linux-kernel - Re: [Xen-devel] [PATCH 1/3] xen/mce: Add mcelog support for Xen platform (v2)

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Message-ID: <20120525202309.GA14524@phenom.dumpdata.com>
Date:	Fri, 25 May 2012 16:23:09 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	"Liu, Jinsong" <jinsong.liu@...el.com>
Cc:	Borislav Petkov <bp@...64.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Luck, Tony" <tony.luck@...el.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>
Subject: Re: [Xen-devel] [PATCH 1/3] xen/mce: Add mcelog support for Xen
 platform (v2)

> What I mean is,
> If mcelog.c create /dev/xen-mcelog (say, minor=226), native mce.c would create /dev/mcelog (minor=227).
> Under such case, may we create a symlink in /dev/mcelog pointing to /dev/xen-mcelog, without touching native mce code? and how?

I thought the idea was that we would create /dev/mcelog using the same major/minor.

However if you want to create /dev/xen-mcelog and then create from the kernel
another file in /dev that is name 'mcelog' and is a symlink to /dev/mcelog - that
is OK too. Obviously you will also need to disable the generic '/dev/mcelog'
(and that can be done in the same way as lguest does it).
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