diff options
| author | James Hogan <james.hogan@imgtec.com> | 2016-06-14 09:40:13 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-14 11:16:23 +0200 |
| commit | 9887d1c75ba2f210b403d536ab025d4b2b36fb57 (patch) | |
| tree | af76426f0e2265dd0017b2a427d898a5f4f44116 /arch | |
| parent | 1e09e86ac13747903501004082bf1c5b7c6262b2 (diff) | |
MIPS: KVM: Add kvm_asid_change trace event
Add a trace event for guest ASID changes, replacing the existing
kvm_debug call.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kvm/emulate.c | 7 | ||||
| -rw-r--r-- | arch/mips/kvm/trace.h | 22 |
2 files changed, 25 insertions, 4 deletions
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c index fce08bda9ebc..ee0e61d2b6fb 100644 --- a/arch/mips/kvm/emulate.c +++ b/arch/mips/kvm/emulate.c @@ -1082,11 +1082,10 @@ enum emulation_result kvm_mips_emulate_CP0(u32 inst, u32 *opc, u32 cause, if ((KSEGX(vcpu->arch.gprs[rt]) != CKSEG0) && ((kvm_read_c0_guest_entryhi(cop0) & KVM_ENTRYHI_ASID) != nasid)) { - kvm_debug("MTCz, change ASID from %#lx to %#lx\n", + trace_kvm_asid_change(vcpu, kvm_read_c0_guest_entryhi(cop0) - & KVM_ENTRYHI_ASID, - vcpu->arch.gprs[rt] - & KVM_ENTRYHI_ASID); + & KVM_ENTRYHI_ASID, + nasid); /* Blow away the shadow host TLBs */ kvm_mips_flush_host_tlb(1); diff --git a/arch/mips/kvm/trace.h b/arch/mips/kvm/trace.h index ffa6ee8f2025..7daf7474d6a6 100644 --- a/arch/mips/kvm/trace.h +++ b/arch/mips/kvm/trace.h @@ -122,6 +122,28 @@ TRACE_EVENT(kvm_aux, __entry->pc) ); +TRACE_EVENT(kvm_asid_change, + TP_PROTO(struct kvm_vcpu *vcpu, unsigned int old_asid, + unsigned int new_asid), + TP_ARGS(vcpu, old_asid, new_asid), + TP_STRUCT__entry( + __field(unsigned long, pc) + __field(u8, old_asid) + __field(u8, new_asid) + ), + + TP_fast_assign( + __entry->pc = vcpu->arch.pc; + __entry->old_asid = old_asid; + __entry->new_asid = new_asid; + ), + + TP_printk("PC: 0x%08lx old: 0x%02x new: 0x%02x", + __entry->pc, + __entry->old_asid, + __entry->new_asid) +); + #endif /* _TRACE_KVM_H */ /* This part must be outside protection */ |