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/******************************************************************************
* event.h
*
* A nice interface for passing asynchronous events to guest OSes.
* (architecture-dependent part)
*
*/
#ifndef __ASM_EVENT_H__
#define __ASM_EVENT_H__
#include <xen/shared.h>
void vcpu_kick(struct vcpu *v);
void vcpu_mark_events_pending(struct vcpu *v);
static inline int vcpu_event_delivery_is_enabled(struct vcpu *v)
{
return !vcpu_info(v, evtchn_upcall_mask);
}
int hvm_local_events_need_delivery(struct vcpu *v);
static always_inline bool local_events_need_delivery(void)
{
struct vcpu *v = current;
ASSERT(!is_idle_vcpu(v));
return (is_hvm_vcpu(v) ? hvm_local_events_need_delivery(v) :
(vcpu_info(v, evtchn_upcall_pending) &&
!vcpu_info(v, evtchn_upcall_mask)));
}
static inline void local_event_delivery_disable(void)
{
vcpu_info(current, evtchn_upcall_mask) = 1;
}
static inline void local_event_delivery_enable(void)
{
vcpu_info(current, evtchn_upcall_mask) = 0;
}
/* No arch specific virq definition now. Default to global. */
static inline bool arch_virq_is_global(unsigned int virq)
{
return true;
}
#ifdef CONFIG_PV_SHIM
# include <asm/pv/shim.h>
# define arch_evtchn_is_special(chn) \
(pv_shim && (chn)->port && (chn)->state == ECS_RESERVED)
#endif
#endif
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