From: Masayoshi Mizuma <msys.mizuma@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Baoquan He <bhe@redhat.com>
Cc: Masayoshi Mizuma <msys.mizuma@gmail.com>,
Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>,
linux-kernel@vger.kernel.org, mike.travis@hpe.com,
sivanich@hpe.com
Subject: [PATCH v3 2/2] docs: kernel-parameters.txt: document rand_mem_physical_padding parameter
Date: Tue, 4 Sep 2018 11:11:41 -0400 [thread overview]
Message-ID: <20180904151141.20264-2-msys.mizuma@gmail.com> (raw)
In-Reply-To: <20180904151141.20264-1-msys.mizuma@gmail.com>
From: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
This kernel parameter allows to change the padding used for the physical
memory mapping section when KASLR memory is enabled.
For some systems, the default value, CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING,
is not enough. The option is useful to adjust the padding size to work
around such issue.
Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
---
Documentation/admin-guide/kernel-parameters.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 0c883029881a..97f54c910c9c 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3477,6 +3477,13 @@
ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
See Documentation/blockdev/ramdisk.txt.
+ rand_mem_physical_padding=
+ [KNL] Define the padding size in terabytes
+ used for the physical memory mapping section
+ when KASLR memory is enabled.
+ The default value is
+ CONFIG_RANDOMIZE_MEMORY_PHYSICAL_PADDING.
+
ras=option[,option,...] [KNL] RAS-specific options
cec_disable [X86]
--
2.18.0
next prev parent reply other threads:[~2018-09-04 15:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-04 15:11 [PATCH v3 1/2] x86/mm: Add an option to change the padding used for the physical memory mapping Masayoshi Mizuma
2018-09-04 15:11 ` Masayoshi Mizuma [this message]
2018-09-18 13:30 ` Masayoshi Mizuma
2018-09-19 12:17 ` Ingo Molnar
2018-09-19 12:30 ` Thomas Gleixner
2018-09-19 12:48 ` Ingo Molnar
2018-09-19 14:10 ` Masayoshi Mizuma
2018-09-19 23:05 ` Travis, Mike
2018-09-20 16:26 ` Masayoshi Mizuma
2018-09-20 9:28 ` Thomas Gleixner
2018-09-20 16:28 ` Masayoshi Mizuma
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