From owner-freebsd-current@FreeBSD.ORG  Wed Sep 30 23:18:58 2009
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From: Jung-uk Kim <jkim@FreeBSD.org>
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Date: Wed, 30 Sep 2009 19:18:44 -0400
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Cc: Alexander Leidinger <Alexander@Leidinger.net>
Subject: Re: new ACPI warning after update to 9-current
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On Wednesday 30 September 2009 07:58 am, Alexander Leidinger wrote:
> Hi,
>
> after updating form 8-beta2 to current (r197613) I get the
> following new message while booting:
> ---snip---
> ACPI Warning: Detected an unsupported executable opcode at
> module-level: [0x7B] at table offset 0x94 (20090903/psloop-630)
> ACPI Warning: Detected an unsupported executable opcode at
> module-level: [0x7B] at table offset 0x99 (20090903/psloop-630)
> ---snip---
>
> Anything I should provide additionally? What does it mean (the
> non-obvious meaning and the implications for the system)?

New ACPICA added partial support for executable at module level, which 
is illegal by specification and previously ignored without warning.  
Unfortunately many BIOSes out there has broken DSDT/SSDT because 
Windows ACPI interpreter does not care although it is illegal since 
ACPI 2.0.  I say "partial" because only three opcodes are supported 
at module level ATM, i.e., If, Else, and While.  Basically, it is 
telling you that unsupported opcode is found at module level.  For 
more info, see the following commit:

http://git.moblin.org/cgit.cgi/acpica/commit/?id=80d7951177315f70b5ffd8663985fbf725d07799

Jung-uk Kim