2 * QEMU PowerPC sPAPR XIVE interrupt controller model
4 * Copyright (c) 2017-2019, IBM Corporation.
6 * This code is licensed under the GPL version 2 or later. See the
7 * COPYING file in the top-level directory.
10 #include "qemu/osdep.h"
12 #include "qemu/error-report.h"
13 #include "qapi/error.h"
14 #include "target/ppc/cpu.h"
15 #include "sysemu/cpus.h"
16 #include "sysemu/kvm.h"
17 #include "sysemu/runstate.h"
18 #include "hw/ppc/spapr.h"
19 #include "hw/ppc/spapr_cpu_core.h"
20 #include "hw/ppc/spapr_xive.h"
21 #include "hw/ppc/xive.h"
24 #include <sys/ioctl.h>
27 * Helpers for CPU hotplug
29 * TODO: make a common KVMEnabledCPU layer for XICS and XIVE
31 typedef struct KVMEnabledCPU {
32 unsigned long vcpu_id;
33 QLIST_ENTRY(KVMEnabledCPU) node;
36 static QLIST_HEAD(, KVMEnabledCPU)
37 kvm_enabled_cpus = QLIST_HEAD_INITIALIZER(&kvm_enabled_cpus);
39 static bool kvm_cpu_is_enabled(CPUState *cs)
41 KVMEnabledCPU *enabled_cpu;
42 unsigned long vcpu_id = kvm_arch_vcpu_id(cs);
44 QLIST_FOREACH(enabled_cpu, &kvm_enabled_cpus, node) {
45 if (enabled_cpu->vcpu_id == vcpu_id) {
52 static void kvm_cpu_enable(CPUState *cs)
54 KVMEnabledCPU *enabled_cpu;
55 unsigned long vcpu_id = kvm_arch_vcpu_id(cs);
57 enabled_cpu = g_malloc(sizeof(*enabled_cpu));
58 enabled_cpu->vcpu_id = vcpu_id;
59 QLIST_INSERT_HEAD(&kvm_enabled_cpus, enabled_cpu, node);
62 static void kvm_cpu_disable_all(void)
64 KVMEnabledCPU *enabled_cpu, *next;
66 QLIST_FOREACH_SAFE(enabled_cpu, &kvm_enabled_cpus, node, next) {
67 QLIST_REMOVE(enabled_cpu, node);
73 * XIVE Thread Interrupt Management context (KVM)
76 void kvmppc_xive_cpu_set_state(XiveTCTX *tctx, Error **errp)
78 SpaprXive *xive = SPAPR_MACHINE(qdev_get_machine())->xive;
82 /* The KVM XIVE device is not in use yet */
87 /* word0 and word1 of the OS ring. */
88 state[0] = *((uint64_t *) &tctx->regs[TM_QW1_OS]);
90 ret = kvm_set_one_reg(tctx->cs, KVM_REG_PPC_VP_STATE, state);
92 error_setg_errno(errp, errno,
93 "XIVE: could not restore KVM state of CPU %ld",
94 kvm_arch_vcpu_id(tctx->cs));
98 void kvmppc_xive_cpu_get_state(XiveTCTX *tctx, Error **errp)
100 SpaprXive *xive = SPAPR_MACHINE(qdev_get_machine())->xive;
101 uint64_t state[2] = { 0 };
104 /* The KVM XIVE device is not in use */
105 if (xive->fd == -1) {
109 ret = kvm_get_one_reg(tctx->cs, KVM_REG_PPC_VP_STATE, state);
111 error_setg_errno(errp, errno,
112 "XIVE: could not capture KVM state of CPU %ld",
113 kvm_arch_vcpu_id(tctx->cs));
117 /* word0 and word1 of the OS ring. */
118 *((uint64_t *) &tctx->regs[TM_QW1_OS]) = state[0];
126 static void kvmppc_xive_cpu_do_synchronize_state(CPUState *cpu,
129 XiveCpuGetState *s = arg.host_ptr;
131 kvmppc_xive_cpu_get_state(s->tctx, &s->err);
134 void kvmppc_xive_cpu_synchronize_state(XiveTCTX *tctx, Error **errp)
136 XiveCpuGetState s = {
142 * Kick the vCPU to make sure they are available for the KVM ioctl.
144 run_on_cpu(tctx->cs, kvmppc_xive_cpu_do_synchronize_state,
145 RUN_ON_CPU_HOST_PTR(&s));
148 error_propagate(errp, s.err);
153 void kvmppc_xive_cpu_connect(XiveTCTX *tctx, Error **errp)
155 SpaprXive *xive = SPAPR_MACHINE(qdev_get_machine())->xive;
156 unsigned long vcpu_id;
159 /* The KVM XIVE device is not in use */
160 if (xive->fd == -1) {
164 /* Check if CPU was hot unplugged and replugged. */
165 if (kvm_cpu_is_enabled(tctx->cs)) {
169 vcpu_id = kvm_arch_vcpu_id(tctx->cs);
171 ret = kvm_vcpu_enable_cap(tctx->cs, KVM_CAP_PPC_IRQ_XIVE, 0, xive->fd,
174 error_setg(errp, "XIVE: unable to connect CPU%ld to KVM device: %s",
175 vcpu_id, strerror(errno));
179 kvm_cpu_enable(tctx->cs);
183 * XIVE Interrupt Source (KVM)
186 void kvmppc_xive_set_source_config(SpaprXive *xive, uint32_t lisn, XiveEAS *eas,
196 Error *local_err = NULL;
198 assert(xive_eas_is_valid(eas));
200 end_idx = xive_get_field64(EAS_END_INDEX, eas->w);
201 end_blk = xive_get_field64(EAS_END_BLOCK, eas->w);
202 eisn = xive_get_field64(EAS_END_DATA, eas->w);
203 masked = xive_eas_is_masked(eas);
205 spapr_xive_end_to_target(end_blk, end_idx, &server, &priority);
207 kvm_src = priority << KVM_XIVE_SOURCE_PRIORITY_SHIFT &
208 KVM_XIVE_SOURCE_PRIORITY_MASK;
209 kvm_src |= server << KVM_XIVE_SOURCE_SERVER_SHIFT &
210 KVM_XIVE_SOURCE_SERVER_MASK;
211 kvm_src |= ((uint64_t) masked << KVM_XIVE_SOURCE_MASKED_SHIFT) &
212 KVM_XIVE_SOURCE_MASKED_MASK;
213 kvm_src |= ((uint64_t)eisn << KVM_XIVE_SOURCE_EISN_SHIFT) &
214 KVM_XIVE_SOURCE_EISN_MASK;
216 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_SOURCE_CONFIG, lisn,
217 &kvm_src, true, &local_err);
219 error_propagate(errp, local_err);
224 void kvmppc_xive_sync_source(SpaprXive *xive, uint32_t lisn, Error **errp)
226 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_SOURCE_SYNC, lisn,
231 * At reset, the interrupt sources are simply created and MASKED. We
232 * only need to inform the KVM XIVE device about their type: LSI or
235 int kvmppc_xive_source_reset_one(XiveSource *xsrc, int srcno, Error **errp)
237 SpaprXive *xive = SPAPR_XIVE(xsrc->xive);
240 /* The KVM XIVE device is not in use */
241 if (xive->fd == -1) {
245 if (xive_source_irq_is_lsi(xsrc, srcno)) {
246 state |= KVM_XIVE_LEVEL_SENSITIVE;
247 if (xsrc->status[srcno] & XIVE_STATUS_ASSERTED) {
248 state |= KVM_XIVE_LEVEL_ASSERTED;
252 return kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_SOURCE, srcno, &state,
256 static void kvmppc_xive_source_reset(XiveSource *xsrc, Error **errp)
258 SpaprXive *xive = SPAPR_XIVE(xsrc->xive);
261 for (i = 0; i < xsrc->nr_irqs; i++) {
262 Error *local_err = NULL;
264 if (!xive_eas_is_valid(&xive->eat[i])) {
268 kvmppc_xive_source_reset_one(xsrc, i, &local_err);
270 error_propagate(errp, local_err);
277 * This is used to perform the magic loads on the ESB pages, described
280 * Memory barriers should not be needed for loads (no store for now).
282 static uint64_t xive_esb_rw(XiveSource *xsrc, int srcno, uint32_t offset,
283 uint64_t data, bool write)
285 uint64_t *addr = xsrc->esb_mmap + xive_source_esb_mgmt(xsrc, srcno) +
289 *addr = cpu_to_be64(data);
292 /* Prevent the compiler from optimizing away the load */
293 volatile uint64_t value = be64_to_cpu(*addr);
298 static uint8_t xive_esb_read(XiveSource *xsrc, int srcno, uint32_t offset)
300 return xive_esb_rw(xsrc, srcno, offset, 0, 0) & 0x3;
303 static void xive_esb_trigger(XiveSource *xsrc, int srcno)
305 uint64_t *addr = xsrc->esb_mmap + xive_source_esb_page(xsrc, srcno);
310 uint64_t kvmppc_xive_esb_rw(XiveSource *xsrc, int srcno, uint32_t offset,
311 uint64_t data, bool write)
314 return xive_esb_rw(xsrc, srcno, offset, data, 1);
318 * Special Load EOI handling for LSI sources. Q bit is never set
319 * and the interrupt should be re-triggered if the level is still
322 if (xive_source_irq_is_lsi(xsrc, srcno) &&
323 offset == XIVE_ESB_LOAD_EOI) {
324 xive_esb_read(xsrc, srcno, XIVE_ESB_SET_PQ_00);
325 if (xsrc->status[srcno] & XIVE_STATUS_ASSERTED) {
326 xive_esb_trigger(xsrc, srcno);
330 return xive_esb_rw(xsrc, srcno, offset, 0, 0);
334 static void kvmppc_xive_source_get_state(XiveSource *xsrc)
336 SpaprXive *xive = SPAPR_XIVE(xsrc->xive);
339 for (i = 0; i < xsrc->nr_irqs; i++) {
342 if (!xive_eas_is_valid(&xive->eat[i])) {
346 /* Perform a load without side effect to retrieve the PQ bits */
347 pq = xive_esb_read(xsrc, i, XIVE_ESB_GET);
349 /* and save PQ locally */
350 xive_source_esb_set(xsrc, i, pq);
354 void kvmppc_xive_source_set_irq(void *opaque, int srcno, int val)
356 XiveSource *xsrc = opaque;
358 if (!xive_source_irq_is_lsi(xsrc, srcno)) {
364 xsrc->status[srcno] |= XIVE_STATUS_ASSERTED;
366 xsrc->status[srcno] &= ~XIVE_STATUS_ASSERTED;
370 xive_esb_trigger(xsrc, srcno);
374 * sPAPR XIVE interrupt controller (KVM)
376 void kvmppc_xive_get_queue_config(SpaprXive *xive, uint8_t end_blk,
377 uint32_t end_idx, XiveEND *end,
380 struct kvm_ppc_xive_eq kvm_eq = { 0 };
384 Error *local_err = NULL;
386 assert(xive_end_is_valid(end));
388 /* Encode the tuple (server, prio) as a KVM EQ index */
389 spapr_xive_end_to_target(end_blk, end_idx, &server, &priority);
391 kvm_eq_idx = priority << KVM_XIVE_EQ_PRIORITY_SHIFT &
392 KVM_XIVE_EQ_PRIORITY_MASK;
393 kvm_eq_idx |= server << KVM_XIVE_EQ_SERVER_SHIFT &
394 KVM_XIVE_EQ_SERVER_MASK;
396 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_EQ_CONFIG, kvm_eq_idx,
397 &kvm_eq, false, &local_err);
399 error_propagate(errp, local_err);
404 * The EQ index and toggle bit are updated by HW. These are the
405 * only fields from KVM we want to update QEMU with. The other END
406 * fields should already be in the QEMU END table.
408 end->w1 = xive_set_field32(END_W1_GENERATION, 0ul, kvm_eq.qtoggle) |
409 xive_set_field32(END_W1_PAGE_OFF, 0ul, kvm_eq.qindex);
412 void kvmppc_xive_set_queue_config(SpaprXive *xive, uint8_t end_blk,
413 uint32_t end_idx, XiveEND *end,
416 struct kvm_ppc_xive_eq kvm_eq = { 0 };
420 Error *local_err = NULL;
423 * Build the KVM state from the local END structure.
427 if (xive_get_field32(END_W0_UCOND_NOTIFY, end->w0)) {
428 kvm_eq.flags |= KVM_XIVE_EQ_ALWAYS_NOTIFY;
432 * If the hcall is disabling the EQ, set the size and page address
433 * to zero. When migrating, only valid ENDs are taken into
436 if (xive_end_is_valid(end)) {
437 kvm_eq.qshift = xive_get_field32(END_W0_QSIZE, end->w0) + 12;
438 kvm_eq.qaddr = xive_end_qaddr(end);
440 * The EQ toggle bit and index should only be relevant when
441 * restoring the EQ state
443 kvm_eq.qtoggle = xive_get_field32(END_W1_GENERATION, end->w1);
444 kvm_eq.qindex = xive_get_field32(END_W1_PAGE_OFF, end->w1);
450 /* Encode the tuple (server, prio) as a KVM EQ index */
451 spapr_xive_end_to_target(end_blk, end_idx, &server, &priority);
453 kvm_eq_idx = priority << KVM_XIVE_EQ_PRIORITY_SHIFT &
454 KVM_XIVE_EQ_PRIORITY_MASK;
455 kvm_eq_idx |= server << KVM_XIVE_EQ_SERVER_SHIFT &
456 KVM_XIVE_EQ_SERVER_MASK;
458 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_EQ_CONFIG, kvm_eq_idx,
459 &kvm_eq, true, &local_err);
461 error_propagate(errp, local_err);
466 void kvmppc_xive_reset(SpaprXive *xive, Error **errp)
468 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_CTRL, KVM_DEV_XIVE_RESET,
472 static void kvmppc_xive_get_queues(SpaprXive *xive, Error **errp)
474 Error *local_err = NULL;
477 for (i = 0; i < xive->nr_ends; i++) {
478 if (!xive_end_is_valid(&xive->endt[i])) {
482 kvmppc_xive_get_queue_config(xive, SPAPR_XIVE_BLOCK_ID, i,
483 &xive->endt[i], &local_err);
485 error_propagate(errp, local_err);
492 * The primary goal of the XIVE VM change handler is to mark the EQ
493 * pages dirty when all XIVE event notifications have stopped.
495 * Whenever the VM is stopped, the VM change handler sets the source
496 * PQs to PENDING to stop the flow of events and to possibly catch a
497 * triggered interrupt occuring while the VM is stopped. The previous
498 * state is saved in anticipation of a migration. The XIVE controller
499 * is then synced through KVM to flush any in-flight event
500 * notification and stabilize the EQs.
502 * At this stage, we can mark the EQ page dirty and let a migration
503 * sequence transfer the EQ pages to the destination, which is done
504 * just after the stop state.
506 * The previous configuration of the sources is restored when the VM
507 * runs again. If an interrupt was queued while the VM was stopped,
508 * simply generate a trigger.
510 static void kvmppc_xive_change_state_handler(void *opaque, int running,
513 SpaprXive *xive = opaque;
514 XiveSource *xsrc = &xive->source;
515 Error *local_err = NULL;
519 * Restore the sources to their initial state. This is called when
520 * the VM resumes after a stop or a migration.
523 for (i = 0; i < xsrc->nr_irqs; i++) {
527 if (!xive_eas_is_valid(&xive->eat[i])) {
531 pq = xive_source_esb_get(xsrc, i);
532 old_pq = xive_esb_read(xsrc, i, XIVE_ESB_SET_PQ_00 + (pq << 8));
535 * An interrupt was queued while the VM was stopped,
536 * generate a trigger.
538 if (pq == XIVE_ESB_RESET && old_pq == XIVE_ESB_QUEUED) {
539 xive_esb_trigger(xsrc, i);
547 * Mask the sources, to stop the flow of event notifications, and
548 * save the PQs locally in the XiveSource object. The XiveSource
549 * state will be collected later on by its vmstate handler if a
550 * migration is in progress.
552 for (i = 0; i < xsrc->nr_irqs; i++) {
555 if (!xive_eas_is_valid(&xive->eat[i])) {
559 pq = xive_esb_read(xsrc, i, XIVE_ESB_GET);
562 * PQ is set to PENDING to possibly catch a triggered
563 * interrupt occuring while the VM is stopped (hotplug event
566 if (pq != XIVE_ESB_OFF) {
567 pq = xive_esb_read(xsrc, i, XIVE_ESB_SET_PQ_10);
569 xive_source_esb_set(xsrc, i, pq);
573 * Sync the XIVE controller in KVM, to flush in-flight event
574 * notification that should be enqueued in the EQs and mark the
575 * XIVE EQ pages dirty to collect all updates.
577 kvm_device_access(xive->fd, KVM_DEV_XIVE_GRP_CTRL,
578 KVM_DEV_XIVE_EQ_SYNC, NULL, true, &local_err);
580 error_report_err(local_err);
585 void kvmppc_xive_synchronize_state(SpaprXive *xive, Error **errp)
587 /* The KVM XIVE device is not in use */
588 if (xive->fd == -1) {
593 * When the VM is stopped, the sources are masked and the previous
594 * state is saved in anticipation of a migration. We should not
595 * synchronize the source state in that case else we will override
598 if (runstate_is_running()) {
599 kvmppc_xive_source_get_state(&xive->source);
602 /* EAT: there is no extra state to query from KVM */
605 kvmppc_xive_get_queues(xive, errp);
609 * The SpaprXive 'pre_save' method is called by the vmstate handler of
610 * the SpaprXive model, after the XIVE controller is synced in the VM
613 int kvmppc_xive_pre_save(SpaprXive *xive)
615 Error *local_err = NULL;
617 /* The KVM XIVE device is not in use */
618 if (xive->fd == -1) {
622 /* EAT: there is no extra state to query from KVM */
625 kvmppc_xive_get_queues(xive, &local_err);
627 error_report_err(local_err);
635 * The SpaprXive 'post_load' method is not called by a vmstate
636 * handler. It is called at the sPAPR machine level at the end of the
637 * migration sequence by the sPAPR IRQ backend 'post_load' method,
638 * when all XIVE states have been transferred and loaded.
640 int kvmppc_xive_post_load(SpaprXive *xive, int version_id)
642 Error *local_err = NULL;
646 /* The KVM XIVE device should be in use */
647 assert(xive->fd != -1);
649 /* Restore the ENDT first. The targetting depends on it. */
650 for (i = 0; i < xive->nr_ends; i++) {
651 if (!xive_end_is_valid(&xive->endt[i])) {
655 kvmppc_xive_set_queue_config(xive, SPAPR_XIVE_BLOCK_ID, i,
656 &xive->endt[i], &local_err);
658 error_report_err(local_err);
663 /* Restore the EAT */
664 for (i = 0; i < xive->nr_irqs; i++) {
665 if (!xive_eas_is_valid(&xive->eat[i])) {
670 * We can only restore the source config if the source has been
671 * previously set in KVM. Since we don't do that for all interrupts
672 * at reset time anymore, let's do it now.
674 kvmppc_xive_source_reset_one(&xive->source, i, &local_err);
676 error_report_err(local_err);
680 kvmppc_xive_set_source_config(xive, i, &xive->eat[i], &local_err);
682 error_report_err(local_err);
688 * Restore the thread interrupt contexts of initial CPUs.
690 * The context of hotplugged CPUs is restored later, by the
691 * 'post_load' handler of the XiveTCTX model because they are not
692 * available at the time the SpaprXive 'post_load' method is
693 * called. We can not restore the context of all CPUs in the
694 * 'post_load' handler of XiveTCTX because the machine is not
695 * necessarily connected to the KVM device at that time.
698 PowerPCCPU *cpu = POWERPC_CPU(cs);
700 kvmppc_xive_cpu_set_state(spapr_cpu_state(cpu)->tctx, &local_err);
702 error_report_err(local_err);
707 /* The source states will be restored when the machine starts running */
711 static void *kvmppc_xive_mmap(SpaprXive *xive, int pgoff, size_t len,
715 uint32_t page_shift = 16; /* TODO: fix page_shift */
717 addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED, xive->fd,
718 pgoff << page_shift);
719 if (addr == MAP_FAILED) {
720 error_setg_errno(errp, errno, "XIVE: unable to set memory mapping");
728 * All the XIVE memory regions are now backed by mappings from the KVM
731 int kvmppc_xive_connect(SpaprInterruptController *intc, uint32_t nr_servers,
734 SpaprXive *xive = SPAPR_XIVE(intc);
735 XiveSource *xsrc = &xive->source;
736 Error *local_err = NULL;
737 size_t esb_len = (1ull << xsrc->esb_shift) * xsrc->nr_irqs;
738 size_t tima_len = 4ull << TM_SHIFT;
742 * The KVM XIVE device already in use. This is the case when
743 * rebooting under the XIVE-only interrupt mode.
745 if (xive->fd != -1) {
749 if (!kvmppc_has_cap_xive()) {
750 error_setg(errp, "IRQ_XIVE capability must be present for KVM");
754 /* First, create the KVM XIVE device */
755 xive->fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_XIVE, false);
757 error_setg_errno(errp, -xive->fd, "XIVE: error creating KVM device");
762 * 1. Source ESB pages - KVM mapping
764 xsrc->esb_mmap = kvmppc_xive_mmap(xive, KVM_XIVE_ESB_PAGE_OFFSET, esb_len,
770 memory_region_init_ram_device_ptr(&xsrc->esb_mmio_kvm, OBJECT(xsrc),
771 "xive.esb", esb_len, xsrc->esb_mmap);
772 memory_region_add_subregion_overlap(&xsrc->esb_mmio, 0,
773 &xsrc->esb_mmio_kvm, 1);
776 * 2. END ESB pages (No KVM support yet)
780 * 3. TIMA pages - KVM mapping
782 xive->tm_mmap = kvmppc_xive_mmap(xive, KVM_XIVE_TIMA_PAGE_OFFSET, tima_len,
787 memory_region_init_ram_device_ptr(&xive->tm_mmio_kvm, OBJECT(xive),
788 "xive.tima", tima_len, xive->tm_mmap);
789 memory_region_add_subregion_overlap(&xive->tm_mmio, 0,
790 &xive->tm_mmio_kvm, 1);
792 xive->change = qemu_add_vm_change_state_handler(
793 kvmppc_xive_change_state_handler, xive);
795 /* Connect the presenters to the initial VCPUs of the machine */
797 PowerPCCPU *cpu = POWERPC_CPU(cs);
799 kvmppc_xive_cpu_connect(spapr_cpu_state(cpu)->tctx, &local_err);
805 /* Update the KVM sources */
806 kvmppc_xive_source_reset(xsrc, &local_err);
811 kvm_kernel_irqchip = true;
812 kvm_msi_via_irqfd_allowed = true;
813 kvm_gsi_direct_mapping = true;
817 error_propagate(errp, local_err);
818 kvmppc_xive_disconnect(intc);
822 void kvmppc_xive_disconnect(SpaprInterruptController *intc)
824 SpaprXive *xive = SPAPR_XIVE(intc);
828 /* The KVM XIVE device is not in use */
829 if (!xive || xive->fd == -1) {
833 /* Clear the KVM mapping */
834 xsrc = &xive->source;
835 esb_len = (1ull << xsrc->esb_shift) * xsrc->nr_irqs;
837 if (xsrc->esb_mmap) {
838 memory_region_del_subregion(&xsrc->esb_mmio, &xsrc->esb_mmio_kvm);
839 object_unparent(OBJECT(&xsrc->esb_mmio_kvm));
840 munmap(xsrc->esb_mmap, esb_len);
841 xsrc->esb_mmap = NULL;
845 memory_region_del_subregion(&xive->tm_mmio, &xive->tm_mmio_kvm);
846 object_unparent(OBJECT(&xive->tm_mmio_kvm));
847 munmap(xive->tm_mmap, 4ull << TM_SHIFT);
848 xive->tm_mmap = NULL;
852 * When the KVM device fd is closed, the KVM device is destroyed
853 * and removed from the list of devices of the VM. The VCPU
854 * presenters are also detached from the device.
856 if (xive->fd != -1) {
861 kvm_kernel_irqchip = false;
862 kvm_msi_via_irqfd_allowed = false;
863 kvm_gsi_direct_mapping = false;
865 /* Clear the local list of presenter (hotplug) */
866 kvm_cpu_disable_all();
868 /* VM Change state handler is not needed anymore */
870 qemu_del_vm_change_state_handler(xive->change);