Re: [PATCH v2 02/12] drm/xe: Make usm.asid_to_vm allocation use GFP_NOWAIT

["Summers, Stuart" <stuart.summers@intel.com>]

On Tue, 2025-11-04 at 11:56 -0800, Matthew Brost wrote:
> Ensure the asid_to_vm lookup is reclaim-safe so it can be performed
> during TLB invalidations, which is necessary for context-based TLB
> invalidation support.
> 
> Signed-off-by: Matthew Brost <matthew.brost@intel.com>

Reviewed-by: Stuart Summers <stuart.summers@intel.com>

Although best to merge this with the full series of course...

> ---
>  drivers/gpu/drm/xe/xe_vm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
> index 00f3520dec38..84f4c8f1be33 100644
> --- a/drivers/gpu/drm/xe/xe_vm.c
> +++ b/drivers/gpu/drm/xe/xe_vm.c
> @@ -1632,7 +1632,7 @@ struct xe_vm *xe_vm_create(struct xe_device
> *xe, u32 flags, struct xe_file *xef)
>                 down_write(&xe->usm.lock);
>                 err = xa_alloc_cyclic(&xe->usm.asid_to_vm, &asid, vm,
>                                       XA_LIMIT(1, XE_MAX_ASID - 1),
> -                                     &xe->usm.next_asid,
> GFP_KERNEL);
> +                                     &xe->usm.next_asid,
> GFP_NOWAIT);
>                 up_write(&xe->usm.lock);
>                 if (err < 0)
>                         goto err_close;