linux-kernel - Re: linux-next: Tree for June 13: IO APIC breakage on HP nx6325

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Message-ID: <Pine.LNX.4.55.0806292057270.22548@cliff.in.clinika.pl>
Date:	Sun, 29 Jun 2008 21:03:29 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...e.hu>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Len Brown <lenb@...nel.org>
Subject: Re: linux-next: Tree for June 13: IO APIC breakage on HP nx6325

On Sun, 29 Jun 2008, Matthew Garrett wrote:

> The DSDT can't be updated without the BIOS being updated, and the DMI 
> information gives us a BIOS version string that can be matched against 
> if a fixed version is ever released. I'd be in favour of doing it with 
> DMI on the grounds that it's how we already handle machine-specific 
> quirks rather than adding new code to do it.

 Is the DMI ID *guaranteed* to be changed with an update to the DSDT?  
Anyway, you cannot imply from a given DMI ID a broken DSDT is present, so
you will have to repeat the experience of adding another DMI ID whenever a
user hits this broken DSDT with another piece of hardware.  As long as you
are able to pull this piece of information from that user, that is...

  Maciej
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