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/linux-6.15/Documentation/gpu/amdgpu/
H A Damdgpu-glossary.rst38 page table used by the GPU kernel driver. It remaps system resources
39 (memory or MMIO space) into the GPU's address space so the GPU can access
41 provided an MMU that the GPU could use to get a contiguous view of
42 scattered pages for DMA. The MMU has since moved on to the GPU, but the
52 GPU Virtual Memory. This is the GPU's MMU. The GPU supports multiple
54 allow the GPU to remap VRAM and system resources into GPU virtual address
55 spaces for use by the GPU kernel driver and applications using the GPU.
56 These provide memory protection for different applications using the GPU.
61 use by the GPU. These addresses can be mapped into the "GART" GPUVM page
H A Ddebugging.rst2 GPU Debugging
8 To aid in debugging GPU virtual memory related problems, the driver supports a
11 `vm_fault_stop` - If non-0, halt the GPU memory controller on a GPU page fault.
13 `vm_update_mode` - If non-0, use the CPU to update GPU page tables rather than
14 the GPU.
20 If you see a GPU page fault in the kernel log, you can decode it to figure
46 The GPU virtual address that caused the fault comes next.
48 The client ID indicates the GPU block that caused the fault.
70 an invalid page (PERMISSION_FAULTS = 0x3) at GPU virtual address
72 descriptor state to determine what caused the GPU page fault.
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H A Ddriver-misc.rst5 GPU Product Information
8 Information about the GPU can be obtained on certain cards
61 Discrete GPU Info
70 GPU Memory Usage Information
126 GPU SmartShift Information
129 GPU SmartShift information via sysfs
H A Dthermal.rst2 GPU Power/Thermal Controls and Monitoring
11 GPU sysfs Power State Interfaces
14 GPU power controls are exposed via sysfs files.
137 If it's enabled, that means that the GPU is free to enter into GFXOFF mode as
143 Read it to check current GFXOFF's status of a GPU::
148 - 0: GPU is in GFXOFF state, the gfx engine is powered down.
170 interval the GPU was in GFXOFF mode. *Only supported in vangogh*
H A Ddriver-core.rst5 GPU Hardware Structure
17 the SoC itself rather than specific IPs. E.g., things like GPU resets
20 An APU contains more than just CPU and GPU, it also contains all of
22 components are shared between the CPU, platform, and the GPU (e.g.,
23 SMU, PSP, etc.). Specific components (CPU, GPU, etc.) usually have
29 With respect to the GPU, we have the following major IPs:
37 different IPs on the GPU get the memory (VRAM or system memory).
38 It also provides the support for per process GPU virtual address
42 This is the interrupt controller on the GPU. All of the IPs feed
62 various things including paging and GPU page table updates. It's also
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/linux-6.15/Documentation/gpu/rfc/
H A Dgpusvm.rst4 GPU SVM Section
26 CPU without a virtual address to free up GPU memory.
32 * GPU page table invalidation, which requires a GPU virtual address, is
34 * GPU fault side
47 migration policy requiring GPU access to occur in GPU memory.
60 * GPU pagetable locking
88 * Concurrent GPU faults
93 * No expected GPU SVM changes required.
96 * Multi-GPU support
99 * Ideally can be done with little to no changes to GPU SVM.
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H A Di915_vm_bind.rst8 objects (BOs) or sections of a BOs at specified GPU virtual addresses on a
10 mappings) will be persistent across multiple GPU submissions (execbuf calls)
30 * Support capture of persistent mappings in the dump upon GPU error.
96 newer VM_BIND mode, the VM_BIND mode with GPU page faults and possible future
108 In future, when GPU page faults are supported, we can potentially use a
199 Allows compute UMD to directly submit GPU jobs instead of through execbuf
208 to GPU via vm_bind interface.
210 GPU page faults
212 GPU page faults when supported (in future), will only be supported in the
222 relevant with upcoming GPU on-demand page fault support.
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/linux-6.15/Documentation/devicetree/bindings/display/msm/
H A Dgmu.yaml111 - description: GPU CX clock
112 - description: GPU AXI clock
145 - description: GPU CX clock
146 - description: GPU AXI clock
148 - description: GPU AHB clock
212 - description: GPU AHB clock
214 - description: GPU CX clock
215 - description: GPU AXI clock
248 - description: GPU AHB clock
250 - description: GPU CX clock
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H A Dgpu.yaml111 help bring the GPU out of secure mode.
134 control the power for the GPU.
161 description: GPU Core clock
163 description: GPU Interface clock
165 description: GPU Memory clock
167 description: GPU Memory Interface clock
171 description: GPU 3D engine clock
175 description: GPU RB Core Power Reduction clock
199 description: GPU Core clock
201 description: GPU Interface clock
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/linux-6.15/Documentation/admin-guide/perf/
H A Dnvidia-pmu.rst58 In this config, the PMU captures GPU ATS translated or EGM traffic from the GPU.
73 * Count event id 0x0 from the GPU/CPU connected with socket 0::
119 * Count event id 0x0 from the GPU connected with socket 0::
123 * Count event id 0x0 from the GPU connected with socket 1::
127 * Count event id 0x0 from the GPU connected with socket 2::
131 * Count event id 0x0 from the GPU connected with socket 3::
172 traffic from remote GPU and PCIE devices.
241 * : GPU :<--NVLink-->: Grace :<---CNVLink--->: Grace :<--NVLink-->: GPU : *
252 GMEM = GPU Memory (e.g. HBM)
263 | Destination | |GPU ATS |GPU Not-ATS| | Socket-B | Socket-B |
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/linux-6.15/drivers/gpu/drm/virtio/
H A DKconfig3 tristate "Virtio GPU driver"
11 This is the virtual GPU driver for virtio. It can be used with
17 bool "Virtio GPU driver modesetting support"
21 Enable modesetting support for virtio GPU driver. This can be
22 disabled in cases where only "headless" usage of the GPU is
/linux-6.15/Documentation/driver-api/
H A Dedac.rst209 GPU DF / GPU Node -> EDAC MC
210 GPU UMC -> EDAC CSROW
211 GPU UMC channel -> EDAC CHANNEL
237 mc2 |- GPU card[0] => node 0(mc1), node 1(mc2)
239 mc4 |- GPU card[1] => node 0(mc3), node 1(mc4)
255 GPU card 1 # Each MI200 GPU has 2 nodes/mcs
279 ├── mc 2 # GPU node 1 == mc2
280 │   ├── .. # each GPU has total 64 GB
282 GPU card 2
288 GPU card 3
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/linux-6.15/Documentation/devicetree/bindings/gpu/
H A Dvivante,gc.yaml7 title: Vivante GPU
9 description: Vivante GPU core devices
34 - description: GPU core clock
35 - description: Shader clock (only required if GPU has feature PIPE_3D)
36 - description: AHB/slave interface clock (only required if GPU can gate
H A Darm,mali-bifrost.yaml7 title: ARM Mali Bifrost GPU
33 - const: arm,mali-bifrost # Mali Bifrost GPU model/revision is fully discoverable
38 - const: arm,mali-valhall-jm # Mali Valhall GPU model/revision is fully discoverable
43 - const: arm,mali-valhall-jm # Mali Valhall GPU model/revision is fully discoverable
53 - description: GPU interrupt
101 The dynamic power consumption of the GPU is
/linux-6.15/Documentation/driver-api/thermal/
H A Dnouveau_thermal.rst14 This driver allows to read the GPU core temperature, drive the GPU fan and
28 In order to protect the GPU from overheating, Nouveau supports 4 configurable
34 The GPU will be downclocked to reduce its power dissipation;
36 The GPU is put on hold to further lower power dissipation;
38 Shut the computer down to protect your GPU.
44 The default value for these thresholds comes from the GPU's vbios. These
/linux-6.15/Documentation/translations/zh_CN/mm/
H A Dhmm.rst15 提供基础设施和帮助程序以将非常规内存（设备内存，如板上 GPU 内存）集成到常规内核路径中，其
20 必不可少，其中 GPU、DSP 或 FPGA 用于代表进程执行各种计算。
32 具有大量板载内存（几 GB）的设备（如 GPU）历来通过专用驱动程序特定 API 管理其内存。这会
40 具体来说，这意味着想要利用像 GPU 这样的设备的代码需要在通用分配的内存（malloc、mmap
56 序员干预的情况下利用 GPU 和其他设备。某些编译器识别的模式仅适用于共享地址空间。对所有
72 另一个严重的因素是带宽有限（约 32GBytes/s，PCIE 4.0 和 16 通道）。这比最快的 GPU
93 缓冲区池）并在其中写入 GPU 特定命令以执行更新（取消映射、缓存失效和刷新等）。这不能通
/linux-6.15/drivers/vfio/pci/nvgrace-gpu/
H A DKconfig3 tristate "VFIO support for the GPU in the NVIDIA Grace Hopper Superchip"
7 VFIO support for the GPU in the NVIDIA Grace Hopper Superchip is
8 required to assign the GPU device to userspace using KVM/qemu/etc.
/linux-6.15/Documentation/gpu/
H A Dmsm-crash-dump.rst7 Following a GPU hang the MSM driver outputs debugging information via
35 ID of the GPU that generated the crash formatted as
39 The current value of RBBM_STATUS which shows what top level GPU
50 GPU address of the ringbuffer.
76 GPU address of the buffer object.
91 GPU memory region.
H A Dnouveau.rst4 drm/nouveau NVIDIA GPU Driver
15 driver, responsible for managing NVIDIA GPU hardware at the kernel level.
16 NVKM provides a unified interface for handling various GPU architectures.
/linux-6.15/drivers/gpu/drm/amd/amdkfd/
H A DKconfig7 bool "HSA kernel driver for AMD GPU devices"
13 Enable this if you want to use HSA features on AMD GPU devices.
29 bool "HSA kernel driver support for peer-to-peer for AMD GPU devices"
33 the PCIe bus. This can improve performance of multi-GPU compute
/linux-6.15/arch/arm64/boot/dts/qcom/
H A Dmsm8996-v3.0.dtsi13 * This revision seems to have differ GPU CPR
14 * parameters, GPU frequencies and some differences
16 * the GPU. Funnily enough, it's simpler to make it an
/linux-6.15/arch/arm/boot/dts/rockchip/
H A Drk3288-veyron-mickey.dts86 * and don't let the GPU go faster than 400 MHz.
103 * the CPU and the GPU.
139 /* At very hot, don't let GPU go over 300 MHz */
180 /* After 1st level throttle the GPU down to as low as 400 MHz */
187 * Slightly after we throttle the GPU, we'll also make sure that
189 * throttle the CPU lower than 1.4 GHz due to GPU heat--we'll
200 /* When hot, GPU goes down to 300 MHz */
206 /* When really hot, don't let GPU go _above_ 300 MHz */
/linux-6.15/Documentation/devicetree/bindings/iommu/
H A Darm,smmu.yaml419 - description: GPU memnoc_gfx clock
421 - description: GPU ahb clock
423 - description: GPU cx_gmu clock
424 - description: GPU hub_cx_int clock
425 - description: GPU hub_aon clock
499 - description: GPU memory bus clock
526 - description: GPU HUB clock
529 - description: GPU SNoC bus clock
530 - description: GPU AHB clock
557 - description: GPU SNoC bus clock
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/linux-6.15/Documentation/ABI/testing/
H A Dsysfs-driver-panthor-profiling9 1: Enable GPU cycle measurements for running jobs.
10 2: Enable GPU timestamp sampling for running jobs.
/linux-6.15/drivers/gpu/drm/qxl/
H A DKconfig3 tristate "QXL virtual GPU"
12 QXL virtual GPU for Spice virtualization desktop integration.

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