]> git.baikalelectronics.ru Git - kernel.git/commit
perf/x86/intel/pt: Fix mask of num_address_ranges
authorXiaoyao Li <xiaoyao.li@intel.com>
Tue, 24 Aug 2021 04:06:22 +0000 (12:06 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 12 Sep 2021 06:56:39 +0000 (08:56 +0200)
commit824a765e5fbd3b248dbcf6cf7c72dfeed5f4bedd
tree11094e276fbe4a84c47d5abdfc094c10a5ba135f
parent02f071374fb1eae8337e4e81816e40a1d3982cfc
perf/x86/intel/pt: Fix mask of num_address_ranges

[ Upstream commit c53c6b7409f4cd9e542991b53d597fbe2751d7db ]

Per SDM, bit 2:0 of CPUID(0x14,1).EAX[2:0] reports the number of
configurable address ranges for filtering, not bit 1:0.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lkml.kernel.org/r/20210824040622.4081502-1-xiaoyao.li@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/events/intel/pt.c