linux.git, branch vm-bind

drm/i915/vm_bind: Fix vm->vm_bind_mutex and vm->mutex nesting

2022-07-27T14:02:21+00:00

VM_BIND functionality maintain that vm->vm_bind_mutex will never be taken while holding vm->mutex. However, while closing 'vm', vma is destroyed while holding vm->mutex. But vma releasing needs to take vm->vm_bind_mutex in order to delete vma from the vm_bind_list. To avoid this, destroy the vma outside vm->mutex while closing the 'vm'. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Skip vma_lookup for persistent vmas

2022-07-27T14:02:13+00:00

vma_lookup is tied to segment of the object instead of section of VA space. Hence, it do not support aliasing (ie., multiple bindings to the same section of the object). Skip vma_lookup for persistent vmas as it supports aliasing. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: userptr dma-resv changes

2022-07-27T14:02:08+00:00

For persistent (vm_bind) vmas of userptr BOs, handle the user page pinning by using the i915_gem_object_userptr_submit_init() /done() functions Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Handle persistent vmas in execbuf3

2022-07-27T14:02:02+00:00

Handle persistent (VM_BIND) mappings during the request submission in the execbuf3 path. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Add I915_GEM_EXECBUFFER3 ioctl

2022-07-27T14:01:56+00:00

Add new execbuf3 ioctl (I915_GEM_EXECBUFFER3) which only works in vm_bind mode. The vm_bind mode only works with this new execbuf3 ioctl. The new execbuf3 ioctl will not have any execlist support and all the legacy support like relocations etc are removed. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Handle persistent vmas

2022-07-27T14:01:50+00:00

Treat VM_BIND vmas as persistent and handle them during the request submission in the execbuff path. Support eviction by maintaining a list of evicted persistent vmas for rebinding during next submission. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Add out fence support

2022-07-27T14:01:44+00:00

Add support for handling out fence of vm_bind call. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Support private and shared BOs

2022-07-27T14:01:32+00:00

Add uapi allowing user to specify a BO as private to a specified VM during the BO creation. VM private BOs can only be mapped on the specified VM and can't be dma_buf exported. VM private BOs share a single common dma_resv object, hence has a performance advantage requiring a single dma_resv object update in the execbuf path compared to non-private (shared) BOs. Signed-off-by: Niranjana Vishwanathapura

drm/i915/vm_bind: Bind and unbind mappings

2022-07-27T14:01:26+00:00

Bind and unbind the mappings upon VM_BIND and VM_UNBIND calls. Signed-off-by: Niranjana Vishwanathapura Signed-off-by: Prathap Kumar Valsan

drm/i915/vm_bind: Introduce VM_BIND ioctl

2022-07-27T14:01:19+00:00

Add VM_BIND and VM_UNBIND ioctls to bind/unbind a section of an object at the specified GPU virtual addresses. Add I915_PARAM_VM_BIND_VERSION to indicate version of VM_BIND feature supported and I915_VM_CREATE_FLAGS_USE_VM_BIND for UMDs to select the vm_bind mode of binding. Signed-off-by: Niranjana Vishwanathapura