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Re: [Xen-devel] [PATCH v3 2/2] xentrace: Add TRC_HVM_EMUL



On 04/07/2014 11:38 PM, Don Slutz wrote:
This add a set of trace events that track the setup of various
emulated devices related to timers in domU.

This set is hpet, pit (i8253, i8254), rtc (MC146818), apic (lapic),
and pic (i8259).  The pmtimer is not traced since it does not have a
changeable rate.

Signed-off-by: Don Slutz <dslutz@xxxxxxxxxxx>
Reviewed-by: Tim Deegan <tim@xxxxxxx>

Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>

Thanks!


---
v3:
   Use TRC_HVM_EMUL instead of TRC_HVM_VCHIP.
   Handle 64 bit correctly.

Note: xentrace_format only supports 64bit output in hex.

  tools/xentrace/formats          | 18 ++++++++++++++++++
  xen/arch/x86/hvm/hpet.c         |  7 +++++++
  xen/arch/x86/hvm/i8254.c        |  9 +++++++++
  xen/arch/x86/hvm/rtc.c          |  9 +++++++++
  xen/arch/x86/hvm/vlapic.c       | 19 +++++++++++++++++++
  xen/arch/x86/hvm/vpic.c         | 11 +++++++++++
  xen/include/asm-x86/hvm/trace.h |  7 +++++++
  xen/include/public/trace.h      | 24 ++++++++++++++++++++++--
  8 files changed, 102 insertions(+), 2 deletions(-)

diff --git a/tools/xentrace/formats b/tools/xentrace/formats
index 67fd42d..da658bf 100644
--- a/tools/xentrace/formats
+++ b/tools/xentrace/formats
@@ -152,3 +152,21 @@
  0x00802006  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  assign_vector [ irq = %(1)d = 
vector 0x%(2)x, CPU mask: 0x%(3)08x ]
  0x00802007  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  bogus_vector [ 0x%(1)x ]
  0x00802008  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  do_irq [ irq = %(1)d, began = 
%(2)dus, ended = %(3)dus ]
+
+0x00084001  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  hpet create [ tn = %(1)d, irq 
= %(2)d, delta = 0x%(4)08x%(3)08x, period = 0x%(6)08x%(5)08x ]
+0x00084002  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  pit create [ delta = 
0x%(1)016x, period = 0x%(2)016x ]
+0x00084003  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  rtc create [ delta = 
0x%(1)016x , period = 0x%(2)016x ]
+0x00084004  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vlapic create [ delta = 
0x%(2)08x%(1)08x , period = 0x%(4)08x%(3)08x, irq = %(5)d ]
+0x00084005  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  hpet destroy [ tn = %(1)d ]
+0x00084006  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  pit destroy  [ ]
+0x00084007  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  rtc destroy [ ]
+0x00084008  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vlapic destroy [ ]
+0x00084009  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  pit callback [ ]
+0x0008400a  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vlapic callback [ ]
+0x0008400b  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vpic_update_int_output [ 
int_output = %(1)d, is_master = %(2)d, irq = %(3)d ]
+0x0008400c  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vpic vcpu_kick [ irq = %(1)d ]
+0x0008400d  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  __vpic_intack [ is_master = 
%(1)d, irq = %(2)d ]
+0x0008400e  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vpic_irq_positive_edge [ irq = 
%(1)d ]
+0x0008400f  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vpic_irq_negative_edge [ irq = 
%(1)d ]
+0x00084010  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vpic_ack_pending_irq [ 
accept_pic_intr = %(1)d, int_output = %(2)d ]
+0x00084011  CPU%(cpu)d  %(tsc)d (+%(reltsc)8d)  vlapic_accept_pic_intr [ 
i8259_target = %(1)d, accept_pic_int = %(2)d ]
diff --git a/xen/arch/x86/hvm/hpet.c b/xen/arch/x86/hvm/hpet.c
index e1e769a..42c93f3 100644
--- a/xen/arch/x86/hvm/hpet.c
+++ b/xen/arch/x86/hvm/hpet.c
@@ -20,10 +20,12 @@
  #include <asm/hvm/vpt.h>
  #include <asm/hvm/io.h>
  #include <asm/hvm/support.h>
+#include <asm/hvm/trace.h>
  #include <asm/current.h>
  #include <asm/hpet.h>
  #include <xen/sched.h>
  #include <xen/event.h>
+#include <xen/trace.h>

  #define domain_vhpet(x) (&(x)->arch.hvm_domain.pl_time.vhpet)
  #define vcpu_vhpet(x)   (domain_vhpet((x)->domain))
@@ -191,6 +193,7 @@ static void hpet_stop_timer(HPETState *h, unsigned int tn)
  {
      ASSERT(tn < HPET_TIMER_NUM);
      ASSERT(spin_is_locked(&h->lock));
+    TRACE_1D(TRC_HVM_EMUL_HPET_STOP_TIMER, tn);
      destroy_periodic_time(&h->pt[tn]);
      /* read the comparator to get it updated so a read while stopped will
       * return the expected value. */
@@ -255,6 +258,10 @@ static void hpet_set_timer(HPETState *h, unsigned int tn)
       * being enabled (now).
       */
      oneshot = !timer_is_periodic(h, tn);
+    TRACE_2_LONG_4D(TRC_HVM_EMUL_HPET_START_TIMER, tn, irq,
+                    TRC_PAR_LONG(hpet_tick_to_ns(h, diff)),
+                    TRC_PAR_LONG(oneshot ? 0LL :
+                                 hpet_tick_to_ns(h, h->hpet.period[tn])));
      create_periodic_time(vhpet_vcpu(h), &h->pt[tn],
                           hpet_tick_to_ns(h, diff),
                           oneshot ? 0 : hpet_tick_to_ns(h, h->hpet.period[tn]),
diff --git a/xen/arch/x86/hvm/i8254.c b/xen/arch/x86/hvm/i8254.c
index 6e66b49..c4f7527 100644
--- a/xen/arch/x86/hvm/i8254.c
+++ b/xen/arch/x86/hvm/i8254.c
@@ -31,6 +31,7 @@
  #include <xen/lib.h>
  #include <xen/errno.h>
  #include <xen/sched.h>
+#include <xen/trace.h>
  #include <asm/time.h>
  #include <asm/hvm/hvm.h>
  #include <asm/hvm/io.h>
@@ -159,6 +160,7 @@ static int pit_get_gate(PITState *pit, int channel)
  static void pit_time_fired(struct vcpu *v, void *priv)
  {
      uint64_t *count_load_time = priv;
+    TRACE_0D(TRC_HVM_EMUL_PIT_TIMER_CB);
      *count_load_time = get_guest_time(v);
  }

@@ -188,16 +190,19 @@ static void pit_load_count(PITState *pit, int channel, 
int val)
      case 2:
      case 3:
          /* Periodic timer. */
+        TRACE_2D(TRC_HVM_EMUL_PIT_START_TIMER, period, period);
          create_periodic_time(v, &pit->pt0, period, period, 0, pit_time_fired,
                               &pit->count_load_time[channel]);
          break;
      case 1:
      case 4:
          /* One-shot timer. */
+        TRACE_2D(TRC_HVM_EMUL_PIT_START_TIMER, period, 0);
          create_periodic_time(v, &pit->pt0, period, 0, 0, pit_time_fired,
                               &pit->count_load_time[channel]);
          break;
      default:
+        TRACE_0D(TRC_HVM_EMUL_PIT_STOP_TIMER);
          destroy_periodic_time(&pit->pt0);
          break;
      }
@@ -377,6 +382,7 @@ static uint32_t pit_ioport_read(struct PITState *pit, 
uint32_t addr)

  void pit_stop_channel0_irq(PITState *pit)
  {
+    TRACE_0D(TRC_HVM_EMUL_PIT_STOP_TIMER);
      spin_lock(&pit->lock);
      destroy_periodic_time(&pit->pt0);
      spin_unlock(&pit->lock);
@@ -431,6 +437,7 @@ void pit_reset(struct domain *d)
      struct hvm_hw_pit_channel *s;
      int i;

+    TRACE_0D(TRC_HVM_EMUL_PIT_STOP_TIMER);
      destroy_periodic_time(&pit->pt0);
      pit->pt0.source = PTSRC_isa;

@@ -465,6 +472,8 @@ void pit_init(struct domain *d, unsigned long cpu_khz)
  void pit_deinit(struct domain *d)
  {
      PITState *pit = domain_vpit(d);
+
+    TRACE_0D(TRC_HVM_EMUL_PIT_STOP_TIMER);
      destroy_periodic_time(&pit->pt0);
  }

diff --git a/xen/arch/x86/hvm/rtc.c b/xen/arch/x86/hvm/rtc.c
index 7cd0cf4..3fab660 100644
--- a/xen/arch/x86/hvm/rtc.c
+++ b/xen/arch/x86/hvm/rtc.c
@@ -27,6 +27,7 @@
  #include <asm/hvm/io.h>
  #include <asm/hvm/support.h>
  #include <asm/current.h>
+#include <xen/trace.h>

  #define USEC_PER_SEC    1000000UL
  #define NS_PER_USEC     1000UL
@@ -91,6 +92,7 @@ static void rtc_pf_callback(struct vcpu *v, void *opaque)
           && ++(s->pt_dead_ticks) >= 10 )
      {
          /* VM is ignoring its RTC; no point in running the timer */
+        TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
          destroy_periodic_time(&s->pt);
          s->period = 0;
      }
@@ -152,8 +154,11 @@ static void rtc_timer_update(RTCState *s)
                  else
                      delta = period - ((now - s->start_time) % period);
                  if ( s->hw.cmos_data[RTC_REG_B] & RTC_PIE )
+                {
+                    TRACE_2D(TRC_HVM_EMUL_RTC_START_TIMER, delta, period);
                      create_periodic_time(v, &s->pt, delta, period,
                                           RTC_IRQ, rtc_pf_callback, s);
+                }
                  else
                      s->check_ticks_since = now;
              }
@@ -161,6 +166,7 @@ static void rtc_timer_update(RTCState *s)
          }
          /* fall through */
      default:
+        TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
          destroy_periodic_time(&s->pt);
          s->period = 0;
          break;
@@ -513,6 +519,7 @@ static int rtc_ioport_write(void *opaque, uint32_t addr, 
uint32_t data)
          rtc_update_irq(s);
          if ( (data ^ orig) & RTC_PIE )
          {
+            TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
              destroy_periodic_time(&s->pt);
              s->period = 0;
              rtc_timer_update(s);
@@ -772,6 +779,7 @@ void rtc_reset(struct domain *d)
  {
      RTCState *s = domain_vrtc(d);

+    TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
      destroy_periodic_time(&s->pt);
      s->period = 0;
      s->pt.source = PTSRC_isa;
@@ -813,6 +821,7 @@ void rtc_deinit(struct domain *d)

      spin_barrier(&s->lock);

+    TRACE_0D(TRC_HVM_EMUL_RTC_STOP_TIMER);
      destroy_periodic_time(&s->pt);
      kill_timer(&s->update_timer);
      kill_timer(&s->update_timer2);
diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c
index fc307c0..cd7e872 100644
--- a/xen/arch/x86/hvm/vlapic.c
+++ b/xen/arch/x86/hvm/vlapic.c
@@ -611,6 +611,7 @@ int hvm_x2apic_msr_read(struct vcpu *v, unsigned int msr, 
uint64_t *msr_content)

  static void vlapic_pt_cb(struct vcpu *v, void *data)
  {
+    TRACE_0D(TRC_HVM_EMUL_LAPIC_TIMER_CB);
      *(s_time_t *)data = hvm_get_guest_time(v);
  }

@@ -712,6 +713,7 @@ static int vlapic_reg_write(struct vcpu *v,
          if ( (vlapic_get_reg(vlapic, offset) & APIC_TIMER_MODE_MASK) !=
               (val & APIC_TIMER_MODE_MASK) )
          {
+            TRACE_0D(TRC_HVM_EMUL_LAPIC_STOP_TIMER);
              destroy_periodic_time(&vlapic->pt);
              vlapic_set_reg(vlapic, APIC_TMICT, 0);
              vlapic_set_reg(vlapic, APIC_TMCCT, 0);
@@ -746,12 +748,16 @@ static int vlapic_reg_write(struct vcpu *v,
          vlapic_set_reg(vlapic, APIC_TMICT, val);
          if ( val == 0 )
          {
+            TRACE_0D(TRC_HVM_EMUL_LAPIC_STOP_TIMER);
              destroy_periodic_time(&vlapic->pt);
              break;
          }

          period = ((uint64_t)APIC_BUS_CYCLE_NS *
                    (uint32_t)val * vlapic->hw.timer_divisor);
+        TRACE_2_LONG_3D(TRC_HVM_EMUL_LAPIC_START_TIMER, TRC_PAR_LONG(period),
+                 TRC_PAR_LONG(vlapic_lvtt_period(vlapic) ? period : 0LL),
+                 vlapic->pt.irq);
          create_periodic_time(current, &vlapic->pt, period,
                               vlapic_lvtt_period(vlapic) ? period : 0,
                               vlapic->pt.irq,
@@ -950,6 +956,8 @@ void vlapic_tdt_msr_set(struct vlapic *vlapic, uint64_t 
value)

          vlapic->hw.tdt_msr = value;
          /* .... reprogram tdt timer */
+        TRACE_2_LONG_3D(TRC_HVM_EMUL_LAPIC_START_TIMER, TRC_PAR_LONG(delta),
+                        TRC_PAR_LONG(0LL), vlapic->pt.irq);
          create_periodic_time(v, &vlapic->pt, delta, 0,
                               vlapic->pt.irq, vlapic_tdt_pt_cb,
                               &vlapic->timer_last_update);
@@ -962,6 +970,8 @@ void vlapic_tdt_msr_set(struct vlapic *vlapic, uint64_t 
value)
          /* trigger a timer event if needed */
          if ( value > 0 )
          {
+            TRACE_2_LONG_3D(TRC_HVM_EMUL_LAPIC_START_TIMER, TRC_PAR_LONG(0LL),
+                            TRC_PAR_LONG(0LL), vlapic->pt.irq);
              create_periodic_time(v, &vlapic->pt, 0, 0,
                                   vlapic->pt.irq, vlapic_tdt_pt_cb,
                                   &vlapic->timer_last_update);
@@ -970,6 +980,7 @@ void vlapic_tdt_msr_set(struct vlapic *vlapic, uint64_t 
value)
          else
          {
              /* .... stop tdt timer */
+            TRACE_0D(TRC_HVM_EMUL_LAPIC_STOP_TIMER);
              destroy_periodic_time(&vlapic->pt);
          }

@@ -1003,6 +1014,10 @@ static int __vlapic_accept_pic_intr(struct vcpu *v)

  int vlapic_accept_pic_intr(struct vcpu *v)
  {
+    TRACE_2D(TRC_HVM_EMUL_LAPIC_PIC_INTR,
+             (v == v->domain->arch.hvm_domain.i8259_target),
+             v ? __vlapic_accept_pic_intr(v) : -1);
+
      return ((v == v->domain->arch.hvm_domain.i8259_target) &&
              __vlapic_accept_pic_intr(v));
  }
@@ -1106,6 +1121,7 @@ void vlapic_reset(struct vlapic *vlapic)
      vlapic_set_reg(vlapic, APIC_SPIV, 0xff);
      vlapic->hw.disabled |= VLAPIC_SW_DISABLED;

+    TRACE_0D(TRC_HVM_EMUL_LAPIC_STOP_TIMER);
      destroy_periodic_time(&vlapic->pt);
  }

@@ -1129,6 +1145,8 @@ static void lapic_rearm(struct vlapic *s)

      period = ((uint64_t)APIC_BUS_CYCLE_NS *
                (uint32_t)tmict * s->hw.timer_divisor);
+    TRACE_2_LONG_3D(TRC_HVM_EMUL_LAPIC_START_TIMER, TRC_PAR_LONG(period),
+             TRC_PAR_LONG(vlapic_lvtt_period(s) ? period : 0LL), s->pt.irq);
      create_periodic_time(vlapic_vcpu(s), &s->pt, period,
                           vlapic_lvtt_period(s) ? period : 0,
                           s->pt.irq,
@@ -1275,6 +1293,7 @@ void vlapic_destroy(struct vcpu *v)
      struct vlapic *vlapic = vcpu_vlapic(v);

      tasklet_kill(&vlapic->init_sipi.tasklet);
+    TRACE_0D(TRC_HVM_EMUL_LAPIC_STOP_TIMER);
      destroy_periodic_time(&vlapic->pt);
      unmap_domain_page_global(vlapic->regs);
      free_domheap_page(vlapic->regs_page);
diff --git a/xen/arch/x86/hvm/vpic.c b/xen/arch/x86/hvm/vpic.c
index 5ca513c..2c6e6e5 100644
--- a/xen/arch/x86/hvm/vpic.c
+++ b/xen/arch/x86/hvm/vpic.c
@@ -30,6 +30,7 @@
  #include <xen/lib.h>
  #include <xen/errno.h>
  #include <xen/sched.h>
+#include <xen/trace.h>
  #include <asm/hvm/hvm.h>
  #include <asm/hvm/io.h>
  #include <asm/hvm/support.h>
@@ -99,6 +100,8 @@ static void vpic_update_int_output(struct hvm_hw_vpic *vpic)
      ASSERT(vpic_is_locked(vpic));

      irq = vpic_get_highest_priority_irq(vpic);
+    TRACE_3D(TRC_HVM_EMUL_PIC_INT_OUTPUT, vpic->int_output, vpic->is_master,
+             irq);
      if ( vpic->int_output == (irq >= 0) )
          return;

@@ -112,7 +115,10 @@ static void vpic_update_int_output(struct hvm_hw_vpic 
*vpic)
              /* Master INT line is connected in Virtual Wire Mode. */
              struct vcpu *v = vpic_domain(vpic)->arch.hvm_domain.i8259_target;
              if ( v != NULL )
+            {
+                TRACE_1D(TRC_HVM_EMUL_PIC_KICK, irq);
                  vcpu_kick(v);
+            }
          }
          else
          {
@@ -135,6 +141,7 @@ static void __vpic_intack(struct hvm_hw_vpic *vpic, int irq)

      ASSERT(vpic_is_locked(vpic));

+    TRACE_2D(TRC_HVM_EMUL_PIC_INTACK, vpic->is_master, irq);
      /* Edge-triggered: clear the IRR (forget the edge). */
      if ( !(vpic->elcr & mask) )
          vpic->irr &= ~mask;
@@ -434,6 +441,7 @@ void vpic_irq_positive_edge(struct domain *d, int irq)
      ASSERT(irq <= 15);
      ASSERT(vpic_is_locked(vpic));

+    TRACE_1D(TRC_HVM_EMUL_PIC_POSEDGE, irq);
      if ( irq == 2 )
          return;

@@ -450,6 +458,7 @@ void vpic_irq_negative_edge(struct domain *d, int irq)
      ASSERT(irq <= 15);
      ASSERT(vpic_is_locked(vpic));

+    TRACE_1D(TRC_HVM_EMUL_PIC_NEGEDGE, irq);
      if ( irq == 2 )
          return;

@@ -463,6 +472,8 @@ int vpic_ack_pending_irq(struct vcpu *v)
      int irq, vector;
      struct hvm_hw_vpic *vpic = &v->domain->arch.hvm_domain.vpic[0];

+    TRACE_2D(TRC_HVM_EMUL_PIC_PEND_IRQ_CALL, vlapic_accept_pic_intr(v),
+             vpic->int_output);
      if ( !vlapic_accept_pic_intr(v) || !vpic->int_output )
          return -1;

diff --git a/xen/include/asm-x86/hvm/trace.h b/xen/include/asm-x86/hvm/trace.h
index 9d7e00b..de802a6 100644
--- a/xen/include/asm-x86/hvm/trace.h
+++ b/xen/include/asm-x86/hvm/trace.h
@@ -58,6 +58,13 @@

  #define TRC_PAR_LONG(par) ((par)&0xFFFFFFFF),((par)>>32)

+#define TRACE_2_LONG_2D(_e, d1, d2, ...) \
+    TRACE_4D(_e, d1, d2)
+#define TRACE_2_LONG_3D(_e, d1, d2, d3, ...) \
+    TRACE_5D(_e, d1, d2, d3)
+#define TRACE_2_LONG_4D(_e, d1, d2, d3, d4, ...) \
+    TRACE_6D(_e, d1, d2, d3, d4)
+
  #define HVMTRACE_ND(evt, modifier, cycles, count, d1, d2, d3, d4, d5, d6) \
      do {                                                                  \
          if ( unlikely(tb_init_done) && DO_TRC_HVM_ ## evt )               \
diff --git a/xen/include/public/trace.h b/xen/include/public/trace.h
index e2f60a6..cfcf4aa 100644
--- a/xen/include/public/trace.h
+++ b/xen/include/public/trace.h
@@ -50,8 +50,9 @@
  #define TRC_SUBCLS_SHIFT 12

  /* trace subclasses for SVM */
-#define TRC_HVM_ENTRYEXIT 0x00081000   /* VMENTRY and #VMEXIT       */
-#define TRC_HVM_HANDLER   0x00082000   /* various HVM handlers      */
+#define TRC_HVM_ENTRYEXIT   0x00081000   /* VMENTRY and #VMEXIT       */
+#define TRC_HVM_HANDLER     0x00082000   /* various HVM handlers      */
+#define TRC_HVM_EMUL        0x00084000   /* emulated devices */

  #define TRC_SCHED_MIN       0x00021000   /* Just runstate changes */
  #define TRC_SCHED_CLASS     0x00022000   /* Scheduler-specific    */
@@ -229,6 +230,25 @@
  #define TRC_HVM_IOPORT_WRITE    (TRC_HVM_HANDLER + 0x216)
  #define TRC_HVM_IOMEM_WRITE     (TRC_HVM_HANDLER + 0x217)

+/* Trace events for emulated devices */
+#define TRC_HVM_EMUL_HPET_START_TIMER  (TRC_HVM_EMUL + 0x1)
+#define TRC_HVM_EMUL_PIT_START_TIMER   (TRC_HVM_EMUL + 0x2)
+#define TRC_HVM_EMUL_RTC_START_TIMER   (TRC_HVM_EMUL + 0x3)
+#define TRC_HVM_EMUL_LAPIC_START_TIMER (TRC_HVM_EMUL + 0x4)
+#define TRC_HVM_EMUL_HPET_STOP_TIMER   (TRC_HVM_EMUL + 0x5)
+#define TRC_HVM_EMUL_PIT_STOP_TIMER    (TRC_HVM_EMUL + 0x6)
+#define TRC_HVM_EMUL_RTC_STOP_TIMER    (TRC_HVM_EMUL + 0x7)
+#define TRC_HVM_EMUL_LAPIC_STOP_TIMER  (TRC_HVM_EMUL + 0x8)
+#define TRC_HVM_EMUL_PIT_TIMER_CB      (TRC_HVM_EMUL + 0x9)
+#define TRC_HVM_EMUL_LAPIC_TIMER_CB    (TRC_HVM_EMUL + 0xA)
+#define TRC_HVM_EMUL_PIC_INT_OUTPUT    (TRC_HVM_EMUL + 0xB)
+#define TRC_HVM_EMUL_PIC_KICK          (TRC_HVM_EMUL + 0xC)
+#define TRC_HVM_EMUL_PIC_INTACK        (TRC_HVM_EMUL + 0xD)
+#define TRC_HVM_EMUL_PIC_POSEDGE       (TRC_HVM_EMUL + 0xE)
+#define TRC_HVM_EMUL_PIC_NEGEDGE       (TRC_HVM_EMUL + 0xF)
+#define TRC_HVM_EMUL_PIC_PEND_IRQ_CALL (TRC_HVM_EMUL + 0x10)
+#define TRC_HVM_EMUL_LAPIC_PIC_INTR    (TRC_HVM_EMUL + 0x11)
+
  /* trace events for per class */
  #define TRC_PM_FREQ_CHANGE      (TRC_HW_PM + 0x01)
  #define TRC_PM_IDLE_ENTRY       (TRC_HW_PM + 0x02)



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