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>
48 static unsigned long kvm_vmm_base
;
49 static unsigned long kvm_vsa_base
;
50 static unsigned long kvm_vm_buffer
;
51 static unsigned long kvm_vm_buffer_size
;
52 unsigned long kvm_vmm_gp
;
54 static long vp_env_info
;
56 static struct kvm_vmm_info
*kvm_vmm_info
;
58 static DEFINE_PER_CPU(struct kvm_vcpu
*, last_vcpu
);
60 struct kvm_stats_debugfs_item debugfs_entries
[] = {
70 static void kvm_flush_icache(unsigned long start
, unsigned long len
)
74 for (l
= 0; l
< (len
+ 32); l
+= 32)
81 static void kvm_flush_tlb_all(void)
83 unsigned long i
, j
, count0
, count1
, stride0
, stride1
, addr
;
86 addr
= local_cpu_data
->ptce_base
;
87 count0
= local_cpu_data
->ptce_count
[0];
88 count1
= local_cpu_data
->ptce_count
[1];
89 stride0
= local_cpu_data
->ptce_stride
[0];
90 stride1
= local_cpu_data
->ptce_stride
[1];
92 local_irq_save(flags
);
93 for (i
= 0; i
< count0
; ++i
) {
94 for (j
= 0; j
< count1
; ++j
) {
100 local_irq_restore(flags
);
101 ia64_srlz_i(); /* srlz.i implies srlz.d */
104 long ia64_pal_vp_create(u64
*vpd
, u64
*host_iva
, u64
*opt_handler
)
106 struct ia64_pal_retval iprv
;
108 PAL_CALL_STK(iprv
, PAL_VP_CREATE
, (u64
)vpd
, (u64
)host_iva
,
114 static DEFINE_SPINLOCK(vp_lock
);
116 void kvm_arch_hardware_enable(void *garbage
)
121 unsigned long saved_psr
;
124 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
126 local_irq_save(saved_psr
);
127 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
130 local_irq_restore(saved_psr
);
133 status
= ia64_pal_vp_init_env(kvm_vsa_base
?
134 VP_INIT_ENV
: VP_INIT_ENV_INITALIZE
,
135 __pa(kvm_vm_buffer
), KVM_VM_BUFFER_BASE
, &tmp_base
);
137 printk(KERN_WARNING
"kvm: Failed to Enable VT Support!!!!\n");
142 kvm_vsa_base
= tmp_base
;
143 printk(KERN_INFO
"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base
);
145 spin_unlock(&vp_lock
);
146 ia64_ptr_entry(0x3, slot
);
149 void kvm_arch_hardware_disable(void *garbage
)
155 unsigned long saved_psr
;
156 unsigned long host_iva
= ia64_getreg(_IA64_REG_CR_IVA
);
158 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
161 local_irq_save(saved_psr
);
162 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
165 local_irq_restore(saved_psr
);
167 status
= ia64_pal_vp_exit_env(host_iva
);
169 printk(KERN_DEBUG
"kvm: Failed to disable VT support! :%ld\n",
171 ia64_ptr_entry(0x3, slot
);
174 void kvm_arch_check_processor_compat(void *rtn
)
179 int kvm_dev_ioctl_check_extension(long ext
)
185 case KVM_CAP_IRQCHIP
:
186 case KVM_CAP_USER_MEMORY
:
190 case KVM_CAP_COALESCED_MMIO
:
191 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
200 static struct kvm_io_device
*vcpu_find_mmio_dev(struct kvm_vcpu
*vcpu
,
201 gpa_t addr
, int len
, int is_write
)
203 struct kvm_io_device
*dev
;
205 dev
= kvm_io_bus_find_dev(&vcpu
->kvm
->mmio_bus
, addr
, len
, is_write
);
210 static int handle_vm_error(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
212 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
213 kvm_run
->hw
.hardware_exit_reason
= 1;
217 static int handle_mmio(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
219 struct kvm_mmio_req
*p
;
220 struct kvm_io_device
*mmio_dev
;
222 p
= kvm_get_vcpu_ioreq(vcpu
);
224 if ((p
->addr
& PAGE_MASK
) == IOAPIC_DEFAULT_BASE_ADDRESS
)
226 vcpu
->mmio_needed
= 1;
227 vcpu
->mmio_phys_addr
= kvm_run
->mmio
.phys_addr
= p
->addr
;
228 vcpu
->mmio_size
= kvm_run
->mmio
.len
= p
->size
;
229 vcpu
->mmio_is_write
= kvm_run
->mmio
.is_write
= !p
->dir
;
231 if (vcpu
->mmio_is_write
)
232 memcpy(vcpu
->mmio_data
, &p
->data
, p
->size
);
233 memcpy(kvm_run
->mmio
.data
, &p
->data
, p
->size
);
234 kvm_run
->exit_reason
= KVM_EXIT_MMIO
;
237 mmio_dev
= vcpu_find_mmio_dev(vcpu
, p
->addr
, p
->size
, !p
->dir
);
240 kvm_iodevice_write(mmio_dev
, p
->addr
, p
->size
,
243 kvm_iodevice_read(mmio_dev
, p
->addr
, p
->size
,
247 printk(KERN_ERR
"kvm: No iodevice found! addr:%lx\n", p
->addr
);
248 p
->state
= STATE_IORESP_READY
;
253 static int handle_pal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
255 struct exit_ctl_data
*p
;
257 p
= kvm_get_exit_data(vcpu
);
259 if (p
->exit_reason
== EXIT_REASON_PAL_CALL
)
260 return kvm_pal_emul(vcpu
, kvm_run
);
262 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
263 kvm_run
->hw
.hardware_exit_reason
= 2;
268 static int handle_sal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
270 struct exit_ctl_data
*p
;
272 p
= kvm_get_exit_data(vcpu
);
274 if (p
->exit_reason
== EXIT_REASON_SAL_CALL
) {
278 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
279 kvm_run
->hw
.hardware_exit_reason
= 3;
286 * offset: address offset to IPI space.
287 * value: deliver value.
289 static void vcpu_deliver_ipi(struct kvm_vcpu
*vcpu
, uint64_t dm
,
294 kvm_apic_set_irq(vcpu
, vector
, 0);
297 kvm_apic_set_irq(vcpu
, 2, 0);
300 kvm_apic_set_irq(vcpu
, 0, 0);
305 printk(KERN_ERR
"kvm: Unimplemented Deliver reserved IPI!\n");
310 static struct kvm_vcpu
*lid_to_vcpu(struct kvm
*kvm
, unsigned long id
,
316 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
318 lid
.val
= VCPU_LID(kvm
->vcpus
[i
]);
319 if (lid
.id
== id
&& lid
.eid
== eid
)
320 return kvm
->vcpus
[i
];
327 static int handle_ipi(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
329 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
330 struct kvm_vcpu
*target_vcpu
;
331 struct kvm_pt_regs
*regs
;
332 union ia64_ipi_a addr
= p
->u
.ipi_data
.addr
;
333 union ia64_ipi_d data
= p
->u
.ipi_data
.data
;
335 target_vcpu
= lid_to_vcpu(vcpu
->kvm
, addr
.id
, addr
.eid
);
337 return handle_vm_error(vcpu
, kvm_run
);
339 if (!target_vcpu
->arch
.launched
) {
340 regs
= vcpu_regs(target_vcpu
);
342 regs
->cr_iip
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_ip
;
343 regs
->r1
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_gp
;
345 target_vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
346 if (waitqueue_active(&target_vcpu
->wq
))
347 wake_up_interruptible(&target_vcpu
->wq
);
349 vcpu_deliver_ipi(target_vcpu
, data
.dm
, data
.vector
);
350 if (target_vcpu
!= vcpu
)
351 kvm_vcpu_kick(target_vcpu
);
358 struct kvm_ptc_g ptc_g_data
;
359 struct kvm_vcpu
*vcpu
;
362 static void vcpu_global_purge(void *info
)
364 struct call_data
*p
= (struct call_data
*)info
;
365 struct kvm_vcpu
*vcpu
= p
->vcpu
;
367 if (test_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
))
370 set_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
371 if (vcpu
->arch
.ptc_g_count
< MAX_PTC_G_NUM
) {
372 vcpu
->arch
.ptc_g_data
[vcpu
->arch
.ptc_g_count
++] =
375 clear_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
376 vcpu
->arch
.ptc_g_count
= 0;
377 set_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
);
381 static int handle_global_purge(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
383 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
384 struct kvm
*kvm
= vcpu
->kvm
;
385 struct call_data call_data
;
387 call_data
.ptc_g_data
= p
->u
.ptc_g_data
;
389 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
390 if (!kvm
->vcpus
[i
] || kvm
->vcpus
[i
]->arch
.mp_state
==
391 KVM_MP_STATE_UNINITIALIZED
||
392 vcpu
== kvm
->vcpus
[i
])
395 if (waitqueue_active(&kvm
->vcpus
[i
]->wq
))
396 wake_up_interruptible(&kvm
->vcpus
[i
]->wq
);
398 if (kvm
->vcpus
[i
]->cpu
!= -1) {
399 call_data
.vcpu
= kvm
->vcpus
[i
];
400 smp_call_function_single(kvm
->vcpus
[i
]->cpu
,
401 vcpu_global_purge
, &call_data
, 1);
403 printk(KERN_WARNING
"kvm: Uninit vcpu received ipi!\n");
409 static int handle_switch_rr6(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
414 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
419 unsigned long vcpu_now_itc
;
421 unsigned long expires
;
422 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
423 unsigned long cyc_per_usec
= local_cpu_data
->cyc_per_usec
;
424 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
426 vcpu_now_itc
= ia64_getreg(_IA64_REG_AR_ITC
) + vcpu
->arch
.itc_offset
;
428 if (time_after(vcpu_now_itc
, vpd
->itm
)) {
429 vcpu
->arch
.timer_check
= 1;
432 itc_diff
= vpd
->itm
- vcpu_now_itc
;
434 itc_diff
= -itc_diff
;
436 expires
= div64_u64(itc_diff
, cyc_per_usec
);
437 kt
= ktime_set(0, 1000 * expires
);
438 vcpu
->arch
.ht_active
= 1;
439 hrtimer_start(p_ht
, kt
, HRTIMER_MODE_ABS
);
441 if (irqchip_in_kernel(vcpu
->kvm
)) {
442 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
443 kvm_vcpu_block(vcpu
);
444 hrtimer_cancel(p_ht
);
445 vcpu
->arch
.ht_active
= 0;
447 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_RUNNABLE
)
451 printk(KERN_ERR
"kvm: Unsupported userspace halt!");
456 static int handle_vm_shutdown(struct kvm_vcpu
*vcpu
,
457 struct kvm_run
*kvm_run
)
459 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
463 static int handle_external_interrupt(struct kvm_vcpu
*vcpu
,
464 struct kvm_run
*kvm_run
)
469 static int (*kvm_vti_exit_handlers
[])(struct kvm_vcpu
*vcpu
,
470 struct kvm_run
*kvm_run
) = {
471 [EXIT_REASON_VM_PANIC
] = handle_vm_error
,
472 [EXIT_REASON_MMIO_INSTRUCTION
] = handle_mmio
,
473 [EXIT_REASON_PAL_CALL
] = handle_pal_call
,
474 [EXIT_REASON_SAL_CALL
] = handle_sal_call
,
475 [EXIT_REASON_SWITCH_RR6
] = handle_switch_rr6
,
476 [EXIT_REASON_VM_DESTROY
] = handle_vm_shutdown
,
477 [EXIT_REASON_EXTERNAL_INTERRUPT
] = handle_external_interrupt
,
478 [EXIT_REASON_IPI
] = handle_ipi
,
479 [EXIT_REASON_PTC_G
] = handle_global_purge
,
483 static const int kvm_vti_max_exit_handlers
=
484 sizeof(kvm_vti_exit_handlers
)/sizeof(*kvm_vti_exit_handlers
);
486 static void kvm_prepare_guest_switch(struct kvm_vcpu
*vcpu
)
490 static uint32_t kvm_get_exit_reason(struct kvm_vcpu
*vcpu
)
492 struct exit_ctl_data
*p_exit_data
;
494 p_exit_data
= kvm_get_exit_data(vcpu
);
495 return p_exit_data
->exit_reason
;
499 * The guest has exited. See if we can fix it or if we need userspace
502 static int kvm_handle_exit(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
504 u32 exit_reason
= kvm_get_exit_reason(vcpu
);
505 vcpu
->arch
.last_exit
= exit_reason
;
507 if (exit_reason
< kvm_vti_max_exit_handlers
508 && kvm_vti_exit_handlers
[exit_reason
])
509 return kvm_vti_exit_handlers
[exit_reason
](vcpu
, kvm_run
);
511 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
512 kvm_run
->hw
.hardware_exit_reason
= exit_reason
;
517 static inline void vti_set_rr6(unsigned long rr6
)
519 ia64_set_rr(RR6
, rr6
);
523 static int kvm_insert_vmm_mapping(struct kvm_vcpu
*vcpu
)
526 struct kvm
*kvm
= vcpu
->kvm
;
529 /*Insert a pair of tr to map vmm*/
530 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
), PAGE_KERNEL
));
531 r
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
534 vcpu
->arch
.vmm_tr_slot
= r
;
535 /*Insert a pairt of tr to map data of vm*/
536 pte
= pte_val(mk_pte_phys(__pa(kvm
->arch
.vm_base
), PAGE_KERNEL
));
537 r
= ia64_itr_entry(0x3, KVM_VM_DATA_BASE
,
538 pte
, KVM_VM_DATA_SHIFT
);
541 vcpu
->arch
.vm_tr_slot
= r
;
548 static void kvm_purge_vmm_mapping(struct kvm_vcpu
*vcpu
)
551 ia64_ptr_entry(0x3, vcpu
->arch
.vmm_tr_slot
);
552 ia64_ptr_entry(0x3, vcpu
->arch
.vm_tr_slot
);
556 static int kvm_vcpu_pre_transition(struct kvm_vcpu
*vcpu
)
558 int cpu
= smp_processor_id();
560 if (vcpu
->arch
.last_run_cpu
!= cpu
||
561 per_cpu(last_vcpu
, cpu
) != vcpu
) {
562 per_cpu(last_vcpu
, cpu
) = vcpu
;
563 vcpu
->arch
.last_run_cpu
= cpu
;
567 vcpu
->arch
.host_rr6
= ia64_get_rr(RR6
);
568 vti_set_rr6(vcpu
->arch
.vmm_rr
);
569 return kvm_insert_vmm_mapping(vcpu
);
571 static void kvm_vcpu_post_transition(struct kvm_vcpu
*vcpu
)
573 kvm_purge_vmm_mapping(vcpu
);
574 vti_set_rr6(vcpu
->arch
.host_rr6
);
577 static int vti_vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
579 union context
*host_ctx
, *guest_ctx
;
582 /*Get host and guest context with guest address space.*/
583 host_ctx
= kvm_get_host_context(vcpu
);
584 guest_ctx
= kvm_get_guest_context(vcpu
);
586 r
= kvm_vcpu_pre_transition(vcpu
);
589 kvm_vmm_info
->tramp_entry(host_ctx
, guest_ctx
);
590 kvm_vcpu_post_transition(vcpu
);
596 static int __vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
603 kvm_prepare_guest_switch(vcpu
);
606 if (signal_pending(current
)) {
610 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
614 vcpu
->guest_mode
= 1;
617 r
= vti_vcpu_run(vcpu
, kvm_run
);
621 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
625 vcpu
->arch
.launched
= 1;
626 vcpu
->guest_mode
= 0;
630 * We must have an instruction between local_irq_enable() and
631 * kvm_guest_exit(), so the timer interrupt isn't delayed by
632 * the interrupt shadow. The stat.exits increment will do nicely.
633 * But we need to prevent reordering, hence this barrier():
641 r
= kvm_handle_exit(kvm_run
, vcpu
);
657 static void kvm_set_mmio_data(struct kvm_vcpu
*vcpu
)
659 struct kvm_mmio_req
*p
= kvm_get_vcpu_ioreq(vcpu
);
661 if (!vcpu
->mmio_is_write
)
662 memcpy(&p
->data
, vcpu
->mmio_data
, 8);
663 p
->state
= STATE_IORESP_READY
;
666 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
673 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
674 kvm_vcpu_block(vcpu
);
679 if (vcpu
->sigset_active
)
680 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
682 if (vcpu
->mmio_needed
) {
683 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
684 kvm_set_mmio_data(vcpu
);
685 vcpu
->mmio_read_completed
= 1;
686 vcpu
->mmio_needed
= 0;
688 r
= __vcpu_run(vcpu
, kvm_run
);
690 if (vcpu
->sigset_active
)
691 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
698 * Allocate 16M memory for every vm to hold its specific data.
699 * Its memory map is defined in kvm_host.h.
701 static struct kvm
*kvm_alloc_kvm(void)
707 vm_base
= __get_free_pages(GFP_KERNEL
, get_order(KVM_VM_DATA_SIZE
));
710 return ERR_PTR(-ENOMEM
);
711 printk(KERN_DEBUG
"kvm: VM data's base Address:0x%lx\n", vm_base
);
713 /* Zero all pages before use! */
714 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
716 kvm
= (struct kvm
*)(vm_base
+ KVM_VM_OFS
);
717 kvm
->arch
.vm_base
= vm_base
;
722 struct kvm_io_range
{
728 static const struct kvm_io_range io_ranges
[] = {
729 {VGA_IO_START
, VGA_IO_SIZE
, GPFN_FRAME_BUFFER
},
730 {MMIO_START
, MMIO_SIZE
, GPFN_LOW_MMIO
},
731 {LEGACY_IO_START
, LEGACY_IO_SIZE
, GPFN_LEGACY_IO
},
732 {IO_SAPIC_START
, IO_SAPIC_SIZE
, GPFN_IOSAPIC
},
733 {PIB_START
, PIB_SIZE
, GPFN_PIB
},
736 static void kvm_build_io_pmt(struct kvm
*kvm
)
740 /* Mark I/O ranges */
741 for (i
= 0; i
< (sizeof(io_ranges
) / sizeof(struct kvm_io_range
));
743 for (j
= io_ranges
[i
].start
;
744 j
< io_ranges
[i
].start
+ io_ranges
[i
].size
;
746 kvm_set_pmt_entry(kvm
, j
>> PAGE_SHIFT
,
747 io_ranges
[i
].type
, 0);
752 /*Use unused rids to virtualize guest rid.*/
753 #define GUEST_PHYSICAL_RR0 0x1739
754 #define GUEST_PHYSICAL_RR4 0x2739
755 #define VMM_INIT_RR 0x1660
757 static void kvm_init_vm(struct kvm
*kvm
)
763 kvm
->arch
.metaphysical_rr0
= GUEST_PHYSICAL_RR0
;
764 kvm
->arch
.metaphysical_rr4
= GUEST_PHYSICAL_RR4
;
765 kvm
->arch
.vmm_init_rr
= VMM_INIT_RR
;
767 vm_base
= kvm
->arch
.vm_base
;
769 kvm
->arch
.vhpt_base
= vm_base
+ KVM_VHPT_OFS
;
770 kvm
->arch
.vtlb_base
= vm_base
+ KVM_VTLB_OFS
;
771 kvm
->arch
.vpd_base
= vm_base
+ KVM_VPD_OFS
;
775 *Fill P2M entries for MMIO/IO ranges
777 kvm_build_io_pmt(kvm
);
781 struct kvm
*kvm_arch_create_vm(void)
783 struct kvm
*kvm
= kvm_alloc_kvm();
786 return ERR_PTR(-ENOMEM
);
793 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
,
794 struct kvm_irqchip
*chip
)
799 switch (chip
->chip_id
) {
800 case KVM_IRQCHIP_IOAPIC
:
801 memcpy(&chip
->chip
.ioapic
, ioapic_irqchip(kvm
),
802 sizeof(struct kvm_ioapic_state
));
811 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
816 switch (chip
->chip_id
) {
817 case KVM_IRQCHIP_IOAPIC
:
818 memcpy(ioapic_irqchip(kvm
),
820 sizeof(struct kvm_ioapic_state
));
829 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
831 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
834 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
839 for (i
= 0; i
< 16; i
++) {
840 vpd
->vgr
[i
] = regs
->vpd
.vgr
[i
];
841 vpd
->vbgr
[i
] = regs
->vpd
.vbgr
[i
];
843 for (i
= 0; i
< 128; i
++)
844 vpd
->vcr
[i
] = regs
->vpd
.vcr
[i
];
845 vpd
->vhpi
= regs
->vpd
.vhpi
;
846 vpd
->vnat
= regs
->vpd
.vnat
;
847 vpd
->vbnat
= regs
->vpd
.vbnat
;
848 vpd
->vpsr
= regs
->vpd
.vpsr
;
850 vpd
->vpr
= regs
->vpd
.vpr
;
853 r
= copy_from_user(&vcpu
->arch
.guest
, regs
->saved_guest
,
854 sizeof(union context
));
857 r
= copy_from_user(vcpu
+ 1, regs
->saved_stack
+
858 sizeof(struct kvm_vcpu
),
859 IA64_STK_OFFSET
- sizeof(struct kvm_vcpu
));
862 vcpu
->arch
.exit_data
=
863 ((struct kvm_vcpu
*)(regs
->saved_stack
))->arch
.exit_data
;
865 RESTORE_REGS(mp_state
);
866 RESTORE_REGS(vmm_rr
);
867 memcpy(vcpu
->arch
.itrs
, regs
->itrs
, sizeof(struct thash_data
) * NITRS
);
868 memcpy(vcpu
->arch
.dtrs
, regs
->dtrs
, sizeof(struct thash_data
) * NDTRS
);
869 RESTORE_REGS(itr_regions
);
870 RESTORE_REGS(dtr_regions
);
871 RESTORE_REGS(tc_regions
);
872 RESTORE_REGS(irq_check
);
873 RESTORE_REGS(itc_check
);
874 RESTORE_REGS(timer_check
);
875 RESTORE_REGS(timer_pending
);
876 RESTORE_REGS(last_itc
);
877 for (i
= 0; i
< 8; i
++) {
878 vcpu
->arch
.vrr
[i
] = regs
->vrr
[i
];
879 vcpu
->arch
.ibr
[i
] = regs
->ibr
[i
];
880 vcpu
->arch
.dbr
[i
] = regs
->dbr
[i
];
882 for (i
= 0; i
< 4; i
++)
883 vcpu
->arch
.insvc
[i
] = regs
->insvc
[i
];
885 RESTORE_REGS(metaphysical_rr0
);
886 RESTORE_REGS(metaphysical_rr4
);
887 RESTORE_REGS(metaphysical_saved_rr0
);
888 RESTORE_REGS(metaphysical_saved_rr4
);
889 RESTORE_REGS(fp_psr
);
890 RESTORE_REGS(saved_gp
);
892 vcpu
->arch
.irq_new_pending
= 1;
893 vcpu
->arch
.itc_offset
= regs
->saved_itc
- ia64_getreg(_IA64_REG_AR_ITC
);
894 set_bit(KVM_REQ_RESUME
, &vcpu
->requests
);
902 long kvm_arch_vm_ioctl(struct file
*filp
,
903 unsigned int ioctl
, unsigned long arg
)
905 struct kvm
*kvm
= filp
->private_data
;
906 void __user
*argp
= (void __user
*)arg
;
910 case KVM_SET_MEMORY_REGION
: {
911 struct kvm_memory_region kvm_mem
;
912 struct kvm_userspace_memory_region kvm_userspace_mem
;
915 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
917 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
918 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
919 kvm_userspace_mem
.guest_phys_addr
=
920 kvm_mem
.guest_phys_addr
;
921 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
922 r
= kvm_vm_ioctl_set_memory_region(kvm
,
923 &kvm_userspace_mem
, 0);
928 case KVM_CREATE_IRQCHIP
:
930 r
= kvm_ioapic_init(kvm
);
935 struct kvm_irq_level irq_event
;
938 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
940 if (irqchip_in_kernel(kvm
)) {
941 mutex_lock(&kvm
->lock
);
942 kvm_ioapic_set_irq(kvm
->arch
.vioapic
,
945 mutex_unlock(&kvm
->lock
);
950 case KVM_GET_IRQCHIP
: {
951 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
952 struct kvm_irqchip chip
;
955 if (copy_from_user(&chip
, argp
, sizeof chip
))
958 if (!irqchip_in_kernel(kvm
))
960 r
= kvm_vm_ioctl_get_irqchip(kvm
, &chip
);
964 if (copy_to_user(argp
, &chip
, sizeof chip
))
969 case KVM_SET_IRQCHIP
: {
970 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
971 struct kvm_irqchip chip
;
974 if (copy_from_user(&chip
, argp
, sizeof chip
))
977 if (!irqchip_in_kernel(kvm
))
979 r
= kvm_vm_ioctl_set_irqchip(kvm
, &chip
);
992 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
993 struct kvm_sregs
*sregs
)
998 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
999 struct kvm_sregs
*sregs
)
1004 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1005 struct kvm_translation
*tr
)
1011 static int kvm_alloc_vmm_area(void)
1013 if (!kvm_vmm_base
&& (kvm_vm_buffer_size
< KVM_VM_BUFFER_SIZE
)) {
1014 kvm_vmm_base
= __get_free_pages(GFP_KERNEL
,
1015 get_order(KVM_VMM_SIZE
));
1019 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1020 kvm_vm_buffer
= kvm_vmm_base
+ VMM_SIZE
;
1022 printk(KERN_DEBUG
"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1023 kvm_vmm_base
, kvm_vm_buffer
);
1029 static void kvm_free_vmm_area(void)
1032 /*Zero this area before free to avoid bits leak!!*/
1033 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1034 free_pages(kvm_vmm_base
, get_order(KVM_VMM_SIZE
));
1041 static void vti_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1045 static int vti_init_vpd(struct kvm_vcpu
*vcpu
)
1048 union cpuid3_t cpuid3
;
1049 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1052 return PTR_ERR(vpd
);
1055 for (i
= 0; i
< 5; i
++)
1056 vpd
->vcpuid
[i
] = ia64_get_cpuid(i
);
1058 /* Limit the CPUID number to 5 */
1059 cpuid3
.value
= vpd
->vcpuid
[3];
1060 cpuid3
.number
= 4; /* 5 - 1 */
1061 vpd
->vcpuid
[3] = cpuid3
.value
;
1063 /*Set vac and vdc fields*/
1064 vpd
->vac
.a_from_int_cr
= 1;
1065 vpd
->vac
.a_to_int_cr
= 1;
1066 vpd
->vac
.a_from_psr
= 1;
1067 vpd
->vac
.a_from_cpuid
= 1;
1068 vpd
->vac
.a_cover
= 1;
1071 vpd
->vdc
.d_vmsw
= 1;
1073 /*Set virtual buffer*/
1074 vpd
->virt_env_vaddr
= KVM_VM_BUFFER_BASE
;
1079 static int vti_create_vp(struct kvm_vcpu
*vcpu
)
1082 struct vpd
*vpd
= vcpu
->arch
.vpd
;
1083 unsigned long vmm_ivt
;
1085 vmm_ivt
= kvm_vmm_info
->vmm_ivt
;
1087 printk(KERN_DEBUG
"kvm: vcpu:%p,ivt: 0x%lx\n", vcpu
, vmm_ivt
);
1089 ret
= ia64_pal_vp_create((u64
*)vpd
, (u64
*)vmm_ivt
, 0);
1092 printk(KERN_ERR
"kvm: ia64_pal_vp_create failed!\n");
1098 static void init_ptce_info(struct kvm_vcpu
*vcpu
)
1100 ia64_ptce_info_t ptce
= {0};
1102 ia64_get_ptce(&ptce
);
1103 vcpu
->arch
.ptce_base
= ptce
.base
;
1104 vcpu
->arch
.ptce_count
[0] = ptce
.count
[0];
1105 vcpu
->arch
.ptce_count
[1] = ptce
.count
[1];
1106 vcpu
->arch
.ptce_stride
[0] = ptce
.stride
[0];
1107 vcpu
->arch
.ptce_stride
[1] = ptce
.stride
[1];
1110 static void kvm_migrate_hlt_timer(struct kvm_vcpu
*vcpu
)
1112 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
1114 if (hrtimer_cancel(p_ht
))
1115 hrtimer_start(p_ht
, p_ht
->expires
, HRTIMER_MODE_ABS
);
1118 static enum hrtimer_restart
hlt_timer_fn(struct hrtimer
*data
)
1120 struct kvm_vcpu
*vcpu
;
1121 wait_queue_head_t
*q
;
1123 vcpu
= container_of(data
, struct kvm_vcpu
, arch
.hlt_timer
);
1124 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_HALTED
)
1128 if (waitqueue_active(q
)) {
1129 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1130 wake_up_interruptible(q
);
1133 vcpu
->arch
.timer_check
= 1;
1134 return HRTIMER_NORESTART
;
1137 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1139 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
1145 struct kvm
*kvm
= vcpu
->kvm
;
1146 struct kvm_pt_regs
*regs
= vcpu_regs(vcpu
);
1148 union context
*p_ctx
= &vcpu
->arch
.guest
;
1149 struct kvm_vcpu
*vmm_vcpu
= to_guest(vcpu
->kvm
, vcpu
);
1151 /*Init vcpu context for first run.*/
1152 if (IS_ERR(vmm_vcpu
))
1153 return PTR_ERR(vmm_vcpu
);
1155 if (vcpu
->vcpu_id
== 0) {
1156 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1158 /*Set entry address for first run.*/
1159 regs
->cr_iip
= PALE_RESET_ENTRY
;
1161 /*Initilize itc offset for vcpus*/
1162 itc_offset
= 0UL - ia64_getreg(_IA64_REG_AR_ITC
);
1163 for (i
= 0; i
< MAX_VCPU_NUM
; i
++) {
1164 v
= (struct kvm_vcpu
*)((char *)vcpu
+ VCPU_SIZE
* i
);
1165 v
->arch
.itc_offset
= itc_offset
;
1166 v
->arch
.last_itc
= 0;
1169 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
1172 vcpu
->arch
.apic
= kzalloc(sizeof(struct kvm_lapic
), GFP_KERNEL
);
1173 if (!vcpu
->arch
.apic
)
1175 vcpu
->arch
.apic
->vcpu
= vcpu
;
1178 p_ctx
->gr
[12] = (unsigned long)((char *)vmm_vcpu
+ IA64_STK_OFFSET
);
1179 p_ctx
->gr
[13] = (unsigned long)vmm_vcpu
;
1180 p_ctx
->psr
= 0x1008522000UL
;
1181 p_ctx
->ar
[40] = FPSR_DEFAULT
; /*fpsr*/
1182 p_ctx
->caller_unat
= 0;
1184 p_ctx
->ar
[36] = 0x0; /*unat*/
1185 p_ctx
->ar
[19] = 0x0; /*rnat*/
1186 p_ctx
->ar
[18] = (unsigned long)vmm_vcpu
+
1187 ((sizeof(struct kvm_vcpu
)+15) & ~15);
1188 p_ctx
->ar
[64] = 0x0; /*pfs*/
1189 p_ctx
->cr
[0] = 0x7e04UL
;
1190 p_ctx
->cr
[2] = (unsigned long)kvm_vmm_info
->vmm_ivt
;
1191 p_ctx
->cr
[8] = 0x3c;
1193 /*Initilize region register*/
1194 p_ctx
->rr
[0] = 0x30;
1195 p_ctx
->rr
[1] = 0x30;
1196 p_ctx
->rr
[2] = 0x30;
1197 p_ctx
->rr
[3] = 0x30;
1198 p_ctx
->rr
[4] = 0x30;
1199 p_ctx
->rr
[5] = 0x30;
1200 p_ctx
->rr
[7] = 0x30;
1202 /*Initilize branch register 0*/
1203 p_ctx
->br
[0] = *(unsigned long *)kvm_vmm_info
->vmm_entry
;
1205 vcpu
->arch
.vmm_rr
= kvm
->arch
.vmm_init_rr
;
1206 vcpu
->arch
.metaphysical_rr0
= kvm
->arch
.metaphysical_rr0
;
1207 vcpu
->arch
.metaphysical_rr4
= kvm
->arch
.metaphysical_rr4
;
1209 hrtimer_init(&vcpu
->arch
.hlt_timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
1210 vcpu
->arch
.hlt_timer
.function
= hlt_timer_fn
;
1212 vcpu
->arch
.last_run_cpu
= -1;
1213 vcpu
->arch
.vpd
= (struct vpd
*)VPD_ADDR(vcpu
->vcpu_id
);
1214 vcpu
->arch
.vsa_base
= kvm_vsa_base
;
1215 vcpu
->arch
.__gp
= kvm_vmm_gp
;
1216 vcpu
->arch
.dirty_log_lock_pa
= __pa(&kvm
->arch
.dirty_log_lock
);
1217 vcpu
->arch
.vhpt
.hash
= (struct thash_data
*)VHPT_ADDR(vcpu
->vcpu_id
);
1218 vcpu
->arch
.vtlb
.hash
= (struct thash_data
*)VTLB_ADDR(vcpu
->vcpu_id
);
1219 init_ptce_info(vcpu
);
1226 static int vti_vcpu_setup(struct kvm_vcpu
*vcpu
, int id
)
1231 local_irq_save(psr
);
1232 r
= kvm_insert_vmm_mapping(vcpu
);
1235 r
= kvm_vcpu_init(vcpu
, vcpu
->kvm
, id
);
1239 r
= vti_init_vpd(vcpu
);
1241 printk(KERN_DEBUG
"kvm: vpd init error!!\n");
1245 r
= vti_create_vp(vcpu
);
1249 kvm_purge_vmm_mapping(vcpu
);
1250 local_irq_restore(psr
);
1254 kvm_vcpu_uninit(vcpu
);
1259 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
1262 struct kvm_vcpu
*vcpu
;
1263 unsigned long vm_base
= kvm
->arch
.vm_base
;
1269 printk(KERN_ERR
"kvm: Create vcpu[%d] error!\n", id
);
1272 vcpu
= (struct kvm_vcpu
*)(vm_base
+ KVM_VCPU_OFS
+ VCPU_SIZE
* id
);
1276 vti_vcpu_load(vcpu
, cpu
);
1277 r
= vti_vcpu_setup(vcpu
, id
);
1281 printk(KERN_DEBUG
"kvm: vcpu_setup error!!\n");
1290 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1295 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1300 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1305 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
1306 struct kvm_debug_guest
*dbg
)
1311 static void free_kvm(struct kvm
*kvm
)
1313 unsigned long vm_base
= kvm
->arch
.vm_base
;
1316 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
1317 free_pages(vm_base
, get_order(KVM_VM_DATA_SIZE
));
1322 static void kvm_release_vm_pages(struct kvm
*kvm
)
1324 struct kvm_memory_slot
*memslot
;
1326 unsigned long base_gfn
;
1328 for (i
= 0; i
< kvm
->nmemslots
; i
++) {
1329 memslot
= &kvm
->memslots
[i
];
1330 base_gfn
= memslot
->base_gfn
;
1332 for (j
= 0; j
< memslot
->npages
; j
++) {
1333 if (memslot
->rmap
[j
])
1334 put_page((struct page
*)memslot
->rmap
[j
]);
1339 void kvm_arch_destroy_vm(struct kvm
*kvm
)
1341 kfree(kvm
->arch
.vioapic
);
1342 kvm_release_vm_pages(kvm
);
1343 kvm_free_physmem(kvm
);
1347 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1351 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1353 if (cpu
!= vcpu
->cpu
) {
1355 if (vcpu
->arch
.ht_active
)
1356 kvm_migrate_hlt_timer(vcpu
);
1360 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1362 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1366 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1369 for (i
= 0; i
< 16; i
++) {
1370 regs
->vpd
.vgr
[i
] = vpd
->vgr
[i
];
1371 regs
->vpd
.vbgr
[i
] = vpd
->vbgr
[i
];
1373 for (i
= 0; i
< 128; i
++)
1374 regs
->vpd
.vcr
[i
] = vpd
->vcr
[i
];
1375 regs
->vpd
.vhpi
= vpd
->vhpi
;
1376 regs
->vpd
.vnat
= vpd
->vnat
;
1377 regs
->vpd
.vbnat
= vpd
->vbnat
;
1378 regs
->vpd
.vpsr
= vpd
->vpsr
;
1379 regs
->vpd
.vpr
= vpd
->vpr
;
1382 r
= copy_to_user(regs
->saved_guest
, &vcpu
->arch
.guest
,
1383 sizeof(union context
));
1386 r
= copy_to_user(regs
->saved_stack
, (void *)vcpu
, IA64_STK_OFFSET
);
1389 SAVE_REGS(mp_state
);
1391 memcpy(regs
->itrs
, vcpu
->arch
.itrs
, sizeof(struct thash_data
) * NITRS
);
1392 memcpy(regs
->dtrs
, vcpu
->arch
.dtrs
, sizeof(struct thash_data
) * NDTRS
);
1393 SAVE_REGS(itr_regions
);
1394 SAVE_REGS(dtr_regions
);
1395 SAVE_REGS(tc_regions
);
1396 SAVE_REGS(irq_check
);
1397 SAVE_REGS(itc_check
);
1398 SAVE_REGS(timer_check
);
1399 SAVE_REGS(timer_pending
);
1400 SAVE_REGS(last_itc
);
1401 for (i
= 0; i
< 8; i
++) {
1402 regs
->vrr
[i
] = vcpu
->arch
.vrr
[i
];
1403 regs
->ibr
[i
] = vcpu
->arch
.ibr
[i
];
1404 regs
->dbr
[i
] = vcpu
->arch
.dbr
[i
];
1406 for (i
= 0; i
< 4; i
++)
1407 regs
->insvc
[i
] = vcpu
->arch
.insvc
[i
];
1408 regs
->saved_itc
= vcpu
->arch
.itc_offset
+ ia64_getreg(_IA64_REG_AR_ITC
);
1410 SAVE_REGS(metaphysical_rr0
);
1411 SAVE_REGS(metaphysical_rr4
);
1412 SAVE_REGS(metaphysical_saved_rr0
);
1413 SAVE_REGS(metaphysical_saved_rr4
);
1415 SAVE_REGS(saved_gp
);
1422 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1425 hrtimer_cancel(&vcpu
->arch
.hlt_timer
);
1426 kfree(vcpu
->arch
.apic
);
1430 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1431 unsigned int ioctl
, unsigned long arg
)
1436 int kvm_arch_set_memory_region(struct kvm
*kvm
,
1437 struct kvm_userspace_memory_region
*mem
,
1438 struct kvm_memory_slot old
,
1443 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
1444 struct kvm_memory_slot
*memslot
= &kvm
->memslots
[mem
->slot
];
1445 unsigned long base_gfn
= memslot
->base_gfn
;
1447 for (i
= 0; i
< npages
; i
++) {
1448 page
= gfn_to_page(kvm
, base_gfn
+ i
);
1449 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1450 page_to_pfn(page
) << PAGE_SHIFT
,
1451 _PAGE_AR_RWX
|_PAGE_MA_WB
);
1452 memslot
->rmap
[i
] = (unsigned long)page
;
1458 void kvm_arch_flush_shadow(struct kvm
*kvm
)
1462 long kvm_arch_dev_ioctl(struct file
*filp
,
1463 unsigned int ioctl
, unsigned long arg
)
1468 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
1470 kvm_vcpu_uninit(vcpu
);
1473 static int vti_cpu_has_kvm_support(void)
1475 long avail
= 1, status
= 1, control
= 1;
1478 ret
= ia64_pal_proc_get_features(&avail
, &status
, &control
, 0);
1482 if (!(avail
& PAL_PROC_VM_BIT
))
1485 printk(KERN_DEBUG
"kvm: Hardware Supports VT\n");
1487 ret
= ia64_pal_vp_env_info(&kvm_vm_buffer_size
, &vp_env_info
);
1490 printk(KERN_DEBUG
"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size
);
1492 if (!(vp_env_info
& VP_OPCODE
)) {
1493 printk(KERN_WARNING
"kvm: No opcode ability on hardware, "
1494 "vm_env_info:0x%lx\n", vp_env_info
);
1502 static int kvm_relocate_vmm(struct kvm_vmm_info
*vmm_info
,
1503 struct module
*module
)
1505 unsigned long module_base
;
1506 unsigned long vmm_size
;
1508 unsigned long vmm_offset
, func_offset
, fdesc_offset
;
1509 struct fdesc
*p_fdesc
;
1513 if (!kvm_vmm_base
) {
1514 printk("kvm: kvm area hasn't been initilized yet!!\n");
1518 /*Calculate new position of relocated vmm module.*/
1519 module_base
= (unsigned long)module
->module_core
;
1520 vmm_size
= module
->core_size
;
1521 if (unlikely(vmm_size
> KVM_VMM_SIZE
))
1524 memcpy((void *)kvm_vmm_base
, (void *)module_base
, vmm_size
);
1525 kvm_flush_icache(kvm_vmm_base
, vmm_size
);
1527 /*Recalculate kvm_vmm_info based on new VMM*/
1528 vmm_offset
= vmm_info
->vmm_ivt
- module_base
;
1529 kvm_vmm_info
->vmm_ivt
= KVM_VMM_BASE
+ vmm_offset
;
1530 printk(KERN_DEBUG
"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1531 kvm_vmm_info
->vmm_ivt
);
1533 fdesc_offset
= (unsigned long)vmm_info
->vmm_entry
- module_base
;
1534 kvm_vmm_info
->vmm_entry
= (kvm_vmm_entry
*)(KVM_VMM_BASE
+
1536 func_offset
= *(unsigned long *)vmm_info
->vmm_entry
- module_base
;
1537 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1538 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1539 p_fdesc
->gp
= KVM_VMM_BASE
+(p_fdesc
->gp
- module_base
);
1541 printk(KERN_DEBUG
"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1542 KVM_VMM_BASE
+func_offset
);
1544 fdesc_offset
= (unsigned long)vmm_info
->tramp_entry
- module_base
;
1545 kvm_vmm_info
->tramp_entry
= (kvm_tramp_entry
*)(KVM_VMM_BASE
+
1547 func_offset
= *(unsigned long *)vmm_info
->tramp_entry
- module_base
;
1548 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1549 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1550 p_fdesc
->gp
= KVM_VMM_BASE
+ (p_fdesc
->gp
- module_base
);
1552 kvm_vmm_gp
= p_fdesc
->gp
;
1554 printk(KERN_DEBUG
"kvm: Relocated VMM's Entry IP:%p\n",
1555 kvm_vmm_info
->vmm_entry
);
1556 printk(KERN_DEBUG
"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1557 KVM_VMM_BASE
+ func_offset
);
1562 int kvm_arch_init(void *opaque
)
1565 struct kvm_vmm_info
*vmm_info
= (struct kvm_vmm_info
*)opaque
;
1567 if (!vti_cpu_has_kvm_support()) {
1568 printk(KERN_ERR
"kvm: No Hardware Virtualization Support!\n");
1574 printk(KERN_ERR
"kvm: Already loaded VMM module!\n");
1580 kvm_vmm_info
= kzalloc(sizeof(struct kvm_vmm_info
), GFP_KERNEL
);
1584 if (kvm_alloc_vmm_area())
1587 r
= kvm_relocate_vmm(vmm_info
, vmm_info
->module
);
1594 kvm_free_vmm_area();
1596 kfree(kvm_vmm_info
);
1601 void kvm_arch_exit(void)
1603 kvm_free_vmm_area();
1604 kfree(kvm_vmm_info
);
1605 kvm_vmm_info
= NULL
;
1608 static int kvm_ia64_sync_dirty_log(struct kvm
*kvm
,
1609 struct kvm_dirty_log
*log
)
1611 struct kvm_memory_slot
*memslot
;
1614 unsigned long *dirty_bitmap
= (unsigned long *)((void *)kvm
- KVM_VM_OFS
1615 + KVM_MEM_DIRTY_LOG_OFS
);
1618 if (log
->slot
>= KVM_MEMORY_SLOTS
)
1621 memslot
= &kvm
->memslots
[log
->slot
];
1623 if (!memslot
->dirty_bitmap
)
1626 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1627 base
= memslot
->base_gfn
/ BITS_PER_LONG
;
1629 for (i
= 0; i
< n
/sizeof(long); ++i
) {
1630 memslot
->dirty_bitmap
[i
] = dirty_bitmap
[base
+ i
];
1631 dirty_bitmap
[base
+ i
] = 0;
1638 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
1639 struct kvm_dirty_log
*log
)
1643 struct kvm_memory_slot
*memslot
;
1646 spin_lock(&kvm
->arch
.dirty_log_lock
);
1648 r
= kvm_ia64_sync_dirty_log(kvm
, log
);
1652 r
= kvm_get_dirty_log(kvm
, log
, &is_dirty
);
1656 /* If nothing is dirty, don't bother messing with page tables. */
1658 kvm_flush_remote_tlbs(kvm
);
1659 memslot
= &kvm
->memslots
[log
->slot
];
1660 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1661 memset(memslot
->dirty_bitmap
, 0, n
);
1665 spin_unlock(&kvm
->arch
.dirty_log_lock
);
1669 int kvm_arch_hardware_setup(void)
1674 void kvm_arch_hardware_unsetup(void)
1678 static void vcpu_kick_intr(void *info
)
1681 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)info
;
1682 printk(KERN_DEBUG
"vcpu_kick_intr %p \n", vcpu
);
1686 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
1688 int ipi_pcpu
= vcpu
->cpu
;
1690 if (waitqueue_active(&vcpu
->wq
))
1691 wake_up_interruptible(&vcpu
->wq
);
1693 if (vcpu
->guest_mode
)
1694 smp_call_function_single(ipi_pcpu
, vcpu_kick_intr
, vcpu
, 0);
1697 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, u8 vec
, u8 trig
)
1700 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1702 if (!test_and_set_bit(vec
, &vpd
->irr
[0])) {
1703 vcpu
->arch
.irq_new_pending
= 1;
1704 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
)
1705 kvm_vcpu_kick(vcpu
);
1706 else if (vcpu
->arch
.mp_state
== KVM_MP_STATE_HALTED
) {
1707 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1708 if (waitqueue_active(&vcpu
->wq
))
1709 wake_up_interruptible(&vcpu
->wq
);
1716 int kvm_apic_match_physical_addr(struct kvm_lapic
*apic
, u16 dest
)
1718 return apic
->vcpu
->vcpu_id
== dest
;
1721 int kvm_apic_match_logical_addr(struct kvm_lapic
*apic
, u8 mda
)
1726 struct kvm_vcpu
*kvm_get_lowest_prio_vcpu(struct kvm
*kvm
, u8 vector
,
1727 unsigned long bitmap
)
1729 struct kvm_vcpu
*lvcpu
= kvm
->vcpus
[0];
1732 for (i
= 1; i
< KVM_MAX_VCPUS
; i
++) {
1735 if (lvcpu
->arch
.xtp
> kvm
->vcpus
[i
]->arch
.xtp
)
1736 lvcpu
= kvm
->vcpus
[i
];
1742 static int find_highest_bits(int *dat
)
1747 /* loop for all 256 bits */
1748 for (i
= 7; i
>= 0 ; i
--) {
1752 return i
* 32 + bitnum
- 1;
1759 int kvm_highest_pending_irq(struct kvm_vcpu
*vcpu
)
1761 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1763 if (vpd
->irr
[0] & (1UL << NMI_VECTOR
))
1765 if (vpd
->irr
[0] & (1UL << ExtINT_VECTOR
))
1766 return ExtINT_VECTOR
;
1768 return find_highest_bits((int *)&vpd
->irr
[0]);
1771 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
)
1773 if (kvm_highest_pending_irq(vcpu
) != -1)
1778 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
1783 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
1788 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
1790 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
;
1793 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1794 struct kvm_mp_state
*mp_state
)
1799 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1800 struct kvm_mp_state
*mp_state
)