linux-kernel - Re: [Xen-devel] [PATCH 2/2] Allow kdump with crash_kexec_post

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Message-ID: <578639AE.10500@citrix.com>
Date:	Wed, 13 Jul 2016 13:53:02 +0100
From:	David Vrabel <david.vrabel@...rix.com>
To:	Petr Tesarik <ptesarik@...e.com>, Juergen Gross <jgross@...e.com>,
	"Josh Triplett" <josh@...htriplett.org>,
	Ingo Molnar <mingo@...hat.com>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	Eric Biederman <ebiederm@...ssion.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dave Young <dyoung@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Vrabel <david.vrabel@...rix.com>
CC:	"moderated list:XEN HYPERVISOR INTERFACE" 
	<xen-devel@...ts.xenproject.org>,
	"maintainer:X86 ARCHITECTURE 32-BIT AND 64-BIT" <x86@...nel.org>,
	"open list:KEXEC" <kexec@...ts.infradead.org>,
	"open list" <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH 2/2] Allow kdump with
 crash_kexec_post_notifiers

On 13/07/16 13:20, Petr Tesarik wrote:
> If a crash kernel is loaded, do not crash the running domain. This is
> needed if the kernel is loaded with crash_kexec_post_notifiers, because
> panic notifiers are run before __crash_kexec() in that case, and this
> Xen hook prevents its being called later.

Prioritising the in-kernel kexec image over the hypervisor one seems
sensible behaviour to me.

Reviewed-by: David Vrabel <david.vrabel@...rix.com>

David