Message-ID: <4FB28FA2.8090308@linux.intel.com>
Date: Tue, 15 May 2012 10:17:22 -0700
From: "H. Peter Anvin" <hpa@linux.intel.com>
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To: Gleb Natapov <gleb@redhat.com>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>, Hannes Reinecke <hare@suse.de>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] EDD: Check for correct EDD 3.0 length
References: <1337079889-62380-1-git-send-email-hare@suse.de> <20120515111255.GJ32036@redhat.com> <4FB23C09.7060300@suse.de> <20120515115917.GK32036@redhat.com> <20120515150015.5bf17aea@pyramind.ukuu.org.uk> <20120515143644.GD6948@redhat.com> <20120515161439.00e2de3c@pyramind.ukuu.org.uk> <20120515154641.GI6948@redhat.com>
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On 05/15/2012 08:46 AM, Gleb Natapov wrote:
> There is Phoenix spec 3.0 and there are T13 EDD3.0/4.0. They are
> incompatible and you can't tell which one specific BIOS actually use.
> Everything is correct till now?

You can by the data length.

But yes, there is Phoenix 3.0 (1998), T13 3.0 (2004) and T13 4.0 (2010),
although the latter seems to be stalled in final draft; according to the
T13 logs it went through final ballot resolution but doesn't seem to
have actually been published, unless it got merged into another document
(which is possible).

	-hpa
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