[PATCH] drm/xe/svm: Fix regression disallowing 64K SVM migration

[Ghimiray, Himal Prasad]

On 21-05-2025 14:31, Maarten Lankhorst wrote:
> When changing the condition from >= SZ_64K, it was changed to <= SZ_64K.
> This disallows migration of 64K, which is the exact minimum allowed.
> 
> Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/5057
> Fixes: a9ac0fa455b0 ("drm/xe: Strict migration policy for atomic SVM faults")
> Cc: stable at vger.kernel.org
> Cc: Matthew Brost <matthew.brost at intel.com>
> Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
> Signed-off-by: Maarten Lankhorst <dev at lankhorst.se>

Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>

> ---
>   drivers/gpu/drm/xe/xe_svm.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_svm.c b/drivers/gpu/drm/xe/xe_svm.c
> index 4432685936ed4..a7386334d48c4 100644
> --- a/drivers/gpu/drm/xe/xe_svm.c
> +++ b/drivers/gpu/drm/xe/xe_svm.c
> @@ -820,7 +820,7 @@ bool xe_svm_range_needs_migrate_to_vram(struct xe_svm_range *range, struct xe_vm
>   		return false;
>   	}
>   
> -	if (preferred_region_is_vram && range_size <= SZ_64K && !supports_4K_migration(vm->xe)) {
> +	if (preferred_region_is_vram && range_size < SZ_64K && !supports_4K_migration(vm->xe)) {
>   		drm_warn(&vm->xe->drm, "Platform doesn't support SZ_4K range migration\n");
>   		return false;
>   	}