Synchronous translation from upstream commit 9d19f2b5256e
("Documentation: riscv: Add sv48 description to VM layout")
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
.../translations/zh_CN/riscv/vm-layout.rst | 37 +++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/Documentation/translations/zh_CN/riscv/vm-layout.rst b/Documentation/translations/zh_CN/riscv/vm-layout.rst
index 585cb89317a3..91884e2dfff8 100644
--- a/Documentation/translations/zh_CN/riscv/vm-layout.rst
+++ b/Documentation/translations/zh_CN/riscv/vm-layout.rst
@@ -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
+ __________________|____________|__________________|_________|____________________________________________________________--
2.20.1