Re: [PATCH] Set bit 1 in disabled processor's _STA

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On Mon, May 18, 2009 at 02:40:18PM +0300, Gleb Natapov wrote:
> On Mon, May 18, 2009 at 08:39:43AM -0300, Glauber Costa wrote:
> > > Now I recall something on LKML about this. Well, in this case Linux
> > > shouldn't have used ACPI to invent its own way to do cpu hot-plug.
> > It didn't.
> > History shows that this method is what is used in some unisys machines,
> > which seems to be the only ones implementing this around.
> The questions are: What is "this" that linux currently implements, how
> windows expects CPU hot-plug to work, are there any real x86 hardware
> that supports CPU host-plug and what should we do about all this.
as I said, there are unisys machines that implements cpu hotplug.
The way they do it, is the way Linux kernel currently expects. The same way
we implement on our BIOS.

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