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Srinivasan Shanmugam
c8e7e3c221
On GFX11.0.3, earlier SDMA firmware versions issue the PROTECTED_FENCE write from the user VMID (e.g. VMID 8) instead of VMID 0. This causes a GPU VM protection fault when SDMA tries to write the secure fence location, as seen in the UMQ SDMA test (cs-sdma-with-IP-DMA-UMQ) Fixes the below GPU page fault: [ 514.037189] amdgpu 0000:0b:00.0: amdgpu: [gfxhub] page fault (src_id:0 ring:40 vmid:8 pasid:32770) [ 514.037199] amdgpu 0000:0b:00.0: amdgpu: Process pid 0 thread pid 0 [ 514.037205] amdgpu 0000:0b:00.0: amdgpu: in page starting at address 0x00007fff00409000 from client 10 [ 514.037212] amdgpu 0000:0b:00.0: amdgpu: GCVM_L2_PROTECTION_FAULT_STATUS:0x00841A51 [ 514.037217] amdgpu 0000:0b:00.0: amdgpu: Faulty UTCL2 client ID: SDMA0 (0xd) [ 514.037223] amdgpu 0000:0b:00.0: amdgpu: MORE_FAULTS: 0x1 [ 514.037227] amdgpu 0000:0b:00.0: amdgpu: WALKER_ERROR: 0x0 [ 514.037232] amdgpu 0000:0b:00.0: amdgpu: PERMISSION_FAULTS: 0x5 [ 514.037236] amdgpu 0000:0b:00.0: amdgpu: MAPPING_ERROR: 0x0 [ 514.037241] amdgpu 0000:0b:00.0: amdgpu: RW: 0x1 v2: Updated commit message v3: s/gfx11.0.3/sdma 6.0.3/ in patch title (Alex) Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.