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

[Bharat Bhushan]

> -----Original Message-----
> From: Pratyush Anand [mailto:panand@xxxxxxxxxx]
> Sent: Monday, May 22, 2017 12:09 PM
> To: AKASHI Takahiro <takahiro.akashi@xxxxxxxxxx>; Dave Young
> <dyoung@xxxxxxxxxx>; Bharat Bhushan <bharat.bhushan@xxxxxxx>;
> bhe@xxxxxxxxxx; vgoyal@xxxxxxxxxx; corbet@xxxxxxx;
> kexec@xxxxxxxxxxxxxxxxxxx; linux-doc@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] kexec/kdump: Minor Documentation updates for
> arm64 and Image
> 
> 
> 
> On Friday 19 May 2017 09:15 AM, AKASHI Takahiro wrote:
> >>> +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?
> > Just for clarification, dtb is optional for both vmlinux and Image on
> > arm64. (This means you can specify it if you want.) But this is also
> > true for initrd and append(command line) to some extent.
> 
> Yes, I agree.

Should I mention "-dtb" also for "Image"?

Also do we need to mention that it is optional somewhere in this document? I do not see "optional" is mentioned for other parameters and architecture.

Does this looks ok:

	" -dtb=<optional-dtb-for-dump-capture-kernel> \"

Thanks
-Bharat

> >
> > More precisely, whether these parameters are optional or not will
> > depend on architectures, not formats, I believe.
> 
> May be not architecture, rather a distro environment.
> 
> For example, we should be able to work without --initrd for any arch if kernel
> has been compiled by configuring CONFG_INITRAMFS_SOURCE.
> 
> ~Pratyush