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

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Message-ID: <20120423170507.GD22364@phenom.dumpdata.com>
Date:	Mon, 23 Apr 2012 13:05:07 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Liu, Jinsong" <jinsong.liu@...el.com>,
	"Luck, Tony" <tony.luck@...el.com>, Borislav Petkov <bp@...64.org>,
	"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>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform

On Mon, Apr 23, 2012 at 09:26:42AM -0700, H. Peter Anvin wrote:
> On 04/23/2012 08:43 AM, Liu, Jinsong wrote:
> > 
> > and, hypervisor only record error into its mc_info cookie (in its
> > own format), it doesn't care what's dom0's version and how dom0 translate it
> > -- that's dom0's business. The role of hypervisor is virtual 'platform',
> > just like h/w platform don't care what linux version runs over it.
> > 
> 
> And this is the *OTHER* problem with Xen.  A platform is only a platform
> if it is documented.  There are a number of PV hypervisors which *are*
> documented in detail, but Xen is not one of them.

And slowly we are working on that. As I mentioned to you, we are in process
of documenting those calls so that there is a document similar to an SDM.
It takes time though.
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