static inline void
evt_do_hypervisor_callback(unsigned int port, unsigned int l1i,
unsigned int l2i, void *args)
{
KASSERT(args != NULL);
struct cpu_info *ci = curcpu();
struct intrframe *regs = args;
#ifdef PORT_DEBUG
if (port == PORT_DEBUG)
printf("do_hypervisor_callback event %d\n", port);
#endif
if (evtsource[port]) {
ci->ci_idepth++;
evtchn_do_event(port, regs);
ci->ci_idepth--;
}
#ifdef DOM0OPS
else {
if (ci->ci_ilevel < IPL_HIGH) {
/* fast path */
int oipl = ci->ci_ilevel;
ci->ci_ilevel = IPL_HIGH;
ci->ci_idepth++;
xenevt_event(port);
ci->ci_idepth--;
ci->ci_ilevel = oipl;
} else {
/* set pending event */
xenevt_setipending(l1i, l2i);
}
}
#endif
}
/* process pending events */
static int
xenevt_processevt(void *v)
{
long l1, l2;
int l1i, l2i;
int port;
l1 = xen_atomic_xchg(&xenevt_ev1, 0);
while ((l1i = xen_ffs(l1)) != 0) {
l1i--;
l1 &= ~(1UL << l1i);
l2 = xen_atomic_xchg(&xenevt_ev2[l1i], 0);
while ((l2i = xen_ffs(l2)) != 0) {
l2i--;
l2 &= ~(1UL << l2i);
port = (l1i << LONG_SHIFT) + l2i;
xenevt_event(port);
}
}
return 0;
}
