On 3/23/20 6:14 PM, Jason Gunthorpe wrote:
From: Jason Gunthorpe <j...@mellanox.com>
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-...@ziepe.ca
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(-)
I was able to recompile Karol Herbst's mesa tree and Jerome's SVM tests to
test this with nouveau so for the series you can add,
Tested-by: Ralph Campbell <rcampb...@nvidia.com>
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