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@vger.kernel.org Cc: Matthew Brost matthew.brost@intel.com Cc: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com Signed-off-by: Maarten Lankhorst dev@lankhorst.se

Reviewed-by: Himal Prasad Ghimiray himal.prasad.ghimiray@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; }