Any comment on this patch? The QEMU kvm_stat patch* is dependent on this one to be functional. * http://lists.nongnu.org/archive/html/qemu-devel/2015-01/msg04673.html Thanks, -Wei On 01/30/2015 12:09 PM, Wei Huang wrote: > This patch extends trace_kvm_exit() to include KVM exit reasons > (i.e. EC of HSR). The tracing function then dumps both exit reason > and PC of vCPU, shown as the following. Tracing tools can use this > new exit_reason field to better understand the behavior of guest VMs. > > 886.301252: kvm_exit: HSR_EC: 0x0024, PC: 0xfffffe0000506b28 > > Signed-off-by: Wei Huang <wei@xxxxxxxxxx> > --- > arch/arm/kvm/arm.c | 2 +- > arch/arm/kvm/trace.h | 10 +++++++--- > 2 files changed, 8 insertions(+), 4 deletions(-) > > diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c > index 0b0d58a..4a00131 100644 > --- a/arch/arm/kvm/arm.c > +++ b/arch/arm/kvm/arm.c > @@ -533,7 +533,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) > > vcpu->mode = OUTSIDE_GUEST_MODE; > kvm_guest_exit(); > - trace_kvm_exit(*vcpu_pc(vcpu)); > + trace_kvm_exit(kvm_vcpu_trap_get_class(vcpu), *vcpu_pc(vcpu)); > /* > * We may have taken a host interrupt in HYP mode (ie > * while executing the guest). This interrupt is still > diff --git a/arch/arm/kvm/trace.h b/arch/arm/kvm/trace.h > index 5665a16..b7427d4 100644 > --- a/arch/arm/kvm/trace.h > +++ b/arch/arm/kvm/trace.h > @@ -25,18 +25,22 @@ TRACE_EVENT(kvm_entry, > ); > > TRACE_EVENT(kvm_exit, > - TP_PROTO(unsigned long vcpu_pc), > - TP_ARGS(vcpu_pc), > + TP_PROTO(unsigned int exit_reason, unsigned long vcpu_pc), > + TP_ARGS(exit_reason, vcpu_pc), > > TP_STRUCT__entry( > + __field( unsigned int, exit_reason ) > __field( unsigned long, vcpu_pc ) > ), > > TP_fast_assign( > + __entry->exit_reason = exit_reason; > __entry->vcpu_pc = vcpu_pc; > ), > > - TP_printk("PC: 0x%08lx", __entry->vcpu_pc) > + TP_printk("HSR_EC: 0x%04x, PC: 0x%08lx", > + __entry->exit_reason, > + __entry->vcpu_pc) > ); > > TRACE_EVENT(kvm_guest_fault, > _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
