linux-kernel - Re: [PATCH] kexec/kdump: Minor Documentation updates for arm64 and Image

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Message-ID: <2ed84f9f-76c8-62eb-36b5-e97568ba3a2e@redhat.com>
Date:   Mon, 22 May 2017 12:09:26 +0530
From:   Pratyush Anand <panand@...hat.com>
To:     AKASHI Takahiro <takahiro.akashi@...aro.org>,
        Dave Young <dyoung@...hat.com>,
        Bharat Bhushan <Bharat.Bhushan@....com>, bhe@...hat.com,
        vgoyal@...hat.com, corbet@....net, kexec@...ts.infradead.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
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.
>
> 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