linux-kernel - RE: [PATCH] gts and bfs fixes (v3).

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Message-ID: <94F2FBAB4432B54E8AACC7DFDE6C92E346AC202F@ORSMSX101.amr.corp.intel.com>
Date:	Tue, 8 May 2012 21:53:52 +0000
From:	"Moore, Robert" <robert.moore@...el.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>, Len Brown <lenb@...nel.org>
CC:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Lin, Ming M" <ming.m.lin@...el.com>,
	"hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>
Subject: RE: [PATCH] gts and bfs fixes (v3).

I opened a problem report against the spec about a month ago on this subject -- to remove _GTS and _BFS from the ACPI spec.

bob

> -----Original Message-----
> From: linux-acpi-owner@...r.kernel.org [mailto:linux-acpi-
> owner@...r.kernel.org] On Behalf Of Rafael J. Wysocki
> Sent: Tuesday, May 08, 2012 2:39 PM
> To: Len Brown
> Cc: Konrad Rzeszutek Wilk; linux-kernel@...r.kernel.org; linux-
> acpi@...r.kernel.org; Lin, Ming M; hpa@...or.com; x86@...nel.org
> Subject: Re: [PATCH] gts and bfs fixes (v3).
> 
> On Tuesday, May 08, 2012, Len Brown wrote:
> > Ugh.
> >
> > I think instead we should go the other way and simply delete the code
> > for _GTS and _BFS support.
> >
> > The evidence is that while it is documented in the ACPI spec, no OS
> > implements it -- for when we tried it, we found some systems that
> > shipped AML that doesn't work.
> 
> Well, we can still remove it ...
> 
> > ps. yes, we should also petition the ACPI authors to remove _GTS and
> > _BFS from an upcoming revision.
> 
> Oh, yes, I totally agree. :-)
> 
> Thanks,
> Rafael
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