[Intel-gfx] [PATCH 08/16] drm/i915/vm_bind: Support persistent vma activeness tracking

[Andi Shyti]

Hi Niranjana,

On Tue, Sep 27, 2022 at 11:19:10PM -0700, Niranjana Vishwanathapura wrote:
> Do not use i915_vma activeness tracking for persistent vmas.
> 
> As persistent vmas are part of working set for each execbuf
> submission on that address space (VM), a persistent vma is
> active if the VM active. As vm->root_obj->base.resv will be
> updated for each submission on that VM, it correctly
> represent whether the VM is active or not.
> 
> Add i915_vm_is_active() and i915_vm_sync() functions based
> on vm->root_obj->base.resv with DMA_RESV_USAGE_BOOKKEEP
> usage. dma-resv fence list will be updated with this usage
> during each submission with this VM in the new execbuf3
> ioctl path.
> 
> Update i915_vma_is_active(), i915_vma_sync() and the
> __i915_vma_unbind_async() functions to properly handle
> persistent vmas.
> 
> Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura at intel.com>

Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com>

Andi