UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

docs/zh_CN: add riscv vm-layout translation 

Translate .../riscv/vm-layout.rst into Chinese.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/b59965f7f88ea22ec824dc2e92561b018fd370d1.1646108017.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Yanteng Si 2022-03-01 12:18:24 +08:00 committed by Jonathan Corbet
parent f09f6f9b69
commit 125c0d0bec
2 changed files with 68 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/translations/zh_CN/riscv/index.rst
View File

@ -18,6 +18,7 @@ RISC-V 体系结构
:maxdepth: 1
boot-image-header
vm-layout
pmu
patch-acceptance

67
Documentation/translations/zh_CN/riscv/vm-layout.rst Normal file
View File

@ -0,0 +1,67 @@
.. SPDX-License-Identifier: GPL-2.0
.. include:: ../disclaimer-zh_CN.rst
:Original: Documentation/riscv/vm-layout.rst
:翻译:
司延腾 Yanteng Si <siyanteng@loongson.cn>
============================
RISC-V Linux上的虚拟内存布局
============================
:作者: Alexandre Ghiti <alex@ghiti.fr>
:日期: 12 February 2021
这份文件描述了RISC-V Linux内核使用的虚拟内存布局。
32位 RISC-V Linux 内核
======================
RISC-V Linux Kernel SV32
------------------------
TODO
64位 RISC-V Linux 内核
======================
RISC-V特权架构文档指出，64位地址 "必须使第63-48位值都等于第47位，否则将发生缺页异常。"：这将虚
拟地址空间分成两半，中间有一个非常大的洞，下半部分是用户空间所在的地方，上半部分是RISC-V Linux
内核所在的地方。
RISC-V Linux Kernel SV39
------------------------
::
========================================================================================================================
开始地址 | 偏移 | 结束地址 | 大小 | 虚拟内存区域描述
========================================================================================================================
| | | |
0000000000000000 | 0 | 0000003fffffffff | 256 GB | 用户空间虚拟内存，每个内存管理器不同
__________________|____________|__________________|_________|___________________________________________________________
| | | |
0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... 巨大的、几乎64位宽的直到内核映射的-256GB地方
| | | | 开始偏移的非经典虚拟内存地址空洞。
| | | |
__________________|____________|__________________|_________|___________________________________________________________
|
| 内核空间的虚拟内存，在所有进程之间共享:
____________________________________________________________|___________________________________________________________
| | | |
ffffffc6fee00000 | -228 GB | ffffffc6feffffff | 2 MB | fixmap
ffffffc6ff000000 | -228 GB | ffffffc6ffffffff | 16 MB | PCI io
ffffffc700000000 | -228 GB | ffffffc7ffffffff | 4 GB | vmemmap
ffffffc800000000 | -224 GB | ffffffd7ffffffff | 64 GB | vmalloc/ioremap space
ffffffd800000000 | -160 GB | fffffff6ffffffff | 124 GB | 直接映射所有物理内存
fffffff700000000 | -36 GB | fffffffeffffffff | 32 GB | kasan
__________________|____________|__________________|_________|____________________________________________________________
|
|
____________________________________________________________|____________________________________________________________
| | | |
ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF
ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel
__________________|____________|__________________|_________|____________________________________________________________