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drm/amdgpu: fix amdgpu_vm_bo_reset_state_machine

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Can't splice the list but need to handle each entry individually.

Otherwise we run into issues after a GPU reset.

Fixes: 4cdbba5a16 ("drm/amdgpu: restructure VM state machine v4")
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jesse Zhang <jesse.zhang@amd.com>
Tested-by: Jesse Zhang <jesse.zhang@amd.com>
Reviewed-by: Sunil Khatri <sunil.khatri@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2026-05-22 11:22:10 +02:00
committed by Alex Deucher
parent c9b2ad100b
commit 989bdec8ca
1 changed files with 14 additions and 3 deletions
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17
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@@ -266,12 +266,23 @@ static void amdgpu_vm_bo_idle(struct amdgpu_vm_bo_base *vm_bo)
*/
static void amdgpu_vm_bo_reset_state_machine(struct amdgpu_vm *vm)
{
struct amdgpu_vm_bo_base *vm_bo, *tmp;
/*
* Don't use list splice here, we need the special handling for the root
* PD and set the moved flag appropriately.
*/
amdgpu_vm_assert_locked(vm);
list_splice_init(&vm->kernel.idle, &vm->kernel.moved);
list_splice_init(&vm->always_valid.idle, &vm->always_valid.moved);
list_for_each_entry_safe(vm_bo, tmp, &vm->kernel.idle, vm_status)
amdgpu_vm_bo_moved(vm_bo);
list_for_each_entry_safe(vm_bo, tmp, &vm->always_valid.idle, vm_status)
amdgpu_vm_bo_moved(vm_bo);
spin_lock(&vm->individual_lock);
list_splice_init(&vm->individual.idle, &vm->individual.moved);
list_for_each_entry_safe(vm_bo, tmp, &vm->individual.idle, vm_status) {
vm_bo->moved = true;
list_move(&vm_bo->vm_status, &vm->individual.moved);
}
spin_unlock(&vm->individual_lock);
}