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Wed, 22 Apr 2026 18:00:12 +0000 Content-Type: multipart/alternative; boundary="------------1JT8E06DYQX8S69000hPpREs" Message-ID: <44967ec0-8014-4543-b2a9-70007ba2f2b3@amd.com> Date: Wed, 22 Apr 2026 14:00:10 -0400 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/2] drm/amdgpu: per-PTE MTYPE override for NUMA locality To: Philip Yang , amd-gfx@lists.freedesktop.org Cc: Felix.Kuehling@amd.com, christian.koenig@amd.com, Kent.Russell@amd.com, Andrew.Martin@amd.com References: <20260420133705.3721315-1-Philip.Yang@amd.com> Content-Language: en-US From: Philip Yang In-Reply-To: <20260420133705.3721315-1-Philip.Yang@amd.com> X-ClientProxiedBy: YT4PR01CA0245.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:10f::18) To DM4PR12MB5149.namprd12.prod.outlook.com (2603:10b6:5:390::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR12MB5149:EE_|CH0PR12MB8506:EE_ X-MS-Office365-Filtering-Correlation-Id: 4ab22e94-8eb8-4e35-03bb-08dea098ffb8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit ping... On 2026-04-20 09:37, Philip Yang wrote: > This series refactors the NUMA-aware MTYPE override for VM page table > entries on GFX 9.4.3 APUs (MI300A). Previously, the override was applied > once per contiguous range in the centralized amdgpu_vm_pte_update_flags(), > which missed scattered pages (pages_addr path) that could span multiple > NUMA nodes. > > Patch 1 moves amdgpu_device_check_iommu_direct_map() earlier in device > init so that ram_is_direct_mapped is available when gmc_funcs are > configured during IP early init. > > Patch 2 moves the MTYPE override into the individual CPU and SDMA update > backends at per-PTE granularity, enabling correct NUMA-local MTYPE > selection for scattered pages. It also hoists the eligibility checks > (APU type, IP version, direct-mapped RAM, multi-NUMA) from runtime to > init time via a new gmc.override_pte flag, avoiding repeated checks on > every PTE update. > > Philip Yang (2): > drm/amdgpu: Move amdgpu_device_check_iommu_direct_map() earlier > drm/amdgpu: move VM PTE MTYPE override to per-PTE granularity > > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +-- > drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 2 ++ > drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +- > drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 6 ++-- > drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c | 11 ++++++- > drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 9 ------ > drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 11 ++++++- > drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 35 +++++++++------------ > 8 files changed, 44 insertions(+), 37 deletions(-) > --------------1JT8E06DYQX8S69000hPpREs Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit ping...

On 2026-04-20 09:37, Philip Yang wrote:
This series refactors the NUMA-aware MTYPE override for VM page table
entries on GFX 9.4.3 APUs (MI300A). Previously, the override was applied
once per contiguous range in the centralized amdgpu_vm_pte_update_flags(),
which missed scattered pages (pages_addr path) that could span multiple
NUMA nodes.

Patch 1 moves amdgpu_device_check_iommu_direct_map() earlier in device
init so that ram_is_direct_mapped is available when gmc_funcs are
configured during IP early init.

Patch 2 moves the MTYPE override into the individual CPU and SDMA update
backends at per-PTE granularity, enabling correct NUMA-local MTYPE
selection for scattered pages. It also hoists the eligibility checks
(APU type, IP version, direct-mapped RAM, multi-NUMA) from runtime to
init time via a new gmc.override_pte flag, avoiding repeated checks on
every PTE update.

Philip Yang (2):
  drm/amdgpu: Move amdgpu_device_check_iommu_direct_map() earlier
  drm/amdgpu: move VM PTE MTYPE override to per-PTE granularity

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  |  5 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h     |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c      |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h      |  6 ++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm_cpu.c  | 11 ++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c   |  9 ------
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm_sdma.c | 11 ++++++-
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c       | 35 +++++++++------------
 8 files changed, 44 insertions(+), 37 deletions(-)

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