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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id q6-v6sm2148525qtq.44.2018.08.21.14.23.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 21 Aug 2018 14:23:17 -0700 (PDT) From: Masayoshi Mizuma To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Baoquan He Cc: Masayoshi Mizuma , Masayoshi Mizuma , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] docs: kernel-parameters.txt: document rand_mem_physical_padding parameter Date: Tue, 21 Aug 2018 17:23:05 -0400 Message-Id: <20180821212305.20214-2-msys.mizuma@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180821212305.20214-1-msys.mizuma@gmail.com> References: <20180821212305.20214-1-msys.mizuma@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Masayoshi Mizuma 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 --- 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