docs/zh_CN: riscv: Update the translation of vm-layout.rst to 5.19-rc1

Synchronous translation from upstream commit 9d19f2b525
("Documentation: riscv: Add sv48 description to VM layout")

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Wu XiangCheng <bobwxc@email.cn>
Link: https://lore.kernel.org/r/10cd6a241a0266d1d19ee5f0b2177d7d14d17ed2.1654685338.git.zhoubinbin@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Binbin Zhou 2022-06-08 19:08:21 +08:00 committed by Jonathan Corbet
parent 1a5b8aa25f
commit f41c74af10
1 changed files with 37 additions and 0 deletions

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@ -6,6 +6,7 @@
:翻译:
司延腾 Yanteng Si <siyanteng@loongson.cn>
Binbin Zhou <zhoubinbin@loongson.cn>
============================
RISC-V Linux上的虚拟内存布局
@ -65,3 +66,39 @@ RISC-V Linux Kernel SV39
ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF
ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel
__________________|____________|__________________|_________|____________________________________________________________
RISC-V Linux Kernel SV48
------------------------
::
========================================================================================================================
开始地址 | 偏移 | 结束地址 | 大小 | 虚拟内存区域描述
========================================================================================================================
| | | |
0000000000000000 | 0 | 00007fffffffffff | 128 TB | 用户空间虚拟内存,每个内存管理器不同
__________________|____________|__________________|_________|___________________________________________________________
| | | |
0000800000000000 | +128 TB | ffff7fffffffffff | ~16M TB | ... 巨大的、几乎64位宽的直到内核映射的-128TB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:
____________________________________________________________|___________________________________________________________
| | | |
ffff8d7ffee00000 | -114.5 TB | ffff8d7ffeffffff | 2 MB | fixmap
ffff8d7fff000000 | -114.5 TB | ffff8d7fffffffff | 16 MB | PCI io
ffff8d8000000000 | -114.5 TB | ffff8f7fffffffff | 2 TB | vmemmap
ffff8f8000000000 | -112.5 TB | ffffaf7fffffffff | 32 TB | vmalloc/ioremap space
ffffaf8000000000 | -80.5 TB | ffffef7fffffffff | 64 TB | 直接映射所有物理内存
ffffef8000000000 | -16.5 TB | fffffffeffffffff | 16.5 TB | kasan
__________________|____________|__________________|_________|____________________________________________________________
|
| 从此处开始与39-bit布局相同
____________________________________________________________|____________________________________________________________
| | | |
ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF
ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel
__________________|____________|__________________|_________|____________________________________________________________