diff mbox series

[v3,3/4] nouveau: remove useless SVM range check

Message ID 20200304001339.8248-4-rcampbell@nvidia.com (mailing list archive)
State New, archived
Headers show
Series nouveau/hmm: map pages after migration | expand

Commit Message

Ralph Campbell March 4, 2020, 12:13 a.m. UTC
When nouveau processes GPU faults, it checks to see if the fault address
falls within the "unmanaged" range which is reserved for fixed allocations
instead of addresses chosen by the core mm code. If start is greater than
or equal to svmm->unmanaged.limit, then limit will also be greater than
svmm->unmanaged.limit which is greater than svmm->unmanaged.start and the
start = max_t(u64, start, svmm->unmanaged.limit) will change nothing.
Just remove the useless lines of code.

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
---
 drivers/gpu/drm/nouveau/nouveau_svm.c | 3 ---
 1 file changed, 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index c567526b75b8..8dfa5cb74826 100644
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -663,9 +663,6 @@  nouveau_svm_fault(struct nvif_notify *notify)
 		limit = start + (ARRAY_SIZE(args.phys) << PAGE_SHIFT);
 		if (start < svmm->unmanaged.limit)
 			limit = min_t(u64, limit, svmm->unmanaged.start);
-		else
-		if (limit > svmm->unmanaged.start)
-			start = max_t(u64, start, svmm->unmanaged.limit);
 		SVMM_DBG(svmm, "wndw %016llx-%016llx", start, limit);
 
 		mm = svmm->notifier.mm;