linux-kernel - Re: [Xen-devel] [PATCH v3 00/11] xen: Initial kexec/kdump implementation

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Message-Id: <50E55DFD02000078000B2A10@nat28.tlf.novell.com>
Date:	Thu, 03 Jan 2013 09:31:25 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Andrew Cooper" <andrew.cooper3@...rix.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	"x86@...nel.org" <x86@...nel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"Daniel Kiper" <daniel.kiper@...cle.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"maxim.uvarov@...cle.com" <maxim.uvarov@...cle.com>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"vgoyal@...hat.com" <vgoyal@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"H. PeterAnvin" <hpa@...or.com>
Subject: Re: [Xen-devel] [PATCH v3 00/11] xen: Initial kexec/kdump
 implementation

>>> On 02.01.13 at 12:26, Andrew Cooper <andrew.cooper3@...rix.com> wrote:
> On 27/12/12 18:02, Eric W. Biederman wrote:
>> It probably make sense to split them apart a little even.
> 
> Thinking about this split, there might be a way to simply it even more.
> 
> /sbin/kexec can load the "Xen" crash kernel itself by issuing hypercalls 
> using /dev/xen/privcmd.  This would remove the need for the dom0 kernel 
> to distinguish between loading a crash kernel for itself and loading a 
> kernel for Xen.
> 
> Or is this just a silly idea complicating the matter?

I don't think so (and suggested that before as a response to an
earlier submission of this patch set), and it would make most of
the discussion here mute.

Jan

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