]> git.proxmox.com Git - mirror_ubuntu-focal-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)
committerStefan Bader <stefan.bader@canonical.com>
Fri, 1 Oct 2021 09:34:00 +0000 (11:34 +0200)
commit9e674d64e107db6c2b02415388c76c7c993310e7
treeaacbe7fea3534a170e6f8b60f15add7e3ed243a4
parent4118038eaba4d0188f89709888a7e2232a897605
perf/x86/intel/pt: Fix mask of num_address_ranges

BugLink: https://bugs.launchpad.net/bugs/1945517
[ 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>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
arch/x86/events/intel/pt.c