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[180.214.232.28]) by smtp.gmail.com with ESMTPSA id z22-20020a630a56000000b0043c732e1536sm2333547pgk.45.2022.11.06.02.03.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Nov 2022 02:03:12 -0800 (PST) From: Bagas Sanjaya To: linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Bagas Sanjaya Subject: [PATCH] Documentation: riscv: tableize memory layout Date: Sun, 6 Nov 2022 17:02:40 +0700 Message-Id: <20221106100239.53704-1-bagasdotme@gmail.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=13584; i=bagasdotme@gmail.com; h=from:subject; bh=HGrd3JUcYf98N1p7UhkB1UPQZR83cFVfgAcmvlNv+ek=; b=owGbwMvMwCH2bWenZ2ig32LG02pJDMnpbfZ/r8+oWNW0t3NqzJ01R0Ptl0aZ3DnBGro63ityUX+U fNuljlIWBjEOBlkxRZZJiXxNp3cZiVxoX+sIM4eVCWQIAxenAEzkw3RGhutC6pHrHd8ciX8dFNpr72 gfuDbmkuBDuyWlHKXO25Y1MDP8r9JvfsRZ9uJJjuRnrlcND38st7h5Wewlk8fLN5of7jJ94gYA X-Developer-Key: i=bagasdotme@gmail.com; a=openpgp; fpr=701B806FDCA5D3A58FFB8F7D7C276C64A5E44A1D X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_WEB,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748740691284383958?= X-GMAIL-MSGID: =?utf-8?q?1748740691284383958?= 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 --- Documentation/riscv/vm-layout.rst | 120 +++++++++++++++--------------- 1 file changed, 58 insertions(+), 62 deletions(-) base-commit: 0cdb3579f1ee4c1e55acf8dfb0697b660067b1f8 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 | + +------------------+-----------+------------------+---------+-------------------------------------------------------+