linux-kernel - RE: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform

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Date:	Mon, 23 Apr 2012 15:27:32 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Borislav Petkov <bp@...64.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	"Liu, Jinsong" <jinsong.liu@...el.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: RE: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform

> Because, if you'd hooked into it, just imagine one fine day, when we
> remove mcelog support, what screaming the xen people will be doing when
> mcelog doesn't work anymore.

Agreed. Even before we get to deleting mcelog, "struct mce" can change (new
fields could be added) ... and you don't want to have your hypervisor to
have to know which version of Linux it is talking to.

-Tony
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