x86/kvm/hyperv.c

111 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
140 		hv->synic_auto_eoi_used++;
142 		hv->synic_auto_eoi_used--;
150 					 !!hv->synic_auto_eoi_used);
338 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
341 		hv->hv_syndbg.control.status =
570 	struct kvm_hv *hv = to_kvm_hv(kvm);
578 	if (hv->hv_tsc_page_status != HV_TSC_PAGE_SET)
583 	return mul_u64_u64_shr(tsc, hv->tsc_ref.tsc_scale, 64)
584 		+ hv->tsc_ref.tsc_offset;
1035 	struct kvm_hv *hv = to_kvm_hv(kvm);
1036 	size_t size = ARRAY_SIZE(hv->hv_crash_param);
1041 	*pdata = hv->hv_crash_param[array_index_nospec(index, size)];
1047 	struct kvm_hv *hv = to_kvm_hv(kvm);
1049 	*pdata = hv->hv_crash_ctl;
1055 	struct kvm_hv *hv = to_kvm_hv(kvm);
1057 	hv->hv_crash_ctl = data & HV_CRASH_CTL_CRASH_NOTIFY;
1064 	struct kvm_hv *hv = to_kvm_hv(kvm);
1065 	size_t size = ARRAY_SIZE(hv->hv_crash_param);
1070 	hv->hv_crash_param[array_index_nospec(index, size)] = data;
1152 static inline bool tsc_page_update_unsafe(struct kvm_hv *hv)
1154 	return (hv->hv_tsc_page_status != HV_TSC_PAGE_GUEST_CHANGED) &&
1155 		hv->hv_tsc_emulation_control;
1161 	struct kvm_hv *hv = to_kvm_hv(kvm);
1165 	BUILD_BUG_ON(sizeof(tsc_seq) != sizeof(hv->tsc_ref.tsc_sequence));
1168 	mutex_lock(&hv->hv_lock);
1170 	if (hv->hv_tsc_page_status == HV_TSC_PAGE_BROKEN ||
1171 	    hv->hv_tsc_page_status == HV_TSC_PAGE_SET ||
1172 	    hv->hv_tsc_page_status == HV_TSC_PAGE_UNSET)
1175 	if (!(hv->hv_tsc_page & HV_X64_MSR_TSC_REFERENCE_ENABLE))
1178 	gfn = hv->hv_tsc_page >> HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT;
1187 	if (tsc_seq && tsc_page_update_unsafe(hv)) {
1188 		if (kvm_read_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref)))
1191 		hv->hv_tsc_page_status = HV_TSC_PAGE_SET;
1199 	hv->tsc_ref.tsc_sequence = 0;
1201 			    &hv->tsc_ref, sizeof(hv->tsc_ref.tsc_sequence)))
1204 	if (!compute_tsc_page_parameters(hv_clock, &hv->tsc_ref))
1209 	if (kvm_write_guest(kvm, gfn_to_gpa(gfn), &hv->tsc_ref, sizeof(hv->tsc_ref)))
1222 	hv->tsc_ref.tsc_sequence = tsc_seq;
1224 			    &hv->tsc_ref, sizeof(hv->tsc_ref.tsc_sequence)))
1227 	hv->hv_tsc_page_status = HV_TSC_PAGE_SET;
1231 	hv->hv_tsc_page_status = HV_TSC_PAGE_BROKEN;
1233 	mutex_unlock(&hv->hv_lock);
1238 	struct kvm_hv *hv = to_kvm_hv(kvm);
1240 	mutex_lock(&hv->hv_lock);
1242 	if (hv->hv_tsc_page_status == HV_TSC_PAGE_SET &&
1243 	    !tsc_page_update_unsafe(hv))
1244 		hv->hv_tsc_page_status = HV_TSC_PAGE_HOST_CHANGED;
1246 	mutex_unlock(&hv->hv_lock);
1338 	struct kvm_hv *hv = to_kvm_hv(kvm);
1341 	if (hv->xsaves_xsavec_checked)
1344 	if ((hv->hv_guest_os_id & KVM_HV_WIN2016_GUEST_ID_MASK) !=
1348 	hv->xsaves_xsavec_checked = true;
1364 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
1367 	    hv->xsaves_xsavec_checked)
1370 	mutex_lock(&hv->hv_lock);
1372 	mutex_unlock(&hv->hv_lock);
1379 	struct kvm_hv *hv = to_kvm_hv(kvm);
1386 		hv->hv_guest_os_id = data;
1388 		if (!hv->hv_guest_os_id)
1389 			hv->hv_hypercall &= ~HV_X64_MSR_HYPERCALL_ENABLE;
1397 		if (!hv->hv_guest_os_id)
1400 			hv->hv_hypercall = data;
1429 		hv->hv_hypercall = data;
1433 		hv->hv_tsc_page = data;
1434 		if (hv->hv_tsc_page & HV_X64_MSR_TSC_REFERENCE_ENABLE) {
1436 				hv->hv_tsc_page_status = HV_TSC_PAGE_GUEST_CHANGED;
1438 				hv->hv_tsc_page_status = HV_TSC_PAGE_HOST_CHANGED;
1441 			hv->hv_tsc_page_status = HV_TSC_PAGE_UNSET;
1453 			vcpu_debug(vcpu, "hv crash (0x%llx 0x%llx 0x%llx 0x%llx 0x%llx)\n",
1454 				   hv->hv_crash_param[0],
1455 				   hv->hv_crash_param[1],
1456 				   hv->hv_crash_param[2],
1457 				   hv->hv_crash_param[3],
1458 				   hv->hv_crash_param[4]);
1471 		hv->hv_reenlightenment_control = data;
1474 		hv->hv_tsc_emulation_control = data;
1480 		hv->hv_tsc_emulation_status = data;
1493 		if (!host && hv->hv_invtsc_control && !data)
1496 		hv->hv_invtsc_control = data;
1527 		struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
1543 			atomic_inc(&hv->num_mismatched_vp_indexes);
1545 			atomic_dec(&hv->num_mismatched_vp_indexes);
1635 	struct kvm_hv *hv = to_kvm_hv(kvm);
1642 		data = hv->hv_guest_os_id;
1645 		data = hv->hv_hypercall;
1651 		data = hv->hv_tsc_page;
1663 		data = hv->hv_reenlightenment_control;
1666 		data = hv->hv_tsc_emulation_control;
1669 		data = hv->hv_tsc_emulation_status;
1672 		data = hv->hv_invtsc_control;
1752 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
1763 		mutex_lock(&hv->hv_lock);
1765 		mutex_unlock(&hv->hv_lock);
1773 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
1784 		mutex_lock(&hv->hv_lock);
1786 		mutex_unlock(&hv->hv_lock);
1795 	struct kvm_hv *hv = to_kvm_hv(kvm);
1796 	bool has_mismatch = atomic_read(&hv->num_mismatched_vp_indexes);
2406 	struct kvm_hv *hv = to_kvm_hv(vcpu->kvm);
2436 	eventfd = idr_find(&hv->conn_to_evt, hc->ingpa);
2691 	struct kvm_hv *hv = to_kvm_hv(kvm);
2693 	mutex_init(&hv->hv_lock);
2694 	idr_init(&hv->conn_to_evt);
2699 	struct kvm_hv *hv = to_kvm_hv(kvm);
2703 	idr_for_each_entry(&hv->conn_to_evt, eventfd, i)
2705 	idr_destroy(&hv->conn_to_evt);
2710 	struct kvm_hv *hv = to_kvm_hv(kvm);
2718 	mutex_lock(&hv->hv_lock);
2719 	ret = idr_alloc(&hv->conn_to_evt, eventfd, conn_id, conn_id + 1,
2721 	mutex_unlock(&hv->hv_lock);
2734 	struct kvm_hv *hv = to_kvm_hv(kvm);
2737 	mutex_lock(&hv->hv_lock);
2738 	eventfd = idr_remove(&hv->conn_to_evt, conn_id);
2739 	mutex_unlock(&hv->hv_lock);