From: Chen Zhou <chenzhou10@huawei.com>
To: <catalin.marinas@arm.com>, <will.deacon@arm.com>,
<akpm@linux-foundation.org>, <ard.biesheuvel@linaro.org>,
<rppt@linux.ibm.com>, <tglx@linutronix.de>, <mingo@redhat.com>,
<bp@alien8.de>, <ebiederm@xmission.com>
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 4/4] kdump: update Documentation about crashkernel on arm64
Date: Tue, 7 May 2019 11:50:58 +0800 [thread overview]
Message-ID: <20190507035058.63992-5-chenzhou10@huawei.com> (raw)
In-Reply-To: <20190507035058.63992-1-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 | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 268b10a..03a08aa 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -705,7 +705,7 @@
memory region [offset, offset + size] for that kernel
image. If '@offset' is omitted, then a suitable offset
is selected automatically.
- [KNL, x86_64] select a region under 4G first, and
+ [KNL, x86_64, arm64] select a region under 4G first, and
fall back to reserve region above 4G when '@offset'
hasn't been specified.
See Documentation/kdump/kdump.txt for further details.
@@ -718,14 +718,14 @@
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
next prev parent reply other threads:[~2019-05-07 3:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-07 3:50 [PATCH 0/4] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2019-05-07 3:50 ` [PATCH 1/4] x86: kdump: move reserve_crashkernel_low() into kexec_core.c Chen Zhou
2019-06-05 16:29 ` James Morse
2019-06-13 11:26 ` Chen Zhou
2019-06-12 8:45 ` Dave Young
2019-06-13 11:27 ` Chen Zhou
2019-05-07 3:50 ` [PATCH 2/4] arm64: kdump: support reserving crashkernel above 4G Chen Zhou
2019-06-05 16:29 ` James Morse
2019-06-13 11:27 ` Chen Zhou
2019-06-13 12:44 ` James Morse
2019-05-07 3:50 ` [PATCH 3/4] memblock: extend memblock_cap_memory_range to multiple ranges Chen Zhou
2019-05-07 3:50 ` Chen Zhou [this message]
2019-05-15 5:16 ` [PATCH 4/4] kdump: update Documentation about crashkernel on arm64 Bhupesh Sharma
2019-05-16 3:23 ` Chen Zhou
2019-05-15 5:06 ` [PATCH 0/4] support reserving crashkernel above 4G on arm64 kdump Bhupesh Sharma
2019-05-16 3:19 ` Chen Zhou
2019-06-03 2:24 ` Chen Zhou
2019-06-05 16:32 ` James Morse
2019-06-13 11:27 ` Chen Zhou
2019-06-13 12:43 ` James Morse
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