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| author | Avi Kivity <avi@qumranet.com> | 2007-11-18 15:17:51 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:53:04 +0200 |
| commit | f2b5756bb3fbdca912c4890e444c18650389d8ae (patch) | |
| tree | 3583a8b6801ffcb1cf948e68ebede784022dcf78 /drivers | |
| parent | f096ed8588b53bf802b84862c6c4d00d25d1ed72 (diff) | |
| download | linux-f2b5756bb3fbdca912c4890e444c18650389d8ae.tar.gz | |
KVM: Add instruction emulation statistics
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/kvm/kvm.h | 2 | ||||
| -rw-r--r-- | drivers/kvm/x86.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index a85c5903591f..5a8a9af3593a 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -249,6 +249,8 @@ struct kvm_stat { u32 host_state_reload; u32 efer_reload; u32 fpu_reload; + u32 insn_emulation; + u32 insn_emulation_fail; }; struct kvm_io_device { diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c index c1211e125b43..a46b95b3651c 100644 --- a/drivers/kvm/x86.c +++ b/drivers/kvm/x86.c @@ -63,6 +63,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "host_state_reload", STAT_OFFSET(host_state_reload) }, { "efer_reload", STAT_OFFSET(efer_reload) }, { "fpu_reload", STAT_OFFSET(fpu_reload) }, + { "insn_emulation", STAT_OFFSET(insn_emulation) }, + { "insn_emulation_fail", STAT_OFFSET(insn_emulation_fail) }, { NULL } }; @@ -1381,7 +1383,9 @@ int emulate_instruction(struct kvm_vcpu *vcpu, get_segment_base(vcpu, VCPU_SREG_FS); r = x86_decode_insn(&vcpu->emulate_ctxt, &emulate_ops); + ++vcpu->stat.insn_emulation; if (r) { + ++vcpu->stat.insn_emulation_fail; if (kvm_mmu_unprotect_page_virt(vcpu, cr2)) return EMULATE_DONE; return EMULATE_FAIL; |