From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Juergen Gross <juergen.gross@ts.fujitsu.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: ACPI-Tables corrupted?
Date: Wed, 28 Jul 2010 11:03:36 +0100 [thread overview]
Message-ID: <C875BF08.1BD21%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4C4FFA97.1000902@ts.fujitsu.com>
On 28/07/2010 10:38, "Juergen Gross" <juergen.gross@ts.fujitsu.com> wrote:
> As you can see, the DMAR eye-catcher is replaced by blanks!
> This leads to a programmed panic in the crash kernel later in case of a
> panic in dom0...
>
> Any ideas?
> BTW: seen in unstable AND 4.0
Look at the tail of xen/drivers/passthrough/vtd/dmar.c: Xen *always*
*unconditionally* trashes the DMAR so that dom0 will not parse it.
Presumably bad stuff would happen if it did.
See for example xen-unstable:20181 changeset comment for something of an
explanation and the patch originator.
-- Keir
next prev parent reply other threads:[~2010-07-28 10:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-28 9:38 ACPI-Tables corrupted? Juergen Gross
2010-07-28 10:03 ` Keir Fraser [this message]
2010-07-28 11:26 ` Juergen Gross
2010-07-28 11:39 ` Keir Fraser
2010-07-28 12:13 ` Juergen Gross
2010-07-28 12:45 ` Keir Fraser
2010-07-28 13:27 ` Juergen Gross
2010-07-28 13:36 ` Konrad Rzeszutek Wilk
2010-07-29 6:19 ` Juergen Gross
2010-07-29 6:39 ` Keir Fraser
2010-07-29 6:48 ` Juergen Gross
2010-07-29 6:48 ` Keir Fraser
2010-07-29 6:53 ` Juergen Gross
2010-08-06 13:39 ` Jan Beulich
2010-08-06 14:04 ` Keir Fraser
2010-07-29 6:31 ` Jiang, Yunhong
2010-07-29 6:40 ` Keir Fraser
2010-07-29 6:48 ` Keir Fraser
2010-07-29 7:37 ` Jiang, Yunhong
2010-07-29 9:04 ` Juergen Gross
2010-07-29 9:33 ` Keir Fraser
2010-07-29 10:24 ` Keir Fraser
2010-07-30 4:47 ` Juergen Gross
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