From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, anup@brainfault.org, heiko@sntech.de,
guoren@kernel.org, mick@ics.forth.gr,
alexandre.ghiti@canonical.com, bhe@redhat.com, vgoyal@redhat.com,
dyoung@redhat.com, corbet@lwn.net, Conor.Dooley@microchip.com
Cc: kexec@lists.infradead.org, linux-doc@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
crash-utility@redhat.com, huanyi.xj@alibaba-inc.com,
heinrich.schuchardt@canonical.com, k-hagio-ab@nec.com,
hschauhan@nulltrace.org, yixun.lan@gmail.com,
Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH V5 5/6] riscv: crash_core: Export kernel vm layout, phys_ram_base
Date: Tue, 2 Aug 2022 20:18:17 +0800 [thread overview]
Message-ID: <20220802121818.2201268-6-xianting.tian@linux.alibaba.com> (raw)
In-Reply-To: <20220802121818.2201268-1-xianting.tian@linux.alibaba.com>
These infos are needed by the kdump crash tool. Since these values change
from time to time, it is preferable to export them via vmcoreinfo than to
change the crash's code frequently.
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
.../admin-guide/kdump/vmcoreinfo.rst | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst
index 8419019b6a88..6b76284a503c 100644
--- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
+++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
@@ -595,3 +595,34 @@ X2TLB
-----
Indicates whether the crashed kernel enabled SH extended mode.
+
+RISCV64
+=======
+
+VA_BITS
+-------
+
+The maximum number of bits for virtual addresses. Used to compute the
+virtual memory ranges.
+
+PAGE_OFFSET
+-----------
+
+Indicates the virtual kernel start address of direct-mapped RAM region.
+
+phys_ram_base
+-------------
+
+Indicates the start physical RAM address.
+
+MODULES_VADDR|MODULES_END|VMALLOC_START|VMALLOC_END|VMEMMAP_START|VMEMMAP_END
+-----------------------------------------------------------------------------
+KASAN_SHADOW_START|KASAN_SHADOW_END|KERNEL_LINK_ADDR|ADDRESS_SPACE_END
+----------------------------------------------------------------------
+
+Used to get the correct ranges:
+ MODULES_VADDR ~ MODULES_END : Kernel module space.
+ VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
+ VMEMMAP_START ~ VMEMMAP_END : vmemmap region, used for struct page array.
+ KASAN_SHADOW_START ~ KASAN_SHADOW_END : kasan shadow space.
+ KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END : Kernel link and BPF space.
--
2.17.1
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2022-08-02 12:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-02 12:18 [PATCH V5 0/6] RISC-V fixups to work with crash tool Xianting Tian
2022-08-02 12:18 ` [PATCH V5 1/6] RISC-V: use __smp_processor_id() instead of smp_processor_id() Xianting Tian
2022-08-09 21:10 ` Conor.Dooley
2022-08-02 12:18 ` [PATCH V5 2/6] RISC-V: Add arch_crash_save_vmcoreinfo support Xianting Tian
2022-08-02 12:18 ` [PATCH V5 3/6] riscv: Add modules to virtual kernel memory layout dump Xianting Tian
2022-08-02 12:18 ` [PATCH V5 4/6] RISC-V: Fixup getting correct current pc Xianting Tian
2022-08-09 21:13 ` Conor.Dooley
2022-08-09 21:14 ` Conor.Dooley
2022-08-02 12:18 ` Xianting Tian [this message]
2022-08-09 21:20 ` [PATCH V5 5/6] riscv: crash_core: Export kernel vm layout, phys_ram_base Conor.Dooley
2022-08-10 12:00 ` Xianting Tian
2022-08-11 3:06 ` Bagas Sanjaya
2022-08-11 3:37 ` Xianting Tian
2022-08-02 12:18 ` [PATCH V5 6/6] RISC-V: Fixup schedule out issue in machine_crash_shutdown() Xianting Tian
2022-08-09 21:20 ` Conor.Dooley
2022-08-09 6:58 ` [PATCH V5 0/6] RISC-V fixups to work with crash tool Xianting Tian
2022-08-09 21:24 ` Conor.Dooley
2022-08-11 2:54 ` Xianting Tian
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=20220802121818.2201268-6-xianting.tian@linux.alibaba.com \
--to=xianting.tian@linux.alibaba.com \
--cc=Conor.Dooley@microchip.com \
--cc=alexandre.ghiti@canonical.com \
--cc=anup@brainfault.org \
--cc=aou@eecs.berkeley.edu \
--cc=bhe@redhat.com \
--cc=corbet@lwn.net \
--cc=crash-utility@redhat.com \
--cc=dyoung@redhat.com \
--cc=guoren@kernel.org \
--cc=heiko@sntech.de \
--cc=heinrich.schuchardt@canonical.com \
--cc=hschauhan@nulltrace.org \
--cc=huanyi.xj@alibaba-inc.com \
--cc=k-hagio-ab@nec.com \
--cc=kexec@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=mick@ics.forth.gr \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=vgoyal@redhat.com \
--cc=yixun.lan@gmail.com \
/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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).