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Date: Sun, 6 Nov 2022 17:02:40 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org
Cc: Jonathan Corbet <corbet@....net>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Alexandre Ghiti <alexandre.ghiti@...onical.com>,
Bagas Sanjaya <bagasdotme@...il.com>
Subject: [PATCH] Documentation: riscv: tableize memory layout
The memory layout is written as table but it is inside literal code
block, which renders as preformatted text. Write the layout in reST
grid table instead.
Signed-off-by: Bagas Sanjaya <bagasdotme@...il.com>
---
Documentation/riscv/vm-layout.rst | 120 +++++++++++++++---------------
1 file changed, 58 insertions(+), 62 deletions(-)
diff --git a/Documentation/riscv/vm-layout.rst b/Documentation/riscv/vm-layout.rst
index 5b36e45fef60bd..139320e35de81f 100644
--- a/Documentation/riscv/vm-layout.rst
+++ b/Documentation/riscv/vm-layout.rst
@@ -30,70 +30,66 @@ the RISC-V Linux Kernel resides.
RISC-V Linux Kernel SV39
------------------------
-::
-
- ========================================================================================================================
- Start addr | Offset | End addr | Size | VM area description
- ========================================================================================================================
- | | | |
- 0000000000000000 | 0 | 0000003fffffffff | 256 GB | user-space virtual memory, different per mm
- __________________|____________|__________________|_________|___________________________________________________________
- | | | |
- 0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical
- | | | | virtual memory addresses up to the -256 GB
- | | | | starting offset of kernel mappings.
- __________________|____________|__________________|_________|___________________________________________________________
- |
- | Kernel-space virtual memory, shared between all processes:
- ____________________________________________________________|___________________________________________________________
- | | | |
- 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 | direct mapping of all physical memory
- fffffff700000000 | -36 GB | fffffffeffffffff | 32 GB | kasan
- __________________|____________|__________________|_________|____________________________________________________________
- |
- |
- ____________________________________________________________|____________________________________________________________
- | | | |
- ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF
- ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel
- __________________|____________|__________________|_________|____________________________________________________________
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | Start addr | Offset | End addr | Size | VM area description |
+ +==================+=========+==================+=========+==========================================================+
+ | 0000000000000000 | 0 | 0000003fffffffff | 256 GB | user-space virtual memory, different per mm |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | 0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical |
+ | | | | | virtual memory addresses up to the -256 GB |
+ | | | | | starting offset of kernel mappings. |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | Kernel-space virtual memory, shared between all processes: |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | 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 | direct mapping of all physical memory |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | fffffff700000000 | -36 GB | fffffffeffffffff | 32 GB | kasan |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | Identical layout to the 39-bit one from here on: |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
+ | ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel |
+ +------------------+---------+------------------+---------+----------------------------------------------------------+
RISC-V Linux Kernel SV48
------------------------
-::
-
- ========================================================================================================================
- Start addr | Offset | End addr | Size | VM area description
- ========================================================================================================================
- | | | |
- 0000000000000000 | 0 | 00007fffffffffff | 128 TB | user-space virtual memory, different per mm
- __________________|____________|__________________|_________|___________________________________________________________
- | | | |
- 0000800000000000 | +128 TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical
- | | | | virtual memory addresses up to the -128 TB
- | | | | starting offset of kernel mappings.
- __________________|____________|__________________|_________|___________________________________________________________
- |
- | Kernel-space virtual memory, shared between all processes:
- ____________________________________________________________|___________________________________________________________
- | | | |
- 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 | direct mapping of all physical memory
- ffffef8000000000 | -16.5 TB | fffffffeffffffff | 16.5 TB | kasan
- __________________|____________|__________________|_________|____________________________________________________________
- |
- | Identical layout to the 39-bit one from here on:
- ____________________________________________________________|____________________________________________________________
- | | | |
- ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF
- ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel
- __________________|____________|__________________|_________|____________________________________________________________
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | Start addr | Offset | End addr | Size | VM area description |
+ +==================+===========+==================+=========+=======================================================+
+ | 0000000000000000 | 0 | 00007fffffffffff | 128 TB | user-space virtual memory, different per mm |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | 0000800000000000 | +128 TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical |
+ | | | | | virtual memory addresses up to the -128 TB |
+ | | | | | starting offset of kernel mappings. |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | Kernel-space virtual memory, shared between all processes: |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | 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 | direct mapping of all physical memory |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | ffffef8000000000 | -16.5 TB | fffffffeffffffff | 16.5 TB | kasan |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | Identical layout to the 39-bit one from here on: |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | modules, BPF |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
+ | ffffffff80000000 | -2 GB | ffffffffffffffff | 2 GB | kernel |
+ +------------------+-----------+------------------+---------+-------------------------------------------------------+
base-commit: 0cdb3579f1ee4c1e55acf8dfb0697b660067b1f8
--
An old man doll... just what I always wanted! - Clara
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