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RE: [Xen-devel] Problems with enabling hypervisor C and P-statecontrol

To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, "Yu, Ke" <ke.yu@xxxxxxxxx>, "Niraj Tolia" <ntolia@xxxxxxxxx>
Subject: RE: [Xen-devel] Problems with enabling hypervisor C and P-statecontrol
From: "Ian Pratt" <Ian.Pratt@xxxxxxxxxxxxx>
Date: Fri, 24 Oct 2008 09:31:19 +0100
Cc: "Liu, Jinsong" <jinsong.liu@xxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Xen Developers <xen-devel@xxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-devel] Problems with enabling hypervisor C and P-statecontrol
> 
> Niraj, one more info here. From your log, cpus on your platform
> are actually indexed by:
> package 1 (0, 4, 8, 12)
> package 2 (1, 5, 9, 13)
> package 3 (2, 6, 10, 14)
> package 4 (3, 7, 11, 15)
> 
> thus cpu0/1/2/3 actually indicates 1st core in each package,
> instead of 4 cores in 1st package. :-)

We really ought to have code in Xen to make the enumeration consistent
regardless of the BIOS order. I don't really care whether its
sockets/cores/threads or threads/cores/sockets, but we really ought to
be consistent.

Ian 

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