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Diffstat (limited to 'src/cpu/kvm/base.cc')
| -rw-r--r-- | src/cpu/kvm/base.cc | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/cpu/kvm/base.cc b/src/cpu/kvm/base.cc index a8e115da7..d25e145a5 100644 --- a/src/cpu/kvm/base.cc +++ b/src/cpu/kvm/base.cc @@ -1133,6 +1133,12 @@ BaseKvmCPU::setupCounters() cfgCycles.disabled(true) .pinned(true); + // Try to exclude the host. We set both exclude_hv and + // exclude_host since different architectures use slightly + // different APIs in the kernel. + cfgCycles.exclude_hv(true) + .exclude_host(true); + if (perfControlledByTimer) { // We need to configure the cycles counter to send overflows // since we are going to use it to trigger timer signals that @@ -1206,6 +1212,12 @@ BaseKvmCPU::setupInstCounter(uint64_t period) PerfKvmCounterConfig cfgInstructions(PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS); + // Try to exclude the host. We set both exclude_hv and + // exclude_host since different architectures use slightly + // different APIs in the kernel. + cfgInstructions.exclude_hv(true) + .exclude_host(true); + if (period) { // Setup a sampling counter if that has been requested. cfgInstructions.wakeupEvents(1) |