Re: [PATCH] ACPI: Disable _GTS and _BFS support by default

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On Mon, 2009-04-20 at 17:01 +0800, Thomas Renninger wrote:
> On Saturday 18 April 2009 05:51:42 Len Brown wrote:
> > From: Len Brown <len.brown@xxxxxxxxx>
> > 
> > Executing BIOS code paths not exercised by Windows
> > tends to get Linux into trouble.
> Where do we know Windows does not use them?
> Is that confirmed by a Windows developer or has this been
> tried with KVM?
> For the latter, it could be that these are only called under
> certain circumstances.
It is tested by using KVM. And this is tested on windows XP/Vista.
IMO this should be consistent with the native windows.
> 
> > However, if a system does benefit from _GTS or _BFS,
> > acpi.gts=1 an acpi.bfs=1 are now available to enable them.
> If the systems works better it's probably a good idea to add
> that patch, I'd just like to know how sure we can be that
> Windows never calls these.
> 
> Thanks,
> 
>      Thomas
> 
> > http://bugzilla.kernel.org/show_bug.cgi?id=13041
> 

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