#include <linux/kernel.h>#include <linux/string.h>#include <linux/bug.h>#include <linux/export.h>#include <asm/hypervisor.h>#include <asm/xen/hypercall.h> int xen_event_channel_op_compat(int cmd, void *arg){	struct evtchn_op op;	int rc; 	op.cmd = cmd;	memcpy(&op.u, arg, sizeof(op.u));	rc = _hypercall1(int, event_channel_op_compat, &op); 	switch (cmd) {	case EVTCHNOP_close:	case EVTCHNOP_send:	case EVTCHNOP_bind_vcpu:	case EVTCHNOP_unmask:		/* no output */		break; #define COPY_BACK(eop) \	case EVTCHNOP_##eop: \		memcpy(arg, &op.u.eop, sizeof(op.u.eop)); \		break 	COPY_BACK(bind_interdomain);	COPY_BACK(bind_virq);	COPY_BACK(bind_pirq);	COPY_BACK(status);	COPY_BACK(alloc_unbound);	COPY_BACK(bind_ipi);#undef COPY_BACK 	default:		WARN_ON(rc != -ENOSYS);		break;	} 	return rc;}EXPORT_SYMBOL_GPL(xen_event_channel_op_compat); int xen_physdev_op_compat(int cmd, void *arg){	struct physdev_op op;	int rc; 	op.cmd = cmd;	memcpy(&op.u, arg, sizeof(op.u));	rc = _hypercall1(int, physdev_op_compat, &op); 	switch (cmd) {	case PHYSDEVOP_IRQ_UNMASK_NOTIFY:	case PHYSDEVOP_set_iopl:	case PHYSDEVOP_set_iobitmap:	case PHYSDEVOP_apic_write:		/* no output */		break; #define COPY_BACK(pop, fld) \	case PHYSDEVOP_##pop: \		memcpy(arg, &op.u.fld, sizeof(op.u.fld)); \		break 	COPY_BACK(irq_status_query, irq_status_query);	COPY_BACK(apic_read, apic_op);	COPY_BACK(ASSIGN_VECTOR, irq_op);#undef COPY_BACK 	default:		WARN_ON(rc != -ENOSYS);		break;	} 	return rc;}EXPORT_SYMBOL_GPL(xen_physdev_op_compat);