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authorAndi Kleen <ak@linux.intel.com>2015-01-06 14:34:35 -0800
committerIngo Molnar <mingo@kernel.org>2015-01-09 11:12:30 +0100
commit5306c31c5733cb4a79cc002e0c3ad256fd439614 (patch)
treed1d1225f4a489999ec2432942f046d1bafa5d49f /tools
parent86c269fea37334687b1c0789e6444be0d750e8a6 (diff)
perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
There was another report of a boot failure with a #GP fault in the uncore SBOX initialization. The earlier work around was not enough for this system. The boot was failing while trying to initialize the third SBOX. This patch detects parts with only two SBOXes and limits the number of SBOX units to two there. Stable material, as it affects boot problems on 3.18. Tested-by: Andreas Oehler <andreas@oehler-net.de> Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: <stable@vger.kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Yan, Zheng <zheng.z.yan@intel.com> Link: http://lkml.kernel.org/r/1420583675-9163-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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