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KVM: Add instruction emulation statistics

This commit is contained in:
Avi Kivity 2007-11-18 15:17:51 +02:00
parent f096ed8588
commit f2b5756bb3
2 changed files with 6 additions and 0 deletions
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2
drivers/kvm/kvm.h
View File

@ -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 {

4
drivers/kvm/x86.c
View File

@ -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;