From: Andi Kleen <ak@linux.intel.com>
Date: Wed, 9 Sep 2015 21:54:00 +0000 (-0700)
Subject: perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask
X-Git-Tag: omap-for-v4.3/fixes-rc5~68^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dfe1f3cb312624928052413928d88b0ee3492216;p=pandora-kernel.git

perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask

Stephane pointed out that the extrareg mask was one bit too short.
The bubble width field was truncated by one bit. Fix that here.
Also add some extra comments on the reserved bits inside the event
select code.

Reported-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1441835640-21347-3-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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