From: Chen Zhou <chenzhou10@huawei.com>
To: <rppt@linux.ibm.com>, <catalin.marinas@arm.com>,
<will.deacon@arm.com>, <akpm@linux-foundation.org>,
<ard.biesheuvel@linaro.org>
Cc: <horms@verge.net.au>, <takahiro.akashi@linaro.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kexec@lists.infradead.org>,
<linux-mm@kvack.org>, <wangkefeng.wang@huawei.com>,
Chen Zhou <chenzhou10@huawei.com>
Subject: [PATCH v2 3/3] kdump: update Documentation about crashkernel on arm64
Date: Tue, 9 Apr 2019 15:31:43 +0800 [thread overview]
Message-ID: <20190409073143.75808-4-chenzhou10@huawei.com> (raw)
In-Reply-To: <20190409073143.75808-1-chenzhou10@huawei.com>
Now we support crashkernel=X,[high,low] on arm64, update the
Documentation.
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
---
Documentation/admin-guide/kernel-parameters.txt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 060482d..d5c65e1 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -715,14 +715,14 @@
Documentation/kdump/kdump.txt for an example.
crashkernel=size[KMG],high
- [KNL, x86_64] range could be above 4G. Allow kernel
+ [KNL, x86_64, arm64] range could be above 4G. Allow kernel
to allocate physical memory region from top, so could
be above 4G if system have more than 4G ram installed.
Otherwise memory region will be allocated below 4G, if
available.
It will be ignored if crashkernel=X is specified.
crashkernel=size[KMG],low
- [KNL, x86_64] range under 4G. When crashkernel=X,high
+ [KNL, x86_64, arm64] range under 4G. When crashkernel=X,high
is passed, kernel could allocate physical memory region
above 4G, that cause second kernel crash on system
that require some amount of low memory, e.g. swiotlb
--
2.7.4
prev parent reply other threads:[~2019-04-09 7:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 7:31 [PATCH v2 0/3] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2019-04-09 7:31 ` [PATCH v2 1/3] arm64: kdump: support reserving crashkernel above 4G Chen Zhou
2019-04-09 7:31 ` [PATCH v2 2/3] arm64: kdump: support more than one crash kernel regions Chen Zhou
2019-04-09 7:31 ` Chen Zhou [this message]
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=20190409073143.75808-4-chenzhou10@huawei.com \
--to=chenzhou10@huawei.com \
--cc=akpm@linux-foundation.org \
--cc=ard.biesheuvel@linaro.org \
--cc=catalin.marinas@arm.com \
--cc=horms@verge.net.au \
--cc=kexec@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=rppt@linux.ibm.com \
--cc=takahiro.akashi@linaro.org \
--cc=wangkefeng.wang@huawei.com \
--cc=will.deacon@arm.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