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drm/amdkfd: Only apply heavy-weight TLB flush on Aldebaran

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It is to workaround HW bug on other Asics and based on
reverting two commits back:
  drm/amdkfd: Add heavy-weight TLB flush after unmapping
  drm/amdkfd: Add memory sync before TLB flush on unmap

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2021-07-14 14:44:53 -04:00 committed by Alex Deucher
parent 3cd293a78a
commit a50fe70780
1 changed files with 17 additions and 15 deletions
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32
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
View File

@ -1570,23 +1570,25 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
}
mutex_unlock(&p->mutex);
err = amdgpu_amdkfd_gpuvm_sync_memory(dev->kgd, (struct kgd_mem *) mem, true);
if (err) {
pr_debug("Sync memory failed, wait interrupted by user signal\n");
goto sync_memory_failed;
}
if (dev->device_info->asic_family == CHIP_ALDEBARAN) {
err = amdgpu_amdkfd_gpuvm_sync_memory(dev->kgd,
(struct kgd_mem *) mem, true);
if (err) {
pr_debug("Sync memory failed, wait interrupted by user signal\n");
goto sync_memory_failed;
}
/* Flush TLBs after waiting for the page table updates to complete */
for (i = 0; i < args->n_devices; i++) {
peer = kfd_device_by_id(devices_arr[i]);
if (WARN_ON_ONCE(!peer))
continue;
peer_pdd = kfd_get_process_device_data(peer, p);
if (WARN_ON_ONCE(!peer_pdd))
continue;
kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);
/* Flush TLBs after waiting for the page table updates to complete */
for (i = 0; i < args->n_devices; i++) {
peer = kfd_device_by_id(devices_arr[i]);
if (WARN_ON_ONCE(!peer))
continue;
peer_pdd = kfd_get_process_device_data(peer, p);
if (WARN_ON_ONCE(!peer_pdd))
continue;
kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);
}
}
kfree(devices_arr);
return 0;