kernel.git/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h, branch linux-6.14.y

drm/amdkfd: Fix pasid value leak

2025-05-29T09:13:49Z

[ Upstream commit 10e08943caedfb4b0b95933d248503a6f6b9fef6 ] Curret kfd does not allocate pasid values, instead uses pasid value for each vm from graphic driver. So should not prevent graphic driver from releasing pasid values since the values are allocated by graphic driver, not kfd driver anymore. This patch does not stop graphic driver release pasid values. Fixes: 8544374c0f82 ("drm/amdkfd: Have kfd driver use same PASID values from graphic driver") Signed-off-by: Xiaogang Chen Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdkfd: Have kfd driver use same PASID values from graphic driver

2025-05-29T09:13:29Z

[ Upstream commit 8544374c0f82edb285779f21b149826fe2c2977c ] Current kfd driver has its own PASID value for a kfd process and uses it to locate vm at interrupt handler or mapping between kfd process and vm. That design is not working when a physical gpu device has multiple spatial partitions, ex: adev in CPX mode. This patch has kfd driver use same pasid values that graphic driver generated which is per vm per pasid. These pasid values are passed to fw/hardware. We do not need change interrupt handler though more pasid values are used. Also, pasid values at log are replaced by user process pid; pasid values are not exposed to user. Users see their process pids that have meaning in user space. Signed-off-by: Xiaogang Chen Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: remove all KFD fences from the BO on release

2025-05-29T09:13:11Z

[ Upstream commit cb0de06d1b0afb2d0c600ad748069f5ce27730ec ] Remove all KFD BOs from the private dma_resv object. This prevents the KFD from being evict unecessarily when an exported BO is released. Signed-off-by: Christian König Signed-off-by: James Zhu Reviewed-by: Felix Kuehling Reviewed-and-tested-by: James Zhu Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Optimize gfx v9 GPU page fault handling

2024-12-18T17:39:07Z

After GPU page fault, there are lots of page fault interrupts generated at short period even with CAM filter enabled because the fault address is different. Each page fault copy to KFD ih fifo to send event to user space by KFD interrupt worker, this could cause KFD ih fifo overflow while other processes generate events at same time. KFD process is aborted after GPU page fault, we only need one GPU page fault interrupt sent to KFD ih fifo to send memory exception event to user space. Incease KFD ih fifo size to 2 times of IH primary ring size, to handle the burst events case. This patch handle the gfx v9 path, cover retry on/off and CAM filter on/off cases. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher

drm/amdkfd: add an interface to query whether is KFD is active

2024-11-04T16:25:42Z

Add an interface to query whether KFD has any active queues. v2: fix build issues Acked-by: Srinivasan Shanmugam Signed-off-by: Alex Deucher

drm/amdkfd:Add kfd function to config sq perfmon

2024-09-26T21:06:17Z

Expose the interface for kfd to config sq perfmon. Signed-off-by: Feifei Xu Reviewed-by: Hawking Zhang Reviewed-by: Lijo Lazar Reviewed-by: James Zhu Signed-off-by: Alex Deucher

drm/amdgpu: Retire query_utcl2_poison_status callback

2024-08-23T14:53:16Z

Driver switches to interrupt source id to identify utcl2 poison event. polling interface is not needed. Signed-off-by: Hawking Zhang Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher

drm/amdkfd: APIs to stop/start KFD scheduling

2024-08-21T02:07:28Z

Provide amdgpu_amdkfd_stop_sched() for amdgpu to stop KFD scheduling compute work on HIQ. amdgpu_amdkfd_start_sched() resumes the scheduling. When amdgpu_amdkfd_stop_sched is called, KFD will unmap queues from runlist. If users send ioctls to KFD to create queues, they'll be added but those queues won't be mapped to runlist (so not scheduled) until amdgpu_amdkfd_start_sched is called. v2: fix build (Alex) Signed-off-by: Amber Lin Signed-off-by: Alex Deucher

drm/amdkfd: Refactor queue wptr_bo GART mapping

2024-07-23T21:35:04Z

Add helper function kfd_queue_acquire_buffers to get queue wptr_bo reference from queue write_ptr if it is mapped to the KFD node with expected size. Add wptr_bo to structure queue_properties because structure queue is allocated after queue buffers are validated, then we can remove wptr_bo parameter from pqm_create_queue. Rename structure queue wptr_bo_gart to hold wptr_bo reference for GART mapping and umapping. Move MES wptr_bo_gart mapping to init_user_queue, the same location with queue ctx_bo GART mapping. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Alex Deucher

drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer

2024-07-23T21:34:44Z

Pass pointer reference to amdgpu_bo_unref to clear the correct pointer, otherwise amdgpu_bo_unref clear the local variable, the original pointer not set to NULL, this could cause use-after-free bug. Signed-off-by: Philip Yang Reviewed-by: Felix Kuehling Acked-by: Christian König Signed-off-by: Alex Deucher