drm/xe/xe_vm_doc.h

185  * the VM's DMA_RESV_USAGE_KERNEL slot (blocks future jobs / resume compute mode
187  * to execs and compute mode rebind worker. To accomplish this, hold the
213  * until all pending users (jobs or compute mode engines) of the userptr are
219  * Either the next exec (non-compute) or rebind worker (compute mode) will
221  * after the VM dma-resv wait if the VM is in compute mode.
223  * Compute mode
226  * A VM in compute mode enables long running workloads and ultra low latency
231  * are not used when a VM is in compute mode. User fences (TODO: link user fence
422  * evictions, and compute mode rebind worker) in XE.
431  * bind path also acquires this lock in write while the exec / compute mode
436  * during VM binds, execs, and compute mode rebind worker. This lock is also
443  * and the compute mode rebind worker. This lock is also held when an external
452  * 2. A compute mode rebind worker and bind operation with the same VM can't be
459  * compute mode rebind worker with the same VM is executing (vm->lock).
464  * 6. Evictions within a VM can't be happen while a compute mode rebind worker
482  * 2. In non-compute mode, jobs from execs install themselves into the
485  * 3. In non-compute mode, jobs from execs install themselves into the
494  * 6. Every engine using a compute mode VM has a preempt fence in installed into
497  * 7. Every engine using a compute mode VM has a preempt fence in installed into
507  * 2. In non-compute mode, the exection of all jobs from rebinds in execs shall
511  * 3. In non-compute mode, the exection of all jobs from execs shall wait on the
514  * 4. In compute mode, the exection of all jobs from rebinds in the rebind
518  * 5. In compute mode, resumes in rebind worker shall wait on last rebind fence
520  * 6. In compute mode, resumes in rebind worker shall wait on the
527  * non-compute mode execs
529  * 2. New jobs from non-compute mode execs are blocked behind any existing jobs
533  * compute mode
535  * 4. Compute mode engine resumes are blocked behind any existing jobs from