From: Stephane Eranian <eranian@google.com>
Date: Tue, 16 Apr 2013 11:51:43 +0000 (+0200)
Subject: perf/x86: Fix offcore_rsp valid mask for SNB/IVB
X-Git-Tag: v3.9-rc8~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1923820c447e986a9da0fc6bf60c1dccdf0408e;p=pandora-kernel.git

perf/x86: Fix offcore_rsp valid mask for SNB/IVB

The valid mask for both offcore_response_0 and
offcore_response_1 was wrong for SNB/SNB-EP,
IVB/IVB-EP. It was possible to write to
reserved bit and cause a GP fault crashing
the kernel.

This patch fixes the problem by correctly marking the
reserved bits in the valid mask for all the processors
mentioned above.

A distinction between desktop and server parts is introduced
because bits 24-30 are only available on the server parts.

This version of the  patch is just a rebase to perf/urgent tree
and should apply to older kernels as well.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: jolsa@redhat.com
Cc: gregkh@linuxfoundation.org
Cc: security@kernel.org
Cc: ak@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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