From: Jason Gunthorpe jgg@mellanox.com
The API is a bit complicated for the uses we actually have, and disucssions for simplifying have come up a number of times.
This small series removes the customizable pfn format and simplifies the return code of hmm_range_fault()
All the drivers are adjusted to process in the simplified format. I would appreciated tested-by's for the two drivers, thanks!
v2: - Move call chain to commit message - Fix typo of HMM_PFN_REQ_FAULT - Move nouveau_hmm_convert_pfn() to nouveau_svm.c - Add acks and tested-bys v1: https://lore.kernel.org/r/0-v1-4eb72686de3c+5062-hmm_no_flags_jgg@mellanox.c...
Cc: Christoph Hellwig hch@lst.de Cc: John Hubbard jhubbard@nvidia.com Cc: Jérôme Glisse jglisse@redhat.com Cc: Ben Skeggs bskeggs@redhat.com To: Ralph Campbell rcampbell@nvidia.com Cc: nouveau@lists.freedesktop.org Cc: Niranjana Vishwanathapura niranjana.vishwanathapura@intel.com Cc: intel-gfx@lists.freedesktop.org Cc: "Kuehling, Felix" Felix.Kuehling@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: "Christian König" christian.koenig@amd.com Cc: "David (ChunMing) Zhou" David1.Zhou@amd.com Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: "Yang, Philip" Philip.Yang@amd.com To: linux-mm@kvack.org
Jason Gunthorpe (5): mm/hmm: make CONFIG_DEVICE_PRIVATE into a select mm/hmm: make hmm_range_fault return 0 or -1 drm/amdgpu: remove dead code after hmm_range_fault() mm/hmm: remove HMM_PFN_SPECIAL mm/hmm: remove the customizable pfn format from hmm_range_fault
Documentation/vm/hmm.rst | 28 ++-- arch/powerpc/Kconfig | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 56 +++---- drivers/gpu/drm/nouveau/Kconfig | 2 +- drivers/gpu/drm/nouveau/nouveau_dmem.c | 27 +--- drivers/gpu/drm/nouveau/nouveau_dmem.h | 3 +- drivers/gpu/drm/nouveau/nouveau_svm.c | 94 ++++++++---- include/linux/hmm.h | 109 +++++--------- mm/Kconfig | 7 +- mm/hmm.c | 185 +++++++++++------------- 10 files changed, 217 insertions(+), 296 deletions(-)