RE: [patch 2/6] acpi: check _PSS invalidation when BIOS report _PSS with 0x80000000

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>-----Original Message-----
>From: Andrew Morton [mailto:akpm@xxxxxxxxxxxxxxxxxxxx]
>Sent: Friday, January 09, 2009 1:24 PM
>To: Len Brown
>Cc: linux-acpi@xxxxxxxxxxxxxxx; Song, Youquan; Pallipadi, Venkatesh
>Subject: Re: [patch 2/6] acpi: check _PSS invalidation when
>BIOS report _PSS with 0x80000000
>
>On Fri, 09 Jan 2009 16:01:47 -0500 (EST)
>Len Brown <lenb@xxxxxxxxxx> wrote:
>
>> I recall nacking this one some time ago.
>
>Well please treat it as a bug report then.  "the kernel will boot
>crash when load cpufreq govenors".  Bad!
>

I think this should be a special case even when it is not defined in spec.

There is BIOS code out there that is giving 0x80000000 and Linux fails to
boot on these systems, where as the other OS does not. Existence of even one
such system means that the code will surely be copied onto other BIOSes and
I don't think we can persuade BIOS guys to change this.

Thanks,
Venki
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