2 * kvm_ia64.c: Basic KVM suppport 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>
26 #include <linux/gfp.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>
37 #include <asm/pgtable.h>
38 #include <asm/gcc_intrin.h>
40 #include <asm/cacheflush.h>
41 #include <asm/div64.h>
44 #include <asm/sn/addrs.h>
45 #include <asm/sn/clksupport.h>
46 #include <asm/sn/shub_mmr.h>
55 static unsigned long kvm_vmm_base;
56 static unsigned long kvm_vsa_base;
57 static unsigned long kvm_vm_buffer;
58 static unsigned long kvm_vm_buffer_size;
59 unsigned long kvm_vmm_gp;
61 static long vp_env_info;
63 static struct kvm_vmm_info *kvm_vmm_info;
65 static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
67 struct kvm_stats_debugfs_item debugfs_entries[] = {
71 static void kvm_flush_icache(unsigned long start, unsigned long len)
75 for (l = 0; l < (len + 32); l += 32)
76 ia64_fc((void *)(start + l));
82 static void kvm_flush_tlb_all(void)
84 unsigned long i, j, count0, count1, stride0, stride1, addr;
87 addr = local_cpu_data->ptce_base;
88 count0 = local_cpu_data->ptce_count[0];
89 count1 = local_cpu_data->ptce_count[1];
90 stride0 = local_cpu_data->ptce_stride[0];
91 stride1 = local_cpu_data->ptce_stride[1];
93 local_irq_save(flags);
94 for (i = 0; i < count0; ++i) {
95 for (j = 0; j < count1; ++j) {
101 local_irq_restore(flags);
102 ia64_srlz_i(); /* srlz.i implies srlz.d */
105 long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
107 struct ia64_pal_retval iprv;
109 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
115 static DEFINE_SPINLOCK(vp_lock);
117 void kvm_arch_hardware_enable(void *garbage)
122 unsigned long saved_psr;
125 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
126 local_irq_save(saved_psr);
127 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
128 local_irq_restore(saved_psr);
133 status = ia64_pal_vp_init_env(kvm_vsa_base ?
134 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
135 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
137 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
142 kvm_vsa_base = tmp_base;
143 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
145 spin_unlock(&vp_lock);
146 ia64_ptr_entry(0x3, slot);
149 void kvm_arch_hardware_disable(void *garbage)
155 unsigned long saved_psr;
156 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
158 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
161 local_irq_save(saved_psr);
162 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
163 local_irq_restore(saved_psr);
167 status = ia64_pal_vp_exit_env(host_iva);
169 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
171 ia64_ptr_entry(0x3, slot);
174 void kvm_arch_check_processor_compat(void *rtn)
179 int kvm_dev_ioctl_check_extension(long ext)
185 case KVM_CAP_IRQCHIP:
186 case KVM_CAP_MP_STATE:
187 case KVM_CAP_IRQ_INJECT_STATUS:
190 case KVM_CAP_COALESCED_MMIO:
191 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
203 static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
204 gpa_t addr, int len, int is_write)
206 struct kvm_io_device *dev;
208 dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
213 static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
215 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
216 kvm_run->hw.hardware_exit_reason = 1;
220 static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
222 struct kvm_mmio_req *p;
223 struct kvm_io_device *mmio_dev;
225 p = kvm_get_vcpu_ioreq(vcpu);
227 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
229 vcpu->mmio_needed = 1;
230 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
231 vcpu->mmio_size = kvm_run->mmio.len = p->size;
232 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
234 if (vcpu->mmio_is_write)
235 memcpy(vcpu->mmio_data, &p->data, p->size);
236 memcpy(kvm_run->mmio.data, &p->data, p->size);
237 kvm_run->exit_reason = KVM_EXIT_MMIO;
240 mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
243 kvm_iodevice_write(mmio_dev, p->addr, p->size,
246 kvm_iodevice_read(mmio_dev, p->addr, p->size,
250 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
251 p->state = STATE_IORESP_READY;
256 static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
258 struct exit_ctl_data *p;
260 p = kvm_get_exit_data(vcpu);
262 if (p->exit_reason == EXIT_REASON_PAL_CALL)
263 return kvm_pal_emul(vcpu, kvm_run);
265 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
266 kvm_run->hw.hardware_exit_reason = 2;
271 static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
273 struct exit_ctl_data *p;
275 p = kvm_get_exit_data(vcpu);
277 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
281 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
282 kvm_run->hw.hardware_exit_reason = 3;
288 static int __apic_accept_irq(struct kvm_vcpu *vcpu, uint64_t vector)
290 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
292 if (!test_and_set_bit(vector, &vpd->irr[0])) {
293 vcpu->arch.irq_new_pending = 1;
301 * offset: address offset to IPI space.
302 * value: deliver value.
304 static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
319 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
322 __apic_accept_irq(vcpu, vector);
325 static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
331 for (i = 0; i < kvm->arch.online_vcpus; i++) {
333 lid.val = VCPU_LID(kvm->vcpus[i]);
334 if (lid.id == id && lid.eid == eid)
335 return kvm->vcpus[i];
342 static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
344 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
345 struct kvm_vcpu *target_vcpu;
346 struct kvm_pt_regs *regs;
347 union ia64_ipi_a addr = p->u.ipi_data.addr;
348 union ia64_ipi_d data = p->u.ipi_data.data;
350 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
352 return handle_vm_error(vcpu, kvm_run);
354 if (!target_vcpu->arch.launched) {
355 regs = vcpu_regs(target_vcpu);
357 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
358 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
360 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
361 if (waitqueue_active(&target_vcpu->wq))
362 wake_up_interruptible(&target_vcpu->wq);
364 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
365 if (target_vcpu != vcpu)
366 kvm_vcpu_kick(target_vcpu);
373 struct kvm_ptc_g ptc_g_data;
374 struct kvm_vcpu *vcpu;
377 static void vcpu_global_purge(void *info)
379 struct call_data *p = (struct call_data *)info;
380 struct kvm_vcpu *vcpu = p->vcpu;
382 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
385 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
386 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
387 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
390 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
391 vcpu->arch.ptc_g_count = 0;
392 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
396 static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
398 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
399 struct kvm *kvm = vcpu->kvm;
400 struct call_data call_data;
403 call_data.ptc_g_data = p->u.ptc_g_data;
405 for (i = 0; i < kvm->arch.online_vcpus; i++) {
406 if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
407 KVM_MP_STATE_UNINITIALIZED ||
408 vcpu == kvm->vcpus[i])
411 if (waitqueue_active(&kvm->vcpus[i]->wq))
412 wake_up_interruptible(&kvm->vcpus[i]->wq);
414 if (kvm->vcpus[i]->cpu != -1) {
415 call_data.vcpu = kvm->vcpus[i];
416 smp_call_function_single(kvm->vcpus[i]->cpu,
417 vcpu_global_purge, &call_data, 1);
419 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
425 static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
430 static int kvm_sn2_setup_mappings(struct kvm_vcpu *vcpu)
432 unsigned long pte, rtc_phys_addr, map_addr;
435 map_addr = KVM_VMM_BASE + (1UL << KVM_VMM_SHIFT);
436 rtc_phys_addr = LOCAL_MMR_OFFSET | SH_RTC;
437 pte = pte_val(mk_pte_phys(rtc_phys_addr, PAGE_KERNEL_UC));
438 slot = ia64_itr_entry(0x3, map_addr, pte, PAGE_SHIFT);
439 vcpu->arch.sn_rtc_tr_slot = slot;
441 printk(KERN_ERR "Mayday mayday! RTC mapping failed!\n");
447 int kvm_emulate_halt(struct kvm_vcpu *vcpu)
452 unsigned long vcpu_now_itc;
453 unsigned long expires;
454 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
455 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
456 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
458 if (irqchip_in_kernel(vcpu->kvm)) {
460 vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
462 if (time_after(vcpu_now_itc, vpd->itm)) {
463 vcpu->arch.timer_check = 1;
466 itc_diff = vpd->itm - vcpu_now_itc;
468 itc_diff = -itc_diff;
470 expires = div64_u64(itc_diff, cyc_per_usec);
471 kt = ktime_set(0, 1000 * expires);
473 vcpu->arch.ht_active = 1;
474 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
476 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
477 kvm_vcpu_block(vcpu);
478 hrtimer_cancel(p_ht);
479 vcpu->arch.ht_active = 0;
481 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
482 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
483 vcpu->arch.mp_state =
484 KVM_MP_STATE_RUNNABLE;
486 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
490 printk(KERN_ERR"kvm: Unsupported userspace halt!");
495 static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
496 struct kvm_run *kvm_run)
498 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
502 static int handle_external_interrupt(struct kvm_vcpu *vcpu,
503 struct kvm_run *kvm_run)
508 static int handle_vcpu_debug(struct kvm_vcpu *vcpu,
509 struct kvm_run *kvm_run)
511 printk("VMM: %s", vcpu->arch.log_buf);
515 static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
516 struct kvm_run *kvm_run) = {
517 [EXIT_REASON_VM_PANIC] = handle_vm_error,
518 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
519 [EXIT_REASON_PAL_CALL] = handle_pal_call,
520 [EXIT_REASON_SAL_CALL] = handle_sal_call,
521 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
522 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
523 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
524 [EXIT_REASON_IPI] = handle_ipi,
525 [EXIT_REASON_PTC_G] = handle_global_purge,
526 [EXIT_REASON_DEBUG] = handle_vcpu_debug,
530 static const int kvm_vti_max_exit_handlers =
531 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
533 static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
535 struct exit_ctl_data *p_exit_data;
537 p_exit_data = kvm_get_exit_data(vcpu);
538 return p_exit_data->exit_reason;
542 * The guest has exited. See if we can fix it or if we need userspace
545 static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
547 u32 exit_reason = kvm_get_exit_reason(vcpu);
548 vcpu->arch.last_exit = exit_reason;
550 if (exit_reason < kvm_vti_max_exit_handlers
551 && kvm_vti_exit_handlers[exit_reason])
552 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
554 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
555 kvm_run->hw.hardware_exit_reason = exit_reason;
560 static inline void vti_set_rr6(unsigned long rr6)
562 ia64_set_rr(RR6, rr6);
566 static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
569 struct kvm *kvm = vcpu->kvm;
572 /*Insert a pair of tr to map vmm*/
573 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
574 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
577 vcpu->arch.vmm_tr_slot = r;
578 /*Insert a pairt of tr to map data of vm*/
579 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
580 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
581 pte, KVM_VM_DATA_SHIFT);
584 vcpu->arch.vm_tr_slot = r;
586 #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
587 if (kvm->arch.is_sn2) {
588 r = kvm_sn2_setup_mappings(vcpu);
599 static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
601 struct kvm *kvm = vcpu->kvm;
602 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
603 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
604 #if defined(CONFIG_IA64_SGI_SN2) || defined(CONFIG_IA64_GENERIC)
605 if (kvm->arch.is_sn2)
606 ia64_ptr_entry(0x3, vcpu->arch.sn_rtc_tr_slot);
610 static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
612 int cpu = smp_processor_id();
614 if (vcpu->arch.last_run_cpu != cpu ||
615 per_cpu(last_vcpu, cpu) != vcpu) {
616 per_cpu(last_vcpu, cpu) = vcpu;
617 vcpu->arch.last_run_cpu = cpu;
621 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
622 vti_set_rr6(vcpu->arch.vmm_rr);
623 return kvm_insert_vmm_mapping(vcpu);
625 static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
627 kvm_purge_vmm_mapping(vcpu);
628 vti_set_rr6(vcpu->arch.host_rr6);
631 static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
633 union context *host_ctx, *guest_ctx;
636 /*Get host and guest context with guest address space.*/
637 host_ctx = kvm_get_host_context(vcpu);
638 guest_ctx = kvm_get_guest_context(vcpu);
640 r = kvm_vcpu_pre_transition(vcpu);
643 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
644 kvm_vcpu_post_transition(vcpu);
650 static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
655 if (signal_pending(current)) {
657 kvm_run->exit_reason = KVM_EXIT_INTR;
662 * down_read() may sleep and return with interrupts enabled
664 down_read(&vcpu->kvm->slots_lock);
669 vcpu->guest_mode = 1;
671 r = vti_vcpu_run(vcpu, kvm_run);
675 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
679 vcpu->arch.launched = 1;
680 vcpu->guest_mode = 0;
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 up_read(&vcpu->kvm->slots_lock);
694 r = kvm_handle_exit(kvm_run, vcpu);
710 static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
712 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
714 if (!vcpu->mmio_is_write)
715 memcpy(&p->data, vcpu->mmio_data, 8);
716 p->state = STATE_IORESP_READY;
719 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
726 if (vcpu->sigset_active)
727 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
729 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
730 kvm_vcpu_block(vcpu);
731 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
736 if (vcpu->mmio_needed) {
737 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
738 kvm_set_mmio_data(vcpu);
739 vcpu->mmio_read_completed = 1;
740 vcpu->mmio_needed = 0;
742 r = __vcpu_run(vcpu, kvm_run);
744 if (vcpu->sigset_active)
745 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
751 static struct kvm *kvm_alloc_kvm(void)
757 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
759 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
762 return ERR_PTR(-ENOMEM);
764 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
765 kvm = (struct kvm *)(vm_base +
766 offsetof(struct kvm_vm_data, kvm_vm_struct));
767 kvm->arch.vm_base = vm_base;
768 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
773 struct kvm_io_range {
779 static const struct kvm_io_range io_ranges[] = {
780 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
781 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
782 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
783 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
784 {PIB_START, PIB_SIZE, GPFN_PIB},
787 static void kvm_build_io_pmt(struct kvm *kvm)
791 /* Mark I/O ranges */
792 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
794 for (j = io_ranges[i].start;
795 j < io_ranges[i].start + io_ranges[i].size;
797 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
798 io_ranges[i].type, 0);
803 /*Use unused rids to virtualize guest rid.*/
804 #define GUEST_PHYSICAL_RR0 0x1739
805 #define GUEST_PHYSICAL_RR4 0x2739
806 #define VMM_INIT_RR 0x1660
808 static void kvm_init_vm(struct kvm *kvm)
812 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
813 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
814 kvm->arch.vmm_init_rr = VMM_INIT_RR;
817 *Fill P2M entries for MMIO/IO ranges
819 kvm_build_io_pmt(kvm);
821 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
823 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
824 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
827 struct kvm *kvm_arch_create_vm(void)
829 struct kvm *kvm = kvm_alloc_kvm();
832 return ERR_PTR(-ENOMEM);
834 kvm->arch.is_sn2 = ia64_platform_is("sn2");
838 kvm->arch.online_vcpus = 0;
844 static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
845 struct kvm_irqchip *chip)
850 switch (chip->chip_id) {
851 case KVM_IRQCHIP_IOAPIC:
852 memcpy(&chip->chip.ioapic, ioapic_irqchip(kvm),
853 sizeof(struct kvm_ioapic_state));
862 static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
867 switch (chip->chip_id) {
868 case KVM_IRQCHIP_IOAPIC:
869 memcpy(ioapic_irqchip(kvm),
871 sizeof(struct kvm_ioapic_state));
880 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
882 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
884 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
889 for (i = 0; i < 16; i++) {
890 vpd->vgr[i] = regs->vpd.vgr[i];
891 vpd->vbgr[i] = regs->vpd.vbgr[i];
893 for (i = 0; i < 128; i++)
894 vpd->vcr[i] = regs->vpd.vcr[i];
895 vpd->vhpi = regs->vpd.vhpi;
896 vpd->vnat = regs->vpd.vnat;
897 vpd->vbnat = regs->vpd.vbnat;
898 vpd->vpsr = regs->vpd.vpsr;
900 vpd->vpr = regs->vpd.vpr;
902 memcpy(&vcpu->arch.guest, ®s->saved_guest, sizeof(union context));
904 RESTORE_REGS(mp_state);
905 RESTORE_REGS(vmm_rr);
906 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
907 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
908 RESTORE_REGS(itr_regions);
909 RESTORE_REGS(dtr_regions);
910 RESTORE_REGS(tc_regions);
911 RESTORE_REGS(irq_check);
912 RESTORE_REGS(itc_check);
913 RESTORE_REGS(timer_check);
914 RESTORE_REGS(timer_pending);
915 RESTORE_REGS(last_itc);
916 for (i = 0; i < 8; i++) {
917 vcpu->arch.vrr[i] = regs->vrr[i];
918 vcpu->arch.ibr[i] = regs->ibr[i];
919 vcpu->arch.dbr[i] = regs->dbr[i];
921 for (i = 0; i < 4; i++)
922 vcpu->arch.insvc[i] = regs->insvc[i];
924 RESTORE_REGS(metaphysical_rr0);
925 RESTORE_REGS(metaphysical_rr4);
926 RESTORE_REGS(metaphysical_saved_rr0);
927 RESTORE_REGS(metaphysical_saved_rr4);
928 RESTORE_REGS(fp_psr);
929 RESTORE_REGS(saved_gp);
931 vcpu->arch.irq_new_pending = 1;
932 vcpu->arch.itc_offset = regs->saved_itc - ia64_getreg(_IA64_REG_AR_ITC);
933 set_bit(KVM_REQ_RESUME, &vcpu->requests);
940 long kvm_arch_vm_ioctl(struct file *filp,
941 unsigned int ioctl, unsigned long arg)
943 struct kvm *kvm = filp->private_data;
944 void __user *argp = (void __user *)arg;
948 case KVM_SET_MEMORY_REGION: {
949 struct kvm_memory_region kvm_mem;
950 struct kvm_userspace_memory_region kvm_userspace_mem;
953 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
955 kvm_userspace_mem.slot = kvm_mem.slot;
956 kvm_userspace_mem.flags = kvm_mem.flags;
957 kvm_userspace_mem.guest_phys_addr =
958 kvm_mem.guest_phys_addr;
959 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
960 r = kvm_vm_ioctl_set_memory_region(kvm,
961 &kvm_userspace_mem, 0);
966 case KVM_CREATE_IRQCHIP:
968 r = kvm_ioapic_init(kvm);
971 r = kvm_setup_default_irq_routing(kvm);
973 kfree(kvm->arch.vioapic);
977 case KVM_IRQ_LINE_STATUS:
979 struct kvm_irq_level irq_event;
982 if (copy_from_user(&irq_event, argp, sizeof irq_event))
984 if (irqchip_in_kernel(kvm)) {
986 mutex_lock(&kvm->lock);
987 status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
988 irq_event.irq, irq_event.level);
989 mutex_unlock(&kvm->lock);
990 if (ioctl == KVM_IRQ_LINE_STATUS) {
991 irq_event.status = status;
992 if (copy_to_user(argp, &irq_event,
1000 case KVM_GET_IRQCHIP: {
1001 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
1002 struct kvm_irqchip chip;
1005 if (copy_from_user(&chip, argp, sizeof chip))
1008 if (!irqchip_in_kernel(kvm))
1010 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
1014 if (copy_to_user(argp, &chip, sizeof chip))
1019 case KVM_SET_IRQCHIP: {
1020 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
1021 struct kvm_irqchip chip;
1024 if (copy_from_user(&chip, argp, sizeof chip))
1027 if (!irqchip_in_kernel(kvm))
1029 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
1042 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
1043 struct kvm_sregs *sregs)
1048 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
1049 struct kvm_sregs *sregs)
1054 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1055 struct kvm_translation *tr)
1061 static int kvm_alloc_vmm_area(void)
1063 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1064 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1065 get_order(KVM_VMM_SIZE));
1069 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1070 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1072 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1073 kvm_vmm_base, kvm_vm_buffer);
1079 static void kvm_free_vmm_area(void)
1082 /*Zero this area before free to avoid bits leak!!*/
1083 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1084 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1091 static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1095 static int vti_init_vpd(struct kvm_vcpu *vcpu)
1098 union cpuid3_t cpuid3;
1099 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1102 return PTR_ERR(vpd);
1105 for (i = 0; i < 5; i++)
1106 vpd->vcpuid[i] = ia64_get_cpuid(i);
1108 /* Limit the CPUID number to 5 */
1109 cpuid3.value = vpd->vcpuid[3];
1110 cpuid3.number = 4; /* 5 - 1 */
1111 vpd->vcpuid[3] = cpuid3.value;
1113 /*Set vac and vdc fields*/
1114 vpd->vac.a_from_int_cr = 1;
1115 vpd->vac.a_to_int_cr = 1;
1116 vpd->vac.a_from_psr = 1;
1117 vpd->vac.a_from_cpuid = 1;
1118 vpd->vac.a_cover = 1;
1121 vpd->vdc.d_vmsw = 1;
1123 /*Set virtual buffer*/
1124 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1129 static int vti_create_vp(struct kvm_vcpu *vcpu)
1132 struct vpd *vpd = vcpu->arch.vpd;
1133 unsigned long vmm_ivt;
1135 vmm_ivt = kvm_vmm_info->vmm_ivt;
1137 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1139 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1142 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1148 static void init_ptce_info(struct kvm_vcpu *vcpu)
1150 ia64_ptce_info_t ptce = {0};
1152 ia64_get_ptce(&ptce);
1153 vcpu->arch.ptce_base = ptce.base;
1154 vcpu->arch.ptce_count[0] = ptce.count[0];
1155 vcpu->arch.ptce_count[1] = ptce.count[1];
1156 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1157 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1160 static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1162 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1164 if (hrtimer_cancel(p_ht))
1165 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
1168 static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1170 struct kvm_vcpu *vcpu;
1171 wait_queue_head_t *q;
1173 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
1176 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
1179 if (waitqueue_active(q))
1180 wake_up_interruptible(q);
1183 vcpu->arch.timer_fired = 1;
1184 vcpu->arch.timer_check = 1;
1185 return HRTIMER_NORESTART;
1188 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1190 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1196 struct kvm *kvm = vcpu->kvm;
1197 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1199 union context *p_ctx = &vcpu->arch.guest;
1200 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1202 /*Init vcpu context for first run.*/
1203 if (IS_ERR(vmm_vcpu))
1204 return PTR_ERR(vmm_vcpu);
1206 if (vcpu->vcpu_id == 0) {
1207 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
1209 /*Set entry address for first run.*/
1210 regs->cr_iip = PALE_RESET_ENTRY;
1212 /*Initialize itc offset for vcpus*/
1213 itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
1214 for (i = 0; i < kvm->arch.online_vcpus; i++) {
1215 v = (struct kvm_vcpu *)((char *)vcpu +
1216 sizeof(struct kvm_vcpu_data) * i);
1217 v->arch.itc_offset = itc_offset;
1218 v->arch.last_itc = 0;
1221 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
1224 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1225 if (!vcpu->arch.apic)
1227 vcpu->arch.apic->vcpu = vcpu;
1230 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
1231 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1232 p_ctx->psr = 0x1008522000UL;
1233 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1234 p_ctx->caller_unat = 0;
1236 p_ctx->ar[36] = 0x0; /*unat*/
1237 p_ctx->ar[19] = 0x0; /*rnat*/
1238 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1239 ((sizeof(struct kvm_vcpu)+15) & ~15);
1240 p_ctx->ar[64] = 0x0; /*pfs*/
1241 p_ctx->cr[0] = 0x7e04UL;
1242 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1243 p_ctx->cr[8] = 0x3c;
1245 /*Initilize region register*/
1246 p_ctx->rr[0] = 0x30;
1247 p_ctx->rr[1] = 0x30;
1248 p_ctx->rr[2] = 0x30;
1249 p_ctx->rr[3] = 0x30;
1250 p_ctx->rr[4] = 0x30;
1251 p_ctx->rr[5] = 0x30;
1252 p_ctx->rr[7] = 0x30;
1254 /*Initilize branch register 0*/
1255 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1257 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1258 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1259 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1261 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1262 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1264 vcpu->arch.last_run_cpu = -1;
1265 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
1266 vcpu->arch.vsa_base = kvm_vsa_base;
1267 vcpu->arch.__gp = kvm_vmm_gp;
1268 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
1269 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1270 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
1271 init_ptce_info(vcpu);
1278 static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1283 local_irq_save(psr);
1284 r = kvm_insert_vmm_mapping(vcpu);
1287 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1291 r = vti_init_vpd(vcpu);
1293 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1297 r = vti_create_vp(vcpu);
1301 kvm_purge_vmm_mapping(vcpu);
1302 local_irq_restore(psr);
1306 kvm_vcpu_uninit(vcpu);
1308 local_irq_restore(psr);
1312 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1315 struct kvm_vcpu *vcpu;
1316 unsigned long vm_base = kvm->arch.vm_base;
1320 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1323 if (id >= KVM_MAX_VCPUS) {
1324 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1331 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1334 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1335 vcpu_data[id].vcpu_struct));
1339 vti_vcpu_load(vcpu, cpu);
1340 r = vti_vcpu_setup(vcpu, id);
1344 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1348 kvm->arch.online_vcpus++;
1355 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1360 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1365 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1370 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
1371 struct kvm_guest_debug *dbg)
1376 static void free_kvm(struct kvm *kvm)
1378 unsigned long vm_base = kvm->arch.vm_base;
1381 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1382 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1387 static void kvm_release_vm_pages(struct kvm *kvm)
1389 struct kvm_memory_slot *memslot;
1391 unsigned long base_gfn;
1393 for (i = 0; i < kvm->nmemslots; i++) {
1394 memslot = &kvm->memslots[i];
1395 base_gfn = memslot->base_gfn;
1397 for (j = 0; j < memslot->npages; j++) {
1398 if (memslot->rmap[j])
1399 put_page((struct page *)memslot->rmap[j]);
1404 void kvm_arch_sync_events(struct kvm *kvm)
1408 void kvm_arch_destroy_vm(struct kvm *kvm)
1410 kvm_iommu_unmap_guest(kvm);
1411 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
1412 kvm_free_all_assigned_devices(kvm);
1414 kfree(kvm->arch.vioapic);
1415 kvm_release_vm_pages(kvm);
1416 kvm_free_physmem(kvm);
1420 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1424 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1426 if (cpu != vcpu->cpu) {
1428 if (vcpu->arch.ht_active)
1429 kvm_migrate_hlt_timer(vcpu);
1433 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1435 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1437 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1442 for (i = 0; i < 16; i++) {
1443 regs->vpd.vgr[i] = vpd->vgr[i];
1444 regs->vpd.vbgr[i] = vpd->vbgr[i];
1446 for (i = 0; i < 128; i++)
1447 regs->vpd.vcr[i] = vpd->vcr[i];
1448 regs->vpd.vhpi = vpd->vhpi;
1449 regs->vpd.vnat = vpd->vnat;
1450 regs->vpd.vbnat = vpd->vbnat;
1451 regs->vpd.vpsr = vpd->vpsr;
1452 regs->vpd.vpr = vpd->vpr;
1454 memcpy(®s->saved_guest, &vcpu->arch.guest, sizeof(union context));
1456 SAVE_REGS(mp_state);
1458 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1459 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1460 SAVE_REGS(itr_regions);
1461 SAVE_REGS(dtr_regions);
1462 SAVE_REGS(tc_regions);
1463 SAVE_REGS(irq_check);
1464 SAVE_REGS(itc_check);
1465 SAVE_REGS(timer_check);
1466 SAVE_REGS(timer_pending);
1467 SAVE_REGS(last_itc);
1468 for (i = 0; i < 8; i++) {
1469 regs->vrr[i] = vcpu->arch.vrr[i];
1470 regs->ibr[i] = vcpu->arch.ibr[i];
1471 regs->dbr[i] = vcpu->arch.dbr[i];
1473 for (i = 0; i < 4; i++)
1474 regs->insvc[i] = vcpu->arch.insvc[i];
1475 regs->saved_itc = vcpu->arch.itc_offset + ia64_getreg(_IA64_REG_AR_ITC);
1477 SAVE_REGS(metaphysical_rr0);
1478 SAVE_REGS(metaphysical_rr4);
1479 SAVE_REGS(metaphysical_saved_rr0);
1480 SAVE_REGS(metaphysical_saved_rr4);
1482 SAVE_REGS(saved_gp);
1488 int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
1489 struct kvm_ia64_vcpu_stack *stack)
1491 memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
1495 int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
1496 struct kvm_ia64_vcpu_stack *stack)
1498 memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
1499 sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
1501 vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
1505 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1508 hrtimer_cancel(&vcpu->arch.hlt_timer);
1509 kfree(vcpu->arch.apic);
1513 long kvm_arch_vcpu_ioctl(struct file *filp,
1514 unsigned int ioctl, unsigned long arg)
1516 struct kvm_vcpu *vcpu = filp->private_data;
1517 void __user *argp = (void __user *)arg;
1518 struct kvm_ia64_vcpu_stack *stack = NULL;
1522 case KVM_IA64_VCPU_GET_STACK: {
1523 struct kvm_ia64_vcpu_stack __user *user_stack;
1524 void __user *first_p = argp;
1527 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1530 if (!access_ok(VERIFY_WRITE, user_stack,
1531 sizeof(struct kvm_ia64_vcpu_stack))) {
1532 printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
1533 "Illegal user destination address for stack\n");
1536 stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1542 r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
1546 if (copy_to_user(user_stack, stack,
1547 sizeof(struct kvm_ia64_vcpu_stack)))
1552 case KVM_IA64_VCPU_SET_STACK: {
1553 struct kvm_ia64_vcpu_stack __user *user_stack;
1554 void __user *first_p = argp;
1557 if (copy_from_user(&user_stack, first_p, sizeof(void *)))
1560 if (!access_ok(VERIFY_READ, user_stack,
1561 sizeof(struct kvm_ia64_vcpu_stack))) {
1562 printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
1563 "Illegal user address for stack\n");
1566 stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
1571 if (copy_from_user(stack, user_stack,
1572 sizeof(struct kvm_ia64_vcpu_stack)))
1575 r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
1588 int kvm_arch_set_memory_region(struct kvm *kvm,
1589 struct kvm_userspace_memory_region *mem,
1590 struct kvm_memory_slot old,
1595 int npages = mem->memory_size >> PAGE_SHIFT;
1596 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1597 unsigned long base_gfn = memslot->base_gfn;
1599 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1602 for (i = 0; i < npages; i++) {
1603 pfn = gfn_to_pfn(kvm, base_gfn + i);
1604 if (!kvm_is_mmio_pfn(pfn)) {
1605 kvm_set_pmt_entry(kvm, base_gfn + i,
1607 _PAGE_AR_RWX | _PAGE_MA_WB);
1608 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1610 kvm_set_pmt_entry(kvm, base_gfn + i,
1611 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1613 memslot->rmap[i] = 0;
1620 void kvm_arch_flush_shadow(struct kvm *kvm)
1624 long kvm_arch_dev_ioctl(struct file *filp,
1625 unsigned int ioctl, unsigned long arg)
1630 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1632 kvm_vcpu_uninit(vcpu);
1635 static int vti_cpu_has_kvm_support(void)
1637 long avail = 1, status = 1, control = 1;
1640 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1644 if (!(avail & PAL_PROC_VM_BIT))
1647 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1649 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1652 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1654 if (!(vp_env_info & VP_OPCODE)) {
1655 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1656 "vm_env_info:0x%lx\n", vp_env_info);
1664 static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
1665 struct module *module)
1667 unsigned long module_base;
1668 unsigned long vmm_size;
1670 unsigned long vmm_offset, func_offset, fdesc_offset;
1671 struct fdesc *p_fdesc;
1675 if (!kvm_vmm_base) {
1676 printk("kvm: kvm area hasn't been initilized yet!!\n");
1680 /*Calculate new position of relocated vmm module.*/
1681 module_base = (unsigned long)module->module_core;
1682 vmm_size = module->core_size;
1683 if (unlikely(vmm_size > KVM_VMM_SIZE))
1686 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
1687 kvm_flush_icache(kvm_vmm_base, vmm_size);
1689 /*Recalculate kvm_vmm_info based on new VMM*/
1690 vmm_offset = vmm_info->vmm_ivt - module_base;
1691 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1692 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1693 kvm_vmm_info->vmm_ivt);
1695 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1696 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1698 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1699 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1700 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1701 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1703 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1704 KVM_VMM_BASE+func_offset);
1706 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1707 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1709 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1710 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1711 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1712 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1714 kvm_vmm_gp = p_fdesc->gp;
1716 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1717 kvm_vmm_info->vmm_entry);
1718 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1719 KVM_VMM_BASE + func_offset);
1724 int kvm_arch_init(void *opaque)
1727 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1729 if (!vti_cpu_has_kvm_support()) {
1730 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1736 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1742 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1746 if (kvm_alloc_vmm_area())
1749 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1756 kvm_free_vmm_area();
1758 kfree(kvm_vmm_info);
1763 void kvm_arch_exit(void)
1765 kvm_free_vmm_area();
1766 kfree(kvm_vmm_info);
1767 kvm_vmm_info = NULL;
1770 static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1771 struct kvm_dirty_log *log)
1773 struct kvm_memory_slot *memslot;
1776 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1777 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
1780 if (log->slot >= KVM_MEMORY_SLOTS)
1783 memslot = &kvm->memslots[log->slot];
1785 if (!memslot->dirty_bitmap)
1788 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1789 base = memslot->base_gfn / BITS_PER_LONG;
1791 for (i = 0; i < n/sizeof(long); ++i) {
1792 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1793 dirty_bitmap[base + i] = 0;
1800 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1801 struct kvm_dirty_log *log)
1805 struct kvm_memory_slot *memslot;
1808 spin_lock(&kvm->arch.dirty_log_lock);
1810 r = kvm_ia64_sync_dirty_log(kvm, log);
1814 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1818 /* If nothing is dirty, don't bother messing with page tables. */
1820 kvm_flush_remote_tlbs(kvm);
1821 memslot = &kvm->memslots[log->slot];
1822 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1823 memset(memslot->dirty_bitmap, 0, n);
1827 spin_unlock(&kvm->arch.dirty_log_lock);
1831 int kvm_arch_hardware_setup(void)
1836 void kvm_arch_hardware_unsetup(void)
1840 static void vcpu_kick_intr(void *info)
1843 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
1844 printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu);
1848 void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1850 int ipi_pcpu = vcpu->cpu;
1851 int cpu = get_cpu();
1853 if (waitqueue_active(&vcpu->wq))
1854 wake_up_interruptible(&vcpu->wq);
1856 if (vcpu->guest_mode && cpu != ipi_pcpu)
1857 smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
1861 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
1863 return __apic_accept_irq(vcpu, irq->vector);
1866 int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1868 return apic->vcpu->vcpu_id == dest;
1871 int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1876 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2)
1878 return vcpu1->arch.xtp - vcpu2->arch.xtp;
1881 int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
1882 int short_hand, int dest, int dest_mode)
1884 struct kvm_lapic *target = vcpu->arch.apic;
1885 return (dest_mode == 0) ?
1886 kvm_apic_match_physical_addr(target, dest) :
1887 kvm_apic_match_logical_addr(target, dest);
1890 static int find_highest_bits(int *dat)
1895 /* loop for all 256 bits */
1896 for (i = 7; i >= 0 ; i--) {
1900 return i * 32 + bitnum - 1;
1907 int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1909 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1911 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1913 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1914 return ExtINT_VECTOR;
1916 return find_highest_bits((int *)&vpd->irr[0]);
1919 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
1921 if (kvm_highest_pending_irq(vcpu) != -1)
1926 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1928 return vcpu->arch.timer_fired;
1931 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1936 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1938 return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE;
1941 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1942 struct kvm_mp_state *mp_state)
1945 mp_state->mp_state = vcpu->arch.mp_state;
1950 static int vcpu_reset(struct kvm_vcpu *vcpu)
1954 local_irq_save(psr);
1955 r = kvm_insert_vmm_mapping(vcpu);
1959 vcpu->arch.launched = 0;
1960 kvm_arch_vcpu_uninit(vcpu);
1961 r = kvm_arch_vcpu_init(vcpu);
1965 kvm_purge_vmm_mapping(vcpu);
1968 local_irq_restore(psr);
1972 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1973 struct kvm_mp_state *mp_state)
1978 vcpu->arch.mp_state = mp_state->mp_state;
1979 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1980 r = vcpu_reset(vcpu);