Re: kern/44360: Booting on a Tyan motherboard with dual Xeon, under Xen, crashes

[Michael Graff <explorer%flame.org@localhost>]

The following reply was made to PR kern/44360; it has been noted by GNATS.

From: Michael Graff <explorer%flame.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: Jukka Ruohonen <jruohonen%iki.fi@localhost>, 
kern-bug-people%netbsd.org@localhost, 
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/44360: Booting on a Tyan motherboard with dual Xeon, under
 Xen, crashes
Date: Mon, 10 Jan 2011 14:46:38 -0600

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 On 2011-01-09 4:00 AM, Jukka Ruohonen wrote:
 >  Is this Xen-specific? In other words, does amd64 or i386 GENERIC boot fine?
 
 Yes.
 
 It turns out enabling certain power management features in the BIOS
 cause the ACPI tables to become broken in some way.
 
 Booting under "standard" GENERIC built last night from the netbsd-5
 branch produces these warnings:
 
 ACPI Error (tbutils-0511): Invalid length 0x0 in RSDT/XSDT [20080321]
 ACPI: unable to initialize ACPI tables: AE_INVALID_TABLE_LENGTH
 mainbus0: Intel MP Specification (Version 1.4) (INTEL    BLACKFORD VS)
 
 However, booting under Xen causes the above crash.
 
 Fiddling around with the BIOS to not enable any power saving features
 (gah) "fixes" this.
 
 - --Michael
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