diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index 95b68711f287f9b0a0e9ef476e36094fe45ae757..c3d1d1c0799ee338a4addf544a84c93fc5261e14 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -1462,6 +1462,24 @@ __init int amd_pmu_init(void) return 0; } +static inline void amd_pmu_reload_virt(void) +{ + if (x86_pmu.version >= 2) { + /* + * Clear global enable bits, reprogram the PERF_CTL + * registers with updated perf_ctr_virt_mask and then + * set global enable bits once again + */ + amd_pmu_v2_disable_all(); + amd_pmu_enable_all(0); + amd_pmu_v2_enable_all(0); + return; + } + + amd_pmu_disable_all(); + amd_pmu_enable_all(0); +} + void amd_pmu_enable_virt(void) { struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events); @@ -1469,8 +1487,7 @@ void amd_pmu_enable_virt(void) cpuc->perf_ctr_virt_mask = 0; /* Reload all events */ - amd_pmu_disable_all(); - x86_pmu_enable_all(0); + amd_pmu_reload_virt(); } EXPORT_SYMBOL_GPL(amd_pmu_enable_virt); @@ -1487,7 +1504,6 @@ void amd_pmu_disable_virt(void) cpuc->perf_ctr_virt_mask = AMD64_EVENTSEL_HOSTONLY; /* Reload all events */ - amd_pmu_disable_all(); - x86_pmu_enable_all(0); + amd_pmu_reload_virt(); } EXPORT_SYMBOL_GPL(amd_pmu_disable_virt);