[PATCH] kexec/kdump: Minor Documentation updates for arm64 and Image

From: Bharat Bhushan
Date: Thu May 18 2017 - 01:36:16 EST

This patch have minor updates in Documentation for arm64i as
relocatable kernel.
Also this patch updates documentation for using uncompressed
image "Image" which is used for ARM64.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@xxxxxxx>
Documentation/kdump/kdump.txt | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt
index 615434d..522ce13 100644
--- a/Documentation/kdump/kdump.txt
+++ b/Documentation/kdump/kdump.txt
@@ -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
@@ -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 a 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