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

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

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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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