linux-kernel - Re: Suspend code ordering (again)

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Message-ID: <alpine.LFD.0.9999.0712272138110.21557@woody.linux-foundation.org>
Date:	Thu, 27 Dec 2007 21:41:32 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Robert Hancock <hancockr@...w.ca>
cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Carlos Corbacho <carlos@...angeworlds.co.uk>,
	"H. Peter Anvin" <hpa@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: Suspend code ordering (again)

On Thu, 27 Dec 2007, Robert Hancock wrote:
> 
> I doubt they would prefer the later ordering in any way that matters, if the
> Windows version they were designed for uses the earlier ordering.

Well, I wouldn't say it's abotu "preferring" one over the other. It's very 
possible that the BIOS writers were *intending* to prefer ACPI 2.0, and it 
may even be likely that they thought that they wrote it that way, but the 
real issue is that it has apparently never ever been *tested* that way.

So yes, maybe the vendors actually thought they were a good ACPI-2.0 
implementation, but if Windows doesn't do the ordering that the 2.0 spec 
expects, then that is pretty much just a theoretical thing.

But yeah, it would be really nice to have this verified some way. Somebody 
must already know (whether it's a VM person or a BIOS writer, and whether 
they'd tell us, is obviously another issue).

		Linus
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