diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index dcc92131488e..58735446d783 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -678,20 +678,22 @@ static int nouveau_range_fault(struct nouveau_svmm *svmm, range.end = notifier->notifier.interval_tree.last + 1; while (true) { - if (time_after(jiffies, timeout)) { + long remaining = timeout - jiffies; + + /* + * The HMM timeout only bounds retries while HMM is walking and + * faulting the range. This fault is handled by a kernel worker, + * so fatal signals from the faulting process cannot stop an + * endless stream of invalidations here. + */ + if (time_after_eq(jiffies, timeout)) { ret = -EBUSY; goto out; } - range.notifier_seq = mmu_interval_read_begin(range.notifier); - mmap_read_lock(mm); - ret = hmm_range_fault(&range); - mmap_read_unlock(mm); - if (ret) { - if (ret == -EBUSY) - continue; + ret = hmm_range_fault_unlocked_timeout(&range, remaining); + if (ret) goto out; - } mutex_lock(&svmm->mutex); if (mmu_interval_read_retry(range.notifier,