From: Jason Gunthorpe <jgg@xxxxxxxxxxxx> This is v2 of the first simple series with a few additional patches of little adjustments. This needs an additional patch to the hmm tester: diff --git a/tools/testing/selftests/vm/hmm-tests.c b/tools/testing/selftests/vm/hmm-tests.c index 033a12c7ab5b6d..da15471a2bbf9a 100644 --- a/tools/testing/selftests/vm/hmm-tests.c +++ b/tools/testing/selftests/vm/hmm-tests.c @@ -1274,7 +1274,7 @@ TEST_F(hmm2, snapshot) /* Check what the device saw. */ m = buffer->mirror; ASSERT_EQ(m[0], HMM_DMIRROR_PROT_ERROR); - ASSERT_EQ(m[1], HMM_DMIRROR_PROT_NONE); + ASSERT_EQ(m[1], HMM_DMIRROR_PROT_ERROR); ASSERT_EQ(m[2], HMM_DMIRROR_PROT_ZERO | HMM_DMIRROR_PROT_READ); ASSERT_EQ(m[3], HMM_DMIRROR_PROT_READ); ASSERT_EQ(m[4], HMM_DMIRROR_PROT_WRITE); v2 changes: - Simplify and rename the flags, rework hmm_vma_walk_test in patch 2 (CH) - Adjust more comments in patch 3 (CH, Ralph) - Put the ugly boolean logic into a function in patch 3 (CH) - Update commit message of patch 4 (CH) - Adjust formatting in patch 5 (CH) Patches 6, 7, 8 are new v1: https://lore.kernel.org/r/20200320164905.21722-1-jgg@xxxxxxxx Jason Gunthorpe (9): mm/hmm: remove pgmap checking for devmap pages mm/hmm: return the fault type from hmm_pte_need_fault() mm/hmm: remove unused code and tidy comments mm/hmm: remove HMM_FAULT_SNAPSHOT mm/hmm: remove the CONFIG_TRANSPARENT_HUGEPAGE #ifdef mm/hmm: use device_private_entry_to_pfn() mm/hmm: do not unconditionally set pfns when returning EBUSY mm/hmm: do not set pfns when returning an error code mm/hmm: return error for non-vma snapshots Documentation/vm/hmm.rst | 12 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +- drivers/gpu/drm/nouveau/nouveau_svm.c | 2 +- include/linux/hmm.h | 109 +-------- mm/hmm.c | 312 ++++++++++-------------- 5 files changed, 133 insertions(+), 304 deletions(-) -- 2.25.2
