From: Chen Zhou <chenzhou10@huawei.com>
To: <catalin.marinas@arm.com>, <will.deacon@arm.com>,
<akpm@linux-foundation.org>, <rppt@linux.ibm.com>,
<ard.biesheuvel@linaro.org>, <takahiro.akashi@linaro.org>
Cc: wangkefeng.wang@huawei.com, Chen Zhou <chenzhou10@huawei.com>,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] kdump: update Documentation about crashkernel on arm64
Date: Wed, 3 Apr 2019 11:05:46 +0800 [thread overview]
Message-ID: <20190403030546.23718-4-chenzhou10@huawei.com> (raw)
In-Reply-To: <20190403030546.23718-1-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 27a5f8c..6772f4f 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
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next prev parent reply other threads:[~2019-04-03 2:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-03 3:05 [PATCH 0/3] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2019-04-03 3:05 ` [PATCH 1/3] arm64: kdump: support reserving crashkernel above 4G Chen Zhou
2019-04-04 14:46 ` Mike Rapoport
2019-04-05 3:03 ` Chen Zhou
2019-04-03 3:05 ` [PATCH 2/3] arm64: kdump: support more than one crash kernel regions Chen Zhou
2019-04-03 11:29 ` Mike Rapoport
2019-04-03 13:51 ` Chen Zhou
2019-04-04 14:44 ` Mike Rapoport
2019-04-05 2:17 ` Chen Zhou
2019-04-05 3:47 ` Chen Zhou
2019-04-08 6:57 ` Mike Rapoport
2019-04-08 8:39 ` Chen Zhou
2019-04-08 15:38 ` Chen Zhou
2019-04-03 3:05 ` Chen Zhou [this message]
2019-04-09 5:20 ` [PATCH 0/3] support reserving crashkernel above 4G on arm64 kdump Bhupesh Sharma
2019-04-09 9:07 ` Chen Zhou
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