From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Xen 4.0.0-rc7 problem/hang with vt-d DMAR parsing
Date: Tue, 23 Mar 2010 14:48:39 +0000
Message-ID: <C7CE8547.E321%keir.fraser@eu.citrix.com>
References: <20100323144034.GV1878@reaktio.net>
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To: Pasi =?ISO-8859-1?B?S+Rya2vkaW5lbg==?= <pasik@iki.fi>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Cc: Weidong Han <weidong.han@intel.com>
List-Id: xen-devel@lists.xenproject.org

On 23/03/2010 14:40, "Pasi K=E4rkk=E4inen" <pasik@iki.fi> wrote:

>> Just when I wrote that Xen 4.0.0-rc7 works fine for me.. :)
>> Ok, so I went to BIOS and enabled VT-d. I haven't used VT-d earlier on t=
his
>> system.
>>=20
>=20
> I just tried Xen 4.0.0-rc6-pre, and it has the same problem,
> it is flooding the same messages and takes forever to boot.
>=20
> So 4.0.0-rc7 actually works better, since it surpresses
> the messages as a default so it takes "only" 30 secs to parse
> the DMAR tables.

Do you have the latest BIOS version installed? What motherboard do you have=
?
It's not impossible that the BIOS VT-d support is just broken (I assume
you've never tested VT-d on this particular type of system before).

 -- Keir