3 * kvm_ia64.c: Basic KVM suppport On Itanium series processors
6 * Copyright (C) 2007, Intel Corporation.
7 * Xiantao Zhang (xiantao.zhang@intel.com)
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms and conditions of the GNU General Public License,
11 * version 2, as published by the Free Software Foundation.
13 * This program is distributed in the hope it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * You should have received a copy of the GNU General Public License along with
19 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
20 * Place - Suite 330, Boston, MA 02111-1307 USA.
24 #include <linux/module.h>
25 #include <linux/errno.h>
26 #include <linux/percpu.h>
27 #include <linux/gfp.h>
29 #include <linux/smp.h>
30 #include <linux/kvm_host.h>
31 #include <linux/kvm.h>
32 #include <linux/bitops.h>
33 #include <linux/hrtimer.h>
34 #include <linux/uaccess.h>
36 #include <asm/pgtable.h>
37 #include <asm/gcc_intrin.h>
39 #include <asm/cacheflush.h>
40 #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
[] = {
71 static void kvm_flush_icache(unsigned long start
, unsigned long len
)
75 for (l
= 0; l
< (len
+ 32); l
+= 32)
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
),
127 local_irq_save(saved_psr
);
128 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
131 local_irq_restore(saved_psr
);
134 status
= ia64_pal_vp_init_env(kvm_vsa_base
?
135 VP_INIT_ENV
: VP_INIT_ENV_INITALIZE
,
136 __pa(kvm_vm_buffer
), KVM_VM_BUFFER_BASE
, &tmp_base
);
138 printk(KERN_WARNING
"kvm: Failed to Enable VT Support!!!!\n");
143 kvm_vsa_base
= tmp_base
;
144 printk(KERN_INFO
"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base
);
146 spin_unlock(&vp_lock
);
147 ia64_ptr_entry(0x3, slot
);
150 void kvm_arch_hardware_disable(void *garbage
)
156 unsigned long saved_psr
;
157 unsigned long host_iva
= ia64_getreg(_IA64_REG_CR_IVA
);
159 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
162 local_irq_save(saved_psr
);
163 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
166 local_irq_restore(saved_psr
);
168 status
= ia64_pal_vp_exit_env(host_iva
);
170 printk(KERN_DEBUG
"kvm: Failed to disable VT support! :%ld\n",
172 ia64_ptr_entry(0x3, slot
);
175 void kvm_arch_check_processor_compat(void *rtn
)
180 int kvm_dev_ioctl_check_extension(long ext
)
186 case KVM_CAP_IRQCHIP
:
187 case KVM_CAP_USER_MEMORY
:
198 static struct kvm_io_device
*vcpu_find_mmio_dev(struct kvm_vcpu
*vcpu
,
201 struct kvm_io_device
*dev
;
203 dev
= kvm_io_bus_find_dev(&vcpu
->kvm
->mmio_bus
, addr
);
208 static int handle_vm_error(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
210 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
211 kvm_run
->hw
.hardware_exit_reason
= 1;
215 static int handle_mmio(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
217 struct kvm_mmio_req
*p
;
218 struct kvm_io_device
*mmio_dev
;
220 p
= kvm_get_vcpu_ioreq(vcpu
);
222 if ((p
->addr
& PAGE_MASK
) == IOAPIC_DEFAULT_BASE_ADDRESS
)
224 vcpu
->mmio_needed
= 1;
225 vcpu
->mmio_phys_addr
= kvm_run
->mmio
.phys_addr
= p
->addr
;
226 vcpu
->mmio_size
= kvm_run
->mmio
.len
= p
->size
;
227 vcpu
->mmio_is_write
= kvm_run
->mmio
.is_write
= !p
->dir
;
229 if (vcpu
->mmio_is_write
)
230 memcpy(vcpu
->mmio_data
, &p
->data
, p
->size
);
231 memcpy(kvm_run
->mmio
.data
, &p
->data
, p
->size
);
232 kvm_run
->exit_reason
= KVM_EXIT_MMIO
;
235 mmio_dev
= vcpu_find_mmio_dev(vcpu
, p
->addr
);
238 kvm_iodevice_write(mmio_dev
, p
->addr
, p
->size
,
241 kvm_iodevice_read(mmio_dev
, p
->addr
, p
->size
,
245 printk(KERN_ERR
"kvm: No iodevice found! addr:%lx\n", p
->addr
);
246 p
->state
= STATE_IORESP_READY
;
251 static int handle_pal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
253 struct exit_ctl_data
*p
;
255 p
= kvm_get_exit_data(vcpu
);
257 if (p
->exit_reason
== EXIT_REASON_PAL_CALL
)
258 return kvm_pal_emul(vcpu
, kvm_run
);
260 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
261 kvm_run
->hw
.hardware_exit_reason
= 2;
266 static int handle_sal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
268 struct exit_ctl_data
*p
;
270 p
= kvm_get_exit_data(vcpu
);
272 if (p
->exit_reason
== EXIT_REASON_SAL_CALL
) {
276 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
277 kvm_run
->hw
.hardware_exit_reason
= 3;
284 * offset: address offset to IPI space.
285 * value: deliver value.
287 static void vcpu_deliver_ipi(struct kvm_vcpu
*vcpu
, uint64_t dm
,
292 kvm_apic_set_irq(vcpu
, vector
, 0);
295 kvm_apic_set_irq(vcpu
, 2, 0);
298 kvm_apic_set_irq(vcpu
, 0, 0);
303 printk(KERN_ERR
"kvm: Unimplemented Deliver reserved IPI!\n");
308 static struct kvm_vcpu
*lid_to_vcpu(struct kvm
*kvm
, unsigned long id
,
314 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
316 lid
.val
= VCPU_LID(kvm
->vcpus
[i
]);
317 if (lid
.id
== id
&& lid
.eid
== eid
)
318 return kvm
->vcpus
[i
];
325 static int handle_ipi(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
327 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
328 struct kvm_vcpu
*target_vcpu
;
329 struct kvm_pt_regs
*regs
;
330 union ia64_ipi_a addr
= p
->u
.ipi_data
.addr
;
331 union ia64_ipi_d data
= p
->u
.ipi_data
.data
;
333 target_vcpu
= lid_to_vcpu(vcpu
->kvm
, addr
.id
, addr
.eid
);
335 return handle_vm_error(vcpu
, kvm_run
);
337 if (!target_vcpu
->arch
.launched
) {
338 regs
= vcpu_regs(target_vcpu
);
340 regs
->cr_iip
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_ip
;
341 regs
->r1
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_gp
;
343 target_vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
344 if (waitqueue_active(&target_vcpu
->wq
))
345 wake_up_interruptible(&target_vcpu
->wq
);
347 vcpu_deliver_ipi(target_vcpu
, data
.dm
, data
.vector
);
348 if (target_vcpu
!= vcpu
)
349 kvm_vcpu_kick(target_vcpu
);
356 struct kvm_ptc_g ptc_g_data
;
357 struct kvm_vcpu
*vcpu
;
360 static void vcpu_global_purge(void *info
)
362 struct call_data
*p
= (struct call_data
*)info
;
363 struct kvm_vcpu
*vcpu
= p
->vcpu
;
365 if (test_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
))
368 set_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
369 if (vcpu
->arch
.ptc_g_count
< MAX_PTC_G_NUM
) {
370 vcpu
->arch
.ptc_g_data
[vcpu
->arch
.ptc_g_count
++] =
373 clear_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
374 vcpu
->arch
.ptc_g_count
= 0;
375 set_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
);
379 static int handle_global_purge(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
381 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
382 struct kvm
*kvm
= vcpu
->kvm
;
383 struct call_data call_data
;
385 call_data
.ptc_g_data
= p
->u
.ptc_g_data
;
387 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
388 if (!kvm
->vcpus
[i
] || kvm
->vcpus
[i
]->arch
.mp_state
==
389 KVM_MP_STATE_UNINITIALIZED
||
390 vcpu
== kvm
->vcpus
[i
])
393 if (waitqueue_active(&kvm
->vcpus
[i
]->wq
))
394 wake_up_interruptible(&kvm
->vcpus
[i
]->wq
);
396 if (kvm
->vcpus
[i
]->cpu
!= -1) {
397 call_data
.vcpu
= kvm
->vcpus
[i
];
398 smp_call_function_single(kvm
->vcpus
[i
]->cpu
,
399 vcpu_global_purge
, &call_data
, 0, 1);
401 printk(KERN_WARNING
"kvm: Uninit vcpu received ipi!\n");
407 static int handle_switch_rr6(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
412 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
417 unsigned long vcpu_now_itc
;
419 unsigned long expires
;
420 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
421 unsigned long cyc_per_usec
= local_cpu_data
->cyc_per_usec
;
422 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
424 vcpu_now_itc
= ia64_getreg(_IA64_REG_AR_ITC
) + vcpu
->arch
.itc_offset
;
426 if (time_after(vcpu_now_itc
, vpd
->itm
)) {
427 vcpu
->arch
.timer_check
= 1;
430 itc_diff
= vpd
->itm
- vcpu_now_itc
;
432 itc_diff
= -itc_diff
;
434 expires
= div64_64(itc_diff
, cyc_per_usec
);
435 kt
= ktime_set(0, 1000 * expires
);
436 vcpu
->arch
.ht_active
= 1;
437 hrtimer_start(p_ht
, kt
, HRTIMER_MODE_ABS
);
439 if (irqchip_in_kernel(vcpu
->kvm
)) {
440 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
441 kvm_vcpu_block(vcpu
);
442 hrtimer_cancel(p_ht
);
443 vcpu
->arch
.ht_active
= 0;
445 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_RUNNABLE
)
449 printk(KERN_ERR
"kvm: Unsupported userspace halt!");
454 static int handle_vm_shutdown(struct kvm_vcpu
*vcpu
,
455 struct kvm_run
*kvm_run
)
457 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
461 static int handle_external_interrupt(struct kvm_vcpu
*vcpu
,
462 struct kvm_run
*kvm_run
)
467 static int (*kvm_vti_exit_handlers
[])(struct kvm_vcpu
*vcpu
,
468 struct kvm_run
*kvm_run
) = {
469 [EXIT_REASON_VM_PANIC
] = handle_vm_error
,
470 [EXIT_REASON_MMIO_INSTRUCTION
] = handle_mmio
,
471 [EXIT_REASON_PAL_CALL
] = handle_pal_call
,
472 [EXIT_REASON_SAL_CALL
] = handle_sal_call
,
473 [EXIT_REASON_SWITCH_RR6
] = handle_switch_rr6
,
474 [EXIT_REASON_VM_DESTROY
] = handle_vm_shutdown
,
475 [EXIT_REASON_EXTERNAL_INTERRUPT
] = handle_external_interrupt
,
476 [EXIT_REASON_IPI
] = handle_ipi
,
477 [EXIT_REASON_PTC_G
] = handle_global_purge
,
481 static const int kvm_vti_max_exit_handlers
=
482 sizeof(kvm_vti_exit_handlers
)/sizeof(*kvm_vti_exit_handlers
);
484 static void kvm_prepare_guest_switch(struct kvm_vcpu
*vcpu
)
488 static uint32_t kvm_get_exit_reason(struct kvm_vcpu
*vcpu
)
490 struct exit_ctl_data
*p_exit_data
;
492 p_exit_data
= kvm_get_exit_data(vcpu
);
493 return p_exit_data
->exit_reason
;
497 * The guest has exited. See if we can fix it or if we need userspace
500 static int kvm_handle_exit(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
502 u32 exit_reason
= kvm_get_exit_reason(vcpu
);
503 vcpu
->arch
.last_exit
= exit_reason
;
505 if (exit_reason
< kvm_vti_max_exit_handlers
506 && kvm_vti_exit_handlers
[exit_reason
])
507 return kvm_vti_exit_handlers
[exit_reason
](vcpu
, kvm_run
);
509 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
510 kvm_run
->hw
.hardware_exit_reason
= exit_reason
;
515 static inline void vti_set_rr6(unsigned long rr6
)
517 ia64_set_rr(RR6
, rr6
);
521 static int kvm_insert_vmm_mapping(struct kvm_vcpu
*vcpu
)
524 struct kvm
*kvm
= vcpu
->kvm
;
527 /*Insert a pair of tr to map vmm*/
528 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
), PAGE_KERNEL
));
529 r
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
532 vcpu
->arch
.vmm_tr_slot
= r
;
533 /*Insert a pairt of tr to map data of vm*/
534 pte
= pte_val(mk_pte_phys(__pa(kvm
->arch
.vm_base
), PAGE_KERNEL
));
535 r
= ia64_itr_entry(0x3, KVM_VM_DATA_BASE
,
536 pte
, KVM_VM_DATA_SHIFT
);
539 vcpu
->arch
.vm_tr_slot
= r
;
546 static void kvm_purge_vmm_mapping(struct kvm_vcpu
*vcpu
)
549 ia64_ptr_entry(0x3, vcpu
->arch
.vmm_tr_slot
);
550 ia64_ptr_entry(0x3, vcpu
->arch
.vm_tr_slot
);
554 static int kvm_vcpu_pre_transition(struct kvm_vcpu
*vcpu
)
556 int cpu
= smp_processor_id();
558 if (vcpu
->arch
.last_run_cpu
!= cpu
||
559 per_cpu(last_vcpu
, cpu
) != vcpu
) {
560 per_cpu(last_vcpu
, cpu
) = vcpu
;
561 vcpu
->arch
.last_run_cpu
= cpu
;
565 vcpu
->arch
.host_rr6
= ia64_get_rr(RR6
);
566 vti_set_rr6(vcpu
->arch
.vmm_rr
);
567 return kvm_insert_vmm_mapping(vcpu
);
569 static void kvm_vcpu_post_transition(struct kvm_vcpu
*vcpu
)
571 kvm_purge_vmm_mapping(vcpu
);
572 vti_set_rr6(vcpu
->arch
.host_rr6
);
575 static int vti_vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
577 union context
*host_ctx
, *guest_ctx
;
580 /*Get host and guest context with guest address space.*/
581 host_ctx
= kvm_get_host_context(vcpu
);
582 guest_ctx
= kvm_get_guest_context(vcpu
);
584 r
= kvm_vcpu_pre_transition(vcpu
);
587 kvm_vmm_info
->tramp_entry(host_ctx
, guest_ctx
);
588 kvm_vcpu_post_transition(vcpu
);
594 static int __vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
601 kvm_prepare_guest_switch(vcpu
);
604 if (signal_pending(current
)) {
608 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
612 vcpu
->guest_mode
= 1;
615 r
= vti_vcpu_run(vcpu
, kvm_run
);
619 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
623 vcpu
->arch
.launched
= 1;
624 vcpu
->guest_mode
= 0;
628 * We must have an instruction between local_irq_enable() and
629 * kvm_guest_exit(), so the timer interrupt isn't delayed by
630 * the interrupt shadow. The stat.exits increment will do nicely.
631 * But we need to prevent reordering, hence this barrier():
639 r
= kvm_handle_exit(kvm_run
, vcpu
);
655 static void kvm_set_mmio_data(struct kvm_vcpu
*vcpu
)
657 struct kvm_mmio_req
*p
= kvm_get_vcpu_ioreq(vcpu
);
659 if (!vcpu
->mmio_is_write
)
660 memcpy(&p
->data
, vcpu
->mmio_data
, 8);
661 p
->state
= STATE_IORESP_READY
;
664 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
671 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
672 kvm_vcpu_block(vcpu
);
677 if (vcpu
->sigset_active
)
678 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
680 if (vcpu
->mmio_needed
) {
681 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
682 kvm_set_mmio_data(vcpu
);
683 vcpu
->mmio_read_completed
= 1;
684 vcpu
->mmio_needed
= 0;
686 r
= __vcpu_run(vcpu
, kvm_run
);
688 if (vcpu
->sigset_active
)
689 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
696 * Allocate 16M memory for every vm to hold its specific data.
697 * Its memory map is defined in kvm_host.h.
699 static struct kvm
*kvm_alloc_kvm(void)
705 vm_base
= __get_free_pages(GFP_KERNEL
, get_order(KVM_VM_DATA_SIZE
));
708 return ERR_PTR(-ENOMEM
);
709 printk(KERN_DEBUG
"kvm: VM data's base Address:0x%lx\n", vm_base
);
711 /* Zero all pages before use! */
712 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
714 kvm
= (struct kvm
*)(vm_base
+ KVM_VM_OFS
);
715 kvm
->arch
.vm_base
= vm_base
;
720 struct kvm_io_range
{
726 static const struct kvm_io_range io_ranges
[] = {
727 {VGA_IO_START
, VGA_IO_SIZE
, GPFN_FRAME_BUFFER
},
728 {MMIO_START
, MMIO_SIZE
, GPFN_LOW_MMIO
},
729 {LEGACY_IO_START
, LEGACY_IO_SIZE
, GPFN_LEGACY_IO
},
730 {IO_SAPIC_START
, IO_SAPIC_SIZE
, GPFN_IOSAPIC
},
731 {PIB_START
, PIB_SIZE
, GPFN_PIB
},
734 static void kvm_build_io_pmt(struct kvm
*kvm
)
738 /* Mark I/O ranges */
739 for (i
= 0; i
< (sizeof(io_ranges
) / sizeof(struct kvm_io_range
));
741 for (j
= io_ranges
[i
].start
;
742 j
< io_ranges
[i
].start
+ io_ranges
[i
].size
;
744 kvm_set_pmt_entry(kvm
, j
>> PAGE_SHIFT
,
745 io_ranges
[i
].type
, 0);
750 /*Use unused rids to virtualize guest rid.*/
751 #define GUEST_PHYSICAL_RR0 0x1739
752 #define GUEST_PHYSICAL_RR4 0x2739
753 #define VMM_INIT_RR 0x1660
755 static void kvm_init_vm(struct kvm
*kvm
)
761 kvm
->arch
.metaphysical_rr0
= GUEST_PHYSICAL_RR0
;
762 kvm
->arch
.metaphysical_rr4
= GUEST_PHYSICAL_RR4
;
763 kvm
->arch
.vmm_init_rr
= VMM_INIT_RR
;
765 vm_base
= kvm
->arch
.vm_base
;
767 kvm
->arch
.vhpt_base
= vm_base
+ KVM_VHPT_OFS
;
768 kvm
->arch
.vtlb_base
= vm_base
+ KVM_VTLB_OFS
;
769 kvm
->arch
.vpd_base
= vm_base
+ KVM_VPD_OFS
;
773 *Fill P2M entries for MMIO/IO ranges
775 kvm_build_io_pmt(kvm
);
779 struct kvm
*kvm_arch_create_vm(void)
781 struct kvm
*kvm
= kvm_alloc_kvm();
784 return ERR_PTR(-ENOMEM
);
791 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
,
792 struct kvm_irqchip
*chip
)
797 switch (chip
->chip_id
) {
798 case KVM_IRQCHIP_IOAPIC
:
799 memcpy(&chip
->chip
.ioapic
, ioapic_irqchip(kvm
),
800 sizeof(struct kvm_ioapic_state
));
809 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
814 switch (chip
->chip_id
) {
815 case KVM_IRQCHIP_IOAPIC
:
816 memcpy(ioapic_irqchip(kvm
),
818 sizeof(struct kvm_ioapic_state
));
827 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
829 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
832 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
837 for (i
= 0; i
< 16; i
++) {
838 vpd
->vgr
[i
] = regs
->vpd
.vgr
[i
];
839 vpd
->vbgr
[i
] = regs
->vpd
.vbgr
[i
];
841 for (i
= 0; i
< 128; i
++)
842 vpd
->vcr
[i
] = regs
->vpd
.vcr
[i
];
843 vpd
->vhpi
= regs
->vpd
.vhpi
;
844 vpd
->vnat
= regs
->vpd
.vnat
;
845 vpd
->vbnat
= regs
->vpd
.vbnat
;
846 vpd
->vpsr
= regs
->vpd
.vpsr
;
848 vpd
->vpr
= regs
->vpd
.vpr
;
851 r
= copy_from_user(&vcpu
->arch
.guest
, regs
->saved_guest
,
852 sizeof(union context
));
855 r
= copy_from_user(vcpu
+ 1, regs
->saved_stack
+
856 sizeof(struct kvm_vcpu
),
857 IA64_STK_OFFSET
- sizeof(struct kvm_vcpu
));
860 vcpu
->arch
.exit_data
=
861 ((struct kvm_vcpu
*)(regs
->saved_stack
))->arch
.exit_data
;
863 RESTORE_REGS(mp_state
);
864 RESTORE_REGS(vmm_rr
);
865 memcpy(vcpu
->arch
.itrs
, regs
->itrs
, sizeof(struct thash_data
) * NITRS
);
866 memcpy(vcpu
->arch
.dtrs
, regs
->dtrs
, sizeof(struct thash_data
) * NDTRS
);
867 RESTORE_REGS(itr_regions
);
868 RESTORE_REGS(dtr_regions
);
869 RESTORE_REGS(tc_regions
);
870 RESTORE_REGS(irq_check
);
871 RESTORE_REGS(itc_check
);
872 RESTORE_REGS(timer_check
);
873 RESTORE_REGS(timer_pending
);
874 RESTORE_REGS(last_itc
);
875 for (i
= 0; i
< 8; i
++) {
876 vcpu
->arch
.vrr
[i
] = regs
->vrr
[i
];
877 vcpu
->arch
.ibr
[i
] = regs
->ibr
[i
];
878 vcpu
->arch
.dbr
[i
] = regs
->dbr
[i
];
880 for (i
= 0; i
< 4; i
++)
881 vcpu
->arch
.insvc
[i
] = regs
->insvc
[i
];
883 RESTORE_REGS(metaphysical_rr0
);
884 RESTORE_REGS(metaphysical_rr4
);
885 RESTORE_REGS(metaphysical_saved_rr0
);
886 RESTORE_REGS(metaphysical_saved_rr4
);
887 RESTORE_REGS(fp_psr
);
888 RESTORE_REGS(saved_gp
);
890 vcpu
->arch
.irq_new_pending
= 1;
891 vcpu
->arch
.itc_offset
= regs
->saved_itc
- ia64_getreg(_IA64_REG_AR_ITC
);
892 set_bit(KVM_REQ_RESUME
, &vcpu
->requests
);
900 long kvm_arch_vm_ioctl(struct file
*filp
,
901 unsigned int ioctl
, unsigned long arg
)
903 struct kvm
*kvm
= filp
->private_data
;
904 void __user
*argp
= (void __user
*)arg
;
908 case KVM_SET_MEMORY_REGION
: {
909 struct kvm_memory_region kvm_mem
;
910 struct kvm_userspace_memory_region kvm_userspace_mem
;
913 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
915 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
916 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
917 kvm_userspace_mem
.guest_phys_addr
=
918 kvm_mem
.guest_phys_addr
;
919 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
920 r
= kvm_vm_ioctl_set_memory_region(kvm
,
921 &kvm_userspace_mem
, 0);
926 case KVM_CREATE_IRQCHIP
:
928 r
= kvm_ioapic_init(kvm
);
933 struct kvm_irq_level irq_event
;
936 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
938 if (irqchip_in_kernel(kvm
)) {
939 mutex_lock(&kvm
->lock
);
940 kvm_ioapic_set_irq(kvm
->arch
.vioapic
,
943 mutex_unlock(&kvm
->lock
);
948 case KVM_GET_IRQCHIP
: {
949 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
950 struct kvm_irqchip chip
;
953 if (copy_from_user(&chip
, argp
, sizeof chip
))
956 if (!irqchip_in_kernel(kvm
))
958 r
= kvm_vm_ioctl_get_irqchip(kvm
, &chip
);
962 if (copy_to_user(argp
, &chip
, sizeof chip
))
967 case KVM_SET_IRQCHIP
: {
968 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
969 struct kvm_irqchip chip
;
972 if (copy_from_user(&chip
, argp
, sizeof chip
))
975 if (!irqchip_in_kernel(kvm
))
977 r
= kvm_vm_ioctl_set_irqchip(kvm
, &chip
);
990 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
991 struct kvm_sregs
*sregs
)
996 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
997 struct kvm_sregs
*sregs
)
1002 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1003 struct kvm_translation
*tr
)
1009 static int kvm_alloc_vmm_area(void)
1011 if (!kvm_vmm_base
&& (kvm_vm_buffer_size
< KVM_VM_BUFFER_SIZE
)) {
1012 kvm_vmm_base
= __get_free_pages(GFP_KERNEL
,
1013 get_order(KVM_VMM_SIZE
));
1017 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1018 kvm_vm_buffer
= kvm_vmm_base
+ VMM_SIZE
;
1020 printk(KERN_DEBUG
"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1021 kvm_vmm_base
, kvm_vm_buffer
);
1027 static void kvm_free_vmm_area(void)
1030 /*Zero this area before free to avoid bits leak!!*/
1031 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1032 free_pages(kvm_vmm_base
, get_order(KVM_VMM_SIZE
));
1040 * Make sure that a cpu that is being hot-unplugged does not have any vcpus
1041 * cached on it. Leave it as blank for IA64.
1043 void decache_vcpus_on_cpu(int cpu
)
1047 static void vti_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1051 static int vti_init_vpd(struct kvm_vcpu
*vcpu
)
1054 union cpuid3_t cpuid3
;
1055 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1058 return PTR_ERR(vpd
);
1061 for (i
= 0; i
< 5; i
++)
1062 vpd
->vcpuid
[i
] = ia64_get_cpuid(i
);
1064 /* Limit the CPUID number to 5 */
1065 cpuid3
.value
= vpd
->vcpuid
[3];
1066 cpuid3
.number
= 4; /* 5 - 1 */
1067 vpd
->vcpuid
[3] = cpuid3
.value
;
1069 /*Set vac and vdc fields*/
1070 vpd
->vac
.a_from_int_cr
= 1;
1071 vpd
->vac
.a_to_int_cr
= 1;
1072 vpd
->vac
.a_from_psr
= 1;
1073 vpd
->vac
.a_from_cpuid
= 1;
1074 vpd
->vac
.a_cover
= 1;
1077 vpd
->vdc
.d_vmsw
= 1;
1079 /*Set virtual buffer*/
1080 vpd
->virt_env_vaddr
= KVM_VM_BUFFER_BASE
;
1085 static int vti_create_vp(struct kvm_vcpu
*vcpu
)
1088 struct vpd
*vpd
= vcpu
->arch
.vpd
;
1089 unsigned long vmm_ivt
;
1091 vmm_ivt
= kvm_vmm_info
->vmm_ivt
;
1093 printk(KERN_DEBUG
"kvm: vcpu:%p,ivt: 0x%lx\n", vcpu
, vmm_ivt
);
1095 ret
= ia64_pal_vp_create((u64
*)vpd
, (u64
*)vmm_ivt
, 0);
1098 printk(KERN_ERR
"kvm: ia64_pal_vp_create failed!\n");
1104 static void init_ptce_info(struct kvm_vcpu
*vcpu
)
1106 ia64_ptce_info_t ptce
= {0};
1108 ia64_get_ptce(&ptce
);
1109 vcpu
->arch
.ptce_base
= ptce
.base
;
1110 vcpu
->arch
.ptce_count
[0] = ptce
.count
[0];
1111 vcpu
->arch
.ptce_count
[1] = ptce
.count
[1];
1112 vcpu
->arch
.ptce_stride
[0] = ptce
.stride
[0];
1113 vcpu
->arch
.ptce_stride
[1] = ptce
.stride
[1];
1116 static void kvm_migrate_hlt_timer(struct kvm_vcpu
*vcpu
)
1118 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
1120 if (hrtimer_cancel(p_ht
))
1121 hrtimer_start(p_ht
, p_ht
->expires
, HRTIMER_MODE_ABS
);
1124 static enum hrtimer_restart
hlt_timer_fn(struct hrtimer
*data
)
1126 struct kvm_vcpu
*vcpu
;
1127 wait_queue_head_t
*q
;
1129 vcpu
= container_of(data
, struct kvm_vcpu
, arch
.hlt_timer
);
1130 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_HALTED
)
1134 if (waitqueue_active(q
)) {
1135 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1136 wake_up_interruptible(q
);
1139 vcpu
->arch
.timer_check
= 1;
1140 return HRTIMER_NORESTART
;
1143 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1145 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
1151 struct kvm
*kvm
= vcpu
->kvm
;
1152 struct kvm_pt_regs
*regs
= vcpu_regs(vcpu
);
1154 union context
*p_ctx
= &vcpu
->arch
.guest
;
1155 struct kvm_vcpu
*vmm_vcpu
= to_guest(vcpu
->kvm
, vcpu
);
1157 /*Init vcpu context for first run.*/
1158 if (IS_ERR(vmm_vcpu
))
1159 return PTR_ERR(vmm_vcpu
);
1161 if (vcpu
->vcpu_id
== 0) {
1162 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1164 /*Set entry address for first run.*/
1165 regs
->cr_iip
= PALE_RESET_ENTRY
;
1167 /*Initilize itc offset for vcpus*/
1168 itc_offset
= 0UL - ia64_getreg(_IA64_REG_AR_ITC
);
1169 for (i
= 0; i
< MAX_VCPU_NUM
; i
++) {
1170 v
= (struct kvm_vcpu
*)((char *)vcpu
+ VCPU_SIZE
* i
);
1171 v
->arch
.itc_offset
= itc_offset
;
1172 v
->arch
.last_itc
= 0;
1175 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
1178 vcpu
->arch
.apic
= kzalloc(sizeof(struct kvm_lapic
), GFP_KERNEL
);
1179 if (!vcpu
->arch
.apic
)
1181 vcpu
->arch
.apic
->vcpu
= vcpu
;
1184 p_ctx
->gr
[12] = (unsigned long)((char *)vmm_vcpu
+ IA64_STK_OFFSET
);
1185 p_ctx
->gr
[13] = (unsigned long)vmm_vcpu
;
1186 p_ctx
->psr
= 0x1008522000UL
;
1187 p_ctx
->ar
[40] = FPSR_DEFAULT
; /*fpsr*/
1188 p_ctx
->caller_unat
= 0;
1190 p_ctx
->ar
[36] = 0x0; /*unat*/
1191 p_ctx
->ar
[19] = 0x0; /*rnat*/
1192 p_ctx
->ar
[18] = (unsigned long)vmm_vcpu
+
1193 ((sizeof(struct kvm_vcpu
)+15) & ~15);
1194 p_ctx
->ar
[64] = 0x0; /*pfs*/
1195 p_ctx
->cr
[0] = 0x7e04UL
;
1196 p_ctx
->cr
[2] = (unsigned long)kvm_vmm_info
->vmm_ivt
;
1197 p_ctx
->cr
[8] = 0x3c;
1199 /*Initilize region register*/
1200 p_ctx
->rr
[0] = 0x30;
1201 p_ctx
->rr
[1] = 0x30;
1202 p_ctx
->rr
[2] = 0x30;
1203 p_ctx
->rr
[3] = 0x30;
1204 p_ctx
->rr
[4] = 0x30;
1205 p_ctx
->rr
[5] = 0x30;
1206 p_ctx
->rr
[7] = 0x30;
1208 /*Initilize branch register 0*/
1209 p_ctx
->br
[0] = *(unsigned long *)kvm_vmm_info
->vmm_entry
;
1211 vcpu
->arch
.vmm_rr
= kvm
->arch
.vmm_init_rr
;
1212 vcpu
->arch
.metaphysical_rr0
= kvm
->arch
.metaphysical_rr0
;
1213 vcpu
->arch
.metaphysical_rr4
= kvm
->arch
.metaphysical_rr4
;
1215 hrtimer_init(&vcpu
->arch
.hlt_timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
1216 vcpu
->arch
.hlt_timer
.function
= hlt_timer_fn
;
1218 vcpu
->arch
.last_run_cpu
= -1;
1219 vcpu
->arch
.vpd
= (struct vpd
*)VPD_ADDR(vcpu
->vcpu_id
);
1220 vcpu
->arch
.vsa_base
= kvm_vsa_base
;
1221 vcpu
->arch
.__gp
= kvm_vmm_gp
;
1222 vcpu
->arch
.dirty_log_lock_pa
= __pa(&kvm
->arch
.dirty_log_lock
);
1223 vcpu
->arch
.vhpt
.hash
= (struct thash_data
*)VHPT_ADDR(vcpu
->vcpu_id
);
1224 vcpu
->arch
.vtlb
.hash
= (struct thash_data
*)VTLB_ADDR(vcpu
->vcpu_id
);
1225 init_ptce_info(vcpu
);
1232 static int vti_vcpu_setup(struct kvm_vcpu
*vcpu
, int id
)
1237 local_irq_save(psr
);
1238 r
= kvm_insert_vmm_mapping(vcpu
);
1241 r
= kvm_vcpu_init(vcpu
, vcpu
->kvm
, id
);
1245 r
= vti_init_vpd(vcpu
);
1247 printk(KERN_DEBUG
"kvm: vpd init error!!\n");
1251 r
= vti_create_vp(vcpu
);
1255 kvm_purge_vmm_mapping(vcpu
);
1256 local_irq_restore(psr
);
1260 kvm_vcpu_uninit(vcpu
);
1265 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
1268 struct kvm_vcpu
*vcpu
;
1269 unsigned long vm_base
= kvm
->arch
.vm_base
;
1275 printk(KERN_ERR
"kvm: Create vcpu[%d] error!\n", id
);
1278 vcpu
= (struct kvm_vcpu
*)(vm_base
+ KVM_VCPU_OFS
+ VCPU_SIZE
* id
);
1282 vti_vcpu_load(vcpu
, cpu
);
1283 r
= vti_vcpu_setup(vcpu
, id
);
1287 printk(KERN_DEBUG
"kvm: vcpu_setup error!!\n");
1296 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1301 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1306 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1311 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
1312 struct kvm_debug_guest
*dbg
)
1317 static void free_kvm(struct kvm
*kvm
)
1319 unsigned long vm_base
= kvm
->arch
.vm_base
;
1322 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
1323 free_pages(vm_base
, get_order(KVM_VM_DATA_SIZE
));
1328 static void kvm_release_vm_pages(struct kvm
*kvm
)
1330 struct kvm_memory_slot
*memslot
;
1332 unsigned long base_gfn
;
1334 for (i
= 0; i
< kvm
->nmemslots
; i
++) {
1335 memslot
= &kvm
->memslots
[i
];
1336 base_gfn
= memslot
->base_gfn
;
1338 for (j
= 0; j
< memslot
->npages
; j
++) {
1339 if (memslot
->rmap
[j
])
1340 put_page((struct page
*)memslot
->rmap
[j
]);
1345 void kvm_arch_destroy_vm(struct kvm
*kvm
)
1347 kfree(kvm
->arch
.vioapic
);
1348 kvm_release_vm_pages(kvm
);
1349 kvm_free_physmem(kvm
);
1353 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1357 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1359 if (cpu
!= vcpu
->cpu
) {
1361 if (vcpu
->arch
.ht_active
)
1362 kvm_migrate_hlt_timer(vcpu
);
1366 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1368 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1372 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1375 for (i
= 0; i
< 16; i
++) {
1376 regs
->vpd
.vgr
[i
] = vpd
->vgr
[i
];
1377 regs
->vpd
.vbgr
[i
] = vpd
->vbgr
[i
];
1379 for (i
= 0; i
< 128; i
++)
1380 regs
->vpd
.vcr
[i
] = vpd
->vcr
[i
];
1381 regs
->vpd
.vhpi
= vpd
->vhpi
;
1382 regs
->vpd
.vnat
= vpd
->vnat
;
1383 regs
->vpd
.vbnat
= vpd
->vbnat
;
1384 regs
->vpd
.vpsr
= vpd
->vpsr
;
1385 regs
->vpd
.vpr
= vpd
->vpr
;
1388 r
= copy_to_user(regs
->saved_guest
, &vcpu
->arch
.guest
,
1389 sizeof(union context
));
1392 r
= copy_to_user(regs
->saved_stack
, (void *)vcpu
, IA64_STK_OFFSET
);
1395 SAVE_REGS(mp_state
);
1397 memcpy(regs
->itrs
, vcpu
->arch
.itrs
, sizeof(struct thash_data
) * NITRS
);
1398 memcpy(regs
->dtrs
, vcpu
->arch
.dtrs
, sizeof(struct thash_data
) * NDTRS
);
1399 SAVE_REGS(itr_regions
);
1400 SAVE_REGS(dtr_regions
);
1401 SAVE_REGS(tc_regions
);
1402 SAVE_REGS(irq_check
);
1403 SAVE_REGS(itc_check
);
1404 SAVE_REGS(timer_check
);
1405 SAVE_REGS(timer_pending
);
1406 SAVE_REGS(last_itc
);
1407 for (i
= 0; i
< 8; i
++) {
1408 regs
->vrr
[i
] = vcpu
->arch
.vrr
[i
];
1409 regs
->ibr
[i
] = vcpu
->arch
.ibr
[i
];
1410 regs
->dbr
[i
] = vcpu
->arch
.dbr
[i
];
1412 for (i
= 0; i
< 4; i
++)
1413 regs
->insvc
[i
] = vcpu
->arch
.insvc
[i
];
1414 regs
->saved_itc
= vcpu
->arch
.itc_offset
+ ia64_getreg(_IA64_REG_AR_ITC
);
1416 SAVE_REGS(metaphysical_rr0
);
1417 SAVE_REGS(metaphysical_rr4
);
1418 SAVE_REGS(metaphysical_saved_rr0
);
1419 SAVE_REGS(metaphysical_saved_rr4
);
1421 SAVE_REGS(saved_gp
);
1428 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1431 hrtimer_cancel(&vcpu
->arch
.hlt_timer
);
1432 kfree(vcpu
->arch
.apic
);
1436 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1437 unsigned int ioctl
, unsigned long arg
)
1442 int kvm_arch_set_memory_region(struct kvm
*kvm
,
1443 struct kvm_userspace_memory_region
*mem
,
1444 struct kvm_memory_slot old
,
1449 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
1450 struct kvm_memory_slot
*memslot
= &kvm
->memslots
[mem
->slot
];
1451 unsigned long base_gfn
= memslot
->base_gfn
;
1453 for (i
= 0; i
< npages
; i
++) {
1454 page
= gfn_to_page(kvm
, base_gfn
+ i
);
1455 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1456 page_to_pfn(page
) << PAGE_SHIFT
,
1457 _PAGE_AR_RWX
|_PAGE_MA_WB
);
1458 memslot
->rmap
[i
] = (unsigned long)page
;
1465 long kvm_arch_dev_ioctl(struct file
*filp
,
1466 unsigned int ioctl
, unsigned long arg
)
1471 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
1473 kvm_vcpu_uninit(vcpu
);
1476 static int vti_cpu_has_kvm_support(void)
1478 long avail
= 1, status
= 1, control
= 1;
1481 ret
= ia64_pal_proc_get_features(&avail
, &status
, &control
, 0);
1485 if (!(avail
& PAL_PROC_VM_BIT
))
1488 printk(KERN_DEBUG
"kvm: Hardware Supports VT\n");
1490 ret
= ia64_pal_vp_env_info(&kvm_vm_buffer_size
, &vp_env_info
);
1493 printk(KERN_DEBUG
"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size
);
1495 if (!(vp_env_info
& VP_OPCODE
)) {
1496 printk(KERN_WARNING
"kvm: No opcode ability on hardware, "
1497 "vm_env_info:0x%lx\n", vp_env_info
);
1505 static int kvm_relocate_vmm(struct kvm_vmm_info
*vmm_info
,
1506 struct module
*module
)
1508 unsigned long module_base
;
1509 unsigned long vmm_size
;
1511 unsigned long vmm_offset
, func_offset
, fdesc_offset
;
1512 struct fdesc
*p_fdesc
;
1516 if (!kvm_vmm_base
) {
1517 printk("kvm: kvm area hasn't been initilized yet!!\n");
1521 /*Calculate new position of relocated vmm module.*/
1522 module_base
= (unsigned long)module
->module_core
;
1523 vmm_size
= module
->core_size
;
1524 if (unlikely(vmm_size
> KVM_VMM_SIZE
))
1527 memcpy((void *)kvm_vmm_base
, (void *)module_base
, vmm_size
);
1528 kvm_flush_icache(kvm_vmm_base
, vmm_size
);
1530 /*Recalculate kvm_vmm_info based on new VMM*/
1531 vmm_offset
= vmm_info
->vmm_ivt
- module_base
;
1532 kvm_vmm_info
->vmm_ivt
= KVM_VMM_BASE
+ vmm_offset
;
1533 printk(KERN_DEBUG
"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1534 kvm_vmm_info
->vmm_ivt
);
1536 fdesc_offset
= (unsigned long)vmm_info
->vmm_entry
- module_base
;
1537 kvm_vmm_info
->vmm_entry
= (kvm_vmm_entry
*)(KVM_VMM_BASE
+
1539 func_offset
= *(unsigned long *)vmm_info
->vmm_entry
- module_base
;
1540 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1541 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1542 p_fdesc
->gp
= KVM_VMM_BASE
+(p_fdesc
->gp
- module_base
);
1544 printk(KERN_DEBUG
"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1545 KVM_VMM_BASE
+func_offset
);
1547 fdesc_offset
= (unsigned long)vmm_info
->tramp_entry
- module_base
;
1548 kvm_vmm_info
->tramp_entry
= (kvm_tramp_entry
*)(KVM_VMM_BASE
+
1550 func_offset
= *(unsigned long *)vmm_info
->tramp_entry
- module_base
;
1551 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1552 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1553 p_fdesc
->gp
= KVM_VMM_BASE
+ (p_fdesc
->gp
- module_base
);
1555 kvm_vmm_gp
= p_fdesc
->gp
;
1557 printk(KERN_DEBUG
"kvm: Relocated VMM's Entry IP:%p\n",
1558 kvm_vmm_info
->vmm_entry
);
1559 printk(KERN_DEBUG
"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1560 KVM_VMM_BASE
+ func_offset
);
1565 int kvm_arch_init(void *opaque
)
1568 struct kvm_vmm_info
*vmm_info
= (struct kvm_vmm_info
*)opaque
;
1570 if (!vti_cpu_has_kvm_support()) {
1571 printk(KERN_ERR
"kvm: No Hardware Virtualization Support!\n");
1577 printk(KERN_ERR
"kvm: Already loaded VMM module!\n");
1583 kvm_vmm_info
= kzalloc(sizeof(struct kvm_vmm_info
), GFP_KERNEL
);
1587 if (kvm_alloc_vmm_area())
1590 r
= kvm_relocate_vmm(vmm_info
, vmm_info
->module
);
1597 kvm_free_vmm_area();
1599 kfree(kvm_vmm_info
);
1604 void kvm_arch_exit(void)
1606 kvm_free_vmm_area();
1607 kfree(kvm_vmm_info
);
1608 kvm_vmm_info
= NULL
;
1611 static int kvm_ia64_sync_dirty_log(struct kvm
*kvm
,
1612 struct kvm_dirty_log
*log
)
1614 struct kvm_memory_slot
*memslot
;
1617 unsigned long *dirty_bitmap
= (unsigned long *)((void *)kvm
- KVM_VM_OFS
1618 + KVM_MEM_DIRTY_LOG_OFS
);
1621 if (log
->slot
>= KVM_MEMORY_SLOTS
)
1624 memslot
= &kvm
->memslots
[log
->slot
];
1626 if (!memslot
->dirty_bitmap
)
1629 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1630 base
= memslot
->base_gfn
/ BITS_PER_LONG
;
1632 for (i
= 0; i
< n
/sizeof(long); ++i
) {
1633 memslot
->dirty_bitmap
[i
] = dirty_bitmap
[base
+ i
];
1634 dirty_bitmap
[base
+ i
] = 0;
1641 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
1642 struct kvm_dirty_log
*log
)
1646 struct kvm_memory_slot
*memslot
;
1649 spin_lock(&kvm
->arch
.dirty_log_lock
);
1651 r
= kvm_ia64_sync_dirty_log(kvm
, log
);
1655 r
= kvm_get_dirty_log(kvm
, log
, &is_dirty
);
1659 /* If nothing is dirty, don't bother messing with page tables. */
1661 kvm_flush_remote_tlbs(kvm
);
1662 memslot
= &kvm
->memslots
[log
->slot
];
1663 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1664 memset(memslot
->dirty_bitmap
, 0, n
);
1668 spin_unlock(&kvm
->arch
.dirty_log_lock
);
1672 int kvm_arch_hardware_setup(void)
1677 void kvm_arch_hardware_unsetup(void)
1681 static void vcpu_kick_intr(void *info
)
1684 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)info
;
1685 printk(KERN_DEBUG
"vcpu_kick_intr %p \n", vcpu
);
1689 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
1691 int ipi_pcpu
= vcpu
->cpu
;
1693 if (waitqueue_active(&vcpu
->wq
))
1694 wake_up_interruptible(&vcpu
->wq
);
1696 if (vcpu
->guest_mode
)
1697 smp_call_function_single(ipi_pcpu
, vcpu_kick_intr
, vcpu
, 0, 0);
1700 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, u8 vec
, u8 trig
)
1703 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1705 if (!test_and_set_bit(vec
, &vpd
->irr
[0])) {
1706 vcpu
->arch
.irq_new_pending
= 1;
1707 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
)
1708 kvm_vcpu_kick(vcpu
);
1709 else if (vcpu
->arch
.mp_state
== KVM_MP_STATE_HALTED
) {
1710 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1711 if (waitqueue_active(&vcpu
->wq
))
1712 wake_up_interruptible(&vcpu
->wq
);
1719 int kvm_apic_match_physical_addr(struct kvm_lapic
*apic
, u16 dest
)
1721 return apic
->vcpu
->vcpu_id
== dest
;
1724 int kvm_apic_match_logical_addr(struct kvm_lapic
*apic
, u8 mda
)
1729 struct kvm_vcpu
*kvm_get_lowest_prio_vcpu(struct kvm
*kvm
, u8 vector
,
1730 unsigned long bitmap
)
1732 struct kvm_vcpu
*lvcpu
= kvm
->vcpus
[0];
1735 for (i
= 1; i
< KVM_MAX_VCPUS
; i
++) {
1738 if (lvcpu
->arch
.xtp
> kvm
->vcpus
[i
]->arch
.xtp
)
1739 lvcpu
= kvm
->vcpus
[i
];
1745 static int find_highest_bits(int *dat
)
1750 /* loop for all 256 bits */
1751 for (i
= 7; i
>= 0 ; i
--) {
1755 return i
* 32 + bitnum
- 1;
1762 int kvm_highest_pending_irq(struct kvm_vcpu
*vcpu
)
1764 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1766 if (vpd
->irr
[0] & (1UL << NMI_VECTOR
))
1768 if (vpd
->irr
[0] & (1UL << ExtINT_VECTOR
))
1769 return ExtINT_VECTOR
;
1771 return find_highest_bits((int *)&vpd
->irr
[0]);
1774 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
)
1776 if (kvm_highest_pending_irq(vcpu
) != -1)
1781 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
1786 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
1791 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
1793 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
;
1796 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1797 struct kvm_mp_state
*mp_state
)
1802 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1803 struct kvm_mp_state
*mp_state
)