt separation).
Failure to do so causes all execution to subsequentally fail with
"drm_intel_gem_bo_context_exec() failed: Device or resource busy"Reported-by: Kenneth Johansson <k...@kenjo.org> Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=98647 Contributor: Chris Wilson <ch...@chris-wilson.co.uk> Signed-off-by: Yang Rong <rong.r.y...@intel.com> --- src/intel/intel_driver.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) diff --git a/src/intel/intel_driver.c b/src/intel/intel_driver.c index b8a1b52..3caf737 100644 --- a/src/intel/intel_driver.c +++ b/src/intel/intel_driver.c @@ -137,19 +137,28 @@ return 1; static int intel_driver_context_init(intel_driver_t *driver) { -driver->ctx = drm_intel_gem_context_create(driver->bufmgr); -if (!driver->ctx) - return 0; -driver->null_bo = NULL; + driver->ctx = drm_intel_gem_context_create(driver->bufmgr); + if (!driver->ctx) + return 0; + driver->null_bo = NULL; #ifdef HAS_BO_SET_SOFTPIN -drm_intel_bo *bo = dri_bo_alloc(driver->bufmgr, "null_bo", 64*1024, 4096); -drm_intel_bo_set_softpin_offset(bo, 0); -// don't reuse it, that would make two bo trying to bind to same address, -// which is un-reasonable. -drm_intel_bo_disable_reuse(bo); -driver->null_bo = bo; + drm_intel_bo *bo = dri_bo_alloc(driver->bufmgr, "null_bo", 64*1024, 4096); + drm_intel_bo_set_softpin_offset(bo, 0); + // don't reuse it, that would make two bo trying to bind to same address, + // which is un-reasonable. + drm_intel_bo_disable_reuse(bo); + + drm_intel_bo_map(bo, 1); + *(uint32_t *)bo->virtual = MI_BATCH_BUFFER_END; + drm_intel_bo_unmap(bo); + + if (drm_intel_gem_bo_context_exec(bo, driver->ctx, 0, 0) == 0) { + driver->null_bo = bo; + } else { + drm_intel_bo_unreference(bo); + } #endif -return 1; + return 1; } static void -- 2.1.4 _______________________________________________ Beignet mailing list Beignet@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/beignet
