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drm/amdgpu: re-order and document VM code

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Re-order fields in the VM structure and try to improve the
documentation a bit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2025-08-27 11:45:45 +02:00 committed by Alex Deucher
parent 930595df25
commit df99f6d112
1 changed files with 24 additions and 6 deletions
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30
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
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@ -349,12 +349,16 @@ struct amdgpu_vm {
/* Memory statistics for this vm, protected by status_lock */
struct amdgpu_mem_stats stats[__AMDGPU_PL_NUM];
/*
* The following lists contain amdgpu_vm_bo_base objects for either
* PDs, PTs or per VM BOs. The state transits are:
*
* evicted -> relocated (PDs, PTs) or moved (per VM BOs) -> idle
*/
/* Per-VM and PT BOs who needs a validation */
struct list_head evicted;
/* BOs for user mode queues that need a validation */
struct list_head evicted_user;
/* PT BOs which relocated and their parent need an update */
struct list_head relocated;
@ -364,15 +368,29 @@ struct amdgpu_vm {
/* All BOs of this VM not currently in the state machine */
struct list_head idle;
/*
* The following lists contain amdgpu_vm_bo_base objects for BOs which
* have their own dma_resv object and not depend on the root PD. Their
* state transits are:
*
* evicted_user or invalidated -> done
*/
/* BOs for user mode queues that need a validation */
struct list_head evicted_user;
/* regular invalidated BOs, but not yet updated in the PT */
struct list_head invalidated;
/* BO mappings freed, but not yet updated in the PT */
struct list_head freed;
/* BOs which are invalidated, has been updated in the PTs */
struct list_head done;
/*
* This list contains amdgpu_bo_va_mapping objects which have been freed
* but not updated in the PTs
*/
struct list_head freed;
/* contains the page directory */
struct amdgpu_vm_bo_base root;
struct dma_fence *last_update;