On 16-Aug-26 10:56 PM, Priya Hosur wrote:
This patch adds heavy-weight TLB flush after MES queue eviction/suspension
to fix SVM page migration hangs on gfx1151 with XNACK mode enabled.
v4:
- Dropped userq TLB flush patch per Felix/Lijo feedback: TLB flush is only
needed after batch unmap in amdgpu_userq_unmap_all(), not per-queue unmap
Sorry, that was not the intention. I was thinking there is a unmap_all
API in MES in which case this could be done within FW itself instead.
I believe Alex was also asking to check about batch unmap cases of user
queue. Ex: - amdgpu_eviction_fence_suspend_worker there could still be
inflight transactions similar to KFD case.
Thanks,
Lijo
v3:
- Split into 2 patches per Alex's review
- Added userq TLB flush in amdgpu_userq_unmap_helper() (amdgpu_userq.c)
v2:
- Removed "SDMA" from comment as this affects all in-flight memory
accesses, not just SDMA (Felix Kuehling)
- Added Reviewed-by tag
Priya Hosur (1):
drm/amdkfd: Add TLB flush after MES queue eviction/suspension
.../drm/amd/amdkfd/kfd_device_queue_manager.c | 10 ++++++++++
1 file changed, 10 insertions(+)
