2 * kvm_ia64.c: Basic KVM suppport On Itanium series processors
5 * Copyright (C) 2007, Intel Corporation.
6 * Xiantao Zhang (xiantao.zhang@intel.com)
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
19 * Place - Suite 330, Boston, MA 02111-1307 USA.
23 #include <linux/module.h>
24 #include <linux/errno.h>
25 #include <linux/percpu.h>
26 #include <linux/gfp.h>
28 #include <linux/smp.h>
29 #include <linux/kvm_host.h>
30 #include <linux/kvm.h>
31 #include <linux/bitops.h>
32 #include <linux/hrtimer.h>
33 #include <linux/uaccess.h>
34 #include <linux/intel-iommu.h>
36 #include <asm/pgtable.h>
37 #include <asm/gcc_intrin.h>
39 #include <asm/cacheflush.h>
40 #include <asm/div64.h>
51 static unsigned long kvm_vmm_base
;
52 static unsigned long kvm_vsa_base
;
53 static unsigned long kvm_vm_buffer
;
54 static unsigned long kvm_vm_buffer_size
;
55 unsigned long kvm_vmm_gp
;
57 static long vp_env_info
;
59 static struct kvm_vmm_info
*kvm_vmm_info
;
61 static DEFINE_PER_CPU(struct kvm_vcpu
*, last_vcpu
);
63 struct kvm_stats_debugfs_item debugfs_entries
[] = {
67 static void kvm_flush_icache(unsigned long start
, unsigned long len
)
71 for (l
= 0; l
< (len
+ 32); l
+= 32)
78 static void kvm_flush_tlb_all(void)
80 unsigned long i
, j
, count0
, count1
, stride0
, stride1
, addr
;
83 addr
= local_cpu_data
->ptce_base
;
84 count0
= local_cpu_data
->ptce_count
[0];
85 count1
= local_cpu_data
->ptce_count
[1];
86 stride0
= local_cpu_data
->ptce_stride
[0];
87 stride1
= local_cpu_data
->ptce_stride
[1];
89 local_irq_save(flags
);
90 for (i
= 0; i
< count0
; ++i
) {
91 for (j
= 0; j
< count1
; ++j
) {
97 local_irq_restore(flags
);
98 ia64_srlz_i(); /* srlz.i implies srlz.d */
101 long ia64_pal_vp_create(u64
*vpd
, u64
*host_iva
, u64
*opt_handler
)
103 struct ia64_pal_retval iprv
;
105 PAL_CALL_STK(iprv
, PAL_VP_CREATE
, (u64
)vpd
, (u64
)host_iva
,
111 static DEFINE_SPINLOCK(vp_lock
);
113 void kvm_arch_hardware_enable(void *garbage
)
118 unsigned long saved_psr
;
121 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
123 local_irq_save(saved_psr
);
124 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
125 local_irq_restore(saved_psr
);
130 status
= ia64_pal_vp_init_env(kvm_vsa_base
?
131 VP_INIT_ENV
: VP_INIT_ENV_INITALIZE
,
132 __pa(kvm_vm_buffer
), KVM_VM_BUFFER_BASE
, &tmp_base
);
134 printk(KERN_WARNING
"kvm: Failed to Enable VT Support!!!!\n");
139 kvm_vsa_base
= tmp_base
;
140 printk(KERN_INFO
"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base
);
142 spin_unlock(&vp_lock
);
143 ia64_ptr_entry(0x3, slot
);
146 void kvm_arch_hardware_disable(void *garbage
)
152 unsigned long saved_psr
;
153 unsigned long host_iva
= ia64_getreg(_IA64_REG_CR_IVA
);
155 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
158 local_irq_save(saved_psr
);
159 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
160 local_irq_restore(saved_psr
);
164 status
= ia64_pal_vp_exit_env(host_iva
);
166 printk(KERN_DEBUG
"kvm: Failed to disable VT support! :%ld\n",
168 ia64_ptr_entry(0x3, slot
);
171 void kvm_arch_check_processor_compat(void *rtn
)
176 int kvm_dev_ioctl_check_extension(long ext
)
182 case KVM_CAP_IRQCHIP
:
183 case KVM_CAP_USER_MEMORY
:
184 case KVM_CAP_MP_STATE
:
188 case KVM_CAP_COALESCED_MMIO
:
189 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
192 r
= intel_iommu_found();
201 static struct kvm_io_device
*vcpu_find_mmio_dev(struct kvm_vcpu
*vcpu
,
202 gpa_t addr
, int len
, int is_write
)
204 struct kvm_io_device
*dev
;
206 dev
= kvm_io_bus_find_dev(&vcpu
->kvm
->mmio_bus
, addr
, len
, is_write
);
211 static int handle_vm_error(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
213 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
214 kvm_run
->hw
.hardware_exit_reason
= 1;
218 static int handle_mmio(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
220 struct kvm_mmio_req
*p
;
221 struct kvm_io_device
*mmio_dev
;
223 p
= kvm_get_vcpu_ioreq(vcpu
);
225 if ((p
->addr
& PAGE_MASK
) == IOAPIC_DEFAULT_BASE_ADDRESS
)
227 vcpu
->mmio_needed
= 1;
228 vcpu
->mmio_phys_addr
= kvm_run
->mmio
.phys_addr
= p
->addr
;
229 vcpu
->mmio_size
= kvm_run
->mmio
.len
= p
->size
;
230 vcpu
->mmio_is_write
= kvm_run
->mmio
.is_write
= !p
->dir
;
232 if (vcpu
->mmio_is_write
)
233 memcpy(vcpu
->mmio_data
, &p
->data
, p
->size
);
234 memcpy(kvm_run
->mmio
.data
, &p
->data
, p
->size
);
235 kvm_run
->exit_reason
= KVM_EXIT_MMIO
;
238 mmio_dev
= vcpu_find_mmio_dev(vcpu
, p
->addr
, p
->size
, !p
->dir
);
241 kvm_iodevice_write(mmio_dev
, p
->addr
, p
->size
,
244 kvm_iodevice_read(mmio_dev
, p
->addr
, p
->size
,
248 printk(KERN_ERR
"kvm: No iodevice found! addr:%lx\n", p
->addr
);
249 p
->state
= STATE_IORESP_READY
;
254 static int handle_pal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
256 struct exit_ctl_data
*p
;
258 p
= kvm_get_exit_data(vcpu
);
260 if (p
->exit_reason
== EXIT_REASON_PAL_CALL
)
261 return kvm_pal_emul(vcpu
, kvm_run
);
263 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
264 kvm_run
->hw
.hardware_exit_reason
= 2;
269 static int handle_sal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
271 struct exit_ctl_data
*p
;
273 p
= kvm_get_exit_data(vcpu
);
275 if (p
->exit_reason
== EXIT_REASON_SAL_CALL
) {
279 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
280 kvm_run
->hw
.hardware_exit_reason
= 3;
287 * offset: address offset to IPI space.
288 * value: deliver value.
290 static void vcpu_deliver_ipi(struct kvm_vcpu
*vcpu
, uint64_t dm
,
295 kvm_apic_set_irq(vcpu
, vector
, 0);
298 kvm_apic_set_irq(vcpu
, 2, 0);
301 kvm_apic_set_irq(vcpu
, 0, 0);
306 printk(KERN_ERR
"kvm: Unimplemented Deliver reserved IPI!\n");
311 static struct kvm_vcpu
*lid_to_vcpu(struct kvm
*kvm
, unsigned long id
,
317 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
319 lid
.val
= VCPU_LID(kvm
->vcpus
[i
]);
320 if (lid
.id
== id
&& lid
.eid
== eid
)
321 return kvm
->vcpus
[i
];
328 static int handle_ipi(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
330 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
331 struct kvm_vcpu
*target_vcpu
;
332 struct kvm_pt_regs
*regs
;
333 union ia64_ipi_a addr
= p
->u
.ipi_data
.addr
;
334 union ia64_ipi_d data
= p
->u
.ipi_data
.data
;
336 target_vcpu
= lid_to_vcpu(vcpu
->kvm
, addr
.id
, addr
.eid
);
338 return handle_vm_error(vcpu
, kvm_run
);
340 if (!target_vcpu
->arch
.launched
) {
341 regs
= vcpu_regs(target_vcpu
);
343 regs
->cr_iip
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_ip
;
344 regs
->r1
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_gp
;
346 target_vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
347 if (waitqueue_active(&target_vcpu
->wq
))
348 wake_up_interruptible(&target_vcpu
->wq
);
350 vcpu_deliver_ipi(target_vcpu
, data
.dm
, data
.vector
);
351 if (target_vcpu
!= vcpu
)
352 kvm_vcpu_kick(target_vcpu
);
359 struct kvm_ptc_g ptc_g_data
;
360 struct kvm_vcpu
*vcpu
;
363 static void vcpu_global_purge(void *info
)
365 struct call_data
*p
= (struct call_data
*)info
;
366 struct kvm_vcpu
*vcpu
= p
->vcpu
;
368 if (test_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
))
371 set_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
372 if (vcpu
->arch
.ptc_g_count
< MAX_PTC_G_NUM
) {
373 vcpu
->arch
.ptc_g_data
[vcpu
->arch
.ptc_g_count
++] =
376 clear_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
377 vcpu
->arch
.ptc_g_count
= 0;
378 set_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
);
382 static int handle_global_purge(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
384 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
385 struct kvm
*kvm
= vcpu
->kvm
;
386 struct call_data call_data
;
389 call_data
.ptc_g_data
= p
->u
.ptc_g_data
;
391 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
392 if (!kvm
->vcpus
[i
] || kvm
->vcpus
[i
]->arch
.mp_state
==
393 KVM_MP_STATE_UNINITIALIZED
||
394 vcpu
== kvm
->vcpus
[i
])
397 if (waitqueue_active(&kvm
->vcpus
[i
]->wq
))
398 wake_up_interruptible(&kvm
->vcpus
[i
]->wq
);
400 if (kvm
->vcpus
[i
]->cpu
!= -1) {
401 call_data
.vcpu
= kvm
->vcpus
[i
];
402 smp_call_function_single(kvm
->vcpus
[i
]->cpu
,
403 vcpu_global_purge
, &call_data
, 1);
405 printk(KERN_WARNING
"kvm: Uninit vcpu received ipi!\n");
411 static int handle_switch_rr6(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
416 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
421 unsigned long vcpu_now_itc
;
422 unsigned long expires
;
423 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
424 unsigned long cyc_per_usec
= local_cpu_data
->cyc_per_usec
;
425 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
427 if (irqchip_in_kernel(vcpu
->kvm
)) {
429 vcpu_now_itc
= ia64_getreg(_IA64_REG_AR_ITC
) + vcpu
->arch
.itc_offset
;
431 if (time_after(vcpu_now_itc
, vpd
->itm
)) {
432 vcpu
->arch
.timer_check
= 1;
435 itc_diff
= vpd
->itm
- vcpu_now_itc
;
437 itc_diff
= -itc_diff
;
439 expires
= div64_u64(itc_diff
, cyc_per_usec
);
440 kt
= ktime_set(0, 1000 * expires
);
442 down_read(&vcpu
->kvm
->slots_lock
);
443 vcpu
->arch
.ht_active
= 1;
444 hrtimer_start(p_ht
, kt
, HRTIMER_MODE_ABS
);
446 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
447 kvm_vcpu_block(vcpu
);
448 hrtimer_cancel(p_ht
);
449 vcpu
->arch
.ht_active
= 0;
451 if (test_and_clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
))
452 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_HALTED
)
453 vcpu
->arch
.mp_state
=
454 KVM_MP_STATE_RUNNABLE
;
455 up_read(&vcpu
->kvm
->slots_lock
);
457 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_RUNNABLE
)
461 printk(KERN_ERR
"kvm: Unsupported userspace halt!");
466 static int handle_vm_shutdown(struct kvm_vcpu
*vcpu
,
467 struct kvm_run
*kvm_run
)
469 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
473 static int handle_external_interrupt(struct kvm_vcpu
*vcpu
,
474 struct kvm_run
*kvm_run
)
479 static int (*kvm_vti_exit_handlers
[])(struct kvm_vcpu
*vcpu
,
480 struct kvm_run
*kvm_run
) = {
481 [EXIT_REASON_VM_PANIC
] = handle_vm_error
,
482 [EXIT_REASON_MMIO_INSTRUCTION
] = handle_mmio
,
483 [EXIT_REASON_PAL_CALL
] = handle_pal_call
,
484 [EXIT_REASON_SAL_CALL
] = handle_sal_call
,
485 [EXIT_REASON_SWITCH_RR6
] = handle_switch_rr6
,
486 [EXIT_REASON_VM_DESTROY
] = handle_vm_shutdown
,
487 [EXIT_REASON_EXTERNAL_INTERRUPT
] = handle_external_interrupt
,
488 [EXIT_REASON_IPI
] = handle_ipi
,
489 [EXIT_REASON_PTC_G
] = handle_global_purge
,
493 static const int kvm_vti_max_exit_handlers
=
494 sizeof(kvm_vti_exit_handlers
)/sizeof(*kvm_vti_exit_handlers
);
496 static uint32_t kvm_get_exit_reason(struct kvm_vcpu
*vcpu
)
498 struct exit_ctl_data
*p_exit_data
;
500 p_exit_data
= kvm_get_exit_data(vcpu
);
501 return p_exit_data
->exit_reason
;
505 * The guest has exited. See if we can fix it or if we need userspace
508 static int kvm_handle_exit(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
510 u32 exit_reason
= kvm_get_exit_reason(vcpu
);
511 vcpu
->arch
.last_exit
= exit_reason
;
513 if (exit_reason
< kvm_vti_max_exit_handlers
514 && kvm_vti_exit_handlers
[exit_reason
])
515 return kvm_vti_exit_handlers
[exit_reason
](vcpu
, kvm_run
);
517 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
518 kvm_run
->hw
.hardware_exit_reason
= exit_reason
;
523 static inline void vti_set_rr6(unsigned long rr6
)
525 ia64_set_rr(RR6
, rr6
);
529 static int kvm_insert_vmm_mapping(struct kvm_vcpu
*vcpu
)
532 struct kvm
*kvm
= vcpu
->kvm
;
535 /*Insert a pair of tr to map vmm*/
536 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
), PAGE_KERNEL
));
537 r
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
540 vcpu
->arch
.vmm_tr_slot
= r
;
541 /*Insert a pairt of tr to map data of vm*/
542 pte
= pte_val(mk_pte_phys(__pa(kvm
->arch
.vm_base
), PAGE_KERNEL
));
543 r
= ia64_itr_entry(0x3, KVM_VM_DATA_BASE
,
544 pte
, KVM_VM_DATA_SHIFT
);
547 vcpu
->arch
.vm_tr_slot
= r
;
554 static void kvm_purge_vmm_mapping(struct kvm_vcpu
*vcpu
)
557 ia64_ptr_entry(0x3, vcpu
->arch
.vmm_tr_slot
);
558 ia64_ptr_entry(0x3, vcpu
->arch
.vm_tr_slot
);
562 static int kvm_vcpu_pre_transition(struct kvm_vcpu
*vcpu
)
564 int cpu
= smp_processor_id();
566 if (vcpu
->arch
.last_run_cpu
!= cpu
||
567 per_cpu(last_vcpu
, cpu
) != vcpu
) {
568 per_cpu(last_vcpu
, cpu
) = vcpu
;
569 vcpu
->arch
.last_run_cpu
= cpu
;
573 vcpu
->arch
.host_rr6
= ia64_get_rr(RR6
);
574 vti_set_rr6(vcpu
->arch
.vmm_rr
);
575 return kvm_insert_vmm_mapping(vcpu
);
577 static void kvm_vcpu_post_transition(struct kvm_vcpu
*vcpu
)
579 kvm_purge_vmm_mapping(vcpu
);
580 vti_set_rr6(vcpu
->arch
.host_rr6
);
583 static int vti_vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
585 union context
*host_ctx
, *guest_ctx
;
588 /*Get host and guest context with guest address space.*/
589 host_ctx
= kvm_get_host_context(vcpu
);
590 guest_ctx
= kvm_get_guest_context(vcpu
);
592 r
= kvm_vcpu_pre_transition(vcpu
);
595 kvm_vmm_info
->tramp_entry(host_ctx
, guest_ctx
);
596 kvm_vcpu_post_transition(vcpu
);
602 static int __vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
610 if (signal_pending(current
)) {
614 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
618 vcpu
->guest_mode
= 1;
620 down_read(&vcpu
->kvm
->slots_lock
);
621 r
= vti_vcpu_run(vcpu
, kvm_run
);
625 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
629 vcpu
->arch
.launched
= 1;
630 vcpu
->guest_mode
= 0;
634 * We must have an instruction between local_irq_enable() and
635 * kvm_guest_exit(), so the timer interrupt isn't delayed by
636 * the interrupt shadow. The stat.exits increment will do nicely.
637 * But we need to prevent reordering, hence this barrier():
641 up_read(&vcpu
->kvm
->slots_lock
);
644 r
= kvm_handle_exit(kvm_run
, vcpu
);
660 static void kvm_set_mmio_data(struct kvm_vcpu
*vcpu
)
662 struct kvm_mmio_req
*p
= kvm_get_vcpu_ioreq(vcpu
);
664 if (!vcpu
->mmio_is_write
)
665 memcpy(&p
->data
, vcpu
->mmio_data
, 8);
666 p
->state
= STATE_IORESP_READY
;
669 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
676 if (vcpu
->sigset_active
)
677 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
679 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
680 kvm_vcpu_block(vcpu
);
681 clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
);
686 if (vcpu
->mmio_needed
) {
687 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
688 kvm_set_mmio_data(vcpu
);
689 vcpu
->mmio_read_completed
= 1;
690 vcpu
->mmio_needed
= 0;
692 r
= __vcpu_run(vcpu
, kvm_run
);
694 if (vcpu
->sigset_active
)
695 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
702 * Allocate 16M memory for every vm to hold its specific data.
703 * Its memory map is defined in kvm_host.h.
705 static struct kvm
*kvm_alloc_kvm(void)
711 vm_base
= __get_free_pages(GFP_KERNEL
, get_order(KVM_VM_DATA_SIZE
));
714 return ERR_PTR(-ENOMEM
);
715 printk(KERN_DEBUG
"kvm: VM data's base Address:0x%lx\n", vm_base
);
717 /* Zero all pages before use! */
718 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
720 kvm
= (struct kvm
*)(vm_base
+ KVM_VM_OFS
);
721 kvm
->arch
.vm_base
= vm_base
;
726 struct kvm_io_range
{
732 static const struct kvm_io_range io_ranges
[] = {
733 {VGA_IO_START
, VGA_IO_SIZE
, GPFN_FRAME_BUFFER
},
734 {MMIO_START
, MMIO_SIZE
, GPFN_LOW_MMIO
},
735 {LEGACY_IO_START
, LEGACY_IO_SIZE
, GPFN_LEGACY_IO
},
736 {IO_SAPIC_START
, IO_SAPIC_SIZE
, GPFN_IOSAPIC
},
737 {PIB_START
, PIB_SIZE
, GPFN_PIB
},
740 static void kvm_build_io_pmt(struct kvm
*kvm
)
744 /* Mark I/O ranges */
745 for (i
= 0; i
< (sizeof(io_ranges
) / sizeof(struct kvm_io_range
));
747 for (j
= io_ranges
[i
].start
;
748 j
< io_ranges
[i
].start
+ io_ranges
[i
].size
;
750 kvm_set_pmt_entry(kvm
, j
>> PAGE_SHIFT
,
751 io_ranges
[i
].type
, 0);
756 /*Use unused rids to virtualize guest rid.*/
757 #define GUEST_PHYSICAL_RR0 0x1739
758 #define GUEST_PHYSICAL_RR4 0x2739
759 #define VMM_INIT_RR 0x1660
761 static void kvm_init_vm(struct kvm
*kvm
)
767 kvm
->arch
.metaphysical_rr0
= GUEST_PHYSICAL_RR0
;
768 kvm
->arch
.metaphysical_rr4
= GUEST_PHYSICAL_RR4
;
769 kvm
->arch
.vmm_init_rr
= VMM_INIT_RR
;
771 vm_base
= kvm
->arch
.vm_base
;
773 kvm
->arch
.vhpt_base
= vm_base
+ KVM_VHPT_OFS
;
774 kvm
->arch
.vtlb_base
= vm_base
+ KVM_VTLB_OFS
;
775 kvm
->arch
.vpd_base
= vm_base
+ KVM_VPD_OFS
;
779 *Fill P2M entries for MMIO/IO ranges
781 kvm_build_io_pmt(kvm
);
783 INIT_LIST_HEAD(&kvm
->arch
.assigned_dev_head
);
785 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
786 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID
, &kvm
->arch
.irq_sources_bitmap
);
789 struct kvm
*kvm_arch_create_vm(void)
791 struct kvm
*kvm
= kvm_alloc_kvm();
794 return ERR_PTR(-ENOMEM
);
801 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
,
802 struct kvm_irqchip
*chip
)
807 switch (chip
->chip_id
) {
808 case KVM_IRQCHIP_IOAPIC
:
809 memcpy(&chip
->chip
.ioapic
, ioapic_irqchip(kvm
),
810 sizeof(struct kvm_ioapic_state
));
819 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
824 switch (chip
->chip_id
) {
825 case KVM_IRQCHIP_IOAPIC
:
826 memcpy(ioapic_irqchip(kvm
),
828 sizeof(struct kvm_ioapic_state
));
837 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
839 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
842 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
847 for (i
= 0; i
< 16; i
++) {
848 vpd
->vgr
[i
] = regs
->vpd
.vgr
[i
];
849 vpd
->vbgr
[i
] = regs
->vpd
.vbgr
[i
];
851 for (i
= 0; i
< 128; i
++)
852 vpd
->vcr
[i
] = regs
->vpd
.vcr
[i
];
853 vpd
->vhpi
= regs
->vpd
.vhpi
;
854 vpd
->vnat
= regs
->vpd
.vnat
;
855 vpd
->vbnat
= regs
->vpd
.vbnat
;
856 vpd
->vpsr
= regs
->vpd
.vpsr
;
858 vpd
->vpr
= regs
->vpd
.vpr
;
861 r
= copy_from_user(&vcpu
->arch
.guest
, regs
->saved_guest
,
862 sizeof(union context
));
865 r
= copy_from_user(vcpu
+ 1, regs
->saved_stack
+
866 sizeof(struct kvm_vcpu
),
867 IA64_STK_OFFSET
- sizeof(struct kvm_vcpu
));
870 vcpu
->arch
.exit_data
=
871 ((struct kvm_vcpu
*)(regs
->saved_stack
))->arch
.exit_data
;
873 RESTORE_REGS(mp_state
);
874 RESTORE_REGS(vmm_rr
);
875 memcpy(vcpu
->arch
.itrs
, regs
->itrs
, sizeof(struct thash_data
) * NITRS
);
876 memcpy(vcpu
->arch
.dtrs
, regs
->dtrs
, sizeof(struct thash_data
) * NDTRS
);
877 RESTORE_REGS(itr_regions
);
878 RESTORE_REGS(dtr_regions
);
879 RESTORE_REGS(tc_regions
);
880 RESTORE_REGS(irq_check
);
881 RESTORE_REGS(itc_check
);
882 RESTORE_REGS(timer_check
);
883 RESTORE_REGS(timer_pending
);
884 RESTORE_REGS(last_itc
);
885 for (i
= 0; i
< 8; i
++) {
886 vcpu
->arch
.vrr
[i
] = regs
->vrr
[i
];
887 vcpu
->arch
.ibr
[i
] = regs
->ibr
[i
];
888 vcpu
->arch
.dbr
[i
] = regs
->dbr
[i
];
890 for (i
= 0; i
< 4; i
++)
891 vcpu
->arch
.insvc
[i
] = regs
->insvc
[i
];
893 RESTORE_REGS(metaphysical_rr0
);
894 RESTORE_REGS(metaphysical_rr4
);
895 RESTORE_REGS(metaphysical_saved_rr0
);
896 RESTORE_REGS(metaphysical_saved_rr4
);
897 RESTORE_REGS(fp_psr
);
898 RESTORE_REGS(saved_gp
);
900 vcpu
->arch
.irq_new_pending
= 1;
901 vcpu
->arch
.itc_offset
= regs
->saved_itc
- ia64_getreg(_IA64_REG_AR_ITC
);
902 set_bit(KVM_REQ_RESUME
, &vcpu
->requests
);
910 long kvm_arch_vm_ioctl(struct file
*filp
,
911 unsigned int ioctl
, unsigned long arg
)
913 struct kvm
*kvm
= filp
->private_data
;
914 void __user
*argp
= (void __user
*)arg
;
918 case KVM_SET_MEMORY_REGION
: {
919 struct kvm_memory_region kvm_mem
;
920 struct kvm_userspace_memory_region kvm_userspace_mem
;
923 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
925 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
926 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
927 kvm_userspace_mem
.guest_phys_addr
=
928 kvm_mem
.guest_phys_addr
;
929 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
930 r
= kvm_vm_ioctl_set_memory_region(kvm
,
931 &kvm_userspace_mem
, 0);
936 case KVM_CREATE_IRQCHIP
:
938 r
= kvm_ioapic_init(kvm
);
943 struct kvm_irq_level irq_event
;
946 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
948 if (irqchip_in_kernel(kvm
)) {
949 mutex_lock(&kvm
->lock
);
950 kvm_set_irq(kvm
, KVM_USERSPACE_IRQ_SOURCE_ID
,
951 irq_event
.irq
, irq_event
.level
);
952 mutex_unlock(&kvm
->lock
);
957 case KVM_GET_IRQCHIP
: {
958 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
959 struct kvm_irqchip chip
;
962 if (copy_from_user(&chip
, argp
, sizeof chip
))
965 if (!irqchip_in_kernel(kvm
))
967 r
= kvm_vm_ioctl_get_irqchip(kvm
, &chip
);
971 if (copy_to_user(argp
, &chip
, sizeof chip
))
976 case KVM_SET_IRQCHIP
: {
977 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
978 struct kvm_irqchip chip
;
981 if (copy_from_user(&chip
, argp
, sizeof chip
))
984 if (!irqchip_in_kernel(kvm
))
986 r
= kvm_vm_ioctl_set_irqchip(kvm
, &chip
);
999 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
1000 struct kvm_sregs
*sregs
)
1005 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
1006 struct kvm_sregs
*sregs
)
1011 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1012 struct kvm_translation
*tr
)
1018 static int kvm_alloc_vmm_area(void)
1020 if (!kvm_vmm_base
&& (kvm_vm_buffer_size
< KVM_VM_BUFFER_SIZE
)) {
1021 kvm_vmm_base
= __get_free_pages(GFP_KERNEL
,
1022 get_order(KVM_VMM_SIZE
));
1026 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1027 kvm_vm_buffer
= kvm_vmm_base
+ VMM_SIZE
;
1029 printk(KERN_DEBUG
"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1030 kvm_vmm_base
, kvm_vm_buffer
);
1036 static void kvm_free_vmm_area(void)
1039 /*Zero this area before free to avoid bits leak!!*/
1040 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1041 free_pages(kvm_vmm_base
, get_order(KVM_VMM_SIZE
));
1048 static void vti_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1052 static int vti_init_vpd(struct kvm_vcpu
*vcpu
)
1055 union cpuid3_t cpuid3
;
1056 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1059 return PTR_ERR(vpd
);
1062 for (i
= 0; i
< 5; i
++)
1063 vpd
->vcpuid
[i
] = ia64_get_cpuid(i
);
1065 /* Limit the CPUID number to 5 */
1066 cpuid3
.value
= vpd
->vcpuid
[3];
1067 cpuid3
.number
= 4; /* 5 - 1 */
1068 vpd
->vcpuid
[3] = cpuid3
.value
;
1070 /*Set vac and vdc fields*/
1071 vpd
->vac
.a_from_int_cr
= 1;
1072 vpd
->vac
.a_to_int_cr
= 1;
1073 vpd
->vac
.a_from_psr
= 1;
1074 vpd
->vac
.a_from_cpuid
= 1;
1075 vpd
->vac
.a_cover
= 1;
1078 vpd
->vdc
.d_vmsw
= 1;
1080 /*Set virtual buffer*/
1081 vpd
->virt_env_vaddr
= KVM_VM_BUFFER_BASE
;
1086 static int vti_create_vp(struct kvm_vcpu
*vcpu
)
1089 struct vpd
*vpd
= vcpu
->arch
.vpd
;
1090 unsigned long vmm_ivt
;
1092 vmm_ivt
= kvm_vmm_info
->vmm_ivt
;
1094 printk(KERN_DEBUG
"kvm: vcpu:%p,ivt: 0x%lx\n", vcpu
, vmm_ivt
);
1096 ret
= ia64_pal_vp_create((u64
*)vpd
, (u64
*)vmm_ivt
, 0);
1099 printk(KERN_ERR
"kvm: ia64_pal_vp_create failed!\n");
1105 static void init_ptce_info(struct kvm_vcpu
*vcpu
)
1107 ia64_ptce_info_t ptce
= {0};
1109 ia64_get_ptce(&ptce
);
1110 vcpu
->arch
.ptce_base
= ptce
.base
;
1111 vcpu
->arch
.ptce_count
[0] = ptce
.count
[0];
1112 vcpu
->arch
.ptce_count
[1] = ptce
.count
[1];
1113 vcpu
->arch
.ptce_stride
[0] = ptce
.stride
[0];
1114 vcpu
->arch
.ptce_stride
[1] = ptce
.stride
[1];
1117 static void kvm_migrate_hlt_timer(struct kvm_vcpu
*vcpu
)
1119 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
1121 if (hrtimer_cancel(p_ht
))
1122 hrtimer_start_expires(p_ht
, HRTIMER_MODE_ABS
);
1125 static enum hrtimer_restart
hlt_timer_fn(struct hrtimer
*data
)
1127 struct kvm_vcpu
*vcpu
;
1128 wait_queue_head_t
*q
;
1130 vcpu
= container_of(data
, struct kvm_vcpu
, arch
.hlt_timer
);
1133 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_HALTED
)
1136 if (waitqueue_active(q
))
1137 wake_up_interruptible(q
);
1140 vcpu
->arch
.timer_fired
= 1;
1141 vcpu
->arch
.timer_check
= 1;
1142 return HRTIMER_NORESTART
;
1145 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1147 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
1153 struct kvm
*kvm
= vcpu
->kvm
;
1154 struct kvm_pt_regs
*regs
= vcpu_regs(vcpu
);
1156 union context
*p_ctx
= &vcpu
->arch
.guest
;
1157 struct kvm_vcpu
*vmm_vcpu
= to_guest(vcpu
->kvm
, vcpu
);
1159 /*Init vcpu context for first run.*/
1160 if (IS_ERR(vmm_vcpu
))
1161 return PTR_ERR(vmm_vcpu
);
1163 if (vcpu
->vcpu_id
== 0) {
1164 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1166 /*Set entry address for first run.*/
1167 regs
->cr_iip
= PALE_RESET_ENTRY
;
1169 /*Initilize itc offset for vcpus*/
1170 itc_offset
= 0UL - ia64_getreg(_IA64_REG_AR_ITC
);
1171 for (i
= 0; i
< MAX_VCPU_NUM
; i
++) {
1172 v
= (struct kvm_vcpu
*)((char *)vcpu
+ VCPU_SIZE
* i
);
1173 v
->arch
.itc_offset
= itc_offset
;
1174 v
->arch
.last_itc
= 0;
1177 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
1180 vcpu
->arch
.apic
= kzalloc(sizeof(struct kvm_lapic
), GFP_KERNEL
);
1181 if (!vcpu
->arch
.apic
)
1183 vcpu
->arch
.apic
->vcpu
= vcpu
;
1186 p_ctx
->gr
[12] = (unsigned long)((char *)vmm_vcpu
+ IA64_STK_OFFSET
);
1187 p_ctx
->gr
[13] = (unsigned long)vmm_vcpu
;
1188 p_ctx
->psr
= 0x1008522000UL
;
1189 p_ctx
->ar
[40] = FPSR_DEFAULT
; /*fpsr*/
1190 p_ctx
->caller_unat
= 0;
1192 p_ctx
->ar
[36] = 0x0; /*unat*/
1193 p_ctx
->ar
[19] = 0x0; /*rnat*/
1194 p_ctx
->ar
[18] = (unsigned long)vmm_vcpu
+
1195 ((sizeof(struct kvm_vcpu
)+15) & ~15);
1196 p_ctx
->ar
[64] = 0x0; /*pfs*/
1197 p_ctx
->cr
[0] = 0x7e04UL
;
1198 p_ctx
->cr
[2] = (unsigned long)kvm_vmm_info
->vmm_ivt
;
1199 p_ctx
->cr
[8] = 0x3c;
1201 /*Initilize region register*/
1202 p_ctx
->rr
[0] = 0x30;
1203 p_ctx
->rr
[1] = 0x30;
1204 p_ctx
->rr
[2] = 0x30;
1205 p_ctx
->rr
[3] = 0x30;
1206 p_ctx
->rr
[4] = 0x30;
1207 p_ctx
->rr
[5] = 0x30;
1208 p_ctx
->rr
[7] = 0x30;
1210 /*Initilize branch register 0*/
1211 p_ctx
->br
[0] = *(unsigned long *)kvm_vmm_info
->vmm_entry
;
1213 vcpu
->arch
.vmm_rr
= kvm
->arch
.vmm_init_rr
;
1214 vcpu
->arch
.metaphysical_rr0
= kvm
->arch
.metaphysical_rr0
;
1215 vcpu
->arch
.metaphysical_rr4
= kvm
->arch
.metaphysical_rr4
;
1217 hrtimer_init(&vcpu
->arch
.hlt_timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
1218 vcpu
->arch
.hlt_timer
.function
= hlt_timer_fn
;
1220 vcpu
->arch
.last_run_cpu
= -1;
1221 vcpu
->arch
.vpd
= (struct vpd
*)VPD_ADDR(vcpu
->vcpu_id
);
1222 vcpu
->arch
.vsa_base
= kvm_vsa_base
;
1223 vcpu
->arch
.__gp
= kvm_vmm_gp
;
1224 vcpu
->arch
.dirty_log_lock_pa
= __pa(&kvm
->arch
.dirty_log_lock
);
1225 vcpu
->arch
.vhpt
.hash
= (struct thash_data
*)VHPT_ADDR(vcpu
->vcpu_id
);
1226 vcpu
->arch
.vtlb
.hash
= (struct thash_data
*)VTLB_ADDR(vcpu
->vcpu_id
);
1227 init_ptce_info(vcpu
);
1234 static int vti_vcpu_setup(struct kvm_vcpu
*vcpu
, int id
)
1239 local_irq_save(psr
);
1240 r
= kvm_insert_vmm_mapping(vcpu
);
1243 r
= kvm_vcpu_init(vcpu
, vcpu
->kvm
, id
);
1247 r
= vti_init_vpd(vcpu
);
1249 printk(KERN_DEBUG
"kvm: vpd init error!!\n");
1253 r
= vti_create_vp(vcpu
);
1257 kvm_purge_vmm_mapping(vcpu
);
1258 local_irq_restore(psr
);
1262 kvm_vcpu_uninit(vcpu
);
1264 local_irq_restore(psr
);
1268 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
1271 struct kvm_vcpu
*vcpu
;
1272 unsigned long vm_base
= kvm
->arch
.vm_base
;
1278 printk(KERN_ERR
"kvm: Create vcpu[%d] error!\n", id
);
1281 vcpu
= (struct kvm_vcpu
*)(vm_base
+ KVM_VCPU_OFS
+ VCPU_SIZE
* id
);
1285 vti_vcpu_load(vcpu
, cpu
);
1286 r
= vti_vcpu_setup(vcpu
, id
);
1290 printk(KERN_DEBUG
"kvm: vcpu_setup error!!\n");
1299 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1304 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1309 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1314 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
1315 struct kvm_debug_guest
*dbg
)
1320 static void free_kvm(struct kvm
*kvm
)
1322 unsigned long vm_base
= kvm
->arch
.vm_base
;
1325 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
1326 free_pages(vm_base
, get_order(KVM_VM_DATA_SIZE
));
1331 static void kvm_release_vm_pages(struct kvm
*kvm
)
1333 struct kvm_memory_slot
*memslot
;
1335 unsigned long base_gfn
;
1337 for (i
= 0; i
< kvm
->nmemslots
; i
++) {
1338 memslot
= &kvm
->memslots
[i
];
1339 base_gfn
= memslot
->base_gfn
;
1341 for (j
= 0; j
< memslot
->npages
; j
++) {
1342 if (memslot
->rmap
[j
])
1343 put_page((struct page
*)memslot
->rmap
[j
]);
1348 void kvm_arch_destroy_vm(struct kvm
*kvm
)
1350 kvm_iommu_unmap_guest(kvm
);
1351 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
1352 kvm_free_all_assigned_devices(kvm
);
1354 kfree(kvm
->arch
.vioapic
);
1355 kvm_release_vm_pages(kvm
);
1356 kvm_free_physmem(kvm
);
1360 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1364 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1366 if (cpu
!= vcpu
->cpu
) {
1368 if (vcpu
->arch
.ht_active
)
1369 kvm_migrate_hlt_timer(vcpu
);
1373 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1375 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1379 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1382 for (i
= 0; i
< 16; i
++) {
1383 regs
->vpd
.vgr
[i
] = vpd
->vgr
[i
];
1384 regs
->vpd
.vbgr
[i
] = vpd
->vbgr
[i
];
1386 for (i
= 0; i
< 128; i
++)
1387 regs
->vpd
.vcr
[i
] = vpd
->vcr
[i
];
1388 regs
->vpd
.vhpi
= vpd
->vhpi
;
1389 regs
->vpd
.vnat
= vpd
->vnat
;
1390 regs
->vpd
.vbnat
= vpd
->vbnat
;
1391 regs
->vpd
.vpsr
= vpd
->vpsr
;
1392 regs
->vpd
.vpr
= vpd
->vpr
;
1395 r
= copy_to_user(regs
->saved_guest
, &vcpu
->arch
.guest
,
1396 sizeof(union context
));
1399 r
= copy_to_user(regs
->saved_stack
, (void *)vcpu
, IA64_STK_OFFSET
);
1402 SAVE_REGS(mp_state
);
1404 memcpy(regs
->itrs
, vcpu
->arch
.itrs
, sizeof(struct thash_data
) * NITRS
);
1405 memcpy(regs
->dtrs
, vcpu
->arch
.dtrs
, sizeof(struct thash_data
) * NDTRS
);
1406 SAVE_REGS(itr_regions
);
1407 SAVE_REGS(dtr_regions
);
1408 SAVE_REGS(tc_regions
);
1409 SAVE_REGS(irq_check
);
1410 SAVE_REGS(itc_check
);
1411 SAVE_REGS(timer_check
);
1412 SAVE_REGS(timer_pending
);
1413 SAVE_REGS(last_itc
);
1414 for (i
= 0; i
< 8; i
++) {
1415 regs
->vrr
[i
] = vcpu
->arch
.vrr
[i
];
1416 regs
->ibr
[i
] = vcpu
->arch
.ibr
[i
];
1417 regs
->dbr
[i
] = vcpu
->arch
.dbr
[i
];
1419 for (i
= 0; i
< 4; i
++)
1420 regs
->insvc
[i
] = vcpu
->arch
.insvc
[i
];
1421 regs
->saved_itc
= vcpu
->arch
.itc_offset
+ ia64_getreg(_IA64_REG_AR_ITC
);
1423 SAVE_REGS(metaphysical_rr0
);
1424 SAVE_REGS(metaphysical_rr4
);
1425 SAVE_REGS(metaphysical_saved_rr0
);
1426 SAVE_REGS(metaphysical_saved_rr4
);
1428 SAVE_REGS(saved_gp
);
1435 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1438 hrtimer_cancel(&vcpu
->arch
.hlt_timer
);
1439 kfree(vcpu
->arch
.apic
);
1443 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1444 unsigned int ioctl
, unsigned long arg
)
1449 int kvm_arch_set_memory_region(struct kvm
*kvm
,
1450 struct kvm_userspace_memory_region
*mem
,
1451 struct kvm_memory_slot old
,
1456 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
1457 struct kvm_memory_slot
*memslot
= &kvm
->memslots
[mem
->slot
];
1458 unsigned long base_gfn
= memslot
->base_gfn
;
1460 for (i
= 0; i
< npages
; i
++) {
1461 pfn
= gfn_to_pfn(kvm
, base_gfn
+ i
);
1462 if (!kvm_is_mmio_pfn(pfn
)) {
1463 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1465 _PAGE_AR_RWX
| _PAGE_MA_WB
);
1466 memslot
->rmap
[i
] = (unsigned long)pfn_to_page(pfn
);
1468 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1469 GPFN_PHYS_MMIO
| (pfn
<< PAGE_SHIFT
),
1471 memslot
->rmap
[i
] = 0;
1478 void kvm_arch_flush_shadow(struct kvm
*kvm
)
1482 long kvm_arch_dev_ioctl(struct file
*filp
,
1483 unsigned int ioctl
, unsigned long arg
)
1488 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
1490 kvm_vcpu_uninit(vcpu
);
1493 static int vti_cpu_has_kvm_support(void)
1495 long avail
= 1, status
= 1, control
= 1;
1498 ret
= ia64_pal_proc_get_features(&avail
, &status
, &control
, 0);
1502 if (!(avail
& PAL_PROC_VM_BIT
))
1505 printk(KERN_DEBUG
"kvm: Hardware Supports VT\n");
1507 ret
= ia64_pal_vp_env_info(&kvm_vm_buffer_size
, &vp_env_info
);
1510 printk(KERN_DEBUG
"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size
);
1512 if (!(vp_env_info
& VP_OPCODE
)) {
1513 printk(KERN_WARNING
"kvm: No opcode ability on hardware, "
1514 "vm_env_info:0x%lx\n", vp_env_info
);
1522 static int kvm_relocate_vmm(struct kvm_vmm_info
*vmm_info
,
1523 struct module
*module
)
1525 unsigned long module_base
;
1526 unsigned long vmm_size
;
1528 unsigned long vmm_offset
, func_offset
, fdesc_offset
;
1529 struct fdesc
*p_fdesc
;
1533 if (!kvm_vmm_base
) {
1534 printk("kvm: kvm area hasn't been initilized yet!!\n");
1538 /*Calculate new position of relocated vmm module.*/
1539 module_base
= (unsigned long)module
->module_core
;
1540 vmm_size
= module
->core_size
;
1541 if (unlikely(vmm_size
> KVM_VMM_SIZE
))
1544 memcpy((void *)kvm_vmm_base
, (void *)module_base
, vmm_size
);
1545 kvm_flush_icache(kvm_vmm_base
, vmm_size
);
1547 /*Recalculate kvm_vmm_info based on new VMM*/
1548 vmm_offset
= vmm_info
->vmm_ivt
- module_base
;
1549 kvm_vmm_info
->vmm_ivt
= KVM_VMM_BASE
+ vmm_offset
;
1550 printk(KERN_DEBUG
"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1551 kvm_vmm_info
->vmm_ivt
);
1553 fdesc_offset
= (unsigned long)vmm_info
->vmm_entry
- module_base
;
1554 kvm_vmm_info
->vmm_entry
= (kvm_vmm_entry
*)(KVM_VMM_BASE
+
1556 func_offset
= *(unsigned long *)vmm_info
->vmm_entry
- module_base
;
1557 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1558 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1559 p_fdesc
->gp
= KVM_VMM_BASE
+(p_fdesc
->gp
- module_base
);
1561 printk(KERN_DEBUG
"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1562 KVM_VMM_BASE
+func_offset
);
1564 fdesc_offset
= (unsigned long)vmm_info
->tramp_entry
- module_base
;
1565 kvm_vmm_info
->tramp_entry
= (kvm_tramp_entry
*)(KVM_VMM_BASE
+
1567 func_offset
= *(unsigned long *)vmm_info
->tramp_entry
- module_base
;
1568 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1569 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1570 p_fdesc
->gp
= KVM_VMM_BASE
+ (p_fdesc
->gp
- module_base
);
1572 kvm_vmm_gp
= p_fdesc
->gp
;
1574 printk(KERN_DEBUG
"kvm: Relocated VMM's Entry IP:%p\n",
1575 kvm_vmm_info
->vmm_entry
);
1576 printk(KERN_DEBUG
"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1577 KVM_VMM_BASE
+ func_offset
);
1582 int kvm_arch_init(void *opaque
)
1585 struct kvm_vmm_info
*vmm_info
= (struct kvm_vmm_info
*)opaque
;
1587 if (!vti_cpu_has_kvm_support()) {
1588 printk(KERN_ERR
"kvm: No Hardware Virtualization Support!\n");
1594 printk(KERN_ERR
"kvm: Already loaded VMM module!\n");
1600 kvm_vmm_info
= kzalloc(sizeof(struct kvm_vmm_info
), GFP_KERNEL
);
1604 if (kvm_alloc_vmm_area())
1607 r
= kvm_relocate_vmm(vmm_info
, vmm_info
->module
);
1614 kvm_free_vmm_area();
1616 kfree(kvm_vmm_info
);
1621 void kvm_arch_exit(void)
1623 kvm_free_vmm_area();
1624 kfree(kvm_vmm_info
);
1625 kvm_vmm_info
= NULL
;
1628 static int kvm_ia64_sync_dirty_log(struct kvm
*kvm
,
1629 struct kvm_dirty_log
*log
)
1631 struct kvm_memory_slot
*memslot
;
1634 unsigned long *dirty_bitmap
= (unsigned long *)((void *)kvm
- KVM_VM_OFS
1635 + KVM_MEM_DIRTY_LOG_OFS
);
1638 if (log
->slot
>= KVM_MEMORY_SLOTS
)
1641 memslot
= &kvm
->memslots
[log
->slot
];
1643 if (!memslot
->dirty_bitmap
)
1646 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1647 base
= memslot
->base_gfn
/ BITS_PER_LONG
;
1649 for (i
= 0; i
< n
/sizeof(long); ++i
) {
1650 memslot
->dirty_bitmap
[i
] = dirty_bitmap
[base
+ i
];
1651 dirty_bitmap
[base
+ i
] = 0;
1658 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
1659 struct kvm_dirty_log
*log
)
1663 struct kvm_memory_slot
*memslot
;
1666 spin_lock(&kvm
->arch
.dirty_log_lock
);
1668 r
= kvm_ia64_sync_dirty_log(kvm
, log
);
1672 r
= kvm_get_dirty_log(kvm
, log
, &is_dirty
);
1676 /* If nothing is dirty, don't bother messing with page tables. */
1678 kvm_flush_remote_tlbs(kvm
);
1679 memslot
= &kvm
->memslots
[log
->slot
];
1680 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1681 memset(memslot
->dirty_bitmap
, 0, n
);
1685 spin_unlock(&kvm
->arch
.dirty_log_lock
);
1689 int kvm_arch_hardware_setup(void)
1694 void kvm_arch_hardware_unsetup(void)
1698 static void vcpu_kick_intr(void *info
)
1701 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)info
;
1702 printk(KERN_DEBUG
"vcpu_kick_intr %p \n", vcpu
);
1706 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
1708 int ipi_pcpu
= vcpu
->cpu
;
1709 int cpu
= get_cpu();
1711 if (waitqueue_active(&vcpu
->wq
))
1712 wake_up_interruptible(&vcpu
->wq
);
1714 if (vcpu
->guest_mode
&& cpu
!= ipi_pcpu
)
1715 smp_call_function_single(ipi_pcpu
, vcpu_kick_intr
, vcpu
, 0);
1719 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, u8 vec
, u8 trig
)
1722 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1724 if (!test_and_set_bit(vec
, &vpd
->irr
[0])) {
1725 vcpu
->arch
.irq_new_pending
= 1;
1726 kvm_vcpu_kick(vcpu
);
1732 int kvm_apic_match_physical_addr(struct kvm_lapic
*apic
, u16 dest
)
1734 return apic
->vcpu
->vcpu_id
== dest
;
1737 int kvm_apic_match_logical_addr(struct kvm_lapic
*apic
, u8 mda
)
1742 struct kvm_vcpu
*kvm_get_lowest_prio_vcpu(struct kvm
*kvm
, u8 vector
,
1743 unsigned long bitmap
)
1745 struct kvm_vcpu
*lvcpu
= kvm
->vcpus
[0];
1748 for (i
= 1; i
< KVM_MAX_VCPUS
; i
++) {
1751 if (lvcpu
->arch
.xtp
> kvm
->vcpus
[i
]->arch
.xtp
)
1752 lvcpu
= kvm
->vcpus
[i
];
1758 static int find_highest_bits(int *dat
)
1763 /* loop for all 256 bits */
1764 for (i
= 7; i
>= 0 ; i
--) {
1768 return i
* 32 + bitnum
- 1;
1775 int kvm_highest_pending_irq(struct kvm_vcpu
*vcpu
)
1777 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1779 if (vpd
->irr
[0] & (1UL << NMI_VECTOR
))
1781 if (vpd
->irr
[0] & (1UL << ExtINT_VECTOR
))
1782 return ExtINT_VECTOR
;
1784 return find_highest_bits((int *)&vpd
->irr
[0]);
1787 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
)
1789 if (kvm_highest_pending_irq(vcpu
) != -1)
1794 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
1796 return vcpu
->arch
.timer_fired
;
1799 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
1804 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
1806 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
;
1809 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1810 struct kvm_mp_state
*mp_state
)
1813 mp_state
->mp_state
= vcpu
->arch
.mp_state
;
1818 static int vcpu_reset(struct kvm_vcpu
*vcpu
)
1822 local_irq_save(psr
);
1823 r
= kvm_insert_vmm_mapping(vcpu
);
1827 vcpu
->arch
.launched
= 0;
1828 kvm_arch_vcpu_uninit(vcpu
);
1829 r
= kvm_arch_vcpu_init(vcpu
);
1833 kvm_purge_vmm_mapping(vcpu
);
1836 local_irq_restore(psr
);
1840 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1841 struct kvm_mp_state
*mp_state
)
1846 vcpu
->arch
.mp_state
= mp_state
->mp_state
;
1847 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)
1848 r
= vcpu_reset(vcpu
);