Re: [PATCH 06/11] KVM: PPC: Book3S HV: Support POWER6 compatibility mode on POWER7

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On Fri, Sep 13, 2013 at 02:58:43PM -0500, Alexander Graf wrote:
> 
> How long does writing to PCR take? Is it faster than a load+branch to see whether we actually need it? I would assume the normal fast path is going to be guest cpu == host.

Seems to be about 30 cycles to write PCR, so a compare and branch is
faster.  I'll change it.

Paul.
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