From: Chen Zhou <chenzhou10@huawei.com>
To: <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<ebiederm@xmission.com>, <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: [RESEND PATCH v5 4/4] kdump: update Documentation about crashkernel on arm64
Date: Tue, 16 Apr 2019 19:35:19 +0800 [thread overview]
Message-ID: <20190416113519.90507-5-chenzhou10@huawei.com> (raw)
In-Reply-To: <20190416113519.90507-1-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 308af3b..a055983 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
next prev parent reply other threads:[~2019-04-16 11:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 11:35 [RESEND PATCH v5 0/4] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2019-04-16 11:35 ` [RESEND PATCH v5 1/4] x86: kdump: move reserve_crashkernel_low() into kexec_core.c Chen Zhou
2019-04-16 11:35 ` [RESEND PATCH v5 2/4] arm64: kdump: support reserving crashkernel above 4G Chen Zhou
2019-04-16 11:35 ` [RESEND PATCH v5 3/4] memblock: extend memblock_cap_memory_range to multiple ranges Chen Zhou
2019-04-16 11:35 ` Chen Zhou [this message]
2019-04-16 13:15 ` [RESEND PATCH v5 0/4] support reserving crashkernel above 4G on arm64 kdump Borislav Petkov
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