44 static inline u64 synic_read_sint(struct kvm_vcpu_hv_synic *synic, int sint)  in synic_read_sint()  argument
46 	return atomic64_read(&synic->sint[sint]);  in synic_read_sint()
56 static bool synic_has_vector_connected(struct kvm_vcpu_hv_synic *synic,  in synic_has_vector_connected()  argument
61 	for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {  in synic_has_vector_connected()
62 		if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)  in synic_has_vector_connected()
68 static bool synic_has_vector_auto_eoi(struct kvm_vcpu_hv_synic *synic,  in synic_has_vector_auto_eoi()  argument
74 	for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {  in synic_has_vector_auto_eoi()
75 		sint_value = synic_read_sint(synic, i);  in synic_has_vector_auto_eoi()
83 static void synic_update_vector(struct kvm_vcpu_hv_synic *synic,  in synic_update_vector()  argument
89 	if (synic_has_vector_connected(synic, vector))  in synic_update_vector()
90 		__set_bit(vector, synic->vec_bitmap);  in synic_update_vector()
92 		__clear_bit(vector, synic->vec_bitmap);  in synic_update_vector()
94 	if (synic_has_vector_auto_eoi(synic, vector))  in synic_update_vector()
95 		__set_bit(vector, synic->auto_eoi_bitmap);  in synic_update_vector()
97 		__clear_bit(vector, synic->auto_eoi_bitmap);  in synic_update_vector()
100 static int synic_set_sint(struct kvm_vcpu_hv_synic *synic, int sint,  in synic_set_sint()  argument
122 	old_vector = synic_read_sint(synic, sint) & HV_SYNIC_SINT_VECTOR_MASK;  in synic_set_sint()
124 	atomic64_set(&synic->sint[sint], data);  in synic_set_sint()
126 	synic_update_vector(synic, old_vector);  in synic_set_sint()
128 	synic_update_vector(synic, vector);  in synic_set_sint()
131 	kvm_make_request(KVM_REQ_SCAN_IOAPIC, synic_to_vcpu(synic));  in synic_set_sint()
155 	struct kvm_vcpu_hv_synic *synic;  in synic_get()  local
160 	synic = vcpu_to_synic(vcpu);  in synic_get()
161 	return (synic->active) ? synic : NULL;  in synic_get()
167 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);  in kvm_hv_notify_acked_sint()  local
184 	gsi = atomic_read(&synic->sint_to_gsi[sint]);  in kvm_hv_notify_acked_sint()
190 static void synic_exit(struct kvm_vcpu_hv_synic *synic, u32 msr)  in synic_exit()  argument
192 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);  in synic_exit()
196 	hv_vcpu->exit.u.synic.msr = msr;  in synic_exit()
197 	hv_vcpu->exit.u.synic.control = synic->control;  in synic_exit()
198 	hv_vcpu->exit.u.synic.evt_page = synic->evt_page;  in synic_exit()
199 	hv_vcpu->exit.u.synic.msg_page = synic->msg_page;  in synic_exit()
204 static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,  in synic_set_msr()  argument
207 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);  in synic_set_msr()
210 	if (!synic->active && (!host || data))  in synic_set_msr()
218 		synic->control = data;  in synic_set_msr()
220 			synic_exit(synic, msr);  in synic_set_msr()
227 		synic->version = data;  in synic_set_msr()
231 		    !synic->dont_zero_synic_pages)  in synic_set_msr()
237 		synic->evt_page = data;  in synic_set_msr()
239 			synic_exit(synic, msr);  in synic_set_msr()
243 		    !synic->dont_zero_synic_pages)  in synic_set_msr()
249 		synic->msg_page = data;  in synic_set_msr()
251 			synic_exit(synic, msr);  in synic_set_msr()
256 		if (!synic->active)  in synic_set_msr()
259 		for (i = 0; i < ARRAY_SIZE(synic->sint); i++)  in synic_set_msr()
264 		ret = synic_set_sint(synic, msr - HV_X64_MSR_SINT0, data, host);  in synic_set_msr()
390 static int synic_get_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 *pdata,  in synic_get_msr()  argument
395 	if (!synic->active && !host)  in synic_get_msr()
401 		*pdata = synic->control;  in synic_get_msr()
404 		*pdata = synic->version;  in synic_get_msr()
407 		*pdata = synic->evt_page;  in synic_get_msr()
410 		*pdata = synic->msg_page;  in synic_get_msr()
416 		*pdata = atomic64_read(&synic->sint[msr - HV_X64_MSR_SINT0]);  in synic_get_msr()
425 static int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint)  in synic_set_irq()  argument
427 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);  in synic_set_irq()
434 	if (sint >= ARRAY_SIZE(synic->sint))  in synic_set_irq()
437 	vector = synic_get_sint_vector(synic_read_sint(synic, sint));  in synic_set_irq()
455 	struct kvm_vcpu_hv_synic *synic;  in kvm_hv_synic_set_irq()  local
457 	synic = synic_get(kvm, vpidx);  in kvm_hv_synic_set_irq()
458 	if (!synic)  in kvm_hv_synic_set_irq()
461 	return synic_set_irq(synic, sint);  in kvm_hv_synic_set_irq()
466 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);  in kvm_hv_synic_send_eoi()  local
471 	for (i = 0; i < ARRAY_SIZE(synic->sint); i++)  in kvm_hv_synic_send_eoi()
472 		if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)  in kvm_hv_synic_send_eoi()
478 	struct kvm_vcpu_hv_synic *synic;  in kvm_hv_set_sint_gsi()  local
480 	synic = synic_get(kvm, vpidx);  in kvm_hv_set_sint_gsi()
481 	if (!synic)  in kvm_hv_set_sint_gsi()
484 	if (sint >= ARRAY_SIZE(synic->sint_to_gsi))  in kvm_hv_set_sint_gsi()
487 	atomic_set(&synic->sint_to_gsi[sint], gsi);  in kvm_hv_set_sint_gsi()
509 static void synic_init(struct kvm_vcpu_hv_synic *synic)  in synic_init()  argument
513 	memset(synic, 0, sizeof(*synic));  in synic_init()
514 	synic->version = HV_SYNIC_VERSION_1;  in synic_init()
515 	for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {  in synic_init()
516 		atomic64_set(&synic->sint[i], HV_SYNIC_SINT_MASKED);  in synic_init()
517 		atomic_set(&synic->sint_to_gsi[i], -1);  in synic_init()
643 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);  in stimer_set_config()  local
645 	if (!synic->active && (!host || config))  in stimer_set_config()
667 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);  in stimer_set_count()  local
669 	if (!synic->active && (!host || count))  in stimer_set_count()
700 static int synic_deliver_msg(struct kvm_vcpu_hv_synic *synic, u32 sint,  in synic_deliver_msg()  argument
703 	struct kvm_vcpu *vcpu = synic_to_vcpu(synic);  in synic_deliver_msg()
709 	if (!(synic->msg_page & HV_SYNIC_SIMP_ENABLE))  in synic_deliver_msg()
712 	msg_page_gfn = synic->msg_page >> PAGE_SHIFT;  in synic_deliver_msg()
749 	r = synic_set_irq(synic, sint);  in synic_deliver_msg()
894 	synic_init(&hv_vcpu->synic);  in kvm_hv_vcpu_init()
910 	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);  in kvm_hv_activate_synic()  local
918 	synic->active = true;  in kvm_hv_activate_synic()
919 	synic->dont_zero_synic_pages = dont_zero_synic_pages;  in kvm_hv_activate_synic()
920 	synic->control = HV_SYNIC_CONTROL_ENABLE;  in kvm_hv_activate_synic()