Re: [PATCH] ACPI: make acpi_idle Nehalem-aware

From: Andi Kleen
Date: Tue Aug 03 2010 - 03:05:26 EST

On Tue, Aug 03, 2010 at 08:55:14AM +0200, Pavel Machek wrote:
> On Wed 2010-07-21 17:31:27, Len Brown wrote:
> > From: Len Brown <len.brown@xxxxxxxxx>
> >
> > The BIOS exports deep C-states on modern Intel processors
> > as "C3-type" to satisfy various legacy Operating Systems.
> Can you elaborate on this? I though the only difference between
> C2-type and C3-type is busmastering...

The main difference is latency.


ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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