On Thu, Feb 24, 2022 at 8:18 PM Yanteng Si <siyanteng01@xxxxxxxxx> wrote: > > Translate .../riscv/vm-layout.rst into Chinese. > > Signed-off-by: Yanteng Si <siyanteng@xxxxxxxxxxx> Reviewed-by: Alex Shi <alexs@xxxxxxxxxx> > --- > .../translations/zh_CN/riscv/index.rst | 1 + > .../translations/zh_CN/riscv/vm-layout.rst | 67 +++++++++++++++++++ > 2 files changed, 68 insertions(+) > create mode 100644 Documentation/translations/zh_CN/riscv/vm-layout.rst > > diff --git a/Documentation/translations/zh_CN/riscv/index.rst b/Documentation/translations/zh_CN/riscv/index.rst > index bbf5d7b3777a..614cde0c0997 100644 > --- a/Documentation/translations/zh_CN/riscv/index.rst > +++ b/Documentation/translations/zh_CN/riscv/index.rst > @@ -18,6 +18,7 @@ RISC-V 体系结构 > :maxdepth: 1 > > boot-image-header > + vm-layout > pmu > patch-acceptance > > diff --git a/Documentation/translations/zh_CN/riscv/vm-layout.rst b/Documentation/translations/zh_CN/riscv/vm-layout.rst > new file mode 100644 > index 000000000000..585cb89317a3 > --- /dev/null > +++ b/Documentation/translations/zh_CN/riscv/vm-layout.rst > @@ -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@xxxxxxxxxxx> > + > +============================ > +RISC-V Linux上的虚拟内存布局 > +============================ > + > +:作者: Alexandre Ghiti <alex@xxxxxxxx> > +: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 > + __________________|____________|__________________|_________|____________________________________________________________ > -- > 2.27.0 >
