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kexec/kdump: minor Documentation updates for arm64 and Image

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Minor updates in Documentation for arm64 as relocatable kernel.  Also
this patch updates documentation for using uncompressed image "Image"
which is used for ARM64.

Link: http://lkml.kernel.org/r/1495104793-6563-1-git-send-email-Bharat.Bhushan@nxp.com
Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Pratyush Anand <panand@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bharat Bhushan 2017-07-12 14:33:24 -07:00 committed by Linus Torvalds
parent 1229384f5b
commit a711bdc095
1 changed files with 9 additions and 3 deletions
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12
Documentation/kdump/kdump.txt
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@ -112,8 +112,8 @@ There are two possible methods of using Kdump.
2) Or use the system kernel binary itself as dump-capture kernel and there is
no need to build a separate dump-capture kernel. This is possible
only with the architectures which support a relocatable kernel. As
of today, i386, x86_64, ppc64, ia64 and arm architectures support relocatable
kernel.
of today, i386, x86_64, ppc64, ia64, arm and arm64 architectures support
relocatable kernel.
Building a relocatable kernel is advantageous from the point of view that
one does not have to build a second kernel for capturing the dump. But
@ -339,7 +339,7 @@ For arm:
For arm64:
- Use vmlinux or Image
If you are using a uncompressed vmlinux image then use following command
If you are using an uncompressed vmlinux image then use following command
to load dump-capture kernel.
kexec -p <dump-capture-kernel-vmlinux-image> \
@ -361,6 +361,12 @@ to load dump-capture kernel.
--dtb=<dtb-for-dump-capture-kernel> \
--append="root=<root-dev> <arch-specific-options>"
If you are using an uncompressed Image, then use following command
to load dump-capture kernel.
kexec -p <dump-capture-kernel-Image> \
--initrd=<initrd-for-dump-capture-kernel> \
--append="root=<root-dev> <arch-specific-options>"
Please note, that --args-linux does not need to be specified for ia64.
It is planned to make this a no-op on that architecture, but for now