Thread (9 messages) 9 messages, 4 authors, 2015-07-15

Re: [PATCH 1/3] panic: Disable crash_kexec_post_notifiers if kdump is not available

From: <hidden>
Date: 2015-07-14 13:59:38
Also in: kexec, linux-arm-kernel, linux-sh, linuxppc-dev, lkml

Possibly related (same subject, not in this thread)

On Mon, Jul 13, 2015 at 08:19:45PM -0500, Eric W. Biederman wrote:
dwalker@fifo99.com writes:
quoted
On Fri, Jul 10, 2015 at 08:41:28AM -0500, Eric W. Biederman wrote:
quoted
Hidehiro Kawai [off-list ref] writes:
quoted
You can call panic notifiers and kmsg dumpers before kdump by
specifying "crash_kexec_post_notifiers" as a boot parameter.
However, it doesn't make sense if kdump is not available.  In that
case, disable "crash_kexec_post_notifiers" boot parameter so that
you can't change the value of the parameter.
Nacked-by: "Eric W. Biederman" [off-list ref]
I think it would make sense if he just replaced "kdump" with "kexec".
It would be less insane, however it still makes no sense as without
kexec on panic support crash_kexec is a noop.  So the value of the
seeting makes no difference.
Can you explain more, I don't really understand what you mean. Are you suggesting
the whole "crash_kexec_post_notifiers" feature has no value ?

Daniel
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