Messages in this thread | | | Date | Thu, 28 May 2009 22:50:09 +0200 | From | Pavel Machek <> | Subject | Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic |
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On Thu 2009-05-28 08:29:13, Michael S. Zick wrote: > On Thu May 28 2009, Pavel Machek wrote: > > Hi! > > > > > The observation that executing an unnecessary 'lock' opcode in some > > > cases slows down the machine is not felt by myself to be significant > > > to duplicating my observations. Note: I have been wrong before. > > > > > > This is as informative as I can make the message. > > > > > > PS: *not* a single machine failure, tested on five machines, owned > > > by four different people, two brands, with different use histories. > > > > I have seen some problems on via c7m based machines, where some 'smart > > bios person' implemented EC access in AML (normally, it is accessed > > from ec.c driver). Maybe you have similary bad bios? > > > > How to tell or distingush? > Did your looking at the dmidecode output show you that?
Disassemble DSDT, and if you see strange code duplicating kernel's ec.c driver, you have similar problem... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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