From 314ff52727fe94dfbe07f3a9a489ab3ca8d8df5a Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 27 Jul 2011 20:46:25 -0700
Subject: [PATCH] sparc: Don't do expensive hypervisor PCR write unless
 necessary.

The hypervisor call is only necessary if hypervisor events are
being requested.

So if we're not tracking hypervisor events, simply do a direct
register write.

Signed-off-by: David S. Miller <davem@davemloft.net>
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