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>
35 #include <asm/pgtable.h>
36 #include <asm/gcc_intrin.h>
38 #include <asm/cacheflush.h>
39 #include <asm/div64.h>
49 static unsigned long kvm_vmm_base;
50 static unsigned long kvm_vsa_base;
51 static unsigned long kvm_vm_buffer;
52 static unsigned long kvm_vm_buffer_size;
53 unsigned long kvm_vmm_gp;
55 static long vp_env_info;
57 static struct kvm_vmm_info *kvm_vmm_info;
59 static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu);
61 struct kvm_stats_debugfs_item debugfs_entries[] = {
65 static void kvm_flush_icache(unsigned long start, unsigned long len)
69 for (l = 0; l < (len + 32); l += 32)
76 static void kvm_flush_tlb_all(void)
78 unsigned long i, j, count0, count1, stride0, stride1, addr;
81 addr = local_cpu_data->ptce_base;
82 count0 = local_cpu_data->ptce_count[0];
83 count1 = local_cpu_data->ptce_count[1];
84 stride0 = local_cpu_data->ptce_stride[0];
85 stride1 = local_cpu_data->ptce_stride[1];
87 local_irq_save(flags);
88 for (i = 0; i < count0; ++i) {
89 for (j = 0; j < count1; ++j) {
95 local_irq_restore(flags);
96 ia64_srlz_i(); /* srlz.i implies srlz.d */
99 long ia64_pal_vp_create(u64 *vpd, u64 *host_iva, u64 *opt_handler)
101 struct ia64_pal_retval iprv;
103 PAL_CALL_STK(iprv, PAL_VP_CREATE, (u64)vpd, (u64)host_iva,
109 static DEFINE_SPINLOCK(vp_lock);
111 void kvm_arch_hardware_enable(void *garbage)
116 unsigned long saved_psr;
119 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
121 local_irq_save(saved_psr);
122 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
123 local_irq_restore(saved_psr);
128 status = ia64_pal_vp_init_env(kvm_vsa_base ?
129 VP_INIT_ENV : VP_INIT_ENV_INITALIZE,
130 __pa(kvm_vm_buffer), KVM_VM_BUFFER_BASE, &tmp_base);
132 printk(KERN_WARNING"kvm: Failed to Enable VT Support!!!!\n");
137 kvm_vsa_base = tmp_base;
138 printk(KERN_INFO"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base);
140 spin_unlock(&vp_lock);
141 ia64_ptr_entry(0x3, slot);
144 void kvm_arch_hardware_disable(void *garbage)
150 unsigned long saved_psr;
151 unsigned long host_iva = ia64_getreg(_IA64_REG_CR_IVA);
153 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base),
156 local_irq_save(saved_psr);
157 slot = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
158 local_irq_restore(saved_psr);
162 status = ia64_pal_vp_exit_env(host_iva);
164 printk(KERN_DEBUG"kvm: Failed to disable VT support! :%ld\n",
166 ia64_ptr_entry(0x3, slot);
169 void kvm_arch_check_processor_compat(void *rtn)
174 int kvm_dev_ioctl_check_extension(long ext)
180 case KVM_CAP_IRQCHIP:
181 case KVM_CAP_USER_MEMORY:
182 case KVM_CAP_MP_STATE:
186 case KVM_CAP_COALESCED_MMIO:
187 r = KVM_COALESCED_MMIO_PAGE_OFFSET;
196 static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
197 gpa_t addr, int len, int is_write)
199 struct kvm_io_device *dev;
201 dev = kvm_io_bus_find_dev(&vcpu->kvm->mmio_bus, addr, len, is_write);
206 static int handle_vm_error(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
208 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
209 kvm_run->hw.hardware_exit_reason = 1;
213 static int handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
215 struct kvm_mmio_req *p;
216 struct kvm_io_device *mmio_dev;
218 p = kvm_get_vcpu_ioreq(vcpu);
220 if ((p->addr & PAGE_MASK) == IOAPIC_DEFAULT_BASE_ADDRESS)
222 vcpu->mmio_needed = 1;
223 vcpu->mmio_phys_addr = kvm_run->mmio.phys_addr = p->addr;
224 vcpu->mmio_size = kvm_run->mmio.len = p->size;
225 vcpu->mmio_is_write = kvm_run->mmio.is_write = !p->dir;
227 if (vcpu->mmio_is_write)
228 memcpy(vcpu->mmio_data, &p->data, p->size);
229 memcpy(kvm_run->mmio.data, &p->data, p->size);
230 kvm_run->exit_reason = KVM_EXIT_MMIO;
233 mmio_dev = vcpu_find_mmio_dev(vcpu, p->addr, p->size, !p->dir);
236 kvm_iodevice_write(mmio_dev, p->addr, p->size,
239 kvm_iodevice_read(mmio_dev, p->addr, p->size,
243 printk(KERN_ERR"kvm: No iodevice found! addr:%lx\n", p->addr);
244 p->state = STATE_IORESP_READY;
249 static int handle_pal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
251 struct exit_ctl_data *p;
253 p = kvm_get_exit_data(vcpu);
255 if (p->exit_reason == EXIT_REASON_PAL_CALL)
256 return kvm_pal_emul(vcpu, kvm_run);
258 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
259 kvm_run->hw.hardware_exit_reason = 2;
264 static int handle_sal_call(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
266 struct exit_ctl_data *p;
268 p = kvm_get_exit_data(vcpu);
270 if (p->exit_reason == EXIT_REASON_SAL_CALL) {
274 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
275 kvm_run->hw.hardware_exit_reason = 3;
282 * offset: address offset to IPI space.
283 * value: deliver value.
285 static void vcpu_deliver_ipi(struct kvm_vcpu *vcpu, uint64_t dm,
290 kvm_apic_set_irq(vcpu, vector, 0);
293 kvm_apic_set_irq(vcpu, 2, 0);
296 kvm_apic_set_irq(vcpu, 0, 0);
301 printk(KERN_ERR"kvm: Unimplemented Deliver reserved IPI!\n");
306 static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
312 for (i = 0; i < KVM_MAX_VCPUS; i++) {
314 lid.val = VCPU_LID(kvm->vcpus[i]);
315 if (lid.id == id && lid.eid == eid)
316 return kvm->vcpus[i];
323 static int handle_ipi(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
325 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
326 struct kvm_vcpu *target_vcpu;
327 struct kvm_pt_regs *regs;
328 union ia64_ipi_a addr = p->u.ipi_data.addr;
329 union ia64_ipi_d data = p->u.ipi_data.data;
331 target_vcpu = lid_to_vcpu(vcpu->kvm, addr.id, addr.eid);
333 return handle_vm_error(vcpu, kvm_run);
335 if (!target_vcpu->arch.launched) {
336 regs = vcpu_regs(target_vcpu);
338 regs->cr_iip = vcpu->kvm->arch.rdv_sal_data.boot_ip;
339 regs->r1 = vcpu->kvm->arch.rdv_sal_data.boot_gp;
341 target_vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
342 if (waitqueue_active(&target_vcpu->wq))
343 wake_up_interruptible(&target_vcpu->wq);
345 vcpu_deliver_ipi(target_vcpu, data.dm, data.vector);
346 if (target_vcpu != vcpu)
347 kvm_vcpu_kick(target_vcpu);
354 struct kvm_ptc_g ptc_g_data;
355 struct kvm_vcpu *vcpu;
358 static void vcpu_global_purge(void *info)
360 struct call_data *p = (struct call_data *)info;
361 struct kvm_vcpu *vcpu = p->vcpu;
363 if (test_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests))
366 set_bit(KVM_REQ_PTC_G, &vcpu->requests);
367 if (vcpu->arch.ptc_g_count < MAX_PTC_G_NUM) {
368 vcpu->arch.ptc_g_data[vcpu->arch.ptc_g_count++] =
371 clear_bit(KVM_REQ_PTC_G, &vcpu->requests);
372 vcpu->arch.ptc_g_count = 0;
373 set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests);
377 static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
379 struct exit_ctl_data *p = kvm_get_exit_data(vcpu);
380 struct kvm *kvm = vcpu->kvm;
381 struct call_data call_data;
383 call_data.ptc_g_data = p->u.ptc_g_data;
385 for (i = 0; i < KVM_MAX_VCPUS; i++) {
386 if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
387 KVM_MP_STATE_UNINITIALIZED ||
388 vcpu == kvm->vcpus[i])
391 if (waitqueue_active(&kvm->vcpus[i]->wq))
392 wake_up_interruptible(&kvm->vcpus[i]->wq);
394 if (kvm->vcpus[i]->cpu != -1) {
395 call_data.vcpu = kvm->vcpus[i];
396 smp_call_function_single(kvm->vcpus[i]->cpu,
397 vcpu_global_purge, &call_data, 1);
399 printk(KERN_WARNING"kvm: Uninit vcpu received ipi!\n");
405 static int handle_switch_rr6(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
410 int kvm_emulate_halt(struct kvm_vcpu *vcpu)
415 unsigned long vcpu_now_itc;
417 unsigned long expires;
418 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
419 unsigned long cyc_per_usec = local_cpu_data->cyc_per_usec;
420 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
422 vcpu_now_itc = ia64_getreg(_IA64_REG_AR_ITC) + vcpu->arch.itc_offset;
424 if (time_after(vcpu_now_itc, vpd->itm)) {
425 vcpu->arch.timer_check = 1;
428 itc_diff = vpd->itm - vcpu_now_itc;
430 itc_diff = -itc_diff;
432 expires = div64_u64(itc_diff, cyc_per_usec);
433 kt = ktime_set(0, 1000 * expires);
434 vcpu->arch.ht_active = 1;
435 hrtimer_start(p_ht, kt, HRTIMER_MODE_ABS);
437 if (irqchip_in_kernel(vcpu->kvm)) {
438 vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
439 kvm_vcpu_block(vcpu);
440 hrtimer_cancel(p_ht);
441 vcpu->arch.ht_active = 0;
443 if (vcpu->arch.mp_state != KVM_MP_STATE_RUNNABLE)
447 printk(KERN_ERR"kvm: Unsupported userspace halt!");
452 static int handle_vm_shutdown(struct kvm_vcpu *vcpu,
453 struct kvm_run *kvm_run)
455 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
459 static int handle_external_interrupt(struct kvm_vcpu *vcpu,
460 struct kvm_run *kvm_run)
465 static int (*kvm_vti_exit_handlers[])(struct kvm_vcpu *vcpu,
466 struct kvm_run *kvm_run) = {
467 [EXIT_REASON_VM_PANIC] = handle_vm_error,
468 [EXIT_REASON_MMIO_INSTRUCTION] = handle_mmio,
469 [EXIT_REASON_PAL_CALL] = handle_pal_call,
470 [EXIT_REASON_SAL_CALL] = handle_sal_call,
471 [EXIT_REASON_SWITCH_RR6] = handle_switch_rr6,
472 [EXIT_REASON_VM_DESTROY] = handle_vm_shutdown,
473 [EXIT_REASON_EXTERNAL_INTERRUPT] = handle_external_interrupt,
474 [EXIT_REASON_IPI] = handle_ipi,
475 [EXIT_REASON_PTC_G] = handle_global_purge,
479 static const int kvm_vti_max_exit_handlers =
480 sizeof(kvm_vti_exit_handlers)/sizeof(*kvm_vti_exit_handlers);
482 static void kvm_prepare_guest_switch(struct kvm_vcpu *vcpu)
486 static uint32_t kvm_get_exit_reason(struct kvm_vcpu *vcpu)
488 struct exit_ctl_data *p_exit_data;
490 p_exit_data = kvm_get_exit_data(vcpu);
491 return p_exit_data->exit_reason;
495 * The guest has exited. See if we can fix it or if we need userspace
498 static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
500 u32 exit_reason = kvm_get_exit_reason(vcpu);
501 vcpu->arch.last_exit = exit_reason;
503 if (exit_reason < kvm_vti_max_exit_handlers
504 && kvm_vti_exit_handlers[exit_reason])
505 return kvm_vti_exit_handlers[exit_reason](vcpu, kvm_run);
507 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
508 kvm_run->hw.hardware_exit_reason = exit_reason;
513 static inline void vti_set_rr6(unsigned long rr6)
515 ia64_set_rr(RR6, rr6);
519 static int kvm_insert_vmm_mapping(struct kvm_vcpu *vcpu)
522 struct kvm *kvm = vcpu->kvm;
525 /*Insert a pair of tr to map vmm*/
526 pte = pte_val(mk_pte_phys(__pa(kvm_vmm_base), PAGE_KERNEL));
527 r = ia64_itr_entry(0x3, KVM_VMM_BASE, pte, KVM_VMM_SHIFT);
530 vcpu->arch.vmm_tr_slot = r;
531 /*Insert a pairt of tr to map data of vm*/
532 pte = pte_val(mk_pte_phys(__pa(kvm->arch.vm_base), PAGE_KERNEL));
533 r = ia64_itr_entry(0x3, KVM_VM_DATA_BASE,
534 pte, KVM_VM_DATA_SHIFT);
537 vcpu->arch.vm_tr_slot = r;
544 static void kvm_purge_vmm_mapping(struct kvm_vcpu *vcpu)
547 ia64_ptr_entry(0x3, vcpu->arch.vmm_tr_slot);
548 ia64_ptr_entry(0x3, vcpu->arch.vm_tr_slot);
552 static int kvm_vcpu_pre_transition(struct kvm_vcpu *vcpu)
554 int cpu = smp_processor_id();
556 if (vcpu->arch.last_run_cpu != cpu ||
557 per_cpu(last_vcpu, cpu) != vcpu) {
558 per_cpu(last_vcpu, cpu) = vcpu;
559 vcpu->arch.last_run_cpu = cpu;
563 vcpu->arch.host_rr6 = ia64_get_rr(RR6);
564 vti_set_rr6(vcpu->arch.vmm_rr);
565 return kvm_insert_vmm_mapping(vcpu);
567 static void kvm_vcpu_post_transition(struct kvm_vcpu *vcpu)
569 kvm_purge_vmm_mapping(vcpu);
570 vti_set_rr6(vcpu->arch.host_rr6);
573 static int vti_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
575 union context *host_ctx, *guest_ctx;
578 /*Get host and guest context with guest address space.*/
579 host_ctx = kvm_get_host_context(vcpu);
580 guest_ctx = kvm_get_guest_context(vcpu);
582 r = kvm_vcpu_pre_transition(vcpu);
585 kvm_vmm_info->tramp_entry(host_ctx, guest_ctx);
586 kvm_vcpu_post_transition(vcpu);
592 static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
599 kvm_prepare_guest_switch(vcpu);
602 if (signal_pending(current)) {
606 kvm_run->exit_reason = KVM_EXIT_INTR;
610 vcpu->guest_mode = 1;
613 r = vti_vcpu_run(vcpu, kvm_run);
617 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
621 vcpu->arch.launched = 1;
622 vcpu->guest_mode = 0;
626 * We must have an instruction between local_irq_enable() and
627 * kvm_guest_exit(), so the timer interrupt isn't delayed by
628 * the interrupt shadow. The stat.exits increment will do nicely.
629 * But we need to prevent reordering, hence this barrier():
637 r = kvm_handle_exit(kvm_run, vcpu);
653 static void kvm_set_mmio_data(struct kvm_vcpu *vcpu)
655 struct kvm_mmio_req *p = kvm_get_vcpu_ioreq(vcpu);
657 if (!vcpu->mmio_is_write)
658 memcpy(&p->data, vcpu->mmio_data, 8);
659 p->state = STATE_IORESP_READY;
662 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
669 if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
670 kvm_vcpu_block(vcpu);
675 if (vcpu->sigset_active)
676 sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
678 if (vcpu->mmio_needed) {
679 memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
680 kvm_set_mmio_data(vcpu);
681 vcpu->mmio_read_completed = 1;
682 vcpu->mmio_needed = 0;
684 r = __vcpu_run(vcpu, kvm_run);
686 if (vcpu->sigset_active)
687 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
694 * Allocate 16M memory for every vm to hold its specific data.
695 * Its memory map is defined in kvm_host.h.
697 static struct kvm *kvm_alloc_kvm(void)
703 vm_base = __get_free_pages(GFP_KERNEL, get_order(KVM_VM_DATA_SIZE));
706 return ERR_PTR(-ENOMEM);
707 printk(KERN_DEBUG"kvm: VM data's base Address:0x%lx\n", vm_base);
709 /* Zero all pages before use! */
710 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
712 kvm = (struct kvm *)(vm_base + KVM_VM_OFS);
713 kvm->arch.vm_base = vm_base;
718 struct kvm_io_range {
724 static const struct kvm_io_range io_ranges[] = {
725 {VGA_IO_START, VGA_IO_SIZE, GPFN_FRAME_BUFFER},
726 {MMIO_START, MMIO_SIZE, GPFN_LOW_MMIO},
727 {LEGACY_IO_START, LEGACY_IO_SIZE, GPFN_LEGACY_IO},
728 {IO_SAPIC_START, IO_SAPIC_SIZE, GPFN_IOSAPIC},
729 {PIB_START, PIB_SIZE, GPFN_PIB},
732 static void kvm_build_io_pmt(struct kvm *kvm)
736 /* Mark I/O ranges */
737 for (i = 0; i < (sizeof(io_ranges) / sizeof(struct kvm_io_range));
739 for (j = io_ranges[i].start;
740 j < io_ranges[i].start + io_ranges[i].size;
742 kvm_set_pmt_entry(kvm, j >> PAGE_SHIFT,
743 io_ranges[i].type, 0);
748 /*Use unused rids to virtualize guest rid.*/
749 #define GUEST_PHYSICAL_RR0 0x1739
750 #define GUEST_PHYSICAL_RR4 0x2739
751 #define VMM_INIT_RR 0x1660
753 static void kvm_init_vm(struct kvm *kvm)
759 kvm->arch.metaphysical_rr0 = GUEST_PHYSICAL_RR0;
760 kvm->arch.metaphysical_rr4 = GUEST_PHYSICAL_RR4;
761 kvm->arch.vmm_init_rr = VMM_INIT_RR;
763 vm_base = kvm->arch.vm_base;
765 kvm->arch.vhpt_base = vm_base + KVM_VHPT_OFS;
766 kvm->arch.vtlb_base = vm_base + KVM_VTLB_OFS;
767 kvm->arch.vpd_base = vm_base + KVM_VPD_OFS;
771 *Fill P2M entries for MMIO/IO ranges
773 kvm_build_io_pmt(kvm);
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 IA64_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_ioapic_set_irq(kvm->arch.vioapic,
941 mutex_unlock(&kvm->lock);
946 case KVM_GET_IRQCHIP: {
947 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
948 struct kvm_irqchip chip;
951 if (copy_from_user(&chip, argp, sizeof chip))
954 if (!irqchip_in_kernel(kvm))
956 r = kvm_vm_ioctl_get_irqchip(kvm, &chip);
960 if (copy_to_user(argp, &chip, sizeof chip))
965 case KVM_SET_IRQCHIP: {
966 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
967 struct kvm_irqchip chip;
970 if (copy_from_user(&chip, argp, sizeof chip))
973 if (!irqchip_in_kernel(kvm))
975 r = kvm_vm_ioctl_set_irqchip(kvm, &chip);
988 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
989 struct kvm_sregs *sregs)
994 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
995 struct kvm_sregs *sregs)
1000 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
1001 struct kvm_translation *tr)
1007 static int kvm_alloc_vmm_area(void)
1009 if (!kvm_vmm_base && (kvm_vm_buffer_size < KVM_VM_BUFFER_SIZE)) {
1010 kvm_vmm_base = __get_free_pages(GFP_KERNEL,
1011 get_order(KVM_VMM_SIZE));
1015 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1016 kvm_vm_buffer = kvm_vmm_base + VMM_SIZE;
1018 printk(KERN_DEBUG"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1019 kvm_vmm_base, kvm_vm_buffer);
1025 static void kvm_free_vmm_area(void)
1028 /*Zero this area before free to avoid bits leak!!*/
1029 memset((void *)kvm_vmm_base, 0, KVM_VMM_SIZE);
1030 free_pages(kvm_vmm_base, get_order(KVM_VMM_SIZE));
1037 static void vti_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1041 static int vti_init_vpd(struct kvm_vcpu *vcpu)
1044 union cpuid3_t cpuid3;
1045 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1048 return PTR_ERR(vpd);
1051 for (i = 0; i < 5; i++)
1052 vpd->vcpuid[i] = ia64_get_cpuid(i);
1054 /* Limit the CPUID number to 5 */
1055 cpuid3.value = vpd->vcpuid[3];
1056 cpuid3.number = 4; /* 5 - 1 */
1057 vpd->vcpuid[3] = cpuid3.value;
1059 /*Set vac and vdc fields*/
1060 vpd->vac.a_from_int_cr = 1;
1061 vpd->vac.a_to_int_cr = 1;
1062 vpd->vac.a_from_psr = 1;
1063 vpd->vac.a_from_cpuid = 1;
1064 vpd->vac.a_cover = 1;
1067 vpd->vdc.d_vmsw = 1;
1069 /*Set virtual buffer*/
1070 vpd->virt_env_vaddr = KVM_VM_BUFFER_BASE;
1075 static int vti_create_vp(struct kvm_vcpu *vcpu)
1078 struct vpd *vpd = vcpu->arch.vpd;
1079 unsigned long vmm_ivt;
1081 vmm_ivt = kvm_vmm_info->vmm_ivt;
1083 printk(KERN_DEBUG "kvm: vcpu:%p,ivt: 0x%lx\n", vcpu, vmm_ivt);
1085 ret = ia64_pal_vp_create((u64 *)vpd, (u64 *)vmm_ivt, 0);
1088 printk(KERN_ERR"kvm: ia64_pal_vp_create failed!\n");
1094 static void init_ptce_info(struct kvm_vcpu *vcpu)
1096 ia64_ptce_info_t ptce = {0};
1098 ia64_get_ptce(&ptce);
1099 vcpu->arch.ptce_base = ptce.base;
1100 vcpu->arch.ptce_count[0] = ptce.count[0];
1101 vcpu->arch.ptce_count[1] = ptce.count[1];
1102 vcpu->arch.ptce_stride[0] = ptce.stride[0];
1103 vcpu->arch.ptce_stride[1] = ptce.stride[1];
1106 static void kvm_migrate_hlt_timer(struct kvm_vcpu *vcpu)
1108 struct hrtimer *p_ht = &vcpu->arch.hlt_timer;
1110 if (hrtimer_cancel(p_ht))
1111 hrtimer_start(p_ht, p_ht->expires, HRTIMER_MODE_ABS);
1114 static enum hrtimer_restart hlt_timer_fn(struct hrtimer *data)
1116 struct kvm_vcpu *vcpu;
1117 wait_queue_head_t *q;
1119 vcpu = container_of(data, struct kvm_vcpu, arch.hlt_timer);
1120 if (vcpu->arch.mp_state != KVM_MP_STATE_HALTED)
1124 if (waitqueue_active(q)) {
1125 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
1126 wake_up_interruptible(q);
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 /*Initilize itc offset for vcpus*/
1158 itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
1159 for (i = 0; i < MAX_VCPU_NUM; i++) {
1160 v = (struct kvm_vcpu *)((char *)vcpu + VCPU_SIZE * i);
1161 v->arch.itc_offset = itc_offset;
1162 v->arch.last_itc = 0;
1165 vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
1168 vcpu->arch.apic = kzalloc(sizeof(struct kvm_lapic), GFP_KERNEL);
1169 if (!vcpu->arch.apic)
1171 vcpu->arch.apic->vcpu = vcpu;
1174 p_ctx->gr[12] = (unsigned long)((char *)vmm_vcpu + IA64_STK_OFFSET);
1175 p_ctx->gr[13] = (unsigned long)vmm_vcpu;
1176 p_ctx->psr = 0x1008522000UL;
1177 p_ctx->ar[40] = FPSR_DEFAULT; /*fpsr*/
1178 p_ctx->caller_unat = 0;
1180 p_ctx->ar[36] = 0x0; /*unat*/
1181 p_ctx->ar[19] = 0x0; /*rnat*/
1182 p_ctx->ar[18] = (unsigned long)vmm_vcpu +
1183 ((sizeof(struct kvm_vcpu)+15) & ~15);
1184 p_ctx->ar[64] = 0x0; /*pfs*/
1185 p_ctx->cr[0] = 0x7e04UL;
1186 p_ctx->cr[2] = (unsigned long)kvm_vmm_info->vmm_ivt;
1187 p_ctx->cr[8] = 0x3c;
1189 /*Initilize region register*/
1190 p_ctx->rr[0] = 0x30;
1191 p_ctx->rr[1] = 0x30;
1192 p_ctx->rr[2] = 0x30;
1193 p_ctx->rr[3] = 0x30;
1194 p_ctx->rr[4] = 0x30;
1195 p_ctx->rr[5] = 0x30;
1196 p_ctx->rr[7] = 0x30;
1198 /*Initilize branch register 0*/
1199 p_ctx->br[0] = *(unsigned long *)kvm_vmm_info->vmm_entry;
1201 vcpu->arch.vmm_rr = kvm->arch.vmm_init_rr;
1202 vcpu->arch.metaphysical_rr0 = kvm->arch.metaphysical_rr0;
1203 vcpu->arch.metaphysical_rr4 = kvm->arch.metaphysical_rr4;
1205 hrtimer_init(&vcpu->arch.hlt_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
1206 vcpu->arch.hlt_timer.function = hlt_timer_fn;
1208 vcpu->arch.last_run_cpu = -1;
1209 vcpu->arch.vpd = (struct vpd *)VPD_ADDR(vcpu->vcpu_id);
1210 vcpu->arch.vsa_base = kvm_vsa_base;
1211 vcpu->arch.__gp = kvm_vmm_gp;
1212 vcpu->arch.dirty_log_lock_pa = __pa(&kvm->arch.dirty_log_lock);
1213 vcpu->arch.vhpt.hash = (struct thash_data *)VHPT_ADDR(vcpu->vcpu_id);
1214 vcpu->arch.vtlb.hash = (struct thash_data *)VTLB_ADDR(vcpu->vcpu_id);
1215 init_ptce_info(vcpu);
1222 static int vti_vcpu_setup(struct kvm_vcpu *vcpu, int id)
1227 local_irq_save(psr);
1228 r = kvm_insert_vmm_mapping(vcpu);
1231 r = kvm_vcpu_init(vcpu, vcpu->kvm, id);
1235 r = vti_init_vpd(vcpu);
1237 printk(KERN_DEBUG"kvm: vpd init error!!\n");
1241 r = vti_create_vp(vcpu);
1245 kvm_purge_vmm_mapping(vcpu);
1246 local_irq_restore(psr);
1250 kvm_vcpu_uninit(vcpu);
1252 local_irq_restore(psr);
1256 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
1259 struct kvm_vcpu *vcpu;
1260 unsigned long vm_base = kvm->arch.vm_base;
1266 printk(KERN_ERR"kvm: Create vcpu[%d] error!\n", id);
1269 vcpu = (struct kvm_vcpu *)(vm_base + KVM_VCPU_OFS + VCPU_SIZE * id);
1273 vti_vcpu_load(vcpu, cpu);
1274 r = vti_vcpu_setup(vcpu, id);
1278 printk(KERN_DEBUG"kvm: vcpu_setup error!!\n");
1287 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
1292 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1297 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
1302 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
1303 struct kvm_debug_guest *dbg)
1308 static void free_kvm(struct kvm *kvm)
1310 unsigned long vm_base = kvm->arch.vm_base;
1313 memset((void *)vm_base, 0, KVM_VM_DATA_SIZE);
1314 free_pages(vm_base, get_order(KVM_VM_DATA_SIZE));
1319 static void kvm_release_vm_pages(struct kvm *kvm)
1321 struct kvm_memory_slot *memslot;
1323 unsigned long base_gfn;
1325 for (i = 0; i < kvm->nmemslots; i++) {
1326 memslot = &kvm->memslots[i];
1327 base_gfn = memslot->base_gfn;
1329 for (j = 0; j < memslot->npages; j++) {
1330 if (memslot->rmap[j])
1331 put_page((struct page *)memslot->rmap[j]);
1336 void kvm_arch_destroy_vm(struct kvm *kvm)
1338 kfree(kvm->arch.vioapic);
1339 kvm_release_vm_pages(kvm);
1340 kvm_free_physmem(kvm);
1344 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
1348 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
1350 if (cpu != vcpu->cpu) {
1352 if (vcpu->arch.ht_active)
1353 kvm_migrate_hlt_timer(vcpu);
1357 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1359 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
1363 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1366 for (i = 0; i < 16; i++) {
1367 regs->vpd.vgr[i] = vpd->vgr[i];
1368 regs->vpd.vbgr[i] = vpd->vbgr[i];
1370 for (i = 0; i < 128; i++)
1371 regs->vpd.vcr[i] = vpd->vcr[i];
1372 regs->vpd.vhpi = vpd->vhpi;
1373 regs->vpd.vnat = vpd->vnat;
1374 regs->vpd.vbnat = vpd->vbnat;
1375 regs->vpd.vpsr = vpd->vpsr;
1376 regs->vpd.vpr = vpd->vpr;
1379 r = copy_to_user(regs->saved_guest, &vcpu->arch.guest,
1380 sizeof(union context));
1383 r = copy_to_user(regs->saved_stack, (void *)vcpu, IA64_STK_OFFSET);
1386 SAVE_REGS(mp_state);
1388 memcpy(regs->itrs, vcpu->arch.itrs, sizeof(struct thash_data) * NITRS);
1389 memcpy(regs->dtrs, vcpu->arch.dtrs, sizeof(struct thash_data) * NDTRS);
1390 SAVE_REGS(itr_regions);
1391 SAVE_REGS(dtr_regions);
1392 SAVE_REGS(tc_regions);
1393 SAVE_REGS(irq_check);
1394 SAVE_REGS(itc_check);
1395 SAVE_REGS(timer_check);
1396 SAVE_REGS(timer_pending);
1397 SAVE_REGS(last_itc);
1398 for (i = 0; i < 8; i++) {
1399 regs->vrr[i] = vcpu->arch.vrr[i];
1400 regs->ibr[i] = vcpu->arch.ibr[i];
1401 regs->dbr[i] = vcpu->arch.dbr[i];
1403 for (i = 0; i < 4; i++)
1404 regs->insvc[i] = vcpu->arch.insvc[i];
1405 regs->saved_itc = vcpu->arch.itc_offset + ia64_getreg(_IA64_REG_AR_ITC);
1407 SAVE_REGS(metaphysical_rr0);
1408 SAVE_REGS(metaphysical_rr4);
1409 SAVE_REGS(metaphysical_saved_rr0);
1410 SAVE_REGS(metaphysical_saved_rr4);
1412 SAVE_REGS(saved_gp);
1419 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
1422 hrtimer_cancel(&vcpu->arch.hlt_timer);
1423 kfree(vcpu->arch.apic);
1427 long kvm_arch_vcpu_ioctl(struct file *filp,
1428 unsigned int ioctl, unsigned long arg)
1433 int kvm_arch_set_memory_region(struct kvm *kvm,
1434 struct kvm_userspace_memory_region *mem,
1435 struct kvm_memory_slot old,
1440 int npages = mem->memory_size >> PAGE_SHIFT;
1441 struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
1442 unsigned long base_gfn = memslot->base_gfn;
1444 for (i = 0; i < npages; i++) {
1445 page = gfn_to_page(kvm, base_gfn + i);
1446 kvm_set_pmt_entry(kvm, base_gfn + i,
1447 page_to_pfn(page) << PAGE_SHIFT,
1448 _PAGE_AR_RWX|_PAGE_MA_WB);
1449 memslot->rmap[i] = (unsigned long)page;
1455 void kvm_arch_flush_shadow(struct kvm *kvm)
1459 long kvm_arch_dev_ioctl(struct file *filp,
1460 unsigned int ioctl, unsigned long arg)
1465 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
1467 kvm_vcpu_uninit(vcpu);
1470 static int vti_cpu_has_kvm_support(void)
1472 long avail = 1, status = 1, control = 1;
1475 ret = ia64_pal_proc_get_features(&avail, &status, &control, 0);
1479 if (!(avail & PAL_PROC_VM_BIT))
1482 printk(KERN_DEBUG"kvm: Hardware Supports VT\n");
1484 ret = ia64_pal_vp_env_info(&kvm_vm_buffer_size, &vp_env_info);
1487 printk(KERN_DEBUG"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size);
1489 if (!(vp_env_info & VP_OPCODE)) {
1490 printk(KERN_WARNING"kvm: No opcode ability on hardware, "
1491 "vm_env_info:0x%lx\n", vp_env_info);
1499 static int kvm_relocate_vmm(struct kvm_vmm_info *vmm_info,
1500 struct module *module)
1502 unsigned long module_base;
1503 unsigned long vmm_size;
1505 unsigned long vmm_offset, func_offset, fdesc_offset;
1506 struct fdesc *p_fdesc;
1510 if (!kvm_vmm_base) {
1511 printk("kvm: kvm area hasn't been initilized yet!!\n");
1515 /*Calculate new position of relocated vmm module.*/
1516 module_base = (unsigned long)module->module_core;
1517 vmm_size = module->core_size;
1518 if (unlikely(vmm_size > KVM_VMM_SIZE))
1521 memcpy((void *)kvm_vmm_base, (void *)module_base, vmm_size);
1522 kvm_flush_icache(kvm_vmm_base, vmm_size);
1524 /*Recalculate kvm_vmm_info based on new VMM*/
1525 vmm_offset = vmm_info->vmm_ivt - module_base;
1526 kvm_vmm_info->vmm_ivt = KVM_VMM_BASE + vmm_offset;
1527 printk(KERN_DEBUG"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1528 kvm_vmm_info->vmm_ivt);
1530 fdesc_offset = (unsigned long)vmm_info->vmm_entry - module_base;
1531 kvm_vmm_info->vmm_entry = (kvm_vmm_entry *)(KVM_VMM_BASE +
1533 func_offset = *(unsigned long *)vmm_info->vmm_entry - module_base;
1534 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1535 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1536 p_fdesc->gp = KVM_VMM_BASE+(p_fdesc->gp - module_base);
1538 printk(KERN_DEBUG"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1539 KVM_VMM_BASE+func_offset);
1541 fdesc_offset = (unsigned long)vmm_info->tramp_entry - module_base;
1542 kvm_vmm_info->tramp_entry = (kvm_tramp_entry *)(KVM_VMM_BASE +
1544 func_offset = *(unsigned long *)vmm_info->tramp_entry - module_base;
1545 p_fdesc = (struct fdesc *)(kvm_vmm_base + fdesc_offset);
1546 p_fdesc->ip = KVM_VMM_BASE + func_offset;
1547 p_fdesc->gp = KVM_VMM_BASE + (p_fdesc->gp - module_base);
1549 kvm_vmm_gp = p_fdesc->gp;
1551 printk(KERN_DEBUG"kvm: Relocated VMM's Entry IP:%p\n",
1552 kvm_vmm_info->vmm_entry);
1553 printk(KERN_DEBUG"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1554 KVM_VMM_BASE + func_offset);
1559 int kvm_arch_init(void *opaque)
1562 struct kvm_vmm_info *vmm_info = (struct kvm_vmm_info *)opaque;
1564 if (!vti_cpu_has_kvm_support()) {
1565 printk(KERN_ERR "kvm: No Hardware Virtualization Support!\n");
1571 printk(KERN_ERR "kvm: Already loaded VMM module!\n");
1577 kvm_vmm_info = kzalloc(sizeof(struct kvm_vmm_info), GFP_KERNEL);
1581 if (kvm_alloc_vmm_area())
1584 r = kvm_relocate_vmm(vmm_info, vmm_info->module);
1591 kvm_free_vmm_area();
1593 kfree(kvm_vmm_info);
1598 void kvm_arch_exit(void)
1600 kvm_free_vmm_area();
1601 kfree(kvm_vmm_info);
1602 kvm_vmm_info = NULL;
1605 static int kvm_ia64_sync_dirty_log(struct kvm *kvm,
1606 struct kvm_dirty_log *log)
1608 struct kvm_memory_slot *memslot;
1611 unsigned long *dirty_bitmap = (unsigned long *)((void *)kvm - KVM_VM_OFS
1612 + KVM_MEM_DIRTY_LOG_OFS);
1615 if (log->slot >= KVM_MEMORY_SLOTS)
1618 memslot = &kvm->memslots[log->slot];
1620 if (!memslot->dirty_bitmap)
1623 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1624 base = memslot->base_gfn / BITS_PER_LONG;
1626 for (i = 0; i < n/sizeof(long); ++i) {
1627 memslot->dirty_bitmap[i] = dirty_bitmap[base + i];
1628 dirty_bitmap[base + i] = 0;
1635 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
1636 struct kvm_dirty_log *log)
1640 struct kvm_memory_slot *memslot;
1643 spin_lock(&kvm->arch.dirty_log_lock);
1645 r = kvm_ia64_sync_dirty_log(kvm, log);
1649 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1653 /* If nothing is dirty, don't bother messing with page tables. */
1655 kvm_flush_remote_tlbs(kvm);
1656 memslot = &kvm->memslots[log->slot];
1657 n = ALIGN(memslot->npages, BITS_PER_LONG) / 8;
1658 memset(memslot->dirty_bitmap, 0, n);
1662 spin_unlock(&kvm->arch.dirty_log_lock);
1666 int kvm_arch_hardware_setup(void)
1671 void kvm_arch_hardware_unsetup(void)
1675 static void vcpu_kick_intr(void *info)
1678 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)info;
1679 printk(KERN_DEBUG"vcpu_kick_intr %p \n", vcpu);
1683 void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
1685 int ipi_pcpu = vcpu->cpu;
1687 if (waitqueue_active(&vcpu->wq))
1688 wake_up_interruptible(&vcpu->wq);
1690 if (vcpu->guest_mode)
1691 smp_call_function_single(ipi_pcpu, vcpu_kick_intr, vcpu, 0);
1694 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, u8 vec, u8 trig)
1697 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1699 if (!test_and_set_bit(vec, &vpd->irr[0])) {
1700 vcpu->arch.irq_new_pending = 1;
1701 if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE)
1702 kvm_vcpu_kick(vcpu);
1703 else if (vcpu->arch.mp_state == KVM_MP_STATE_HALTED) {
1704 vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
1705 if (waitqueue_active(&vcpu->wq))
1706 wake_up_interruptible(&vcpu->wq);
1713 int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest)
1715 return apic->vcpu->vcpu_id == dest;
1718 int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda)
1723 struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
1724 unsigned long bitmap)
1726 struct kvm_vcpu *lvcpu = kvm->vcpus[0];
1729 for (i = 1; i < KVM_MAX_VCPUS; i++) {
1732 if (lvcpu->arch.xtp > kvm->vcpus[i]->arch.xtp)
1733 lvcpu = kvm->vcpus[i];
1739 static int find_highest_bits(int *dat)
1744 /* loop for all 256 bits */
1745 for (i = 7; i >= 0 ; i--) {
1749 return i * 32 + bitnum - 1;
1756 int kvm_highest_pending_irq(struct kvm_vcpu *vcpu)
1758 struct vpd *vpd = to_host(vcpu->kvm, vcpu->arch.vpd);
1760 if (vpd->irr[0] & (1UL << NMI_VECTOR))
1762 if (vpd->irr[0] & (1UL << ExtINT_VECTOR))
1763 return ExtINT_VECTOR;
1765 return find_highest_bits((int *)&vpd->irr[0]);
1768 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
1770 if (kvm_highest_pending_irq(vcpu) != -1)
1775 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
1780 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
1785 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
1787 return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE;
1790 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
1791 struct kvm_mp_state *mp_state)
1794 mp_state->mp_state = vcpu->arch.mp_state;
1799 static int vcpu_reset(struct kvm_vcpu *vcpu)
1803 local_irq_save(psr);
1804 r = kvm_insert_vmm_mapping(vcpu);
1808 vcpu->arch.launched = 0;
1809 kvm_arch_vcpu_uninit(vcpu);
1810 r = kvm_arch_vcpu_init(vcpu);
1814 kvm_purge_vmm_mapping(vcpu);
1817 local_irq_restore(psr);
1821 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
1822 struct kvm_mp_state *mp_state)
1827 vcpu->arch.mp_state = mp_state->mp_state;
1828 if (vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)
1829 r = vcpu_reset(vcpu);