On 12/1/25 15:00, Natalie Vock wrote:
> Otherwise userspace may be fooled into believing it has a reserved VMID
> when in reality it doesn't, ultimately leading to GPU hangs when SPM is
> used.
>
> Fixes: 80e709ee6ecc ("drm/amdgpu: add option params to enforce process
> isolation between graphics and compute")
> Cc: [email protected]
> Signed-off-by: Natalie Vock <[email protected]>
Reviewed-by: Christian König <[email protected]>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index 61820166efbf6..1479742556991 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -2921,8 +2921,7 @@ int amdgpu_vm_ioctl(struct drm_device *dev, void *data,
> struct drm_file *filp)
> switch (args->in.op) {
> case AMDGPU_VM_OP_RESERVE_VMID:
> /* We only have requirement to reserve vmid from gfxhub */
> - amdgpu_vmid_alloc_reserved(adev, vm, AMDGPU_GFXHUB(0));
> - break;
> + return amdgpu_vmid_alloc_reserved(adev, vm, AMDGPU_GFXHUB(0));
> case AMDGPU_VM_OP_UNRESERVE_VMID:
> amdgpu_vmid_free_reserved(adev, vm, AMDGPU_GFXHUB(0));
> break;
