invalidate_start
.invalidate_start = xe_vma_userptr_invalidate_start,
invalidate_start(cache, cblock, block, bio);
bool (*invalidate_start)(struct mmu_interval_notifier *interval_sub,
WARN_ON_ONCE(ops->invalidate_start && !ops->invalidate_finish);
if (interval_sub->ops->invalidate_start) {
ret = interval_sub->ops->invalidate_start(interval_sub,
if (interval_sub->ops->invalidate_start) {
ret = interval_sub->ops->invalidate_start(interval_sub,