NVIDIA/open-gpu-kernel-modules
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This commit is contained in:
Maneet Singh
2025-08-04 11:15:02 -07:00
parent d890313300
commit 307159f262
1315 changed files with 477791 additions and 279973 deletions
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15
kernel-open/nvidia/nv-p2p.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: Copyright (c) 2011-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-FileCopyrightText: Copyright (c) 2011-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
@@ -132,11 +132,16 @@ struct nvidia_p2p_page {
} registers;
} nvidia_p2p_page_t;
#define NVIDIA_P2P_PAGE_TABLE_VERSION 0x00010002
#define NVIDIA_P2P_PAGE_TABLE_VERSION 0x00020000
#define NVIDIA_P2P_PAGE_TABLE_VERSION_COMPATIBLE(p) \
NVIDIA_P2P_VERSION_COMPATIBLE(p, NVIDIA_P2P_PAGE_TABLE_VERSION)
/*
* Page Table Flags
*/
#define NVIDIA_P2P_PAGE_TABLE_FLAGS_CPU_CACHEABLE 0x1
typedef
struct nvidia_p2p_page_table {
uint32_t version;
@@ -144,6 +149,7 @@ struct nvidia_p2p_page_table {
struct nvidia_p2p_page **pages;
uint32_t entries;
uint8_t *gpu_uuid;
uint32_t flags;
} nvidia_p2p_page_table_t;
/*
@@ -153,6 +159,9 @@ struct nvidia_p2p_page_table {
*
* This API only supports pinned, GPU-resident memory, such as that provided
* by cudaMalloc().
* This API does not support Coherent Driver-based Memory Management(CDMM) mode.
* CDMM allows coherent GPU memory to be managed by the driver and not the OS.
* This is done by the driver not onlining the memory as a NUMA node.
*
* This API may sleep.
*
@@ -201,7 +210,7 @@ int nvidia_p2p_get_pages( uint64_t p2p_token, uint32_t va_space,
* accessible to a third-party device. The pages will persist until
* explicitly freed by nvidia_p2p_put_pages_persistent().
*
* Persistent GPU memory mappings are not supported on PowerPC,
* Persistent GPU memory mappings are not supported on
* MIG-enabled devices and vGPU.
*
* This API only supports pinned, GPU-resident memory, such as that provided