Kan Liang 4e949e9b9d perf/x86/intel: Don't enable freeze-on-smi for PerfMon V1 ... The SMM freeze feature was introduced since PerfMon V2. But the current code unconditionally enables the feature for all platforms. It can generate #GP exception, if the related FREEZE_WHILE_SMM bit is set for the machine with PerfMon V1. To disable the feature for PerfMon V1, perf needs to - Remove the freeze_on_smi sysfs entry by moving intel_pmu_attrs to intel_pmu, which is only applied to PerfMon V2 and later. - Check the PerfMon version before flipping the SMM bit when starting CPU Fixes: 6089327f54 ("perf/x86: Add sysfs entry to freeze counters on SMI") Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: ak@linux.intel.com Cc: eranian@google.com Cc: acme@redhat.com Link: https://lkml.kernel.org/r/1524682637-63219-1-git-send-email-kan.liang@linux.intel.com		2018-04-25 21:41:22 +02:00
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amd	perf/x86/amd/power: Do not load AMD power module on !AMD platforms	2018-01-24 13:00:35 +01:00
intel	perf/x86/intel: Don't enable freeze-on-smi for PerfMon V1	2018-04-25 21:41:22 +02:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	perf/x86/events: Add an AMD-specific Makefile	2017-01-30 12:01:19 +01:00
core.c	perf/x86: Update rdpmc_always_available static key to the modern API	2018-03-27 07:53:00 +02:00
msr.c	x86/tsc: Get rid of rdtscll()	2018-03-23 20:07:54 +01:00
perf_event.h	Merge branch 'perf/urgent' into perf/core, to pick up fixes	2018-03-24 09:21:47 +01:00