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Commit a711bdc0 authored by Bharat Bhushan's avatar Bharat Bhushan Committed by Linus Torvalds
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kexec/kdump: minor Documentation updates for arm64 and Image 

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: default avatarBharat 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1229384f

Documentation/kdump/kdump.txt

+9 −3
Original line number Diff line number Diff line
@@ -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