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| author | Wei Huang <wei@redhat.com> | 2015-01-30 13:17:08 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-02-11 21:47:51 +0100 |
| commit | edecf5eced082cb45e213cb4e791b2fcf9f867c1 (patch) | |
| tree | 4b29c2caf500dfc9400384280e483b5a5561ce00 | |
| parent | bc5baffa3554e4c0d20c1dbe879aec931866bd69 (diff) | |
| download | focaccia-qemu-edecf5eced082cb45e213cb4e791b2fcf9f867c1.tar.gz focaccia-qemu-edecf5eced082cb45e213cb4e791b2fcf9f867c1.zip | |
kvm_stat: Add kvm_exit reasons for aarch64
This patch defines the list of kvm_exit reasons for aarch64. This list is based on the Exception Class (EC) field of HSR register. With this patch users can trace the execution of guest VMs better. A sample output from command "kvm_stat -1 -t" is shown as the following: <...> kvm_exit(WATCHPT_HYP) 0 0 kvm_exit(WFI) 9422 9361 NOTE: This patch requires TRACE_EVENT(kvm_exit) to include exit_reason field in TP_ARGS. A patch to upstream kernel has been submitted. Signed-off-by: Wei Huang <wei@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rwxr-xr-x | scripts/kvm/kvm_stat | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index c0c4ff0de3..c65cabda5a 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -145,6 +145,45 @@ svm_exit_reasons = { 0x400: 'NPF', } +# EC definition of HSR (from arch/arm64/include/asm/kvm_arm.h) +aarch64_exit_reasons = { + 0x00: 'UNKNOWN', + 0x01: 'WFI', + 0x03: 'CP15_32', + 0x04: 'CP15_64', + 0x05: 'CP14_MR', + 0x06: 'CP14_LS', + 0x07: 'FP_ASIMD', + 0x08: 'CP10_ID', + 0x0C: 'CP14_64', + 0x0E: 'ILL_ISS', + 0x11: 'SVC32', + 0x12: 'HVC32', + 0x13: 'SMC32', + 0x15: 'SVC64', + 0x16: 'HVC64', + 0x17: 'SMC64', + 0x18: 'SYS64', + 0x20: 'IABT', + 0x21: 'IABT_HYP', + 0x22: 'PC_ALIGN', + 0x24: 'DABT', + 0x25: 'DABT_HYP', + 0x26: 'SP_ALIGN', + 0x28: 'FP_EXC32', + 0x2C: 'FP_EXC64', + 0x2F: 'SERROR', + 0x30: 'BREAKPT', + 0x31: 'BREAKPT_HYP', + 0x32: 'SOFTSTP', + 0x33: 'SOFTSTP_HYP', + 0x34: 'WATCHPT', + 0x35: 'WATCHPT_HYP', + 0x38: 'BKPT32', + 0x3A: 'VECTOR32', + 0x3C: 'BRK64', +} + # From include/uapi/linux/kvm.h, KVM_EXIT_xxx userspace_exit_reasons = { 0: 'UNKNOWN', @@ -212,7 +251,8 @@ def ppc_init(): def aarch64_init(): globals().update({ - 'sc_perf_evt_open' : 241 + 'sc_perf_evt_open' : 241, + 'exit_reasons' : aarch64_exit_reasons, }) def detect_platform(): |