cpus: prepare new CpusAccel cpu accelerator interface

The new interface starts unused, will start being used by the
next patches.

It provides methods for each accelerator to start a vcpu, kick a vcpu,
synchronize state, get cpu virtual clock and elapsed ticks.

In qemu_wait_io_event, make it clear that APC is used only for HAX
on Windows.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/include/sysemu/cpu-timers.h b/include/sysemu/cpu-timers.h
index 7726e00..ed6ee5c 100644
--- a/include/sysemu/cpu-timers.h
+++ b/include/sysemu/cpu-timers.h
@@ -70,9 +70,8 @@ void cpu_enable_ticks(void);
 void cpu_disable_ticks(void);
 
 /*
- * return the time elapsed in VM between vm_start and vm_stop.  Unless
- * icount is active, cpu_get_ticks() uses units of the host CPU cycle
- * counter.
+ * return the time elapsed in VM between vm_start and vm_stop.
+ * cpu_get_ticks() uses units of the host CPU cycle counter.
  */
 int64_t cpu_get_ticks(void);
 
@@ -84,4 +83,8 @@ int64_t cpu_get_clock(void);
 
 void qemu_timer_notify_cb(void *opaque, QEMUClockType type);
 
+/* get the VIRTUAL clock and VM elapsed ticks via the cpus accel interface */
+int64_t cpus_get_virtual_clock(void);
+int64_t cpus_get_elapsed_ticks(void);
+
 #endif /* SYSEMU_CPU_TIMERS_H */