From: Jisheng Zhang <Jisheng.Zhang@synaptics.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net> Cc: linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] Documentation/arm64: add memory layout with 4KB pages + VA39-bit Date: Thu, 30 Sep 2021 18:50:26 +0800 [thread overview] Message-ID: <20210930185026.1609f12e@xhacker.debian> (raw) The 4KB pages + 3 levels (39-bit) combination is also widely used in arm64 world, add the memory layout description for this combination. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> --- Documentation/arm64/memory.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/arm64/memory.rst b/Documentation/arm64/memory.rst index 901cd094f4ec..d1745b570f0c 100644 --- a/Documentation/arm64/memory.rst +++ b/Documentation/arm64/memory.rst @@ -26,6 +26,23 @@ The swapper_pg_dir address is written to TTBR1 and never written to TTBR0. +AArch64 Linux memory layout with 4KB pages + 3 levels (39-bit):: + Start End Size Use + ----------------------------------------------------------------------- + 0000000000000000 0000007fffffffff 512GB user + ffffff8000000000 ffffffbfffffffff 256GB kernel logical memory map + [ffffffb000000000 ffffffbfffffffff] 64GB [kasan shadow region] + ffffffc000000000 ffffffc007ffffff 128MB bpf jit region + ffffffc008000000 ffffffc00fffffff 128MB modules + ffffffc010000000 fffffffdefffffff 253440MB vmalloc + fffffffdf0000000 fffffffdfdffffff 224MB fixed mappings (top down) + fffffffdfe000000 fffffffdfe7fffff 8MB [guard region] + fffffffdfe800000 fffffffdff7fffff 16MB PCI I/O space + fffffffdff800000 fffffffdffffffff 8MB [guard region] + fffffffe00000000 ffffffffefffffff 4GB vmemmap + ffffffff00000000 ffffffffffffffff 4GB [guard region] + + AArch64 Linux memory layout with 4KB pages + 4 levels (48-bit):: Start End Size Use -- 2.33.0
WARNING: multiple messages have this Message-ID (diff)
From: Jisheng Zhang <Jisheng.Zhang@synaptics.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net> Cc: linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] Documentation/arm64: add memory layout with 4KB pages + VA39-bit Date: Thu, 30 Sep 2021 18:50:26 +0800 [thread overview] Message-ID: <20210930185026.1609f12e@xhacker.debian> (raw) The 4KB pages + 3 levels (39-bit) combination is also widely used in arm64 world, add the memory layout description for this combination. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> --- Documentation/arm64/memory.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/arm64/memory.rst b/Documentation/arm64/memory.rst index 901cd094f4ec..d1745b570f0c 100644 --- a/Documentation/arm64/memory.rst +++ b/Documentation/arm64/memory.rst @@ -26,6 +26,23 @@ The swapper_pg_dir address is written to TTBR1 and never written to TTBR0. +AArch64 Linux memory layout with 4KB pages + 3 levels (39-bit):: + Start End Size Use + ----------------------------------------------------------------------- + 0000000000000000 0000007fffffffff 512GB user + ffffff8000000000 ffffffbfffffffff 256GB kernel logical memory map + [ffffffb000000000 ffffffbfffffffff] 64GB [kasan shadow region] + ffffffc000000000 ffffffc007ffffff 128MB bpf jit region + ffffffc008000000 ffffffc00fffffff 128MB modules + ffffffc010000000 fffffffdefffffff 253440MB vmalloc + fffffffdf0000000 fffffffdfdffffff 224MB fixed mappings (top down) + fffffffdfe000000 fffffffdfe7fffff 8MB [guard region] + fffffffdfe800000 fffffffdff7fffff 16MB PCI I/O space + fffffffdff800000 fffffffdffffffff 8MB [guard region] + fffffffe00000000 ffffffffefffffff 4GB vmemmap + ffffffff00000000 ffffffffffffffff 4GB [guard region] + + AArch64 Linux memory layout with 4KB pages + 4 levels (48-bit):: Start End Size Use -- 2.33.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-09-30 10:50 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-30 10:50 Jisheng Zhang [this message] 2021-09-30 10:50 ` [PATCH] Documentation/arm64: add memory layout with 4KB pages + VA39-bit Jisheng Zhang 2021-10-06 17:14 ` Catalin Marinas 2021-10-06 17:14 ` Catalin Marinas 2021-10-08 2:11 ` Jisheng Zhang 2021-10-08 2:11 ` Jisheng Zhang
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210930185026.1609f12e@xhacker.debian \ --to=jisheng.zhang@synaptics.com \ --cc=catalin.marinas@arm.com \ --cc=corbet@lwn.net \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-doc@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=will@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.