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
;
388 call_data
.ptc_g_data
= p
->u
.ptc_g_data
;
390 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
391 if (!kvm
->vcpus
[i
] || kvm
->vcpus
[i
]->arch
.mp_state
==
392 KVM_MP_STATE_UNINITIALIZED
||
393 vcpu
== kvm
->vcpus
[i
])
396 if (waitqueue_active(&kvm
->vcpus
[i
]->wq
))
397 wake_up_interruptible(&kvm
->vcpus
[i
]->wq
);
399 if (kvm
->vcpus
[i
]->cpu
!= -1) {
400 call_data
.vcpu
= kvm
->vcpus
[i
];
401 smp_call_function_single(kvm
->vcpus
[i
]->cpu
,
402 vcpu_global_purge
, &call_data
, 1);
404 printk(KERN_WARNING
"kvm: Uninit vcpu received ipi!\n");
410 static int handle_switch_rr6(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
415 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
420 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 vcpu_now_itc
= ia64_getreg(_IA64_REG_AR_ITC
) + vcpu
->arch
.itc_offset
;
429 if (time_after(vcpu_now_itc
, vpd
->itm
)) {
430 vcpu
->arch
.timer_check
= 1;
433 itc_diff
= vpd
->itm
- vcpu_now_itc
;
435 itc_diff
= -itc_diff
;
437 expires
= div64_u64(itc_diff
, cyc_per_usec
);
438 kt
= ktime_set(0, 1000 * expires
);
439 vcpu
->arch
.ht_active
= 1;
440 hrtimer_start(p_ht
, kt
, HRTIMER_MODE_ABS
);
442 if (irqchip_in_kernel(vcpu
->kvm
)) {
443 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
444 kvm_vcpu_block(vcpu
);
445 hrtimer_cancel(p_ht
);
446 vcpu
->arch
.ht_active
= 0;
448 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_RUNNABLE
)
452 printk(KERN_ERR
"kvm: Unsupported userspace halt!");
457 static int handle_vm_shutdown(struct kvm_vcpu
*vcpu
,
458 struct kvm_run
*kvm_run
)
460 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
464 static int handle_external_interrupt(struct kvm_vcpu
*vcpu
,
465 struct kvm_run
*kvm_run
)
470 static int (*kvm_vti_exit_handlers
[])(struct kvm_vcpu
*vcpu
,
471 struct kvm_run
*kvm_run
) = {
472 [EXIT_REASON_VM_PANIC
] = handle_vm_error
,
473 [EXIT_REASON_MMIO_INSTRUCTION
] = handle_mmio
,
474 [EXIT_REASON_PAL_CALL
] = handle_pal_call
,
475 [EXIT_REASON_SAL_CALL
] = handle_sal_call
,
476 [EXIT_REASON_SWITCH_RR6
] = handle_switch_rr6
,
477 [EXIT_REASON_VM_DESTROY
] = handle_vm_shutdown
,
478 [EXIT_REASON_EXTERNAL_INTERRUPT
] = handle_external_interrupt
,
479 [EXIT_REASON_IPI
] = handle_ipi
,
480 [EXIT_REASON_PTC_G
] = handle_global_purge
,
484 static const int kvm_vti_max_exit_handlers
=
485 sizeof(kvm_vti_exit_handlers
)/sizeof(*kvm_vti_exit_handlers
);
487 static void kvm_prepare_guest_switch(struct kvm_vcpu
*vcpu
)
491 static uint32_t kvm_get_exit_reason(struct kvm_vcpu
*vcpu
)
493 struct exit_ctl_data
*p_exit_data
;
495 p_exit_data
= kvm_get_exit_data(vcpu
);
496 return p_exit_data
->exit_reason
;
500 * The guest has exited. See if we can fix it or if we need userspace
503 static int kvm_handle_exit(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
505 u32 exit_reason
= kvm_get_exit_reason(vcpu
);
506 vcpu
->arch
.last_exit
= exit_reason
;
508 if (exit_reason
< kvm_vti_max_exit_handlers
509 && kvm_vti_exit_handlers
[exit_reason
])
510 return kvm_vti_exit_handlers
[exit_reason
](vcpu
, kvm_run
);
512 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
513 kvm_run
->hw
.hardware_exit_reason
= exit_reason
;
518 static inline void vti_set_rr6(unsigned long rr6
)
520 ia64_set_rr(RR6
, rr6
);
524 static int kvm_insert_vmm_mapping(struct kvm_vcpu
*vcpu
)
527 struct kvm
*kvm
= vcpu
->kvm
;
530 /*Insert a pair of tr to map vmm*/
531 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
), PAGE_KERNEL
));
532 r
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
535 vcpu
->arch
.vmm_tr_slot
= r
;
536 /*Insert a pairt of tr to map data of vm*/
537 pte
= pte_val(mk_pte_phys(__pa(kvm
->arch
.vm_base
), PAGE_KERNEL
));
538 r
= ia64_itr_entry(0x3, KVM_VM_DATA_BASE
,
539 pte
, KVM_VM_DATA_SHIFT
);
542 vcpu
->arch
.vm_tr_slot
= r
;
549 static void kvm_purge_vmm_mapping(struct kvm_vcpu
*vcpu
)
552 ia64_ptr_entry(0x3, vcpu
->arch
.vmm_tr_slot
);
553 ia64_ptr_entry(0x3, vcpu
->arch
.vm_tr_slot
);
557 static int kvm_vcpu_pre_transition(struct kvm_vcpu
*vcpu
)
559 int cpu
= smp_processor_id();
561 if (vcpu
->arch
.last_run_cpu
!= cpu
||
562 per_cpu(last_vcpu
, cpu
) != vcpu
) {
563 per_cpu(last_vcpu
, cpu
) = vcpu
;
564 vcpu
->arch
.last_run_cpu
= cpu
;
568 vcpu
->arch
.host_rr6
= ia64_get_rr(RR6
);
569 vti_set_rr6(vcpu
->arch
.vmm_rr
);
570 return kvm_insert_vmm_mapping(vcpu
);
572 static void kvm_vcpu_post_transition(struct kvm_vcpu
*vcpu
)
574 kvm_purge_vmm_mapping(vcpu
);
575 vti_set_rr6(vcpu
->arch
.host_rr6
);
578 static int vti_vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
580 union context
*host_ctx
, *guest_ctx
;
583 /*Get host and guest context with guest address space.*/
584 host_ctx
= kvm_get_host_context(vcpu
);
585 guest_ctx
= kvm_get_guest_context(vcpu
);
587 r
= kvm_vcpu_pre_transition(vcpu
);
590 kvm_vmm_info
->tramp_entry(host_ctx
, guest_ctx
);
591 kvm_vcpu_post_transition(vcpu
);
597 static int __vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
604 kvm_prepare_guest_switch(vcpu
);
607 if (signal_pending(current
)) {
611 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
615 vcpu
->guest_mode
= 1;
618 r
= vti_vcpu_run(vcpu
, kvm_run
);
622 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
626 vcpu
->arch
.launched
= 1;
627 vcpu
->guest_mode
= 0;
631 * We must have an instruction between local_irq_enable() and
632 * kvm_guest_exit(), so the timer interrupt isn't delayed by
633 * the interrupt shadow. The stat.exits increment will do nicely.
634 * But we need to prevent reordering, hence this barrier():
642 r
= kvm_handle_exit(kvm_run
, vcpu
);
658 static void kvm_set_mmio_data(struct kvm_vcpu
*vcpu
)
660 struct kvm_mmio_req
*p
= kvm_get_vcpu_ioreq(vcpu
);
662 if (!vcpu
->mmio_is_write
)
663 memcpy(&p
->data
, vcpu
->mmio_data
, 8);
664 p
->state
= STATE_IORESP_READY
;
667 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
674 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
675 kvm_vcpu_block(vcpu
);
680 if (vcpu
->sigset_active
)
681 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
683 if (vcpu
->mmio_needed
) {
684 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
685 kvm_set_mmio_data(vcpu
);
686 vcpu
->mmio_read_completed
= 1;
687 vcpu
->mmio_needed
= 0;
689 r
= __vcpu_run(vcpu
, kvm_run
);
691 if (vcpu
->sigset_active
)
692 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
699 * Allocate 16M memory for every vm to hold its specific data.
700 * Its memory map is defined in kvm_host.h.
702 static struct kvm
*kvm_alloc_kvm(void)
708 vm_base
= __get_free_pages(GFP_KERNEL
, get_order(KVM_VM_DATA_SIZE
));
711 return ERR_PTR(-ENOMEM
);
712 printk(KERN_DEBUG
"kvm: VM data's base Address:0x%lx\n", vm_base
);
714 /* Zero all pages before use! */
715 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
717 kvm
= (struct kvm
*)(vm_base
+ KVM_VM_OFS
);
718 kvm
->arch
.vm_base
= vm_base
;
723 struct kvm_io_range
{
729 static const struct kvm_io_range io_ranges
[] = {
730 {VGA_IO_START
, VGA_IO_SIZE
, GPFN_FRAME_BUFFER
},
731 {MMIO_START
, MMIO_SIZE
, GPFN_LOW_MMIO
},
732 {LEGACY_IO_START
, LEGACY_IO_SIZE
, GPFN_LEGACY_IO
},
733 {IO_SAPIC_START
, IO_SAPIC_SIZE
, GPFN_IOSAPIC
},
734 {PIB_START
, PIB_SIZE
, GPFN_PIB
},
737 static void kvm_build_io_pmt(struct kvm
*kvm
)
741 /* Mark I/O ranges */
742 for (i
= 0; i
< (sizeof(io_ranges
) / sizeof(struct kvm_io_range
));
744 for (j
= io_ranges
[i
].start
;
745 j
< io_ranges
[i
].start
+ io_ranges
[i
].size
;
747 kvm_set_pmt_entry(kvm
, j
>> PAGE_SHIFT
,
748 io_ranges
[i
].type
, 0);
753 /*Use unused rids to virtualize guest rid.*/
754 #define GUEST_PHYSICAL_RR0 0x1739
755 #define GUEST_PHYSICAL_RR4 0x2739
756 #define VMM_INIT_RR 0x1660
758 static void kvm_init_vm(struct kvm
*kvm
)
764 kvm
->arch
.metaphysical_rr0
= GUEST_PHYSICAL_RR0
;
765 kvm
->arch
.metaphysical_rr4
= GUEST_PHYSICAL_RR4
;
766 kvm
->arch
.vmm_init_rr
= VMM_INIT_RR
;
768 vm_base
= kvm
->arch
.vm_base
;
770 kvm
->arch
.vhpt_base
= vm_base
+ KVM_VHPT_OFS
;
771 kvm
->arch
.vtlb_base
= vm_base
+ KVM_VTLB_OFS
;
772 kvm
->arch
.vpd_base
= vm_base
+ KVM_VPD_OFS
;
776 *Fill P2M entries for MMIO/IO ranges
778 kvm_build_io_pmt(kvm
);
780 INIT_LIST_HEAD(&kvm
->arch
.assigned_dev_head
);
783 struct kvm
*kvm_arch_create_vm(void)
785 struct kvm
*kvm
= kvm_alloc_kvm();
788 return ERR_PTR(-ENOMEM
);
795 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
,
796 struct kvm_irqchip
*chip
)
801 switch (chip
->chip_id
) {
802 case KVM_IRQCHIP_IOAPIC
:
803 memcpy(&chip
->chip
.ioapic
, ioapic_irqchip(kvm
),
804 sizeof(struct kvm_ioapic_state
));
813 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
818 switch (chip
->chip_id
) {
819 case KVM_IRQCHIP_IOAPIC
:
820 memcpy(ioapic_irqchip(kvm
),
822 sizeof(struct kvm_ioapic_state
));
831 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
833 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
836 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
841 for (i
= 0; i
< 16; i
++) {
842 vpd
->vgr
[i
] = regs
->vpd
.vgr
[i
];
843 vpd
->vbgr
[i
] = regs
->vpd
.vbgr
[i
];
845 for (i
= 0; i
< 128; i
++)
846 vpd
->vcr
[i
] = regs
->vpd
.vcr
[i
];
847 vpd
->vhpi
= regs
->vpd
.vhpi
;
848 vpd
->vnat
= regs
->vpd
.vnat
;
849 vpd
->vbnat
= regs
->vpd
.vbnat
;
850 vpd
->vpsr
= regs
->vpd
.vpsr
;
852 vpd
->vpr
= regs
->vpd
.vpr
;
855 r
= copy_from_user(&vcpu
->arch
.guest
, regs
->saved_guest
,
856 sizeof(union context
));
859 r
= copy_from_user(vcpu
+ 1, regs
->saved_stack
+
860 sizeof(struct kvm_vcpu
),
861 IA64_STK_OFFSET
- sizeof(struct kvm_vcpu
));
864 vcpu
->arch
.exit_data
=
865 ((struct kvm_vcpu
*)(regs
->saved_stack
))->arch
.exit_data
;
867 RESTORE_REGS(mp_state
);
868 RESTORE_REGS(vmm_rr
);
869 memcpy(vcpu
->arch
.itrs
, regs
->itrs
, sizeof(struct thash_data
) * NITRS
);
870 memcpy(vcpu
->arch
.dtrs
, regs
->dtrs
, sizeof(struct thash_data
) * NDTRS
);
871 RESTORE_REGS(itr_regions
);
872 RESTORE_REGS(dtr_regions
);
873 RESTORE_REGS(tc_regions
);
874 RESTORE_REGS(irq_check
);
875 RESTORE_REGS(itc_check
);
876 RESTORE_REGS(timer_check
);
877 RESTORE_REGS(timer_pending
);
878 RESTORE_REGS(last_itc
);
879 for (i
= 0; i
< 8; i
++) {
880 vcpu
->arch
.vrr
[i
] = regs
->vrr
[i
];
881 vcpu
->arch
.ibr
[i
] = regs
->ibr
[i
];
882 vcpu
->arch
.dbr
[i
] = regs
->dbr
[i
];
884 for (i
= 0; i
< 4; i
++)
885 vcpu
->arch
.insvc
[i
] = regs
->insvc
[i
];
887 RESTORE_REGS(metaphysical_rr0
);
888 RESTORE_REGS(metaphysical_rr4
);
889 RESTORE_REGS(metaphysical_saved_rr0
);
890 RESTORE_REGS(metaphysical_saved_rr4
);
891 RESTORE_REGS(fp_psr
);
892 RESTORE_REGS(saved_gp
);
894 vcpu
->arch
.irq_new_pending
= 1;
895 vcpu
->arch
.itc_offset
= regs
->saved_itc
- ia64_getreg(_IA64_REG_AR_ITC
);
896 set_bit(KVM_REQ_RESUME
, &vcpu
->requests
);
904 long kvm_arch_vm_ioctl(struct file
*filp
,
905 unsigned int ioctl
, unsigned long arg
)
907 struct kvm
*kvm
= filp
->private_data
;
908 void __user
*argp
= (void __user
*)arg
;
912 case KVM_SET_MEMORY_REGION
: {
913 struct kvm_memory_region kvm_mem
;
914 struct kvm_userspace_memory_region kvm_userspace_mem
;
917 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
919 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
920 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
921 kvm_userspace_mem
.guest_phys_addr
=
922 kvm_mem
.guest_phys_addr
;
923 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
924 r
= kvm_vm_ioctl_set_memory_region(kvm
,
925 &kvm_userspace_mem
, 0);
930 case KVM_CREATE_IRQCHIP
:
932 r
= kvm_ioapic_init(kvm
);
937 struct kvm_irq_level irq_event
;
940 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
942 if (irqchip_in_kernel(kvm
)) {
943 mutex_lock(&kvm
->lock
);
944 kvm_ioapic_set_irq(kvm
->arch
.vioapic
,
947 mutex_unlock(&kvm
->lock
);
952 case KVM_GET_IRQCHIP
: {
953 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
954 struct kvm_irqchip chip
;
957 if (copy_from_user(&chip
, argp
, sizeof chip
))
960 if (!irqchip_in_kernel(kvm
))
962 r
= kvm_vm_ioctl_get_irqchip(kvm
, &chip
);
966 if (copy_to_user(argp
, &chip
, sizeof chip
))
971 case KVM_SET_IRQCHIP
: {
972 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
973 struct kvm_irqchip chip
;
976 if (copy_from_user(&chip
, argp
, sizeof chip
))
979 if (!irqchip_in_kernel(kvm
))
981 r
= kvm_vm_ioctl_set_irqchip(kvm
, &chip
);
994 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
995 struct kvm_sregs
*sregs
)
1000 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
1001 struct kvm_sregs
*sregs
)
1006 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1007 struct kvm_translation
*tr
)
1013 static int kvm_alloc_vmm_area(void)
1015 if (!kvm_vmm_base
&& (kvm_vm_buffer_size
< KVM_VM_BUFFER_SIZE
)) {
1016 kvm_vmm_base
= __get_free_pages(GFP_KERNEL
,
1017 get_order(KVM_VMM_SIZE
));
1021 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1022 kvm_vm_buffer
= kvm_vmm_base
+ VMM_SIZE
;
1024 printk(KERN_DEBUG
"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1025 kvm_vmm_base
, kvm_vm_buffer
);
1031 static void kvm_free_vmm_area(void)
1034 /*Zero this area before free to avoid bits leak!!*/
1035 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1036 free_pages(kvm_vmm_base
, get_order(KVM_VMM_SIZE
));
1043 static void vti_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1047 static int vti_init_vpd(struct kvm_vcpu
*vcpu
)
1050 union cpuid3_t cpuid3
;
1051 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1054 return PTR_ERR(vpd
);
1057 for (i
= 0; i
< 5; i
++)
1058 vpd
->vcpuid
[i
] = ia64_get_cpuid(i
);
1060 /* Limit the CPUID number to 5 */
1061 cpuid3
.value
= vpd
->vcpuid
[3];
1062 cpuid3
.number
= 4; /* 5 - 1 */
1063 vpd
->vcpuid
[3] = cpuid3
.value
;
1065 /*Set vac and vdc fields*/
1066 vpd
->vac
.a_from_int_cr
= 1;
1067 vpd
->vac
.a_to_int_cr
= 1;
1068 vpd
->vac
.a_from_psr
= 1;
1069 vpd
->vac
.a_from_cpuid
= 1;
1070 vpd
->vac
.a_cover
= 1;
1073 vpd
->vdc
.d_vmsw
= 1;
1075 /*Set virtual buffer*/
1076 vpd
->virt_env_vaddr
= KVM_VM_BUFFER_BASE
;
1081 static int vti_create_vp(struct kvm_vcpu
*vcpu
)
1084 struct vpd
*vpd
= vcpu
->arch
.vpd
;
1085 unsigned long vmm_ivt
;
1087 vmm_ivt
= kvm_vmm_info
->vmm_ivt
;
1089 printk(KERN_DEBUG
"kvm: vcpu:%p,ivt: 0x%lx\n", vcpu
, vmm_ivt
);
1091 ret
= ia64_pal_vp_create((u64
*)vpd
, (u64
*)vmm_ivt
, 0);
1094 printk(KERN_ERR
"kvm: ia64_pal_vp_create failed!\n");
1100 static void init_ptce_info(struct kvm_vcpu
*vcpu
)
1102 ia64_ptce_info_t ptce
= {0};
1104 ia64_get_ptce(&ptce
);
1105 vcpu
->arch
.ptce_base
= ptce
.base
;
1106 vcpu
->arch
.ptce_count
[0] = ptce
.count
[0];
1107 vcpu
->arch
.ptce_count
[1] = ptce
.count
[1];
1108 vcpu
->arch
.ptce_stride
[0] = ptce
.stride
[0];
1109 vcpu
->arch
.ptce_stride
[1] = ptce
.stride
[1];
1112 static void kvm_migrate_hlt_timer(struct kvm_vcpu
*vcpu
)
1114 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
1116 if (hrtimer_cancel(p_ht
))
1117 hrtimer_start(p_ht
, p_ht
->expires
, HRTIMER_MODE_ABS
);
1120 static enum hrtimer_restart
hlt_timer_fn(struct hrtimer
*data
)
1122 struct kvm_vcpu
*vcpu
;
1123 wait_queue_head_t
*q
;
1125 vcpu
= container_of(data
, struct kvm_vcpu
, arch
.hlt_timer
);
1126 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_HALTED
)
1130 if (waitqueue_active(q
)) {
1131 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1132 wake_up_interruptible(q
);
1135 vcpu
->arch
.timer_check
= 1;
1136 return HRTIMER_NORESTART
;
1139 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1141 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
1147 struct kvm
*kvm
= vcpu
->kvm
;
1148 struct kvm_pt_regs
*regs
= vcpu_regs(vcpu
);
1150 union context
*p_ctx
= &vcpu
->arch
.guest
;
1151 struct kvm_vcpu
*vmm_vcpu
= to_guest(vcpu
->kvm
, vcpu
);
1153 /*Init vcpu context for first run.*/
1154 if (IS_ERR(vmm_vcpu
))
1155 return PTR_ERR(vmm_vcpu
);
1157 if (vcpu
->vcpu_id
== 0) {
1158 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1160 /*Set entry address for first run.*/
1161 regs
->cr_iip
= PALE_RESET_ENTRY
;
1163 /*Initilize itc offset for vcpus*/
1164 itc_offset
= 0UL - ia64_getreg(_IA64_REG_AR_ITC
);
1165 for (i
= 0; i
< MAX_VCPU_NUM
; i
++) {
1166 v
= (struct kvm_vcpu
*)((char *)vcpu
+ VCPU_SIZE
* i
);
1167 v
->arch
.itc_offset
= itc_offset
;
1168 v
->arch
.last_itc
= 0;
1171 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
1174 vcpu
->arch
.apic
= kzalloc(sizeof(struct kvm_lapic
), GFP_KERNEL
);
1175 if (!vcpu
->arch
.apic
)
1177 vcpu
->arch
.apic
->vcpu
= vcpu
;
1180 p_ctx
->gr
[12] = (unsigned long)((char *)vmm_vcpu
+ IA64_STK_OFFSET
);
1181 p_ctx
->gr
[13] = (unsigned long)vmm_vcpu
;
1182 p_ctx
->psr
= 0x1008522000UL
;
1183 p_ctx
->ar
[40] = FPSR_DEFAULT
; /*fpsr*/
1184 p_ctx
->caller_unat
= 0;
1186 p_ctx
->ar
[36] = 0x0; /*unat*/
1187 p_ctx
->ar
[19] = 0x0; /*rnat*/
1188 p_ctx
->ar
[18] = (unsigned long)vmm_vcpu
+
1189 ((sizeof(struct kvm_vcpu
)+15) & ~15);
1190 p_ctx
->ar
[64] = 0x0; /*pfs*/
1191 p_ctx
->cr
[0] = 0x7e04UL
;
1192 p_ctx
->cr
[2] = (unsigned long)kvm_vmm_info
->vmm_ivt
;
1193 p_ctx
->cr
[8] = 0x3c;
1195 /*Initilize region register*/
1196 p_ctx
->rr
[0] = 0x30;
1197 p_ctx
->rr
[1] = 0x30;
1198 p_ctx
->rr
[2] = 0x30;
1199 p_ctx
->rr
[3] = 0x30;
1200 p_ctx
->rr
[4] = 0x30;
1201 p_ctx
->rr
[5] = 0x30;
1202 p_ctx
->rr
[7] = 0x30;
1204 /*Initilize branch register 0*/
1205 p_ctx
->br
[0] = *(unsigned long *)kvm_vmm_info
->vmm_entry
;
1207 vcpu
->arch
.vmm_rr
= kvm
->arch
.vmm_init_rr
;
1208 vcpu
->arch
.metaphysical_rr0
= kvm
->arch
.metaphysical_rr0
;
1209 vcpu
->arch
.metaphysical_rr4
= kvm
->arch
.metaphysical_rr4
;
1211 hrtimer_init(&vcpu
->arch
.hlt_timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
1212 vcpu
->arch
.hlt_timer
.function
= hlt_timer_fn
;
1214 vcpu
->arch
.last_run_cpu
= -1;
1215 vcpu
->arch
.vpd
= (struct vpd
*)VPD_ADDR(vcpu
->vcpu_id
);
1216 vcpu
->arch
.vsa_base
= kvm_vsa_base
;
1217 vcpu
->arch
.__gp
= kvm_vmm_gp
;
1218 vcpu
->arch
.dirty_log_lock_pa
= __pa(&kvm
->arch
.dirty_log_lock
);
1219 vcpu
->arch
.vhpt
.hash
= (struct thash_data
*)VHPT_ADDR(vcpu
->vcpu_id
);
1220 vcpu
->arch
.vtlb
.hash
= (struct thash_data
*)VTLB_ADDR(vcpu
->vcpu_id
);
1221 init_ptce_info(vcpu
);
1228 static int vti_vcpu_setup(struct kvm_vcpu
*vcpu
, int id
)
1233 local_irq_save(psr
);
1234 r
= kvm_insert_vmm_mapping(vcpu
);
1237 r
= kvm_vcpu_init(vcpu
, vcpu
->kvm
, id
);
1241 r
= vti_init_vpd(vcpu
);
1243 printk(KERN_DEBUG
"kvm: vpd init error!!\n");
1247 r
= vti_create_vp(vcpu
);
1251 kvm_purge_vmm_mapping(vcpu
);
1252 local_irq_restore(psr
);
1256 kvm_vcpu_uninit(vcpu
);
1258 local_irq_restore(psr
);
1262 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
1265 struct kvm_vcpu
*vcpu
;
1266 unsigned long vm_base
= kvm
->arch
.vm_base
;
1272 printk(KERN_ERR
"kvm: Create vcpu[%d] error!\n", id
);
1275 vcpu
= (struct kvm_vcpu
*)(vm_base
+ KVM_VCPU_OFS
+ VCPU_SIZE
* id
);
1279 vti_vcpu_load(vcpu
, cpu
);
1280 r
= vti_vcpu_setup(vcpu
, id
);
1284 printk(KERN_DEBUG
"kvm: vcpu_setup error!!\n");
1293 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1298 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1303 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1308 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
1309 struct kvm_debug_guest
*dbg
)
1314 static void free_kvm(struct kvm
*kvm
)
1316 unsigned long vm_base
= kvm
->arch
.vm_base
;
1319 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
1320 free_pages(vm_base
, get_order(KVM_VM_DATA_SIZE
));
1325 static void kvm_release_vm_pages(struct kvm
*kvm
)
1327 struct kvm_memory_slot
*memslot
;
1329 unsigned long base_gfn
;
1331 for (i
= 0; i
< kvm
->nmemslots
; i
++) {
1332 memslot
= &kvm
->memslots
[i
];
1333 base_gfn
= memslot
->base_gfn
;
1335 for (j
= 0; j
< memslot
->npages
; j
++) {
1336 if (memslot
->rmap
[j
])
1337 put_page((struct page
*)memslot
->rmap
[j
]);
1342 void kvm_arch_destroy_vm(struct kvm
*kvm
)
1344 kvm_iommu_unmap_guest(kvm
);
1345 #ifdef KVM_CAP_DEVICE_ASSIGNMENT
1346 kvm_free_all_assigned_devices(kvm
);
1348 kfree(kvm
->arch
.vioapic
);
1349 kvm_release_vm_pages(kvm
);
1350 kvm_free_physmem(kvm
);
1354 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1358 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1360 if (cpu
!= vcpu
->cpu
) {
1362 if (vcpu
->arch
.ht_active
)
1363 kvm_migrate_hlt_timer(vcpu
);
1367 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1369 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1373 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1376 for (i
= 0; i
< 16; i
++) {
1377 regs
->vpd
.vgr
[i
] = vpd
->vgr
[i
];
1378 regs
->vpd
.vbgr
[i
] = vpd
->vbgr
[i
];
1380 for (i
= 0; i
< 128; i
++)
1381 regs
->vpd
.vcr
[i
] = vpd
->vcr
[i
];
1382 regs
->vpd
.vhpi
= vpd
->vhpi
;
1383 regs
->vpd
.vnat
= vpd
->vnat
;
1384 regs
->vpd
.vbnat
= vpd
->vbnat
;
1385 regs
->vpd
.vpsr
= vpd
->vpsr
;
1386 regs
->vpd
.vpr
= vpd
->vpr
;
1389 r
= copy_to_user(regs
->saved_guest
, &vcpu
->arch
.guest
,
1390 sizeof(union context
));
1393 r
= copy_to_user(regs
->saved_stack
, (void *)vcpu
, IA64_STK_OFFSET
);
1396 SAVE_REGS(mp_state
);
1398 memcpy(regs
->itrs
, vcpu
->arch
.itrs
, sizeof(struct thash_data
) * NITRS
);
1399 memcpy(regs
->dtrs
, vcpu
->arch
.dtrs
, sizeof(struct thash_data
) * NDTRS
);
1400 SAVE_REGS(itr_regions
);
1401 SAVE_REGS(dtr_regions
);
1402 SAVE_REGS(tc_regions
);
1403 SAVE_REGS(irq_check
);
1404 SAVE_REGS(itc_check
);
1405 SAVE_REGS(timer_check
);
1406 SAVE_REGS(timer_pending
);
1407 SAVE_REGS(last_itc
);
1408 for (i
= 0; i
< 8; i
++) {
1409 regs
->vrr
[i
] = vcpu
->arch
.vrr
[i
];
1410 regs
->ibr
[i
] = vcpu
->arch
.ibr
[i
];
1411 regs
->dbr
[i
] = vcpu
->arch
.dbr
[i
];
1413 for (i
= 0; i
< 4; i
++)
1414 regs
->insvc
[i
] = vcpu
->arch
.insvc
[i
];
1415 regs
->saved_itc
= vcpu
->arch
.itc_offset
+ ia64_getreg(_IA64_REG_AR_ITC
);
1417 SAVE_REGS(metaphysical_rr0
);
1418 SAVE_REGS(metaphysical_rr4
);
1419 SAVE_REGS(metaphysical_saved_rr0
);
1420 SAVE_REGS(metaphysical_saved_rr4
);
1422 SAVE_REGS(saved_gp
);
1429 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1432 hrtimer_cancel(&vcpu
->arch
.hlt_timer
);
1433 kfree(vcpu
->arch
.apic
);
1437 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1438 unsigned int ioctl
, unsigned long arg
)
1443 int kvm_arch_set_memory_region(struct kvm
*kvm
,
1444 struct kvm_userspace_memory_region
*mem
,
1445 struct kvm_memory_slot old
,
1450 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
1451 struct kvm_memory_slot
*memslot
= &kvm
->memslots
[mem
->slot
];
1452 unsigned long base_gfn
= memslot
->base_gfn
;
1454 for (i
= 0; i
< npages
; i
++) {
1455 pfn
= gfn_to_pfn(kvm
, base_gfn
+ i
);
1456 if (!kvm_is_mmio_pfn(pfn
)) {
1457 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1459 _PAGE_AR_RWX
| _PAGE_MA_WB
);
1460 memslot
->rmap
[i
] = (unsigned long)pfn_to_page(pfn
);
1462 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1463 GPFN_PHYS_MMIO
| (pfn
<< PAGE_SHIFT
),
1465 memslot
->rmap
[i
] = 0;
1472 void kvm_arch_flush_shadow(struct kvm
*kvm
)
1476 long kvm_arch_dev_ioctl(struct file
*filp
,
1477 unsigned int ioctl
, unsigned long arg
)
1482 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
1484 kvm_vcpu_uninit(vcpu
);
1487 static int vti_cpu_has_kvm_support(void)
1489 long avail
= 1, status
= 1, control
= 1;
1492 ret
= ia64_pal_proc_get_features(&avail
, &status
, &control
, 0);
1496 if (!(avail
& PAL_PROC_VM_BIT
))
1499 printk(KERN_DEBUG
"kvm: Hardware Supports VT\n");
1501 ret
= ia64_pal_vp_env_info(&kvm_vm_buffer_size
, &vp_env_info
);
1504 printk(KERN_DEBUG
"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size
);
1506 if (!(vp_env_info
& VP_OPCODE
)) {
1507 printk(KERN_WARNING
"kvm: No opcode ability on hardware, "
1508 "vm_env_info:0x%lx\n", vp_env_info
);
1516 static int kvm_relocate_vmm(struct kvm_vmm_info
*vmm_info
,
1517 struct module
*module
)
1519 unsigned long module_base
;
1520 unsigned long vmm_size
;
1522 unsigned long vmm_offset
, func_offset
, fdesc_offset
;
1523 struct fdesc
*p_fdesc
;
1527 if (!kvm_vmm_base
) {
1528 printk("kvm: kvm area hasn't been initilized yet!!\n");
1532 /*Calculate new position of relocated vmm module.*/
1533 module_base
= (unsigned long)module
->module_core
;
1534 vmm_size
= module
->core_size
;
1535 if (unlikely(vmm_size
> KVM_VMM_SIZE
))
1538 memcpy((void *)kvm_vmm_base
, (void *)module_base
, vmm_size
);
1539 kvm_flush_icache(kvm_vmm_base
, vmm_size
);
1541 /*Recalculate kvm_vmm_info based on new VMM*/
1542 vmm_offset
= vmm_info
->vmm_ivt
- module_base
;
1543 kvm_vmm_info
->vmm_ivt
= KVM_VMM_BASE
+ vmm_offset
;
1544 printk(KERN_DEBUG
"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1545 kvm_vmm_info
->vmm_ivt
);
1547 fdesc_offset
= (unsigned long)vmm_info
->vmm_entry
- module_base
;
1548 kvm_vmm_info
->vmm_entry
= (kvm_vmm_entry
*)(KVM_VMM_BASE
+
1550 func_offset
= *(unsigned long *)vmm_info
->vmm_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 printk(KERN_DEBUG
"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1556 KVM_VMM_BASE
+func_offset
);
1558 fdesc_offset
= (unsigned long)vmm_info
->tramp_entry
- module_base
;
1559 kvm_vmm_info
->tramp_entry
= (kvm_tramp_entry
*)(KVM_VMM_BASE
+
1561 func_offset
= *(unsigned long *)vmm_info
->tramp_entry
- module_base
;
1562 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1563 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1564 p_fdesc
->gp
= KVM_VMM_BASE
+ (p_fdesc
->gp
- module_base
);
1566 kvm_vmm_gp
= p_fdesc
->gp
;
1568 printk(KERN_DEBUG
"kvm: Relocated VMM's Entry IP:%p\n",
1569 kvm_vmm_info
->vmm_entry
);
1570 printk(KERN_DEBUG
"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1571 KVM_VMM_BASE
+ func_offset
);
1576 int kvm_arch_init(void *opaque
)
1579 struct kvm_vmm_info
*vmm_info
= (struct kvm_vmm_info
*)opaque
;
1581 if (!vti_cpu_has_kvm_support()) {
1582 printk(KERN_ERR
"kvm: No Hardware Virtualization Support!\n");
1588 printk(KERN_ERR
"kvm: Already loaded VMM module!\n");
1594 kvm_vmm_info
= kzalloc(sizeof(struct kvm_vmm_info
), GFP_KERNEL
);
1598 if (kvm_alloc_vmm_area())
1601 r
= kvm_relocate_vmm(vmm_info
, vmm_info
->module
);
1608 kvm_free_vmm_area();
1610 kfree(kvm_vmm_info
);
1615 void kvm_arch_exit(void)
1617 kvm_free_vmm_area();
1618 kfree(kvm_vmm_info
);
1619 kvm_vmm_info
= NULL
;
1622 static int kvm_ia64_sync_dirty_log(struct kvm
*kvm
,
1623 struct kvm_dirty_log
*log
)
1625 struct kvm_memory_slot
*memslot
;
1628 unsigned long *dirty_bitmap
= (unsigned long *)((void *)kvm
- KVM_VM_OFS
1629 + KVM_MEM_DIRTY_LOG_OFS
);
1632 if (log
->slot
>= KVM_MEMORY_SLOTS
)
1635 memslot
= &kvm
->memslots
[log
->slot
];
1637 if (!memslot
->dirty_bitmap
)
1640 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1641 base
= memslot
->base_gfn
/ BITS_PER_LONG
;
1643 for (i
= 0; i
< n
/sizeof(long); ++i
) {
1644 memslot
->dirty_bitmap
[i
] = dirty_bitmap
[base
+ i
];
1645 dirty_bitmap
[base
+ i
] = 0;
1652 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
1653 struct kvm_dirty_log
*log
)
1657 struct kvm_memory_slot
*memslot
;
1660 spin_lock(&kvm
->arch
.dirty_log_lock
);
1662 r
= kvm_ia64_sync_dirty_log(kvm
, log
);
1666 r
= kvm_get_dirty_log(kvm
, log
, &is_dirty
);
1670 /* If nothing is dirty, don't bother messing with page tables. */
1672 kvm_flush_remote_tlbs(kvm
);
1673 memslot
= &kvm
->memslots
[log
->slot
];
1674 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1675 memset(memslot
->dirty_bitmap
, 0, n
);
1679 spin_unlock(&kvm
->arch
.dirty_log_lock
);
1683 int kvm_arch_hardware_setup(void)
1688 void kvm_arch_hardware_unsetup(void)
1692 static void vcpu_kick_intr(void *info
)
1695 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)info
;
1696 printk(KERN_DEBUG
"vcpu_kick_intr %p \n", vcpu
);
1700 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
1702 int ipi_pcpu
= vcpu
->cpu
;
1704 if (waitqueue_active(&vcpu
->wq
))
1705 wake_up_interruptible(&vcpu
->wq
);
1707 if (vcpu
->guest_mode
)
1708 smp_call_function_single(ipi_pcpu
, vcpu_kick_intr
, vcpu
, 0);
1711 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, u8 vec
, u8 trig
)
1714 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1716 if (!test_and_set_bit(vec
, &vpd
->irr
[0])) {
1717 vcpu
->arch
.irq_new_pending
= 1;
1718 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
)
1719 kvm_vcpu_kick(vcpu
);
1720 else if (vcpu
->arch
.mp_state
== KVM_MP_STATE_HALTED
) {
1721 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1722 if (waitqueue_active(&vcpu
->wq
))
1723 wake_up_interruptible(&vcpu
->wq
);
1730 int kvm_apic_match_physical_addr(struct kvm_lapic
*apic
, u16 dest
)
1732 return apic
->vcpu
->vcpu_id
== dest
;
1735 int kvm_apic_match_logical_addr(struct kvm_lapic
*apic
, u8 mda
)
1740 struct kvm_vcpu
*kvm_get_lowest_prio_vcpu(struct kvm
*kvm
, u8 vector
,
1741 unsigned long bitmap
)
1743 struct kvm_vcpu
*lvcpu
= kvm
->vcpus
[0];
1746 for (i
= 1; i
< KVM_MAX_VCPUS
; i
++) {
1749 if (lvcpu
->arch
.xtp
> kvm
->vcpus
[i
]->arch
.xtp
)
1750 lvcpu
= kvm
->vcpus
[i
];
1756 static int find_highest_bits(int *dat
)
1761 /* loop for all 256 bits */
1762 for (i
= 7; i
>= 0 ; i
--) {
1766 return i
* 32 + bitnum
- 1;
1773 int kvm_highest_pending_irq(struct kvm_vcpu
*vcpu
)
1775 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1777 if (vpd
->irr
[0] & (1UL << NMI_VECTOR
))
1779 if (vpd
->irr
[0] & (1UL << ExtINT_VECTOR
))
1780 return ExtINT_VECTOR
;
1782 return find_highest_bits((int *)&vpd
->irr
[0]);
1785 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
)
1787 if (kvm_highest_pending_irq(vcpu
) != -1)
1792 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
1797 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
1802 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
1804 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
;
1807 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1808 struct kvm_mp_state
*mp_state
)
1811 mp_state
->mp_state
= vcpu
->arch
.mp_state
;
1816 static int vcpu_reset(struct kvm_vcpu
*vcpu
)
1820 local_irq_save(psr
);
1821 r
= kvm_insert_vmm_mapping(vcpu
);
1825 vcpu
->arch
.launched
= 0;
1826 kvm_arch_vcpu_uninit(vcpu
);
1827 r
= kvm_arch_vcpu_init(vcpu
);
1831 kvm_purge_vmm_mapping(vcpu
);
1834 local_irq_restore(psr
);
1838 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1839 struct kvm_mp_state
*mp_state
)
1844 vcpu
->arch
.mp_state
= mp_state
->mp_state
;
1845 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)
1846 r
= vcpu_reset(vcpu
);