2 * kvm_ia64.c: Basic KVM support On Itanium series processors
5 * Copyright (C) 2007, Intel Corporation.
6 * Xiantao Zhang (xiantao.zhang@intel.com)
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
19 * Place - Suite 330, Boston, MA 02111-1307 USA.
23 #include <linux/module.h>
24 #include <linux/errno.h>
25 #include <linux/percpu.h>
27 #include <linux/slab.h>
28 #include <linux/smp.h>
29 #include <linux/kvm_host.h>
30 #include <linux/kvm.h>
31 #include <linux/bitops.h>
32 #include <linux/hrtimer.h>
33 #include <linux/uaccess.h>
34 #include <linux/iommu.h>
35 #include <linux/intel-iommu.h>
36 #include <linux/pci.h>
38 #include <asm/pgtable.h>
39 #include <asm/gcc_intrin.h>
41 #include <asm/cacheflush.h>
42 #include <asm/div64.h>
45 #include <asm/sn/addrs.h>
46 #include <asm/sn/clksupport.h>
47 #include <asm/sn/shub_mmr.h>
56 static unsigned long kvm_vmm_base;
57 static unsigned long kvm_vsa_base;
58 static unsigned long kvm_vm_buffer;
59 static unsigned long kvm_vm_buffer_size;
60 unsigned long kvm_vmm_gp;
62 static long vp_env_info;
64 static struct kvm_vmm_info *kvm_vmm_info;
66 static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
68 struct kvm_stats_debugfs_item debugfs_entries[] = {
72 static unsigned long kvm_get_itc(struct kvm_vcpu *vcpu)
74 #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
75 if (vcpu->kvm->arch.is_sn2)
79 return ia64_getreg(_IA64_REG_AR_ITC);
82 static void kvm_flush_icache(unsigned long start, unsigned long len)
86 for (l = 0; l < (len + 32); l += 32)
87 ia64_fc((void *)(start + l));
93 static void kvm_flush_tlb_all(void)
95 unsigned long i, j, count0, count1, stride0, stride1, addr;
98 addr = local_cpu_data->ptce_base;
99 count0 = local_cpu_data->ptce_count[0];
100 count1 = local_cpu_data->ptce_count[1];
101 stride0 = local_cpu_data->ptce_stride[0];
102 stride1 = local_cpu_data->ptce_stride[1];
104 local_irq_save(flags);
105 for (i = 0; i < count0; ++i) {
106 for (j = 0; j < count1; ++j) {
112 local_irq_restore(flags);
113 ia64_srlz_i(); /* srlz.i implies srlz.d */
116 long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
118 struct ia64_pal_retval iprv;
120 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
126 static DEFINE_SPINLOCK(vp_lock);
128 int kvm_arch_hardware_enable(void)
133 unsigned long saved_psr;
136 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
137 local_irq_save(saved_psr);
138 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
139 local_irq_restore(saved_psr);
144 status = ia64_pal_vp_init_env(kvm_vsa_base ?
145 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
146 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
148 spin_unlock(&vp_lock);
149 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
154 kvm_vsa_base = tmp_base;
155 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
157 spin_unlock(&vp_lock);
158 ia64_ptr_entry(0x3, slot);
163 void kvm_arch_hardware_disable(void)
169 unsigned long saved_psr;
170 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
172 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
175 local_irq_save(saved_psr);
176 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
177 local_irq_restore(saved_psr);
181 status = ia64_pal_vp_exit_env(host_iva);
183 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
185 ia64_ptr_entry(0x3, slot);
188 void kvm_arch_check_processor_compat(void *rtn)
193 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
199 case KVM_CAP_IRQCHIP:
200 case KVM_CAP_MP_STATE:
201 case KVM_CAP_IRQ_INJECT_STATUS:
202 case KVM_CAP_IOAPIC_POLARITY_IGNORED:
205 case KVM_CAP_COALESCED_MMIO:
206 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
208 #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
210 r = iommu_present(&pci_bus_type);
220 static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
222 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
223 kvm_run->hw.hardware_exit_reason = 1;
227 static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
229 struct kvm_mmio_req *p;
230 struct kvm_io_device *mmio_dev;
233 p = kvm_get_vcpu_ioreq(vcpu);
235 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
237 vcpu->mmio_needed = 1;
238 vcpu->mmio_fragments[0].gpa = kvm_run->mmio.phys_addr = p->addr;
239 vcpu->mmio_fragments[0].len = kvm_run->mmio.len = p->size;
240 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
242 if (vcpu->mmio_is_write)
243 memcpy(vcpu->arch.mmio_data, &p->data, p->size);
244 memcpy(kvm_run->mmio.data, &p->data, p->size);
245 kvm_run->exit_reason = KVM_EXIT_MMIO;
249 r = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, p->addr,
252 r = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, p->addr,
255 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
256 p->state = STATE_IORESP_READY;
261 static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
263 struct exit_ctl_data *p;
265 p = kvm_get_exit_data(vcpu);
267 if (p->exit_reason == EXIT_REASON_PAL_CALL)
268 return kvm_pal_emul(vcpu, kvm_run);
270 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
271 kvm_run->hw.hardware_exit_reason = 2;
276 static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
278 struct exit_ctl_data *p;
280 p = kvm_get_exit_data(vcpu);
282 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
286 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
287 kvm_run->hw.hardware_exit_reason = 3;
293 static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
295 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
297 if (!test_and_set_bit(vector, &vpd->irr[0])) {
298 vcpu->arch.irq_new_pending = 1;
306 * offset: address offset to IPI space.
307 * value: deliver value.
309 static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
324 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
327 __apic_accept_irq(vcpu, vector);
330 static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
335 struct kvm_vcpu *vcpu;
337 kvm_for_each_vcpu(i, vcpu, kvm) {
338 lid.val = VCPU_LID(vcpu);
339 if (lid.id == id && lid.eid == eid)
346 static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
348 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
349 struct kvm_vcpu *target_vcpu;
350 struct kvm_pt_regs *regs;
351 union ia64_ipi_a addr = p->u.ipi_data.addr;
352 union ia64_ipi_d data = p->u.ipi_data.data;
354 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
356 return handle_vm_error(vcpu, kvm_run);
358 if (!target_vcpu->arch.launched) {
359 regs = vcpu_regs(target_vcpu);
361 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
362 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
364 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
365 if (waitqueue_active(&target_vcpu->wq))
366 wake_up_interruptible(&target_vcpu->wq);
368 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
369 if (target_vcpu != vcpu)
370 kvm_vcpu_kick(target_vcpu);
377 struct kvm_ptc_g ptc_g_data;
378 struct kvm_vcpu *vcpu;
381 static void vcpu_global_purge(void *info)
383 struct call_data *p = (struct call_data *)info;
384 struct kvm_vcpu *vcpu = p->vcpu;
386 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
389 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
390 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
391 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
394 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
395 vcpu->arch.ptc_g_count = 0;
396 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
400 static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
402 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
403 struct kvm *kvm = vcpu->kvm;
404 struct call_data call_data;
406 struct kvm_vcpu *vcpui;
408 call_data.ptc_g_data = p->u.ptc_g_data;
410 kvm_for_each_vcpu(i, vcpui, kvm) {
411 if (vcpui->arch.mp_state == KVM_MP_STATE_UNINITIALIZED ||
415 if (waitqueue_active(&vcpui->wq))
416 wake_up_interruptible(&vcpui->wq);
418 if (vcpui->cpu != -1) {
419 call_data.vcpu = vcpui;
420 smp_call_function_single(vcpui->cpu,
421 vcpu_global_purge, &call_data, 1);
423 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
429 static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
434 static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
436 unsigned long pte, rtc_phys_addr, map_addr;
439 map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
440 rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
441 pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
442 slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
443 vcpu->arch.sn_rtc_tr_slot = slot;
445 printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
451 int kvm_emulate_halt(struct kvm_vcpu *vcpu)
456 unsigned long vcpu_now_itc;
457 unsigned long expires;
458 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
459 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
460 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
462 if (irqchip_in_kernel(vcpu->kvm)) {
464 vcpu_now_itc = kvm_get_itc(vcpu) + vcpu->arch.itc_offset;
466 if (time_after(vcpu_now_itc, vpd->itm)) {
467 vcpu->arch.timer_check = 1;
470 itc_diff = vpd->itm - vcpu_now_itc;
472 itc_diff = -itc_diff;
474 expires = div64_u64(itc_diff, cyc_per_usec);
475 kt = ktime_set(0, 1000 * expires);
477 vcpu->arch.ht_active = 1;
478 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
480 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
481 kvm_vcpu_block(vcpu);
482 hrtimer_cancel(p_ht);
483 vcpu->arch.ht_active = 0;
485 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests) ||
486 kvm_cpu_has_pending_timer(vcpu))
487 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
488 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
490 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
494 printk(KERN_ERR"kvm: Unsupported userspace halt!");
499 static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
500 struct kvm_run *kvm_run)
502 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
506 static int handle_external_interrupt(struct kvm_vcpu *vcpu,
507 struct kvm_run *kvm_run)
512 static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
513 struct kvm_run *kvm_run)
515 printk("VMM: %s", vcpu->arch.log_buf);
519 static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
520 struct kvm_run *kvm_run) = {
521 [EXIT_REASON_VM_PANIC] = handle_vm_error,
522 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
523 [EXIT_REASON_PAL_CALL] = handle_pal_call,
524 [EXIT_REASON_SAL_CALL] = handle_sal_call,
525 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
526 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
527 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
528 [EXIT_REASON_IPI] = handle_ipi,
529 [EXIT_REASON_PTC_G] = handle_global_purge,
530 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
534 static const int kvm_vti_max_exit_handlers =
535 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
537 static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
539 struct exit_ctl_data *p_exit_data;
541 p_exit_data = kvm_get_exit_data(vcpu);
542 return p_exit_data->exit_reason;
546 * The guest has exited. See if we can fix it or if we need userspace
549 static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
551 u32 exit_reason = kvm_get_exit_reason(vcpu);
552 vcpu->arch.last_exit = exit_reason;
554 if (exit_reason < kvm_vti_max_exit_handlers
555 && kvm_vti_exit_handlers[exit_reason])
556 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
558 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
559 kvm_run->hw.hardware_exit_reason = exit_reason;
564 static inline void vti_set_rr6(unsigned long rr6)
566 ia64_set_rr(RR6, rr6);
570 static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
573 struct kvm *kvm = vcpu->kvm;
576 /*Insert a pair of tr to map vmm*/
577 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
578 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
581 vcpu->arch.vmm_tr_slot = r;
582 /*Insert a pairt of tr to map data of vm*/
583 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
584 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
585 pte, KVM_VM_DATA_SHIFT);
588 vcpu->arch.vm_tr_slot = r;
590 #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
591 if (kvm->arch.is_sn2) {
592 r = kvm_sn2_setup_mappings(vcpu);
603 static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
605 struct kvm *kvm = vcpu->kvm;
606 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
607 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
608 #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
609 if (kvm->arch.is_sn2)
610 ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
614 static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
618 int cpu = smp_processor_id();
620 if (vcpu->arch.last_run_cpu != cpu ||
621 per_cpu(last_vcpu, cpu) != vcpu) {
622 per_cpu(last_vcpu, cpu) = vcpu;
623 vcpu->arch.last_run_cpu = cpu;
627 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
628 vti_set_rr6(vcpu->arch.vmm_rr);
630 r = kvm_insert_vmm_mapping(vcpu);
631 local_irq_restore(psr);
635 static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
637 kvm_purge_vmm_mapping(vcpu);
638 vti_set_rr6(vcpu->arch.host_rr6);
641 static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
643 union context *host_ctx, *guest_ctx;
646 idx = srcu_read_lock(&vcpu->kvm->srcu);
649 if (signal_pending(current)) {
651 kvm_run->exit_reason = KVM_EXIT_INTR;
658 /*Get host and guest context with guest address space.*/
659 host_ctx = kvm_get_host_context(vcpu);
660 guest_ctx = kvm_get_guest_context(vcpu);
662 clear_bit(KVM_REQ_KICK, &vcpu->requests);
664 r = kvm_vcpu_pre_transition(vcpu);
668 srcu_read_unlock(&vcpu->kvm->srcu, idx);
669 vcpu->mode = IN_GUEST_MODE;
673 * Transition to the guest
675 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
677 kvm_vcpu_post_transition(vcpu);
679 vcpu->arch.launched = 1;
680 set_bit(KVM_REQ_KICK, &vcpu->requests);
684 * We must have an instruction between local_irq_enable() and
685 * kvm_guest_exit(), so the timer interrupt isn't delayed by
686 * the interrupt shadow. The stat.exits increment will do nicely.
687 * But we need to prevent reordering, hence this barrier():
691 vcpu->mode = OUTSIDE_GUEST_MODE;
694 idx = srcu_read_lock(&vcpu->kvm->srcu);
696 r = kvm_handle_exit(kvm_run, vcpu);
704 srcu_read_unlock(&vcpu->kvm->srcu, idx);
707 idx = srcu_read_lock(&vcpu->kvm->srcu);
716 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
720 static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
722 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
724 if (!vcpu->mmio_is_write)
725 memcpy(&p->data, vcpu->arch.mmio_data, 8);
726 p->state = STATE_IORESP_READY;
729 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
734 if (vcpu->sigset_active)
735 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
737 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
738 kvm_vcpu_block(vcpu);
739 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
744 if (vcpu->mmio_needed) {
745 memcpy(vcpu->arch.mmio_data, kvm_run->mmio.data, 8);
746 kvm_set_mmio_data(vcpu);
747 vcpu->mmio_read_completed = 1;
748 vcpu->mmio_needed = 0;
750 r = __vcpu_run(vcpu, kvm_run);
752 if (vcpu->sigset_active)
753 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
758 struct kvm *kvm_arch_alloc_vm(void)
764 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
766 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
771 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
772 kvm = (struct kvm *)(vm_base +
773 offsetof(struct kvm_vm_data, kvm_vm_struct));
774 kvm->arch.vm_base = vm_base;
775 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
780 struct kvm_ia64_io_range {
786 static const struct kvm_ia64_io_range io_ranges[] = {
787 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
788 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
789 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
790 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
791 {PIB_START, PIB_SIZE, GPFN_PIB},
794 static void kvm_build_io_pmt(struct kvm *kvm)
798 /* Mark I/O ranges */
799 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
801 for (j = io_ranges[i].start;
802 j < io_ranges[i].start + io_ranges[i].size;
804 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
805 io_ranges[i].type, 0);
810 /*Use unused rids to virtualize guest rid.*/
811 #define GUEST_PHYSICAL_RR0 0x1739
812 #define GUEST_PHYSICAL_RR4 0x2739
813 #define VMM_INIT_RR 0x1660
815 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
822 kvm->arch.is_sn2 = ia64_platform_is("sn2");
824 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
825 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
826 kvm->arch.vmm_init_rr = VMM_INIT_RR;
829 *Fill P2M entries for MMIO/IO ranges
831 kvm_build_io_pmt(kvm);
833 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
835 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
836 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
841 static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
842 struct kvm_irqchip *chip)
847 switch (chip->chip_id) {
848 case KVM_IRQCHIP_IOAPIC:
849 r = kvm_get_ioapic(kvm, &chip->chip.ioapic);
858 static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
863 switch (chip->chip_id) {
864 case KVM_IRQCHIP_IOAPIC:
865 r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
874 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
876 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
878 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
881 for (i = 0; i < 16; i++) {
882 vpd->vgr[i] = regs->vpd.vgr[i];
883 vpd->vbgr[i] = regs->vpd.vbgr[i];
885 for (i = 0; i < 128; i++)
886 vpd->vcr[i] = regs->vpd.vcr[i];
887 vpd->vhpi = regs->vpd.vhpi;
888 vpd->vnat = regs->vpd.vnat;
889 vpd->vbnat = regs->vpd.vbnat;
890 vpd->vpsr = regs->vpd.vpsr;
892 vpd->vpr = regs->vpd.vpr;
894 memcpy(&vcpu->arch.guest, ®s->saved_guest, sizeof(union context));
896 RESTORE_REGS(mp_state);
897 RESTORE_REGS(vmm_rr);
898 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
899 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
900 RESTORE_REGS(itr_regions);
901 RESTORE_REGS(dtr_regions);
902 RESTORE_REGS(tc_regions);
903 RESTORE_REGS(irq_check);
904 RESTORE_REGS(itc_check);
905 RESTORE_REGS(timer_check);
906 RESTORE_REGS(timer_pending);
907 RESTORE_REGS(last_itc);
908 for (i = 0; i < 8; i++) {
909 vcpu->arch.vrr[i] = regs->vrr[i];
910 vcpu->arch.ibr[i] = regs->ibr[i];
911 vcpu->arch.dbr[i] = regs->dbr[i];
913 for (i = 0; i < 4; i++)
914 vcpu->arch.insvc[i] = regs->insvc[i];
916 RESTORE_REGS(metaphysical_rr0);
917 RESTORE_REGS(metaphysical_rr4);
918 RESTORE_REGS(metaphysical_saved_rr0);
919 RESTORE_REGS(metaphysical_saved_rr4);
920 RESTORE_REGS(fp_psr);
921 RESTORE_REGS(saved_gp);
923 vcpu->arch.irq_new_pending = 1;
924 vcpu->arch.itc_offset = regs->saved_itc - kvm_get_itc(vcpu);
925 set_bit(KVM_REQ_RESUME, &vcpu->requests);
930 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
933 if (!irqchip_in_kernel(kvm))
936 irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
937 irq_event->irq, irq_event->level,
942 long kvm_arch_vm_ioctl(struct file *filp,
943 unsigned int ioctl, unsigned long arg)
945 struct kvm *kvm = filp->private_data;
946 void __user *argp = (void __user *)arg;
950 case KVM_CREATE_IRQCHIP:
952 r = kvm_ioapic_init(kvm);
955 r = kvm_setup_default_irq_routing(kvm);
957 mutex_lock(&kvm->slots_lock);
958 kvm_ioapic_destroy(kvm);
959 mutex_unlock(&kvm->slots_lock);
963 case KVM_GET_IRQCHIP: {
964 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
965 struct kvm_irqchip chip;
968 if (copy_from_user(&chip, argp, sizeof chip))
971 if (!irqchip_in_kernel(kvm))
973 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
977 if (copy_to_user(argp, &chip, sizeof chip))
982 case KVM_SET_IRQCHIP: {
983 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
984 struct kvm_irqchip chip;
987 if (copy_from_user(&chip, argp, sizeof chip))
990 if (!irqchip_in_kernel(kvm))
992 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
1005 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1006 struct kvm_sregs *sregs)
1011 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1012 struct kvm_sregs *sregs)
1017 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1018 struct kvm_translation *tr)
1024 static int kvm_alloc_vmm_area(void)
1026 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1027 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1028 get_order(KVM_VMM_SIZE));
1032 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1033 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1035 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1036 kvm_vmm_base, kvm_vm_buffer);
1042 static void kvm_free_vmm_area(void)
1045 /*Zero this area before free to avoid bits leak!!*/
1046 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1047 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1054 static int vti_init_vpd(struct kvm_vcpu *vcpu)
1057 union cpuid3_t cpuid3;
1058 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1061 return PTR_ERR(vpd);
1064 for (i = 0; i < 5; i++)
1065 vpd->vcpuid[i] = ia64_get_cpuid(i);
1067 /* Limit the CPUID number to 5 */
1068 cpuid3.value = vpd->vcpuid[3];
1069 cpuid3.number = 4; /* 5 - 1 */
1070 vpd->vcpuid[3] = cpuid3.value;
1072 /*Set vac and vdc fields*/
1073 vpd->vac.a_from_int_cr = 1;
1074 vpd->vac.a_to_int_cr = 1;
1075 vpd->vac.a_from_psr = 1;
1076 vpd->vac.a_from_cpuid = 1;
1077 vpd->vac.a_cover = 1;
1080 vpd->vdc.d_vmsw = 1;
1082 /*Set virtual buffer*/
1083 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1088 static int vti_create_vp(struct kvm_vcpu *vcpu)
1091 struct vpd *vpd = vcpu->arch.vpd;
1092 unsigned long vmm_ivt;
1094 vmm_ivt = kvm_vmm_info->vmm_ivt;
1096 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1098 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1101 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1107 static void init_ptce_info(struct kvm_vcpu *vcpu)
1109 ia64_ptce_info_t ptce = {0};
1111 ia64_get_ptce(&ptce);
1112 vcpu->arch.ptce_base = ptce.base;
1113 vcpu->arch.ptce_count[0] = ptce.count[0];
1114 vcpu->arch.ptce_count[1] = ptce.count[1];
1115 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1116 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1119 static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1121 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1123 if (hrtimer_cancel(p_ht))
1124 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
1127 static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1129 struct kvm_vcpu *vcpu;
1130 wait_queue_head_t *q;
1132 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
1135 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
1138 if (waitqueue_active(q))
1139 wake_up_interruptible(q);
1142 vcpu->arch.timer_fired = 1;
1143 vcpu->arch.timer_check = 1;
1144 return HRTIMER_NORESTART;
1147 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1149 bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
1151 return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL);
1154 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1160 struct kvm *kvm = vcpu->kvm;
1161 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1163 union context *p_ctx = &vcpu->arch.guest;
1164 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1166 /*Init vcpu context for first run.*/
1167 if (IS_ERR(vmm_vcpu))
1168 return PTR_ERR(vmm_vcpu);
1170 if (kvm_vcpu_is_bsp(vcpu)) {
1171 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
1173 /*Set entry address for first run.*/
1174 regs->cr_iip = PALE_RESET_ENTRY;
1176 /*Initialize itc offset for vcpus*/
1177 itc_offset = 0UL - kvm_get_itc(vcpu);
1178 for (i = 0; i < KVM_MAX_VCPUS; i++) {
1179 v = (struct kvm_vcpu *)((char *)vcpu +
1180 sizeof(struct kvm_vcpu_data) * i);
1181 v->arch.itc_offset = itc_offset;
1182 v->arch.last_itc = 0;
1185 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
1188 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1189 if (!vcpu->arch.apic)
1191 vcpu->arch.apic->vcpu = vcpu;
1194 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
1195 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1196 p_ctx->psr = 0x1008522000UL;
1197 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1198 p_ctx->caller_unat = 0;
1200 p_ctx->ar[36] = 0x0; /*unat*/
1201 p_ctx->ar[19] = 0x0; /*rnat*/
1202 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1203 ((sizeof(struct kvm_vcpu)+15) & ~15);
1204 p_ctx->ar[64] = 0x0; /*pfs*/
1205 p_ctx->cr[0] = 0x7e04UL;
1206 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1207 p_ctx->cr[8] = 0x3c;
1209 /*Initialize region register*/
1210 p_ctx->rr[0] = 0x30;
1211 p_ctx->rr[1] = 0x30;
1212 p_ctx->rr[2] = 0x30;
1213 p_ctx->rr[3] = 0x30;
1214 p_ctx->rr[4] = 0x30;
1215 p_ctx->rr[5] = 0x30;
1216 p_ctx->rr[7] = 0x30;
1218 /*Initialize branch register 0*/
1219 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1221 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1222 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1223 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1225 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1226 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1228 vcpu->arch.last_run_cpu = -1;
1229 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
1230 vcpu->arch.vsa_base = kvm_vsa_base;
1231 vcpu->arch.__gp = kvm_vmm_gp;
1232 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
1233 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1234 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
1235 init_ptce_info(vcpu);
1242 static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1247 local_irq_save(psr);
1248 r = kvm_insert_vmm_mapping(vcpu);
1249 local_irq_restore(psr);
1252 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1256 r = vti_init_vpd(vcpu);
1258 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1262 r = vti_create_vp(vcpu);
1266 kvm_purge_vmm_mapping(vcpu);
1270 kvm_vcpu_uninit(vcpu);
1275 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1278 struct kvm_vcpu *vcpu;
1279 unsigned long vm_base = kvm->arch.vm_base;
1283 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1286 if (id >= KVM_MAX_VCPUS) {
1287 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1294 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1297 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1298 vcpu_data[id].vcpu_struct));
1302 r = vti_vcpu_setup(vcpu, id);
1306 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1315 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1320 int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
1325 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1330 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1335 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1336 struct kvm_guest_debug *dbg)
1341 void kvm_arch_free_vm(struct kvm *kvm)
1343 unsigned long vm_base = kvm->arch.vm_base;
1346 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1347 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1352 static void kvm_release_vm_pages(struct kvm *kvm)
1354 struct kvm_memslots *slots;
1355 struct kvm_memory_slot *memslot;
1358 slots = kvm_memslots(kvm);
1359 kvm_for_each_memslot(memslot, slots) {
1360 for (j = 0; j < memslot->npages; j++) {
1361 if (memslot->rmap[j])
1362 put_page((struct page *)memslot->rmap[j]);
1367 void kvm_arch_destroy_vm(struct kvm *kvm)
1369 kvm_iommu_unmap_guest(kvm);
1370 kvm_free_all_assigned_devices(kvm);
1371 kfree(kvm->arch.vioapic);
1372 kvm_release_vm_pages(kvm);
1375 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1377 if (cpu != vcpu->cpu) {
1379 if (vcpu->arch.ht_active)
1380 kvm_migrate_hlt_timer(vcpu);
1384 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1386 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1388 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1393 for (i = 0; i < 16; i++) {
1394 regs->vpd.vgr[i] = vpd->vgr[i];
1395 regs->vpd.vbgr[i] = vpd->vbgr[i];
1397 for (i = 0; i < 128; i++)
1398 regs->vpd.vcr[i] = vpd->vcr[i];
1399 regs->vpd.vhpi = vpd->vhpi;
1400 regs->vpd.vnat = vpd->vnat;
1401 regs->vpd.vbnat = vpd->vbnat;
1402 regs->vpd.vpsr = vpd->vpsr;
1403 regs->vpd.vpr = vpd->vpr;
1405 memcpy(®s->saved_guest, &vcpu->arch.guest, sizeof(union context));
1407 SAVE_REGS(mp_state);
1409 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1410 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1411 SAVE_REGS(itr_regions);
1412 SAVE_REGS(dtr_regions);
1413 SAVE_REGS(tc_regions);
1414 SAVE_REGS(irq_check);
1415 SAVE_REGS(itc_check);
1416 SAVE_REGS(timer_check);
1417 SAVE_REGS(timer_pending);
1418 SAVE_REGS(last_itc);
1419 for (i = 0; i < 8; i++) {
1420 regs->vrr[i] = vcpu->arch.vrr[i];
1421 regs->ibr[i] = vcpu->arch.ibr[i];
1422 regs->dbr[i] = vcpu->arch.dbr[i];
1424 for (i = 0; i < 4; i++)
1425 regs->insvc[i] = vcpu->arch.insvc[i];
1426 regs->saved_itc = vcpu->arch.itc_offset + kvm_get_itc(vcpu);
1428 SAVE_REGS(metaphysical_rr0);
1429 SAVE_REGS(metaphysical_rr4);
1430 SAVE_REGS(metaphysical_saved_rr0);
1431 SAVE_REGS(metaphysical_saved_rr4);
1433 SAVE_REGS(saved_gp);
1439 int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1440 struct kvm_ia64_vcpu_stack *stack)
1442 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1446 int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1447 struct kvm_ia64_vcpu_stack *stack)
1449 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1450 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1452 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1456 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1459 hrtimer_cancel(&vcpu->arch.hlt_timer);
1460 kfree(vcpu->arch.apic);
1463 long kvm_arch_vcpu_ioctl(struct file *filp,
1464 unsigned int ioctl, unsigned long arg)
1466 struct kvm_vcpu *vcpu = filp->private_data;
1467 void __user *argp = (void __user *)arg;
1468 struct kvm_ia64_vcpu_stack *stack = NULL;
1472 case KVM_IA64_VCPU_GET_STACK: {
1473 struct kvm_ia64_vcpu_stack __user *user_stack;
1474 void __user *first_p = argp;
1477 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1480 if (!access_ok(VERIFY_WRITE, user_stack,
1481 sizeof(struct kvm_ia64_vcpu_stack))) {
1482 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1483 "Illegal user destination address for stack\n");
1486 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1492 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1496 if (copy_to_user(user_stack, stack,
1497 sizeof(struct kvm_ia64_vcpu_stack))) {
1504 case KVM_IA64_VCPU_SET_STACK: {
1505 struct kvm_ia64_vcpu_stack __user *user_stack;
1506 void __user *first_p = argp;
1509 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1512 if (!access_ok(VERIFY_READ, user_stack,
1513 sizeof(struct kvm_ia64_vcpu_stack))) {
1514 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1515 "Illegal user address for stack\n");
1518 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1523 if (copy_from_user(stack, user_stack,
1524 sizeof(struct kvm_ia64_vcpu_stack)))
1527 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1540 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
1542 return VM_FAULT_SIGBUS;
1545 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
1546 unsigned long npages)
1551 int kvm_arch_prepare_memory_region(struct kvm *kvm,
1552 struct kvm_memory_slot *memslot,
1553 struct kvm_userspace_memory_region *mem,
1554 enum kvm_mr_change change)
1558 int npages = memslot->npages;
1559 unsigned long base_gfn = memslot->base_gfn;
1561 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1564 for (i = 0; i < npages; i++) {
1565 pfn = gfn_to_pfn(kvm, base_gfn + i);
1566 if (!kvm_is_mmio_pfn(pfn)) {
1567 kvm_set_pmt_entry(kvm, base_gfn + i,
1569 _PAGE_AR_RWX | _PAGE_MA_WB);
1570 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1572 kvm_set_pmt_entry(kvm, base_gfn + i,
1573 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1575 memslot->rmap[i] = 0;
1582 void kvm_arch_flush_shadow_all(struct kvm *kvm)
1584 kvm_flush_remote_tlbs(kvm);
1587 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
1588 struct kvm_memory_slot *slot)
1590 kvm_arch_flush_shadow_all();
1593 long kvm_arch_dev_ioctl(struct file *filp,
1594 unsigned int ioctl, unsigned long arg)
1599 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1601 kvm_vcpu_uninit(vcpu);
1604 static int vti_cpu_has_kvm_support(void)
1606 long avail = 1, status = 1, control = 1;
1609 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1613 if (!(avail & PAL_PROC_VM_BIT))
1616 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1618 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1621 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1623 if (!(vp_env_info & VP_OPCODE)) {
1624 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1625 "vm_env_info:0x%lx\n", vp_env_info);
1635 * On SN2, the ITC isn't stable, so copy in fast path code to use the
1636 * SN2 RTC, replacing the ITC based default verion.
1638 static void kvm_patch_vmm(struct kvm_vmm_info *vmm_info,
1639 struct module *module)
1641 unsigned long new_ar, new_ar_sn2;
1642 unsigned long module_base;
1644 if (!ia64_platform_is("sn2"))
1647 module_base = (unsigned long)module->module_core;
1649 new_ar = kvm_vmm_base + vmm_info->patch_mov_ar - module_base;
1650 new_ar_sn2 = kvm_vmm_base + vmm_info->patch_mov_ar_sn2 - module_base;
1652 printk(KERN_INFO "kvm: Patching ITC emulation to use SGI SN2 RTC "
1656 * Copy the SN2 version of mov_ar into place. They are both
1657 * the same size, so 6 bundles is sufficient (6 * 0x10).
1659 memcpy((void *)new_ar, (void *)new_ar_sn2, 0x60);
1662 static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
1663 struct module *module)
1665 unsigned long module_base;
1666 unsigned long vmm_size;
1668 unsigned long vmm_offset, func_offset, fdesc_offset;
1669 struct fdesc *p_fdesc;
1673 if (!kvm_vmm_base) {
1674 printk("kvm: kvm area hasn't been initialized yet!!\n");
1678 /*Calculate new position of relocated vmm module.*/
1679 module_base = (unsigned long)module->module_core;
1680 vmm_size = module->core_size;
1681 if (unlikely(vmm_size > KVM_VMM_SIZE))
1684 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
1685 kvm_patch_vmm(vmm_info, module);
1686 kvm_flush_icache(kvm_vmm_base, vmm_size);
1688 /*Recalculate kvm_vmm_info based on new VMM*/
1689 vmm_offset = vmm_info->vmm_ivt - module_base;
1690 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1691 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1692 kvm_vmm_info->vmm_ivt);
1694 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1695 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1697 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1698 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1699 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1700 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1702 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1703 KVM_VMM_BASE+func_offset);
1705 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1706 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1708 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1709 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1710 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1711 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1713 kvm_vmm_gp = p_fdesc->gp;
1715 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1716 kvm_vmm_info->vmm_entry);
1717 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1718 KVM_VMM_BASE + func_offset);
1723 int kvm_arch_init(void *opaque)
1726 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1728 if (!vti_cpu_has_kvm_support()) {
1729 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1735 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1741 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1745 if (kvm_alloc_vmm_area())
1748 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1755 kvm_free_vmm_area();
1757 kfree(kvm_vmm_info);
1762 void kvm_arch_exit(void)
1764 kvm_free_vmm_area();
1765 kfree(kvm_vmm_info);
1766 kvm_vmm_info = NULL;
1769 static void kvm_ia64_sync_dirty_log(struct kvm *kvm,
1770 struct kvm_memory_slot *memslot)
1775 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1776 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
1778 n = kvm_dirty_bitmap_bytes(memslot);
1779 base = memslot->base_gfn / BITS_PER_LONG;
1781 spin_lock(&kvm->arch.dirty_log_lock);
1782 for (i = 0; i < n/sizeof(long); ++i) {
1783 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1784 dirty_bitmap[base + i] = 0;
1786 spin_unlock(&kvm->arch.dirty_log_lock);
1789 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1790 struct kvm_dirty_log *log)
1794 struct kvm_memory_slot *memslot;
1797 mutex_lock(&kvm->slots_lock);
1800 if (log->slot >= KVM_USER_MEM_SLOTS)
1803 memslot = id_to_memslot(kvm->memslots, log->slot);
1805 if (!memslot->dirty_bitmap)
1808 kvm_ia64_sync_dirty_log(kvm, memslot);
1809 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1813 /* If nothing is dirty, don't bother messing with page tables. */
1815 kvm_flush_remote_tlbs(kvm);
1816 n = kvm_dirty_bitmap_bytes(memslot);
1817 memset(memslot->dirty_bitmap, 0, n);
1821 mutex_unlock(&kvm->slots_lock);
1825 int kvm_arch_hardware_setup(void)
1830 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
1832 return __apic_accept_irq(vcpu, irq->vector);
1835 int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1837 return apic->vcpu->vcpu_id == dest;
1840 int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1845 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
1847 return vcpu1->arch.xtp - vcpu2->arch.xtp;
1850 int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
1851 int short_hand, int dest, int dest_mode)
1853 struct kvm_lapic *target = vcpu->arch.apic;
1854 return (dest_mode == 0) ?
1855 kvm_apic_match_physical_addr(target, dest) :
1856 kvm_apic_match_logical_addr(target, dest);
1859 static int find_highest_bits(int *dat)
1864 /* loop for all 256 bits */
1865 for (i = 7; i >= 0 ; i--) {
1869 return i * 32 + bitnum - 1;
1876 int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1878 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1880 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1882 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1883 return ExtINT_VECTOR;
1885 return find_highest_bits((int *)&vpd->irr[0]);
1888 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1890 return vcpu->arch.timer_fired;
1893 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1895 return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE) ||
1896 (kvm_highest_pending_irq(vcpu) != -1);
1899 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
1901 return (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests));
1904 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1905 struct kvm_mp_state *mp_state)
1907 mp_state->mp_state = vcpu->arch.mp_state;
1911 static int vcpu_reset(struct kvm_vcpu *vcpu)
1915 local_irq_save(psr);
1916 r = kvm_insert_vmm_mapping(vcpu);
1917 local_irq_restore(psr);
1921 vcpu->arch.launched = 0;
1922 kvm_arch_vcpu_uninit(vcpu);
1923 r = kvm_arch_vcpu_init(vcpu);
1927 kvm_purge_vmm_mapping(vcpu);
1933 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1934 struct kvm_mp_state *mp_state)
1938 vcpu->arch.mp_state = mp_state->mp_state;
1939 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1940 r = vcpu_reset(vcpu);