Cross-subsystem Changes: - Includes gvt-gt-next-2021-01-18 + header check fix for GVT Driver Changes: - Fix for #2955: Clear potentially malicious register state before executing clear residuals security mitigation (Chris) - Fixes that lead to marking per-engine-reset as supported on Gen7 (Chris) - Remove per-client stats from debugfs/i915_gem_objects) (Tvrtko, Chris) - Add arbitration check before semaphore wait (Chris) - Apply interactive priority to explicit flip fences (Chris) - Make GEM errors non-fatal by default to help capturing logs during development (Chris) - Fix object page offset within a region in error capture (CQ, Matt A) - Close race between enable_breadcrumbs and cancel_breadcrumbs (Chris) - Almagamate clflushes on suspend/freeze to speed up S/R (Chris) - Protect used framebuffers from casual eviction (Chris) - Fix the sgt.pfn sanity check (Kui, Matt A) - Reduce locking around i915_request.lock and ctx->engines_mutex (Chris) - Simplify tracking for engine->fw_active and stats.active (Chris) - Constrain pool objects by mapping type (Chris, Matt A) - Use shrinkable status for unknown swizzle quirks (Chris) - Do not suspend bonded requests if one hangs (Chris) - Restore "Skip over completed active execlists" optimization (Chris) - Move stolen node into GEM object union (Chris) . Split gem_create into own file (Matt A) - Convert object_create into object_init in LMEM region code (Matt A) - Reduce test_and_set_bit to set_bit in i915_request_submit() (Chris) - Mark up protected uses of 'i915_request_completed' (Chris) - Remove extraneous inline modifiers (Chris) - Add function to define defaults for GuC/HuC enable (John) - Improve code locality by moving closer to single user (Matt A, Chris) - Compiler warning fixes (Matt A, Chris) - Selftest / CI improvements (Chris)