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 --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;