RE: [PATCH] kexec/kdump: Minor Documentation updates for arm64 and Image
From: Bharat Bhushan
Date: Thu May 18 2017 - 02:14:18 EST
> -----Original Message-----
> From: Dave Young [mailto:dyoung@xxxxxxxxxx]
> Sent: Thursday, May 18, 2017 11:29 AM
> To: Bharat Bhushan <bharat.bhushan@xxxxxxx>
> Cc: bhe@xxxxxxxxxx; vgoyal@xxxxxxxxxx; corbet@xxxxxxx;
> kexec@xxxxxxxxxxxxxxxxxxx; linux-doc@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; takahiro.akashi@xxxxxxxxxx; panand@xxxxxxxxxx
> Subject: Re: [PATCH] kexec/kdump: Minor Documentation updates for
> arm64 and Image
> Add Takahiro and Pratyush, they should be able to review the arm64 part.
> On 05/18/17 at 11:03am, Bharat Bhushan wrote:
> > 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
> > 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
> > - 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>"
> For uncompressed Image, dtb is not necessary?
Yes dtb is not necessary, it works for me without giving dtb.
> > 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
> > --
> > 1.9.3