4 * Copyright (c) 2004-2005 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>
23 #include "qemu-timer.h"
24 #include "host-utils.h"
29 /* APIC Local Vector Table */
30 #define APIC_LVT_TIMER 0
31 #define APIC_LVT_THERMAL 1
32 #define APIC_LVT_PERFORM 2
33 #define APIC_LVT_LINT0 3
34 #define APIC_LVT_LINT1 4
35 #define APIC_LVT_ERROR 5
38 /* APIC delivery modes */
39 #define APIC_DM_FIXED 0
40 #define APIC_DM_LOWPRI 1
43 #define APIC_DM_INIT 5
44 #define APIC_DM_SIPI 6
45 #define APIC_DM_EXTINT 7
47 /* APIC destination mode */
48 #define APIC_DESTMODE_FLAT 0xf
49 #define APIC_DESTMODE_CLUSTER 1
51 #define APIC_TRIGGER_EDGE 0
52 #define APIC_TRIGGER_LEVEL 1
54 #define APIC_LVT_TIMER_PERIODIC (1<<17)
55 #define APIC_LVT_MASKED (1<<16)
56 #define APIC_LVT_LEVEL_TRIGGER (1<<15)
57 #define APIC_LVT_REMOTE_IRR (1<<14)
58 #define APIC_INPUT_POLARITY (1<<13)
59 #define APIC_SEND_PENDING (1<<12)
61 #define ESR_ILLEGAL_ADDRESS (1 << 7)
63 #define APIC_SV_ENABLE (1 << 8)
66 #define MAX_APIC_WORDS 8
68 /* Intel APIC constants: from include/asm/msidef.h */
69 #define MSI_DATA_VECTOR_SHIFT 0
70 #define MSI_DATA_VECTOR_MASK 0x000000ff
71 #define MSI_DATA_DELIVERY_MODE_SHIFT 8
72 #define MSI_DATA_TRIGGER_SHIFT 15
73 #define MSI_DATA_LEVEL_SHIFT 14
74 #define MSI_ADDR_DEST_MODE_SHIFT 2
75 #define MSI_ADDR_DEST_ID_SHIFT 12
76 #define MSI_ADDR_DEST_ID_MASK 0x00ffff0
78 #define MSI_ADDR_BASE 0xfee00000
79 #define MSI_ADDR_SIZE 0x100000
81 typedef struct APICState {
87 uint32_t spurious_vec;
90 uint32_t isr[8]; /* in service register */
91 uint32_t tmr[8]; /* trigger mode register */
92 uint32_t irr[8]; /* interrupt request register */
93 uint32_t lvt[APIC_LVT_NB];
94 uint32_t esr; /* error register */
99 uint32_t initial_count;
100 int64_t initial_count_load_time, next_time;
107 static int apic_io_memory;
108 static APICState *local_apics[MAX_APICS + 1];
109 static int last_apic_idx = 0;
110 static int apic_irq_delivered;
113 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode);
114 static void apic_update_irq(APICState *s);
115 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
116 uint8_t dest, uint8_t dest_mode);
118 /* Find first bit starting from msb */
119 static int fls_bit(uint32_t value)
121 return 31 - clz32(value);
124 /* Find first bit starting from lsb */
125 static int ffs_bit(uint32_t value)
130 static inline void set_bit(uint32_t *tab, int index)
134 mask = 1 << (index & 0x1f);
138 static inline void reset_bit(uint32_t *tab, int index)
142 mask = 1 << (index & 0x1f);
146 static inline int get_bit(uint32_t *tab, int index)
150 mask = 1 << (index & 0x1f);
151 return !!(tab[i] & mask);
154 static void apic_local_deliver(CPUState *env, int vector)
156 APICState *s = env->apic_state;
157 uint32_t lvt = s->lvt[vector];
160 if (lvt & APIC_LVT_MASKED)
163 switch ((lvt >> 8) & 7) {
165 cpu_interrupt(env, CPU_INTERRUPT_SMI);
169 cpu_interrupt(env, CPU_INTERRUPT_NMI);
173 cpu_interrupt(env, CPU_INTERRUPT_HARD);
177 trigger_mode = APIC_TRIGGER_EDGE;
178 if ((vector == APIC_LVT_LINT0 || vector == APIC_LVT_LINT1) &&
179 (lvt & APIC_LVT_LEVEL_TRIGGER))
180 trigger_mode = APIC_TRIGGER_LEVEL;
181 apic_set_irq(s, lvt & 0xff, trigger_mode);
185 void apic_deliver_pic_intr(CPUState *env, int level)
188 apic_local_deliver(env, APIC_LVT_LINT0);
190 APICState *s = env->apic_state;
191 uint32_t lvt = s->lvt[APIC_LVT_LINT0];
193 switch ((lvt >> 8) & 7) {
195 if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
197 reset_bit(s->irr, lvt & 0xff);
200 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
206 #define foreach_apic(apic, deliver_bitmask, code) \
208 int __i, __j, __mask;\
209 for(__i = 0; __i < MAX_APIC_WORDS; __i++) {\
210 __mask = deliver_bitmask[__i];\
212 for(__j = 0; __j < 32; __j++) {\
213 if (__mask & (1 << __j)) {\
214 apic = local_apics[__i * 32 + __j];\
224 static void apic_bus_deliver(const uint32_t *deliver_bitmask,
225 uint8_t delivery_mode,
226 uint8_t vector_num, uint8_t polarity,
227 uint8_t trigger_mode)
229 APICState *apic_iter;
231 switch (delivery_mode) {
233 /* XXX: search for focus processor, arbitration */
237 for(i = 0; i < MAX_APIC_WORDS; i++) {
238 if (deliver_bitmask[i]) {
239 d = i * 32 + ffs_bit(deliver_bitmask[i]);
244 apic_iter = local_apics[d];
246 apic_set_irq(apic_iter, vector_num, trigger_mode);
256 foreach_apic(apic_iter, deliver_bitmask,
257 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_SMI) );
261 foreach_apic(apic_iter, deliver_bitmask,
262 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_NMI) );
266 /* normal INIT IPI sent to processors */
267 foreach_apic(apic_iter, deliver_bitmask,
268 cpu_interrupt(apic_iter->cpu_env, CPU_INTERRUPT_INIT) );
272 /* handled in I/O APIC code */
279 foreach_apic(apic_iter, deliver_bitmask,
280 apic_set_irq(apic_iter, vector_num, trigger_mode) );
283 void apic_deliver_irq(uint8_t dest, uint8_t dest_mode,
284 uint8_t delivery_mode, uint8_t vector_num,
285 uint8_t polarity, uint8_t trigger_mode)
287 uint32_t deliver_bitmask[MAX_APIC_WORDS];
289 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
290 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, polarity,
294 void cpu_set_apic_base(CPUState *env, uint64_t val)
296 APICState *s = env->apic_state;
298 printf("cpu_set_apic_base: %016" PRIx64 "\n", val);
302 s->apicbase = (val & 0xfffff000) |
303 (s->apicbase & (MSR_IA32_APICBASE_BSP | MSR_IA32_APICBASE_ENABLE));
304 /* if disabled, cannot be enabled again */
305 if (!(val & MSR_IA32_APICBASE_ENABLE)) {
306 s->apicbase &= ~MSR_IA32_APICBASE_ENABLE;
307 env->cpuid_features &= ~CPUID_APIC;
308 s->spurious_vec &= ~APIC_SV_ENABLE;
312 uint64_t cpu_get_apic_base(CPUState *env)
314 APICState *s = env->apic_state;
316 printf("cpu_get_apic_base: %016" PRIx64 "\n",
317 s ? (uint64_t)s->apicbase: 0);
319 return s ? s->apicbase : 0;
322 void cpu_set_apic_tpr(CPUX86State *env, uint8_t val)
324 APICState *s = env->apic_state;
327 s->tpr = (val & 0x0f) << 4;
331 uint8_t cpu_get_apic_tpr(CPUX86State *env)
333 APICState *s = env->apic_state;
334 return s ? s->tpr >> 4 : 0;
337 /* return -1 if no bit is set */
338 static int get_highest_priority_int(uint32_t *tab)
341 for(i = 7; i >= 0; i--) {
343 return i * 32 + fls_bit(tab[i]);
349 static int apic_get_ppr(APICState *s)
354 isrv = get_highest_priority_int(s->isr);
365 static int apic_get_arb_pri(APICState *s)
367 /* XXX: arbitration */
371 /* signal the CPU if an irq is pending */
372 static void apic_update_irq(APICState *s)
375 if (!(s->spurious_vec & APIC_SV_ENABLE))
377 irrv = get_highest_priority_int(s->irr);
380 ppr = apic_get_ppr(s);
381 if (ppr && (irrv & 0xf0) <= (ppr & 0xf0))
383 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
386 void apic_reset_irq_delivered(void)
388 apic_irq_delivered = 0;
391 int apic_get_irq_delivered(void)
393 return apic_irq_delivered;
396 static void apic_set_irq(APICState *s, int vector_num, int trigger_mode)
398 apic_irq_delivered += !get_bit(s->irr, vector_num);
400 set_bit(s->irr, vector_num);
402 set_bit(s->tmr, vector_num);
404 reset_bit(s->tmr, vector_num);
408 static void apic_eoi(APICState *s)
411 isrv = get_highest_priority_int(s->isr);
414 reset_bit(s->isr, isrv);
415 /* XXX: send the EOI packet to the APIC bus to allow the I/O APIC to
416 set the remote IRR bit for level triggered interrupts. */
420 static int apic_find_dest(uint8_t dest)
422 APICState *apic = local_apics[dest];
425 if (apic && apic->id == dest)
426 return dest; /* shortcut in case apic->id == apic->idx */
428 for (i = 0; i < MAX_APICS; i++) {
429 apic = local_apics[i];
430 if (apic && apic->id == dest)
437 static void apic_get_delivery_bitmask(uint32_t *deliver_bitmask,
438 uint8_t dest, uint8_t dest_mode)
440 APICState *apic_iter;
443 if (dest_mode == 0) {
445 memset(deliver_bitmask, 0xff, MAX_APIC_WORDS * sizeof(uint32_t));
447 int idx = apic_find_dest(dest);
448 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
450 set_bit(deliver_bitmask, idx);
453 /* XXX: cluster mode */
454 memset(deliver_bitmask, 0x00, MAX_APIC_WORDS * sizeof(uint32_t));
455 for(i = 0; i < MAX_APICS; i++) {
456 apic_iter = local_apics[i];
458 if (apic_iter->dest_mode == 0xf) {
459 if (dest & apic_iter->log_dest)
460 set_bit(deliver_bitmask, i);
461 } else if (apic_iter->dest_mode == 0x0) {
462 if ((dest & 0xf0) == (apic_iter->log_dest & 0xf0) &&
463 (dest & apic_iter->log_dest & 0x0f)) {
464 set_bit(deliver_bitmask, i);
473 void apic_init_reset(CPUState *env)
475 APICState *s = env->apic_state;
482 s->spurious_vec = 0xff;
485 memset(s->isr, 0, sizeof(s->isr));
486 memset(s->tmr, 0, sizeof(s->tmr));
487 memset(s->irr, 0, sizeof(s->irr));
488 for(i = 0; i < APIC_LVT_NB; i++)
489 s->lvt[i] = 1 << 16; /* mask LVT */
491 memset(s->icr, 0, sizeof(s->icr));
494 s->initial_count = 0;
495 s->initial_count_load_time = 0;
497 s->wait_for_sipi = 1;
499 env->halted = !(s->apicbase & MSR_IA32_APICBASE_BSP);
502 static void apic_startup(APICState *s, int vector_num)
504 s->sipi_vector = vector_num;
505 cpu_interrupt(s->cpu_env, CPU_INTERRUPT_SIPI);
508 void apic_sipi(CPUState *env)
510 APICState *s = env->apic_state;
512 cpu_reset_interrupt(env, CPU_INTERRUPT_SIPI);
514 if (!s->wait_for_sipi)
518 cpu_x86_load_seg_cache(env, R_CS, s->sipi_vector << 8, s->sipi_vector << 12,
521 s->wait_for_sipi = 0;
524 static void apic_deliver(APICState *s, uint8_t dest, uint8_t dest_mode,
525 uint8_t delivery_mode, uint8_t vector_num,
526 uint8_t polarity, uint8_t trigger_mode)
528 uint32_t deliver_bitmask[MAX_APIC_WORDS];
529 int dest_shorthand = (s->icr[0] >> 18) & 3;
530 APICState *apic_iter;
532 switch (dest_shorthand) {
534 apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
537 memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask));
538 set_bit(deliver_bitmask, s->idx);
541 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
544 memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask));
545 reset_bit(deliver_bitmask, s->idx);
549 switch (delivery_mode) {
552 int trig_mode = (s->icr[0] >> 15) & 1;
553 int level = (s->icr[0] >> 14) & 1;
554 if (level == 0 && trig_mode == 1) {
555 foreach_apic(apic_iter, deliver_bitmask,
556 apic_iter->arb_id = apic_iter->id );
563 foreach_apic(apic_iter, deliver_bitmask,
564 apic_startup(apic_iter, vector_num) );
568 apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, polarity,
572 int apic_get_interrupt(CPUState *env)
574 APICState *s = env->apic_state;
577 /* if the APIC is installed or enabled, we let the 8259 handle the
581 if (!(s->spurious_vec & APIC_SV_ENABLE))
584 /* XXX: spurious IRQ handling */
585 intno = get_highest_priority_int(s->irr);
588 if (s->tpr && intno <= s->tpr)
589 return s->spurious_vec & 0xff;
590 reset_bit(s->irr, intno);
591 set_bit(s->isr, intno);
596 int apic_accept_pic_intr(CPUState *env)
598 APICState *s = env->apic_state;
604 lvt0 = s->lvt[APIC_LVT_LINT0];
606 if ((s->apicbase & MSR_IA32_APICBASE_ENABLE) == 0 ||
607 (lvt0 & APIC_LVT_MASKED) == 0)
613 static uint32_t apic_get_current_count(APICState *s)
617 d = (qemu_get_clock(vm_clock) - s->initial_count_load_time) >>
619 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
621 val = s->initial_count - (d % ((uint64_t)s->initial_count + 1));
623 if (d >= s->initial_count)
626 val = s->initial_count - d;
631 static void apic_timer_update(APICState *s, int64_t current_time)
633 int64_t next_time, d;
635 if (!(s->lvt[APIC_LVT_TIMER] & APIC_LVT_MASKED)) {
636 d = (current_time - s->initial_count_load_time) >>
638 if (s->lvt[APIC_LVT_TIMER] & APIC_LVT_TIMER_PERIODIC) {
639 if (!s->initial_count)
641 d = ((d / ((uint64_t)s->initial_count + 1)) + 1) * ((uint64_t)s->initial_count + 1);
643 if (d >= s->initial_count)
645 d = (uint64_t)s->initial_count + 1;
647 next_time = s->initial_count_load_time + (d << s->count_shift);
648 qemu_mod_timer(s->timer, next_time);
649 s->next_time = next_time;
652 qemu_del_timer(s->timer);
656 static void apic_timer(void *opaque)
658 APICState *s = opaque;
660 apic_local_deliver(s->cpu_env, APIC_LVT_TIMER);
661 apic_timer_update(s, s->next_time);
664 static uint32_t apic_mem_readb(void *opaque, target_phys_addr_t addr)
669 static uint32_t apic_mem_readw(void *opaque, target_phys_addr_t addr)
674 static void apic_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
678 static void apic_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
682 static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr)
689 env = cpu_single_env;
694 index = (addr >> 4) & 0xff;
699 case 0x03: /* version */
700 val = 0x11 | ((APIC_LVT_NB - 1) << 16); /* version 0x11 */
706 val = apic_get_arb_pri(s);
710 val = apic_get_ppr(s);
716 val = s->log_dest << 24;
719 val = s->dest_mode << 28;
722 val = s->spurious_vec;
725 val = s->isr[index & 7];
728 val = s->tmr[index & 7];
731 val = s->irr[index & 7];
738 val = s->icr[index & 1];
741 val = s->lvt[index - 0x32];
744 val = s->initial_count;
747 val = apic_get_current_count(s);
750 val = s->divide_conf;
753 s->esr |= ESR_ILLEGAL_ADDRESS;
758 printf("APIC read: %08x = %08x\n", (uint32_t)addr, val);
763 static void apic_send_msi(target_phys_addr_t addr, uint32 data)
765 uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
766 uint8_t vector = (data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
767 uint8_t dest_mode = (addr >> MSI_ADDR_DEST_MODE_SHIFT) & 0x1;
768 uint8_t trigger_mode = (data >> MSI_DATA_TRIGGER_SHIFT) & 0x1;
769 uint8_t delivery = (data >> MSI_DATA_DELIVERY_MODE_SHIFT) & 0x7;
770 /* XXX: Ignore redirection hint. */
771 apic_deliver_irq(dest, dest_mode, delivery, vector, 0, trigger_mode);
774 static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
778 int index = (addr >> 4) & 0xff;
779 if (addr > 0xfff || !index) {
780 /* MSI and MMIO APIC are at the same memory location,
781 * but actually not on the global bus: MSI is on PCI bus
782 * APIC is connected directly to the CPU.
783 * Mapping them on the global bus happens to work because
784 * MSI registers are reserved in APIC MMIO and vice versa. */
785 apic_send_msi(addr, val);
789 env = cpu_single_env;
795 printf("APIC write: %08x = %08x\n", (uint32_t)addr, val);
815 s->log_dest = val >> 24;
818 s->dest_mode = val >> 28;
821 s->spurious_vec = val & 0x1ff;
831 apic_deliver(s, (s->icr[1] >> 24) & 0xff, (s->icr[0] >> 11) & 1,
832 (s->icr[0] >> 8) & 7, (s->icr[0] & 0xff),
833 (s->icr[0] >> 14) & 1, (s->icr[0] >> 15) & 1);
840 int n = index - 0x32;
842 if (n == APIC_LVT_TIMER)
843 apic_timer_update(s, qemu_get_clock(vm_clock));
847 s->initial_count = val;
848 s->initial_count_load_time = qemu_get_clock(vm_clock);
849 apic_timer_update(s, s->initial_count_load_time);
856 s->divide_conf = val & 0xb;
857 v = (s->divide_conf & 3) | ((s->divide_conf >> 1) & 4);
858 s->count_shift = (v + 1) & 7;
862 s->esr |= ESR_ILLEGAL_ADDRESS;
867 static void apic_save(QEMUFile *f, void *opaque)
869 APICState *s = opaque;
872 qemu_put_be32s(f, &s->apicbase);
873 qemu_put_8s(f, &s->id);
874 qemu_put_8s(f, &s->arb_id);
875 qemu_put_8s(f, &s->tpr);
876 qemu_put_be32s(f, &s->spurious_vec);
877 qemu_put_8s(f, &s->log_dest);
878 qemu_put_8s(f, &s->dest_mode);
879 for (i = 0; i < 8; i++) {
880 qemu_put_be32s(f, &s->isr[i]);
881 qemu_put_be32s(f, &s->tmr[i]);
882 qemu_put_be32s(f, &s->irr[i]);
884 for (i = 0; i < APIC_LVT_NB; i++) {
885 qemu_put_be32s(f, &s->lvt[i]);
887 qemu_put_be32s(f, &s->esr);
888 qemu_put_be32s(f, &s->icr[0]);
889 qemu_put_be32s(f, &s->icr[1]);
890 qemu_put_be32s(f, &s->divide_conf);
891 qemu_put_be32(f, s->count_shift);
892 qemu_put_be32s(f, &s->initial_count);
893 qemu_put_be64(f, s->initial_count_load_time);
894 qemu_put_be64(f, s->next_time);
896 qemu_put_timer(f, s->timer);
899 static int apic_load(QEMUFile *f, void *opaque, int version_id)
901 APICState *s = opaque;
907 /* XXX: what if the base changes? (registered memory regions) */
908 qemu_get_be32s(f, &s->apicbase);
909 qemu_get_8s(f, &s->id);
910 qemu_get_8s(f, &s->arb_id);
911 qemu_get_8s(f, &s->tpr);
912 qemu_get_be32s(f, &s->spurious_vec);
913 qemu_get_8s(f, &s->log_dest);
914 qemu_get_8s(f, &s->dest_mode);
915 for (i = 0; i < 8; i++) {
916 qemu_get_be32s(f, &s->isr[i]);
917 qemu_get_be32s(f, &s->tmr[i]);
918 qemu_get_be32s(f, &s->irr[i]);
920 for (i = 0; i < APIC_LVT_NB; i++) {
921 qemu_get_be32s(f, &s->lvt[i]);
923 qemu_get_be32s(f, &s->esr);
924 qemu_get_be32s(f, &s->icr[0]);
925 qemu_get_be32s(f, &s->icr[1]);
926 qemu_get_be32s(f, &s->divide_conf);
927 s->count_shift=qemu_get_be32(f);
928 qemu_get_be32s(f, &s->initial_count);
929 s->initial_count_load_time=qemu_get_be64(f);
930 s->next_time=qemu_get_be64(f);
933 qemu_get_timer(f, s->timer);
937 static void apic_reset(void *opaque)
939 APICState *s = opaque;
940 int bsp = cpu_is_bsp(s->cpu_env);
942 s->apicbase = 0xfee00000 |
943 (bsp ? MSR_IA32_APICBASE_BSP : 0) | MSR_IA32_APICBASE_ENABLE;
945 cpu_reset(s->cpu_env);
946 apic_init_reset(s->cpu_env);
950 * LINT0 delivery mode on CPU #0 is set to ExtInt at initialization
951 * time typically by BIOS, so PIC interrupt can be delivered to the
952 * processor when local APIC is enabled.
954 s->lvt[APIC_LVT_LINT0] = 0x700;
957 cpu_synchronize_state(s->cpu_env, 1);
960 static CPUReadMemoryFunc * const apic_mem_read[3] = {
966 static CPUWriteMemoryFunc * const apic_mem_write[3] = {
972 int apic_init(CPUState *env)
976 if (last_apic_idx >= MAX_APICS)
978 s = qemu_mallocz(sizeof(APICState));
980 s->idx = last_apic_idx++;
981 s->id = env->cpuid_apic_id;
987 /* XXX: mapping more APICs at the same memory location */
988 if (apic_io_memory == 0) {
989 /* NOTE: the APIC is directly connected to the CPU - it is not
990 on the global memory bus. */
991 apic_io_memory = cpu_register_io_memory(apic_mem_read,
992 apic_mem_write, NULL);
993 /* XXX: what if the base changes? */
994 cpu_register_physical_memory(MSI_ADDR_BASE, MSI_ADDR_SIZE,
997 s->timer = qemu_new_timer(vm_clock, apic_timer, s);
999 register_savevm("apic", s->idx, 2, apic_save, apic_load, s);
1000 qemu_register_reset(apic_reset, s);
1002 local_apics[s->idx] = s;