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/intel-iommu.h>
36 #include <asm/pgtable.h>
37 #include <asm/gcc_intrin.h>
39 #include <asm/cacheflush.h>
40 #include <asm/div64.h>
51 static unsigned long kvm_vmm_base;
52 static unsigned long kvm_vsa_base;
53 static unsigned long kvm_vm_buffer;
54 static unsigned long kvm_vm_buffer_size;
55 unsigned long kvm_vmm_gp;
57 static long vp_env_info;
59 static struct kvm_vmm_info *kvm_vmm_info;
61 static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
63 struct kvm_stats_debugfs_item debugfs_entries[] = {
67 static void kvm_flush_icache(unsigned long start, unsigned long len)
71 for (l = 0; l < (len + 32); l += 32)
78 static void kvm_flush_tlb_all(void)
80 unsigned long i, j, count0, count1, stride0, stride1, addr;
83 addr = local_cpu_data->ptce_base;
84 count0 = local_cpu_data->ptce_count[0];
85 count1 = local_cpu_data->ptce_count[1];
86 stride0 = local_cpu_data->ptce_stride[0];
87 stride1 = local_cpu_data->ptce_stride[1];
89 local_irq_save(flags);
90 for (i = 0; i < count0; ++i) {
91 for (j = 0; j < count1; ++j) {
97 local_irq_restore(flags);
98 ia64_srlz_i(); /* srlz.i implies srlz.d */
101 long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
103 struct ia64_pal_retval iprv;
105 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
111 static DEFINE_SPINLOCK(vp_lock);
113 void kvm_arch_hardware_enable(void *garbage)
118 unsigned long saved_psr;
121 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
123 local_irq_save(saved_psr);
124 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
125 local_irq_restore(saved_psr);
130 status = ia64_pal_vp_init_env(kvm_vsa_base ?
131 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
132 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
134 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
139 kvm_vsa_base = tmp_base;
140 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
142 spin_unlock(&vp_lock);
143 ia64_ptr_entry(0x3, slot);
146 void kvm_arch_hardware_disable(void *garbage)
152 unsigned long saved_psr;
153 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
155 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
158 local_irq_save(saved_psr);
159 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
160 local_irq_restore(saved_psr);
164 status = ia64_pal_vp_exit_env(host_iva);
166 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
168 ia64_ptr_entry(0x3, slot);
171 void kvm_arch_check_processor_compat(void *rtn)
176 int kvm_dev_ioctl_check_extension(long ext)
182 case KVM_CAP_IRQCHIP:
183 case KVM_CAP_USER_MEMORY:
184 case KVM_CAP_MP_STATE:
188 case KVM_CAP_COALESCED_MMIO:
189 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
192 r = intel_iommu_found();
201 static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
202 gpa_t addr, int len, int is_write)
204 struct kvm_io_device *dev;
206 dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
211 static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
213 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
214 kvm_run->hw.hardware_exit_reason = 1;
218 static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
220 struct kvm_mmio_req *p;
221 struct kvm_io_device *mmio_dev;
223 p = kvm_get_vcpu_ioreq(vcpu);
225 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
227 vcpu->mmio_needed = 1;
228 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
229 vcpu->mmio_size = kvm_run->mmio.len = p->size;
230 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
232 if (vcpu->mmio_is_write)
233 memcpy(vcpu->mmio_data, &p->data, p->size);
234 memcpy(kvm_run->mmio.data, &p->data, p->size);
235 kvm_run->exit_reason = KVM_EXIT_MMIO;
238 mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
241 kvm_iodevice_write(mmio_dev, p->addr, p->size,
244 kvm_iodevice_read(mmio_dev, p->addr, p->size,
248 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
249 p->state = STATE_IORESP_READY;
254 static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
256 struct exit_ctl_data *p;
258 p = kvm_get_exit_data(vcpu);
260 if (p->exit_reason == EXIT_REASON_PAL_CALL)
261 return kvm_pal_emul(vcpu, kvm_run);
263 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
264 kvm_run->hw.hardware_exit_reason = 2;
269 static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
271 struct exit_ctl_data *p;
273 p = kvm_get_exit_data(vcpu);
275 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
279 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
280 kvm_run->hw.hardware_exit_reason = 3;
287 * offset: address offset to IPI space.
288 * value: deliver value.
290 static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
295 kvm_apic_set_irq(vcpu, vector, 0);
298 kvm_apic_set_irq(vcpu, 2, 0);
301 kvm_apic_set_irq(vcpu, 0, 0);
306 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
311 static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
317 for (i = 0; i < KVM_MAX_VCPUS; i++) {
319 lid.val = VCPU_LID(kvm->vcpus[i]);
320 if (lid.id == id && lid.eid == eid)
321 return kvm->vcpus[i];
328 static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
330 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
331 struct kvm_vcpu *target_vcpu;
332 struct kvm_pt_regs *regs;
333 union ia64_ipi_a addr = p->u.ipi_data.addr;
334 union ia64_ipi_d data = p->u.ipi_data.data;
336 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
338 return handle_vm_error(vcpu, kvm_run);
340 if (!target_vcpu->arch.launched) {
341 regs = vcpu_regs(target_vcpu);
343 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
344 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
346 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
347 if (waitqueue_active(&target_vcpu->wq))
348 wake_up_interruptible(&target_vcpu->wq);
350 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
351 if (target_vcpu != vcpu)
352 kvm_vcpu_kick(target_vcpu);
359 struct kvm_ptc_g ptc_g_data;
360 struct kvm_vcpu *vcpu;
363 static void vcpu_global_purge(void *info)
365 struct call_data *p = (struct call_data *)info;
366 struct kvm_vcpu *vcpu = p->vcpu;
368 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
371 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
372 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
373 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
376 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
377 vcpu->arch.ptc_g_count = 0;
378 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
382 static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
384 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
385 struct kvm *kvm = vcpu->kvm;
386 struct call_data call_data;
389 call_data.ptc_g_data = p->u.ptc_g_data;
391 for (i = 0; i < KVM_MAX_VCPUS; i++) {
392 if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
393 KVM_MP_STATE_UNINITIALIZED ||
394 vcpu == kvm->vcpus[i])
397 if (waitqueue_active(&kvm->vcpus[i]->wq))
398 wake_up_interruptible(&kvm->vcpus[i]->wq);
400 if (kvm->vcpus[i]->cpu != -1) {
401 call_data.vcpu = kvm->vcpus[i];
402 smp_call_function_single(kvm->vcpus[i]->cpu,
403 vcpu_global_purge, &call_data, 1);
405 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
411 static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
416 int kvm_emulate_halt(struct kvm_vcpu *vcpu)
421 unsigned long vcpu_now_itc;
422 unsigned long expires;
423 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
424 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
425 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
427 if (irqchip_in_kernel(vcpu->kvm)) {
429 vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
431 if (time_after(vcpu_now_itc, vpd->itm)) {
432 vcpu->arch.timer_check = 1;
435 itc_diff = vpd->itm - vcpu_now_itc;
437 itc_diff = -itc_diff;
439 expires = div64_u64(itc_diff, cyc_per_usec);
440 kt = ktime_set(0, 1000 * expires);
442 down_read(&vcpu->kvm->slots_lock);
443 vcpu->arch.ht_active = 1;
444 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
446 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
447 kvm_vcpu_block(vcpu);
448 hrtimer_cancel(p_ht);
449 vcpu->arch.ht_active = 0;
451 if (test_and_clear_bit(KVM_REQ_UNHALT, &vcpu->requests))
452 if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED)
453 vcpu->arch.mp_state =
454 KVM_MP_STATE_RUNNABLE;
455 up_read(&vcpu->kvm->slots_lock);
457 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
461 printk(KERN_ERR"kvm: Unsupported userspace halt!");
466 static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
467 struct kvm_run *kvm_run)
469 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
473 static int handle_external_interrupt(struct kvm_vcpu *vcpu,
474 struct kvm_run *kvm_run)
479 static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
480 struct kvm_run *kvm_run) = {
481 [EXIT_REASON_VM_PANIC] = handle_vm_error,
482 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
483 [EXIT_REASON_PAL_CALL] = handle_pal_call,
484 [EXIT_REASON_SAL_CALL] = handle_sal_call,
485 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
486 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
487 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
488 [EXIT_REASON_IPI] = handle_ipi,
489 [EXIT_REASON_PTC_G] = handle_global_purge,
493 static const int kvm_vti_max_exit_handlers =
494 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
496 static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
498 struct exit_ctl_data *p_exit_data;
500 p_exit_data = kvm_get_exit_data(vcpu);
501 return p_exit_data->exit_reason;
505 * The guest has exited. See if we can fix it or if we need userspace
508 static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
510 u32 exit_reason = kvm_get_exit_reason(vcpu);
511 vcpu->arch.last_exit = exit_reason;
513 if (exit_reason < kvm_vti_max_exit_handlers
514 && kvm_vti_exit_handlers[exit_reason])
515 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
517 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
518 kvm_run->hw.hardware_exit_reason = exit_reason;
523 static inline void vti_set_rr6(unsigned long rr6)
525 ia64_set_rr(RR6, rr6);
529 static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
532 struct kvm *kvm = vcpu->kvm;
535 /*Insert a pair of tr to map vmm*/
536 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
537 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
540 vcpu->arch.vmm_tr_slot = r;
541 /*Insert a pairt of tr to map data of vm*/
542 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
543 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
544 pte, KVM_VM_DATA_SHIFT);
547 vcpu->arch.vm_tr_slot = r;
554 static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
557 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
558 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
562 static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
564 int cpu = smp_processor_id();
566 if (vcpu->arch.last_run_cpu != cpu ||
567 per_cpu(last_vcpu, cpu) != vcpu) {
568 per_cpu(last_vcpu, cpu) = vcpu;
569 vcpu->arch.last_run_cpu = cpu;
573 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
574 vti_set_rr6(vcpu->arch.vmm_rr);
575 return kvm_insert_vmm_mapping(vcpu);
577 static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
579 kvm_purge_vmm_mapping(vcpu);
580 vti_set_rr6(vcpu->arch.host_rr6);
583 static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
585 union context *host_ctx, *guest_ctx;
588 /*Get host and guest context with guest address space.*/
589 host_ctx = kvm_get_host_context(vcpu);
590 guest_ctx = kvm_get_guest_context(vcpu);
592 r = kvm_vcpu_pre_transition(vcpu);
595 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
596 kvm_vcpu_post_transition(vcpu);
602 static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
610 if (signal_pending(current)) {
614 kvm_run->exit_reason = KVM_EXIT_INTR;
618 vcpu->guest_mode = 1;
620 down_read(&vcpu->kvm->slots_lock);
621 r = vti_vcpu_run(vcpu, kvm_run);
625 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
629 vcpu->arch.launched = 1;
630 vcpu->guest_mode = 0;
634 * We must have an instruction between local_irq_enable() and
635 * kvm_guest_exit(), so the timer interrupt isn't delayed by
636 * the interrupt shadow. The stat.exits increment will do nicely.
637 * But we need to prevent reordering, hence this barrier():
641 up_read(&vcpu->kvm->slots_lock);
644 r = kvm_handle_exit(kvm_run, vcpu);
660 static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
662 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
664 if (!vcpu->mmio_is_write)
665 memcpy(&p->data, vcpu->mmio_data, 8);
666 p->state = STATE_IORESP_READY;
669 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
676 if (vcpu->sigset_active)
677 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
679 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
680 kvm_vcpu_block(vcpu);
681 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
686 if (vcpu->mmio_needed) {
687 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
688 kvm_set_mmio_data(vcpu);
689 vcpu->mmio_read_completed = 1;
690 vcpu->mmio_needed = 0;
692 r = __vcpu_run(vcpu, kvm_run);
694 if (vcpu->sigset_active)
695 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
701 static struct kvm *kvm_alloc_kvm(void)
707 BUG_ON(sizeof(struct kvm) > KVM_VM_STRUCT_SIZE);
709 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
712 return ERR_PTR(-ENOMEM);
714 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
715 kvm = (struct kvm *)(vm_base +
716 offsetof(struct kvm_vm_data, kvm_vm_struct));
717 kvm->arch.vm_base = vm_base;
718 printk(KERN_DEBUG"kvm: vm's data area:0x%lx\n", vm_base);
723 struct kvm_io_range {
729 static const struct kvm_io_range io_ranges[] = {
730 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
731 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
732 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
733 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
734 {PIB_START, PIB_SIZE, GPFN_PIB},
737 static void kvm_build_io_pmt(struct kvm *kvm)
741 /* Mark I/O ranges */
742 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
744 for (j = io_ranges[i].start;
745 j < io_ranges[i].start + io_ranges[i].size;
747 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
748 io_ranges[i].type, 0);
753 /*Use unused rids to virtualize guest rid.*/
754 #define GUEST_PHYSICAL_RR0 0x1739
755 #define GUEST_PHYSICAL_RR4 0x2739
756 #define VMM_INIT_RR 0x1660
758 static void kvm_init_vm(struct kvm *kvm)
762 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
763 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
764 kvm->arch.vmm_init_rr = VMM_INIT_RR;
767 *Fill P2M entries for MMIO/IO ranges
769 kvm_build_io_pmt(kvm);
771 INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
773 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
774 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
777 struct kvm *kvm_arch_create_vm(void)
779 struct kvm *kvm = kvm_alloc_kvm();
782 return ERR_PTR(-ENOMEM);
789 static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm,
790 struct kvm_irqchip *chip)
795 switch (chip->chip_id) {
796 case KVM_IRQCHIP_IOAPIC:
797 memcpy(&chip->chip.ioapic, ioapic_irqchip(kvm),
798 sizeof(struct kvm_ioapic_state));
807 static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
812 switch (chip->chip_id) {
813 case KVM_IRQCHIP_IOAPIC:
814 memcpy(ioapic_irqchip(kvm),
816 sizeof(struct kvm_ioapic_state));
825 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
827 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
830 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
835 for (i = 0; i < 16; i++) {
836 vpd->vgr[i] = regs->vpd.vgr[i];
837 vpd->vbgr[i] = regs->vpd.vbgr[i];
839 for (i = 0; i < 128; i++)
840 vpd->vcr[i] = regs->vpd.vcr[i];
841 vpd->vhpi = regs->vpd.vhpi;
842 vpd->vnat = regs->vpd.vnat;
843 vpd->vbnat = regs->vpd.vbnat;
844 vpd->vpsr = regs->vpd.vpsr;
846 vpd->vpr = regs->vpd.vpr;
849 r = copy_from_user(&vcpu->arch.guest, regs->saved_guest,
850 sizeof(union context));
853 r = copy_from_user(vcpu + 1, regs->saved_stack +
854 sizeof(struct kvm_vcpu),
855 KVM_STK_OFFSET - sizeof(struct kvm_vcpu));
858 vcpu->arch.exit_data =
859 ((struct kvm_vcpu *)(regs->saved_stack))->arch.exit_data;
861 RESTORE_REGS(mp_state);
862 RESTORE_REGS(vmm_rr);
863 memcpy(vcpu->arch.itrs, regs->itrs, sizeof(struct thash_data) * NITRS);
864 memcpy(vcpu->arch.dtrs, regs->dtrs, sizeof(struct thash_data) * NDTRS);
865 RESTORE_REGS(itr_regions);
866 RESTORE_REGS(dtr_regions);
867 RESTORE_REGS(tc_regions);
868 RESTORE_REGS(irq_check);
869 RESTORE_REGS(itc_check);
870 RESTORE_REGS(timer_check);
871 RESTORE_REGS(timer_pending);
872 RESTORE_REGS(last_itc);
873 for (i = 0; i < 8; i++) {
874 vcpu->arch.vrr[i] = regs->vrr[i];
875 vcpu->arch.ibr[i] = regs->ibr[i];
876 vcpu->arch.dbr[i] = regs->dbr[i];
878 for (i = 0; i < 4; i++)
879 vcpu->arch.insvc[i] = regs->insvc[i];
881 RESTORE_REGS(metaphysical_rr0);
882 RESTORE_REGS(metaphysical_rr4);
883 RESTORE_REGS(metaphysical_saved_rr0);
884 RESTORE_REGS(metaphysical_saved_rr4);
885 RESTORE_REGS(fp_psr);
886 RESTORE_REGS(saved_gp);
888 vcpu->arch.irq_new_pending = 1;
889 vcpu->arch.itc_offset = regs->saved_itc - ia64_getreg(_IA64_REG_AR_ITC);
890 set_bit(KVM_REQ_RESUME, &vcpu->requests);
898 long kvm_arch_vm_ioctl(struct file *filp,
899 unsigned int ioctl, unsigned long arg)
901 struct kvm *kvm = filp->private_data;
902 void __user *argp = (void __user *)arg;
906 case KVM_SET_MEMORY_REGION: {
907 struct kvm_memory_region kvm_mem;
908 struct kvm_userspace_memory_region kvm_userspace_mem;
911 if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
913 kvm_userspace_mem.slot = kvm_mem.slot;
914 kvm_userspace_mem.flags = kvm_mem.flags;
915 kvm_userspace_mem.guest_phys_addr =
916 kvm_mem.guest_phys_addr;
917 kvm_userspace_mem.memory_size = kvm_mem.memory_size;
918 r = kvm_vm_ioctl_set_memory_region(kvm,
919 &kvm_userspace_mem, 0);
924 case KVM_CREATE_IRQCHIP:
926 r = kvm_ioapic_init(kvm);
931 struct kvm_irq_level irq_event;
934 if (copy_from_user(&irq_event, argp, sizeof irq_event))
936 if (irqchip_in_kernel(kvm)) {
937 mutex_lock(&kvm->lock);
938 kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
939 irq_event.irq, irq_event.level);
940 mutex_unlock(&kvm->lock);
945 case KVM_GET_IRQCHIP: {
946 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
947 struct kvm_irqchip chip;
950 if (copy_from_user(&chip, argp, sizeof chip))
953 if (!irqchip_in_kernel(kvm))
955 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
959 if (copy_to_user(argp, &chip, sizeof chip))
964 case KVM_SET_IRQCHIP: {
965 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
966 struct kvm_irqchip chip;
969 if (copy_from_user(&chip, argp, sizeof chip))
972 if (!irqchip_in_kernel(kvm))
974 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
987 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
988 struct kvm_sregs *sregs)
993 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
994 struct kvm_sregs *sregs)
999 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1000 struct kvm_translation *tr)
1006 static int kvm_alloc_vmm_area(void)
1008 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1009 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1010 get_order(KVM_VMM_SIZE));
1014 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1015 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1017 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1018 kvm_vmm_base, kvm_vm_buffer);
1024 static void kvm_free_vmm_area(void)
1027 /*Zero this area before free to avoid bits leak!!*/
1028 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1029 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1036 static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1040 static int vti_init_vpd(struct kvm_vcpu *vcpu)
1043 union cpuid3_t cpuid3;
1044 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1047 return PTR_ERR(vpd);
1050 for (i = 0; i < 5; i++)
1051 vpd->vcpuid[i] = ia64_get_cpuid(i);
1053 /* Limit the CPUID number to 5 */
1054 cpuid3.value = vpd->vcpuid[3];
1055 cpuid3.number = 4; /* 5 - 1 */
1056 vpd->vcpuid[3] = cpuid3.value;
1058 /*Set vac and vdc fields*/
1059 vpd->vac.a_from_int_cr = 1;
1060 vpd->vac.a_to_int_cr = 1;
1061 vpd->vac.a_from_psr = 1;
1062 vpd->vac.a_from_cpuid = 1;
1063 vpd->vac.a_cover = 1;
1066 vpd->vdc.d_vmsw = 1;
1068 /*Set virtual buffer*/
1069 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1074 static int vti_create_vp(struct kvm_vcpu *vcpu)
1077 struct vpd *vpd = vcpu->arch.vpd;
1078 unsigned long vmm_ivt;
1080 vmm_ivt = kvm_vmm_info->vmm_ivt;
1082 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1084 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1087 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1093 static void init_ptce_info(struct kvm_vcpu *vcpu)
1095 ia64_ptce_info_t ptce = {0};
1097 ia64_get_ptce(&ptce);
1098 vcpu->arch.ptce_base = ptce.base;
1099 vcpu->arch.ptce_count[0] = ptce.count[0];
1100 vcpu->arch.ptce_count[1] = ptce.count[1];
1101 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1102 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1105 static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1107 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1109 if (hrtimer_cancel(p_ht))
1110 hrtimer_start_expires(p_ht, HRTIMER_MODE_ABS);
1113 static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1115 struct kvm_vcpu *vcpu;
1116 wait_queue_head_t *q;
1118 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
1121 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
1124 if (waitqueue_active(q))
1125 wake_up_interruptible(q);
1128 vcpu->arch.timer_fired = 1;
1129 vcpu->arch.timer_check = 1;
1130 return HRTIMER_NORESTART;
1133 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1135 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
1141 struct kvm *kvm = vcpu->kvm;
1142 struct kvm_pt_regs *regs = vcpu_regs(vcpu);
1144 union context *p_ctx = &vcpu->arch.guest;
1145 struct kvm_vcpu *vmm_vcpu = to_guest(vcpu->kvm, vcpu);
1147 /*Init vcpu context for first run.*/
1148 if (IS_ERR(vmm_vcpu))
1149 return PTR_ERR(vmm_vcpu);
1151 if (vcpu->vcpu_id == 0) {
1152 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
1154 /*Set entry address for first run.*/
1155 regs->cr_iip = PALE_RESET_ENTRY;
1157 /*Initialize itc offset for vcpus*/
1158 itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
1159 for (i = 0; i < KVM_MAX_VCPUS; i++) {
1160 v = (struct kvm_vcpu *)((char *)vcpu +
1161 sizeof(struct kvm_vcpu_data) * i);
1162 v->arch.itc_offset = itc_offset;
1163 v->arch.last_itc = 0;
1166 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
1169 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1170 if (!vcpu->arch.apic)
1172 vcpu->arch.apic->vcpu = vcpu;
1175 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + KVM_STK_OFFSET);
1176 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1177 p_ctx->psr = 0x1008522000UL;
1178 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1179 p_ctx->caller_unat = 0;
1181 p_ctx->ar[36] = 0x0; /*unat*/
1182 p_ctx->ar[19] = 0x0; /*rnat*/
1183 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1184 ((sizeof(struct kvm_vcpu)+15) & ~15);
1185 p_ctx->ar[64] = 0x0; /*pfs*/
1186 p_ctx->cr[0] = 0x7e04UL;
1187 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1188 p_ctx->cr[8] = 0x3c;
1190 /*Initilize region register*/
1191 p_ctx->rr[0] = 0x30;
1192 p_ctx->rr[1] = 0x30;
1193 p_ctx->rr[2] = 0x30;
1194 p_ctx->rr[3] = 0x30;
1195 p_ctx->rr[4] = 0x30;
1196 p_ctx->rr[5] = 0x30;
1197 p_ctx->rr[7] = 0x30;
1199 /*Initilize branch register 0*/
1200 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1202 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1203 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1204 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1206 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1207 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1209 vcpu->arch.last_run_cpu = -1;
1210 vcpu->arch.vpd = (struct vpd *)VPD_BASE(vcpu->vcpu_id);
1211 vcpu->arch.vsa_base = kvm_vsa_base;
1212 vcpu->arch.__gp = kvm_vmm_gp;
1213 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
1214 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_BASE(vcpu->vcpu_id);
1215 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_BASE(vcpu->vcpu_id);
1216 init_ptce_info(vcpu);
1223 static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1228 local_irq_save(psr);
1229 r = kvm_insert_vmm_mapping(vcpu);
1232 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1236 r = vti_init_vpd(vcpu);
1238 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1242 r = vti_create_vp(vcpu);
1246 kvm_purge_vmm_mapping(vcpu);
1247 local_irq_restore(psr);
1251 kvm_vcpu_uninit(vcpu);
1253 local_irq_restore(psr);
1257 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1260 struct kvm_vcpu *vcpu;
1261 unsigned long vm_base = kvm->arch.vm_base;
1265 BUG_ON(sizeof(struct kvm_vcpu) > VCPU_STRUCT_SIZE/2);
1268 if (id >= KVM_MAX_VCPUS) {
1269 printk(KERN_ERR"kvm: Can't configure vcpus > %ld",
1276 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1279 vcpu = (struct kvm_vcpu *)(vm_base + offsetof(struct kvm_vm_data,
1280 vcpu_data[id].vcpu_struct));
1284 vti_vcpu_load(vcpu, cpu);
1285 r = vti_vcpu_setup(vcpu, id);
1289 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1298 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1303 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1308 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1313 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
1314 struct kvm_debug_guest *dbg)
1319 static void free_kvm(struct kvm *kvm)
1321 unsigned long vm_base = kvm->arch.vm_base;
1324 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1325 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1330 static void kvm_release_vm_pages(struct kvm *kvm)
1332 struct kvm_memory_slot *memslot;
1334 unsigned long base_gfn;
1336 for (i = 0; i < kvm->nmemslots; i++) {
1337 memslot = &kvm->memslots[i];
1338 base_gfn = memslot->base_gfn;
1340 for (j = 0; j < memslot->npages; j++) {
1341 if (memslot->rmap[j])
1342 put_page((struct page *)memslot->rmap[j]);
1347 void kvm_arch_destroy_vm(struct kvm *kvm)
1349 kvm_iommu_unmap_guest(kvm);
1350 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
1351 kvm_free_all_assigned_devices(kvm);
1353 kfree(kvm->arch.vioapic);
1354 kvm_release_vm_pages(kvm);
1355 kvm_free_physmem(kvm);
1359 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1363 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1365 if (cpu != vcpu->cpu) {
1367 if (vcpu->arch.ht_active)
1368 kvm_migrate_hlt_timer(vcpu);
1372 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1374 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1378 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1381 for (i = 0; i < 16; i++) {
1382 regs->vpd.vgr[i] = vpd->vgr[i];
1383 regs->vpd.vbgr[i] = vpd->vbgr[i];
1385 for (i = 0; i < 128; i++)
1386 regs->vpd.vcr[i] = vpd->vcr[i];
1387 regs->vpd.vhpi = vpd->vhpi;
1388 regs->vpd.vnat = vpd->vnat;
1389 regs->vpd.vbnat = vpd->vbnat;
1390 regs->vpd.vpsr = vpd->vpsr;
1391 regs->vpd.vpr = vpd->vpr;
1394 r = copy_to_user(regs->saved_guest, &vcpu->arch.guest,
1395 sizeof(union context));
1398 r = copy_to_user(regs->saved_stack, (void *)vcpu, KVM_STK_OFFSET);
1401 SAVE_REGS(mp_state);
1403 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1404 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1405 SAVE_REGS(itr_regions);
1406 SAVE_REGS(dtr_regions);
1407 SAVE_REGS(tc_regions);
1408 SAVE_REGS(irq_check);
1409 SAVE_REGS(itc_check);
1410 SAVE_REGS(timer_check);
1411 SAVE_REGS(timer_pending);
1412 SAVE_REGS(last_itc);
1413 for (i = 0; i < 8; i++) {
1414 regs->vrr[i] = vcpu->arch.vrr[i];
1415 regs->ibr[i] = vcpu->arch.ibr[i];
1416 regs->dbr[i] = vcpu->arch.dbr[i];
1418 for (i = 0; i < 4; i++)
1419 regs->insvc[i] = vcpu->arch.insvc[i];
1420 regs->saved_itc = vcpu->arch.itc_offset + ia64_getreg(_IA64_REG_AR_ITC);
1422 SAVE_REGS(metaphysical_rr0);
1423 SAVE_REGS(metaphysical_rr4);
1424 SAVE_REGS(metaphysical_saved_rr0);
1425 SAVE_REGS(metaphysical_saved_rr4);
1427 SAVE_REGS(saved_gp);
1434 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1437 hrtimer_cancel(&vcpu->arch.hlt_timer);
1438 kfree(vcpu->arch.apic);
1442 long kvm_arch_vcpu_ioctl(struct file *filp,
1443 unsigned int ioctl, unsigned long arg)
1448 int kvm_arch_set_memory_region(struct kvm *kvm,
1449 struct kvm_userspace_memory_region *mem,
1450 struct kvm_memory_slot old,
1455 int npages = mem->memory_size >> PAGE_SHIFT;
1456 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1457 unsigned long base_gfn = memslot->base_gfn;
1459 if (base_gfn + npages > (KVM_MAX_MEM_SIZE >> PAGE_SHIFT))
1462 for (i = 0; i < npages; i++) {
1463 pfn = gfn_to_pfn(kvm, base_gfn + i);
1464 if (!kvm_is_mmio_pfn(pfn)) {
1465 kvm_set_pmt_entry(kvm, base_gfn + i,
1467 _PAGE_AR_RWX | _PAGE_MA_WB);
1468 memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
1470 kvm_set_pmt_entry(kvm, base_gfn + i,
1471 GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
1473 memslot->rmap[i] = 0;
1480 void kvm_arch_flush_shadow(struct kvm *kvm)
1484 long kvm_arch_dev_ioctl(struct file *filp,
1485 unsigned int ioctl, unsigned long arg)
1490 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1492 kvm_vcpu_uninit(vcpu);
1495 static int vti_cpu_has_kvm_support(void)
1497 long avail = 1, status = 1, control = 1;
1500 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1504 if (!(avail & PAL_PROC_VM_BIT))
1507 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1509 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1512 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1514 if (!(vp_env_info & VP_OPCODE)) {
1515 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1516 "vm_env_info:0x%lx\n", vp_env_info);
1524 static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
1525 struct module *module)
1527 unsigned long module_base;
1528 unsigned long vmm_size;
1530 unsigned long vmm_offset, func_offset, fdesc_offset;
1531 struct fdesc *p_fdesc;
1535 if (!kvm_vmm_base) {
1536 printk("kvm: kvm area hasn't been initilized yet!!\n");
1540 /*Calculate new position of relocated vmm module.*/
1541 module_base = (unsigned long)module->module_core;
1542 vmm_size = module->core_size;
1543 if (unlikely(vmm_size > KVM_VMM_SIZE))
1546 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
1547 kvm_flush_icache(kvm_vmm_base, vmm_size);
1549 /*Recalculate kvm_vmm_info based on new VMM*/
1550 vmm_offset = vmm_info->vmm_ivt - module_base;
1551 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1552 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1553 kvm_vmm_info->vmm_ivt);
1555 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1556 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1558 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1559 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1560 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1561 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1563 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1564 KVM_VMM_BASE+func_offset);
1566 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1567 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1569 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1570 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1571 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1572 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1574 kvm_vmm_gp = p_fdesc->gp;
1576 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1577 kvm_vmm_info->vmm_entry);
1578 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1579 KVM_VMM_BASE + func_offset);
1584 int kvm_arch_init(void *opaque)
1587 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1589 if (!vti_cpu_has_kvm_support()) {
1590 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1596 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1602 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1606 if (kvm_alloc_vmm_area())
1609 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1616 kvm_free_vmm_area();
1618 kfree(kvm_vmm_info);
1623 void kvm_arch_exit(void)
1625 kvm_free_vmm_area();
1626 kfree(kvm_vmm_info);
1627 kvm_vmm_info = NULL;
1630 static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1631 struct kvm_dirty_log *log)
1633 struct kvm_memory_slot *memslot;
1636 unsigned long *dirty_bitmap = (unsigned long *)(kvm->arch.vm_base +
1637 offsetof(struct kvm_vm_data, kvm_mem_dirty_log));
1640 if (log->slot >= KVM_MEMORY_SLOTS)
1643 memslot = &kvm->memslots[log->slot];
1645 if (!memslot->dirty_bitmap)
1648 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1649 base = memslot->base_gfn / BITS_PER_LONG;
1651 for (i = 0; i < n/sizeof(long); ++i) {
1652 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1653 dirty_bitmap[base + i] = 0;
1660 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1661 struct kvm_dirty_log *log)
1665 struct kvm_memory_slot *memslot;
1668 spin_lock(&kvm->arch.dirty_log_lock);
1670 r = kvm_ia64_sync_dirty_log(kvm, log);
1674 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1678 /* If nothing is dirty, don't bother messing with page tables. */
1680 kvm_flush_remote_tlbs(kvm);
1681 memslot = &kvm->memslots[log->slot];
1682 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1683 memset(memslot->dirty_bitmap, 0, n);
1687 spin_unlock(&kvm->arch.dirty_log_lock);
1691 int kvm_arch_hardware_setup(void)
1696 void kvm_arch_hardware_unsetup(void)
1700 static void vcpu_kick_intr(void *info)
1703 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
1704 printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu);
1708 void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1710 int ipi_pcpu = vcpu->cpu;
1711 int cpu = get_cpu();
1713 if (waitqueue_active(&vcpu->wq))
1714 wake_up_interruptible(&vcpu->wq);
1716 if (vcpu->guest_mode && cpu != ipi_pcpu)
1717 smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
1721 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
1724 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1726 if (!test_and_set_bit(vec, &vpd->irr[0])) {
1727 vcpu->arch.irq_new_pending = 1;
1728 kvm_vcpu_kick(vcpu);
1734 int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1736 return apic->vcpu->vcpu_id == dest;
1739 int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1744 struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
1745 unsigned long bitmap)
1747 struct kvm_vcpu *lvcpu = kvm->vcpus[0];
1750 for (i = 1; i < KVM_MAX_VCPUS; i++) {
1753 if (lvcpu->arch.xtp > kvm->vcpus[i]->arch.xtp)
1754 lvcpu = kvm->vcpus[i];
1760 static int find_highest_bits(int *dat)
1765 /* loop for all 256 bits */
1766 for (i = 7; i >= 0 ; i--) {
1770 return i * 32 + bitnum - 1;
1777 int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1779 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1781 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1783 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1784 return ExtINT_VECTOR;
1786 return find_highest_bits((int *)&vpd->irr[0]);
1789 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
1791 if (kvm_highest_pending_irq(vcpu) != -1)
1796 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1798 return vcpu->arch.timer_fired;
1801 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1806 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1808 return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE;
1811 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1812 struct kvm_mp_state *mp_state)
1815 mp_state->mp_state = vcpu->arch.mp_state;
1820 static int vcpu_reset(struct kvm_vcpu *vcpu)
1824 local_irq_save(psr);
1825 r = kvm_insert_vmm_mapping(vcpu);
1829 vcpu->arch.launched = 0;
1830 kvm_arch_vcpu_uninit(vcpu);
1831 r = kvm_arch_vcpu_init(vcpu);
1835 kvm_purge_vmm_mapping(vcpu);
1838 local_irq_restore(psr);
1842 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1843 struct kvm_mp_state *mp_state)
1848 vcpu->arch.mp_state = mp_state->mp_state;
1849 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1850 r = vcpu_reset(vcpu);