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drm/amdkfd: check if vm ready in svm map and unmap to gpu

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Don't map or unmap svm range to gpu if vm is not ready for updates.

Why: DRM entity may already be killed when the svm worker try to
update gpu vm.

Signed-off-by: YuanShang <YuanShang.Mao@amd.com>
Reviewed-by: Philip Yang <philip.yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 55f8e366c326980174a4f2b9501b524d8eb25135)
This commit is contained in:
YuanShang
2026-03-26 18:27:30 +08:00
committed by Alex Deucher
parent 045e0ff208
commit d0f5711fa1
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/amd/amdkfd/kfd_svm.c
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@@ -1366,6 +1366,12 @@ svm_range_unmap_from_gpu(struct amdgpu_device *adev, struct amdgpu_vm *vm,
pr_debug("CPU[0x%llx 0x%llx] -> GPU[0x%llx 0x%llx]\n", start, last,
gpu_start, gpu_end);
if (!amdgpu_vm_ready(vm)) {
pr_debug("VM not ready, canceling unmap\n");
return -EINVAL;
}
return amdgpu_vm_update_range(adev, vm, false, true, true, false, NULL, gpu_start,
gpu_end, init_pte_value, 0, 0, NULL, NULL,
fence);
@@ -1443,6 +1449,11 @@ svm_range_map_to_gpu(struct kfd_process_device *pdd, struct svm_range *prange,
pr_debug("svms 0x%p [0x%lx 0x%lx] readonly %d\n", prange->svms,
last_start, last_start + npages - 1, readonly);
if (!amdgpu_vm_ready(vm)) {
pr_debug("VM not ready, canceling map\n");
return -EINVAL;
}
for (i = offset; i < offset + npages; i++) {
uint64_t gpu_start;
uint64_t gpu_end;