linux-kernel - Re: [PATCH v2] Documentation: add 'crashkernel=auto' entry into kernel-parameters.txt

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Message-ID: <20150824112623.0b2f04a5@xps.lwn.net>
Date:	Mon, 24 Aug 2015 11:26:23 -0600
From:	Jonathan Corbet <corbet@....net>
To:	Yaowei Bai <bywxiaobai@....com>
Cc:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Documentation: add 'crashkernel=auto' entry into
 kernel-parameters.txt

On Mon, 24 Aug 2015 23:04:29 +0800
Yaowei Bai <bywxiaobai@....com> wrote:

> There is no 'crashkernel=auto' entry in kernel-parameters.txt, borrow it
> from kexec-kdump-howto.txt file in the kexec-tools-2.0.0 package.

OK, so I did some digging here.  As far as I can tell, there is no
crashkernel=auto entry because the auto-reserve patch has never been
merged into the mainline kernel.  RHEL kernels appear to have it, but
mainline doesn't.

Thus, merging this patch would make the documentation incorrect,
something I'd rather not do.  I appreciate efforts to improve the
kernel's documentation, but it is important to be sure that your proposed
changes make the docs closer to reality, rather than further away.

Thanks,

jon
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