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drm/amdgpu: add VM generation token

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Instead of using the VRAM lost counter add a 64bit token which indicates
if a context or job is still valid to use.

Should the VRAM be lost or the page tables need re-creation the token will
change indicating that userspace needs to act and re-create the contexts
and re-submit the work.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2023-04-19 15:17:57 +02:00
committed by Alex Deucher
parent 55bf196f60
commit f88e295e90
7 changed files with 37 additions and 7 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h
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@@ -47,7 +47,7 @@ struct amdgpu_ctx {
struct amdgpu_ctx_mgr *mgr;
unsigned reset_counter;
unsigned reset_counter_query;
uint32_t vram_lost_counter;
uint64_t generation;
spinlock_t ring_lock;
struct amdgpu_ctx_entity *entities[AMDGPU_HW_IP_NUM][AMDGPU_MAX_ENTITY_NUM];
bool preamble_presented;