2 * kvm_ia64.c: Basic KVM suppport On Itanium series processors
5 * Copyright (C) 2007, Intel Corporation.
6 * Xiantao Zhang (xiantao.zhang@intel.com)
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
19 * Place - Suite 330, Boston, MA 02111-1307 USA.
23 #include <linux/module.h>
24 #include <linux/errno.h>
25 #include <linux/percpu.h>
26 #include <linux/gfp.h>
28 #include <linux/smp.h>
29 #include <linux/kvm_host.h>
30 #include <linux/kvm.h>
31 #include <linux/bitops.h>
32 #include <linux/hrtimer.h>
33 #include <linux/uaccess.h>
35 #include <asm/pgtable.h>
36 #include <asm/gcc_intrin.h>
38 #include <asm/cacheflush.h>
39 #include <asm/div64.h>
49 static unsigned long kvm_vmm_base
;
50 static unsigned long kvm_vsa_base
;
51 static unsigned long kvm_vm_buffer
;
52 static unsigned long kvm_vm_buffer_size
;
53 unsigned long kvm_vmm_gp
;
55 static long vp_env_info
;
57 static struct kvm_vmm_info
*kvm_vmm_info
;
59 static DEFINE_PER_CPU(struct kvm_vcpu
*, last_vcpu
);
61 struct kvm_stats_debugfs_item debugfs_entries
[] = {
65 static void kvm_flush_icache(unsigned long start
, unsigned long len
)
69 for (l
= 0; l
< (len
+ 32); l
+= 32)
76 static void kvm_flush_tlb_all(void)
78 unsigned long i
, j
, count0
, count1
, stride0
, stride1
, addr
;
81 addr
= local_cpu_data
->ptce_base
;
82 count0
= local_cpu_data
->ptce_count
[0];
83 count1
= local_cpu_data
->ptce_count
[1];
84 stride0
= local_cpu_data
->ptce_stride
[0];
85 stride1
= local_cpu_data
->ptce_stride
[1];
87 local_irq_save(flags
);
88 for (i
= 0; i
< count0
; ++i
) {
89 for (j
= 0; j
< count1
; ++j
) {
95 local_irq_restore(flags
);
96 ia64_srlz_i(); /* srlz.i implies srlz.d */
99 long ia64_pal_vp_create(u64
*vpd
, u64
*host_iva
, u64
*opt_handler
)
101 struct ia64_pal_retval iprv
;
103 PAL_CALL_STK(iprv
, PAL_VP_CREATE
, (u64
)vpd
, (u64
)host_iva
,
109 static DEFINE_SPINLOCK(vp_lock
);
111 void kvm_arch_hardware_enable(void *garbage
)
116 unsigned long saved_psr
;
119 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
121 local_irq_save(saved_psr
);
122 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
123 local_irq_restore(saved_psr
);
128 status
= ia64_pal_vp_init_env(kvm_vsa_base
?
129 VP_INIT_ENV
: VP_INIT_ENV_INITALIZE
,
130 __pa(kvm_vm_buffer
), KVM_VM_BUFFER_BASE
, &tmp_base
);
132 printk(KERN_WARNING
"kvm: Failed to Enable VT Support!!!!\n");
137 kvm_vsa_base
= tmp_base
;
138 printk(KERN_INFO
"kvm: kvm_vsa_base:0x%lx\n", kvm_vsa_base
);
140 spin_unlock(&vp_lock
);
141 ia64_ptr_entry(0x3, slot
);
144 void kvm_arch_hardware_disable(void *garbage
)
150 unsigned long saved_psr
;
151 unsigned long host_iva
= ia64_getreg(_IA64_REG_CR_IVA
);
153 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
),
156 local_irq_save(saved_psr
);
157 slot
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
158 local_irq_restore(saved_psr
);
162 status
= ia64_pal_vp_exit_env(host_iva
);
164 printk(KERN_DEBUG
"kvm: Failed to disable VT support! :%ld\n",
166 ia64_ptr_entry(0x3, slot
);
169 void kvm_arch_check_processor_compat(void *rtn
)
174 int kvm_dev_ioctl_check_extension(long ext
)
180 case KVM_CAP_IRQCHIP
:
181 case KVM_CAP_USER_MEMORY
:
182 case KVM_CAP_MP_STATE
:
186 case KVM_CAP_COALESCED_MMIO
:
187 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
196 static struct kvm_io_device
*vcpu_find_mmio_dev(struct kvm_vcpu
*vcpu
,
197 gpa_t addr
, int len
, int is_write
)
199 struct kvm_io_device
*dev
;
201 dev
= kvm_io_bus_find_dev(&vcpu
->kvm
->mmio_bus
, addr
, len
, is_write
);
206 static int handle_vm_error(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
208 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
209 kvm_run
->hw
.hardware_exit_reason
= 1;
213 static int handle_mmio(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
215 struct kvm_mmio_req
*p
;
216 struct kvm_io_device
*mmio_dev
;
218 p
= kvm_get_vcpu_ioreq(vcpu
);
220 if ((p
->addr
& PAGE_MASK
) == IOAPIC_DEFAULT_BASE_ADDRESS
)
222 vcpu
->mmio_needed
= 1;
223 vcpu
->mmio_phys_addr
= kvm_run
->mmio
.phys_addr
= p
->addr
;
224 vcpu
->mmio_size
= kvm_run
->mmio
.len
= p
->size
;
225 vcpu
->mmio_is_write
= kvm_run
->mmio
.is_write
= !p
->dir
;
227 if (vcpu
->mmio_is_write
)
228 memcpy(vcpu
->mmio_data
, &p
->data
, p
->size
);
229 memcpy(kvm_run
->mmio
.data
, &p
->data
, p
->size
);
230 kvm_run
->exit_reason
= KVM_EXIT_MMIO
;
233 mmio_dev
= vcpu_find_mmio_dev(vcpu
, p
->addr
, p
->size
, !p
->dir
);
236 kvm_iodevice_write(mmio_dev
, p
->addr
, p
->size
,
239 kvm_iodevice_read(mmio_dev
, p
->addr
, p
->size
,
243 printk(KERN_ERR
"kvm: No iodevice found! addr:%lx\n", p
->addr
);
244 p
->state
= STATE_IORESP_READY
;
249 static int handle_pal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
251 struct exit_ctl_data
*p
;
253 p
= kvm_get_exit_data(vcpu
);
255 if (p
->exit_reason
== EXIT_REASON_PAL_CALL
)
256 return kvm_pal_emul(vcpu
, kvm_run
);
258 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
259 kvm_run
->hw
.hardware_exit_reason
= 2;
264 static int handle_sal_call(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
266 struct exit_ctl_data
*p
;
268 p
= kvm_get_exit_data(vcpu
);
270 if (p
->exit_reason
== EXIT_REASON_SAL_CALL
) {
274 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
275 kvm_run
->hw
.hardware_exit_reason
= 3;
282 * offset: address offset to IPI space.
283 * value: deliver value.
285 static void vcpu_deliver_ipi(struct kvm_vcpu
*vcpu
, uint64_t dm
,
290 kvm_apic_set_irq(vcpu
, vector
, 0);
293 kvm_apic_set_irq(vcpu
, 2, 0);
296 kvm_apic_set_irq(vcpu
, 0, 0);
301 printk(KERN_ERR
"kvm: Unimplemented Deliver reserved IPI!\n");
306 static struct kvm_vcpu
*lid_to_vcpu(struct kvm
*kvm
, unsigned long id
,
312 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
314 lid
.val
= VCPU_LID(kvm
->vcpus
[i
]);
315 if (lid
.id
== id
&& lid
.eid
== eid
)
316 return kvm
->vcpus
[i
];
323 static int handle_ipi(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
325 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
326 struct kvm_vcpu
*target_vcpu
;
327 struct kvm_pt_regs
*regs
;
328 union ia64_ipi_a addr
= p
->u
.ipi_data
.addr
;
329 union ia64_ipi_d data
= p
->u
.ipi_data
.data
;
331 target_vcpu
= lid_to_vcpu(vcpu
->kvm
, addr
.id
, addr
.eid
);
333 return handle_vm_error(vcpu
, kvm_run
);
335 if (!target_vcpu
->arch
.launched
) {
336 regs
= vcpu_regs(target_vcpu
);
338 regs
->cr_iip
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_ip
;
339 regs
->r1
= vcpu
->kvm
->arch
.rdv_sal_data
.boot_gp
;
341 target_vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
342 if (waitqueue_active(&target_vcpu
->wq
))
343 wake_up_interruptible(&target_vcpu
->wq
);
345 vcpu_deliver_ipi(target_vcpu
, data
.dm
, data
.vector
);
346 if (target_vcpu
!= vcpu
)
347 kvm_vcpu_kick(target_vcpu
);
354 struct kvm_ptc_g ptc_g_data
;
355 struct kvm_vcpu
*vcpu
;
358 static void vcpu_global_purge(void *info
)
360 struct call_data
*p
= (struct call_data
*)info
;
361 struct kvm_vcpu
*vcpu
= p
->vcpu
;
363 if (test_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
))
366 set_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
367 if (vcpu
->arch
.ptc_g_count
< MAX_PTC_G_NUM
) {
368 vcpu
->arch
.ptc_g_data
[vcpu
->arch
.ptc_g_count
++] =
371 clear_bit(KVM_REQ_PTC_G
, &vcpu
->requests
);
372 vcpu
->arch
.ptc_g_count
= 0;
373 set_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
);
377 static int handle_global_purge(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
379 struct exit_ctl_data
*p
= kvm_get_exit_data(vcpu
);
380 struct kvm
*kvm
= vcpu
->kvm
;
381 struct call_data call_data
;
383 call_data
.ptc_g_data
= p
->u
.ptc_g_data
;
385 for (i
= 0; i
< KVM_MAX_VCPUS
; i
++) {
386 if (!kvm
->vcpus
[i
] || kvm
->vcpus
[i
]->arch
.mp_state
==
387 KVM_MP_STATE_UNINITIALIZED
||
388 vcpu
== kvm
->vcpus
[i
])
391 if (waitqueue_active(&kvm
->vcpus
[i
]->wq
))
392 wake_up_interruptible(&kvm
->vcpus
[i
]->wq
);
394 if (kvm
->vcpus
[i
]->cpu
!= -1) {
395 call_data
.vcpu
= kvm
->vcpus
[i
];
396 smp_call_function_single(kvm
->vcpus
[i
]->cpu
,
397 vcpu_global_purge
, &call_data
, 1);
399 printk(KERN_WARNING
"kvm: Uninit vcpu received ipi!\n");
405 static int handle_switch_rr6(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
410 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
415 unsigned long vcpu_now_itc
;
417 unsigned long expires
;
418 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
419 unsigned long cyc_per_usec
= local_cpu_data
->cyc_per_usec
;
420 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
422 vcpu_now_itc
= ia64_getreg(_IA64_REG_AR_ITC
) + vcpu
->arch
.itc_offset
;
424 if (time_after(vcpu_now_itc
, vpd
->itm
)) {
425 vcpu
->arch
.timer_check
= 1;
428 itc_diff
= vpd
->itm
- vcpu_now_itc
;
430 itc_diff
= -itc_diff
;
432 expires
= div64_u64(itc_diff
, cyc_per_usec
);
433 kt
= ktime_set(0, 1000 * expires
);
434 vcpu
->arch
.ht_active
= 1;
435 hrtimer_start(p_ht
, kt
, HRTIMER_MODE_ABS
);
437 if (irqchip_in_kernel(vcpu
->kvm
)) {
438 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
439 kvm_vcpu_block(vcpu
);
440 hrtimer_cancel(p_ht
);
441 vcpu
->arch
.ht_active
= 0;
443 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_RUNNABLE
)
447 printk(KERN_ERR
"kvm: Unsupported userspace halt!");
452 static int handle_vm_shutdown(struct kvm_vcpu
*vcpu
,
453 struct kvm_run
*kvm_run
)
455 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
459 static int handle_external_interrupt(struct kvm_vcpu
*vcpu
,
460 struct kvm_run
*kvm_run
)
465 static int (*kvm_vti_exit_handlers
[])(struct kvm_vcpu
*vcpu
,
466 struct kvm_run
*kvm_run
) = {
467 [EXIT_REASON_VM_PANIC
] = handle_vm_error
,
468 [EXIT_REASON_MMIO_INSTRUCTION
] = handle_mmio
,
469 [EXIT_REASON_PAL_CALL
] = handle_pal_call
,
470 [EXIT_REASON_SAL_CALL
] = handle_sal_call
,
471 [EXIT_REASON_SWITCH_RR6
] = handle_switch_rr6
,
472 [EXIT_REASON_VM_DESTROY
] = handle_vm_shutdown
,
473 [EXIT_REASON_EXTERNAL_INTERRUPT
] = handle_external_interrupt
,
474 [EXIT_REASON_IPI
] = handle_ipi
,
475 [EXIT_REASON_PTC_G
] = handle_global_purge
,
479 static const int kvm_vti_max_exit_handlers
=
480 sizeof(kvm_vti_exit_handlers
)/sizeof(*kvm_vti_exit_handlers
);
482 static void kvm_prepare_guest_switch(struct kvm_vcpu
*vcpu
)
486 static uint32_t kvm_get_exit_reason(struct kvm_vcpu
*vcpu
)
488 struct exit_ctl_data
*p_exit_data
;
490 p_exit_data
= kvm_get_exit_data(vcpu
);
491 return p_exit_data
->exit_reason
;
495 * The guest has exited. See if we can fix it or if we need userspace
498 static int kvm_handle_exit(struct kvm_run
*kvm_run
, struct kvm_vcpu
*vcpu
)
500 u32 exit_reason
= kvm_get_exit_reason(vcpu
);
501 vcpu
->arch
.last_exit
= exit_reason
;
503 if (exit_reason
< kvm_vti_max_exit_handlers
504 && kvm_vti_exit_handlers
[exit_reason
])
505 return kvm_vti_exit_handlers
[exit_reason
](vcpu
, kvm_run
);
507 kvm_run
->exit_reason
= KVM_EXIT_UNKNOWN
;
508 kvm_run
->hw
.hardware_exit_reason
= exit_reason
;
513 static inline void vti_set_rr6(unsigned long rr6
)
515 ia64_set_rr(RR6
, rr6
);
519 static int kvm_insert_vmm_mapping(struct kvm_vcpu
*vcpu
)
522 struct kvm
*kvm
= vcpu
->kvm
;
525 /*Insert a pair of tr to map vmm*/
526 pte
= pte_val(mk_pte_phys(__pa(kvm_vmm_base
), PAGE_KERNEL
));
527 r
= ia64_itr_entry(0x3, KVM_VMM_BASE
, pte
, KVM_VMM_SHIFT
);
530 vcpu
->arch
.vmm_tr_slot
= r
;
531 /*Insert a pairt of tr to map data of vm*/
532 pte
= pte_val(mk_pte_phys(__pa(kvm
->arch
.vm_base
), PAGE_KERNEL
));
533 r
= ia64_itr_entry(0x3, KVM_VM_DATA_BASE
,
534 pte
, KVM_VM_DATA_SHIFT
);
537 vcpu
->arch
.vm_tr_slot
= r
;
544 static void kvm_purge_vmm_mapping(struct kvm_vcpu
*vcpu
)
547 ia64_ptr_entry(0x3, vcpu
->arch
.vmm_tr_slot
);
548 ia64_ptr_entry(0x3, vcpu
->arch
.vm_tr_slot
);
552 static int kvm_vcpu_pre_transition(struct kvm_vcpu
*vcpu
)
554 int cpu
= smp_processor_id();
556 if (vcpu
->arch
.last_run_cpu
!= cpu
||
557 per_cpu(last_vcpu
, cpu
) != vcpu
) {
558 per_cpu(last_vcpu
, cpu
) = vcpu
;
559 vcpu
->arch
.last_run_cpu
= cpu
;
563 vcpu
->arch
.host_rr6
= ia64_get_rr(RR6
);
564 vti_set_rr6(vcpu
->arch
.vmm_rr
);
565 return kvm_insert_vmm_mapping(vcpu
);
567 static void kvm_vcpu_post_transition(struct kvm_vcpu
*vcpu
)
569 kvm_purge_vmm_mapping(vcpu
);
570 vti_set_rr6(vcpu
->arch
.host_rr6
);
573 static int vti_vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
575 union context
*host_ctx
, *guest_ctx
;
578 /*Get host and guest context with guest address space.*/
579 host_ctx
= kvm_get_host_context(vcpu
);
580 guest_ctx
= kvm_get_guest_context(vcpu
);
582 r
= kvm_vcpu_pre_transition(vcpu
);
585 kvm_vmm_info
->tramp_entry(host_ctx
, guest_ctx
);
586 kvm_vcpu_post_transition(vcpu
);
592 static int __vcpu_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
599 kvm_prepare_guest_switch(vcpu
);
602 if (signal_pending(current
)) {
606 kvm_run
->exit_reason
= KVM_EXIT_INTR
;
610 vcpu
->guest_mode
= 1;
613 r
= vti_vcpu_run(vcpu
, kvm_run
);
617 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
621 vcpu
->arch
.launched
= 1;
622 vcpu
->guest_mode
= 0;
626 * We must have an instruction between local_irq_enable() and
627 * kvm_guest_exit(), so the timer interrupt isn't delayed by
628 * the interrupt shadow. The stat.exits increment will do nicely.
629 * But we need to prevent reordering, hence this barrier():
637 r
= kvm_handle_exit(kvm_run
, vcpu
);
653 static void kvm_set_mmio_data(struct kvm_vcpu
*vcpu
)
655 struct kvm_mmio_req
*p
= kvm_get_vcpu_ioreq(vcpu
);
657 if (!vcpu
->mmio_is_write
)
658 memcpy(&p
->data
, vcpu
->mmio_data
, 8);
659 p
->state
= STATE_IORESP_READY
;
662 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
669 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
670 kvm_vcpu_block(vcpu
);
675 if (vcpu
->sigset_active
)
676 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
678 if (vcpu
->mmio_needed
) {
679 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
680 kvm_set_mmio_data(vcpu
);
681 vcpu
->mmio_read_completed
= 1;
682 vcpu
->mmio_needed
= 0;
684 r
= __vcpu_run(vcpu
, kvm_run
);
686 if (vcpu
->sigset_active
)
687 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
694 * Allocate 16M memory for every vm to hold its specific data.
695 * Its memory map is defined in kvm_host.h.
697 static struct kvm
*kvm_alloc_kvm(void)
703 vm_base
= __get_free_pages(GFP_KERNEL
, get_order(KVM_VM_DATA_SIZE
));
706 return ERR_PTR(-ENOMEM
);
707 printk(KERN_DEBUG
"kvm: VM data's base Address:0x%lx\n", vm_base
);
709 /* Zero all pages before use! */
710 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
712 kvm
= (struct kvm
*)(vm_base
+ KVM_VM_OFS
);
713 kvm
->arch
.vm_base
= vm_base
;
718 struct kvm_io_range
{
724 static const struct kvm_io_range io_ranges
[] = {
725 {VGA_IO_START
, VGA_IO_SIZE
, GPFN_FRAME_BUFFER
},
726 {MMIO_START
, MMIO_SIZE
, GPFN_LOW_MMIO
},
727 {LEGACY_IO_START
, LEGACY_IO_SIZE
, GPFN_LEGACY_IO
},
728 {IO_SAPIC_START
, IO_SAPIC_SIZE
, GPFN_IOSAPIC
},
729 {PIB_START
, PIB_SIZE
, GPFN_PIB
},
732 static void kvm_build_io_pmt(struct kvm
*kvm
)
736 /* Mark I/O ranges */
737 for (i
= 0; i
< (sizeof(io_ranges
) / sizeof(struct kvm_io_range
));
739 for (j
= io_ranges
[i
].start
;
740 j
< io_ranges
[i
].start
+ io_ranges
[i
].size
;
742 kvm_set_pmt_entry(kvm
, j
>> PAGE_SHIFT
,
743 io_ranges
[i
].type
, 0);
748 /*Use unused rids to virtualize guest rid.*/
749 #define GUEST_PHYSICAL_RR0 0x1739
750 #define GUEST_PHYSICAL_RR4 0x2739
751 #define VMM_INIT_RR 0x1660
753 static void kvm_init_vm(struct kvm
*kvm
)
759 kvm
->arch
.metaphysical_rr0
= GUEST_PHYSICAL_RR0
;
760 kvm
->arch
.metaphysical_rr4
= GUEST_PHYSICAL_RR4
;
761 kvm
->arch
.vmm_init_rr
= VMM_INIT_RR
;
763 vm_base
= kvm
->arch
.vm_base
;
765 kvm
->arch
.vhpt_base
= vm_base
+ KVM_VHPT_OFS
;
766 kvm
->arch
.vtlb_base
= vm_base
+ KVM_VTLB_OFS
;
767 kvm
->arch
.vpd_base
= vm_base
+ KVM_VPD_OFS
;
771 *Fill P2M entries for MMIO/IO ranges
773 kvm_build_io_pmt(kvm
);
777 struct kvm
*kvm_arch_create_vm(void)
779 struct kvm
*kvm
= kvm_alloc_kvm();
782 return ERR_PTR(-ENOMEM
);
789 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
,
790 struct kvm_irqchip
*chip
)
795 switch (chip
->chip_id
) {
796 case KVM_IRQCHIP_IOAPIC
:
797 memcpy(&chip
->chip
.ioapic
, ioapic_irqchip(kvm
),
798 sizeof(struct kvm_ioapic_state
));
807 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
812 switch (chip
->chip_id
) {
813 case KVM_IRQCHIP_IOAPIC
:
814 memcpy(ioapic_irqchip(kvm
),
816 sizeof(struct kvm_ioapic_state
));
825 #define RESTORE_REGS(_x) vcpu->arch._x = regs->_x
827 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
830 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
835 for (i
= 0; i
< 16; i
++) {
836 vpd
->vgr
[i
] = regs
->vpd
.vgr
[i
];
837 vpd
->vbgr
[i
] = regs
->vpd
.vbgr
[i
];
839 for (i
= 0; i
< 128; i
++)
840 vpd
->vcr
[i
] = regs
->vpd
.vcr
[i
];
841 vpd
->vhpi
= regs
->vpd
.vhpi
;
842 vpd
->vnat
= regs
->vpd
.vnat
;
843 vpd
->vbnat
= regs
->vpd
.vbnat
;
844 vpd
->vpsr
= regs
->vpd
.vpsr
;
846 vpd
->vpr
= regs
->vpd
.vpr
;
849 r
= copy_from_user(&vcpu
->arch
.guest
, regs
->saved_guest
,
850 sizeof(union context
));
853 r
= copy_from_user(vcpu
+ 1, regs
->saved_stack
+
854 sizeof(struct kvm_vcpu
),
855 IA64_STK_OFFSET
- sizeof(struct kvm_vcpu
));
858 vcpu
->arch
.exit_data
=
859 ((struct kvm_vcpu
*)(regs
->saved_stack
))->arch
.exit_data
;
861 RESTORE_REGS(mp_state
);
862 RESTORE_REGS(vmm_rr
);
863 memcpy(vcpu
->arch
.itrs
, regs
->itrs
, sizeof(struct thash_data
) * NITRS
);
864 memcpy(vcpu
->arch
.dtrs
, regs
->dtrs
, sizeof(struct thash_data
) * NDTRS
);
865 RESTORE_REGS(itr_regions
);
866 RESTORE_REGS(dtr_regions
);
867 RESTORE_REGS(tc_regions
);
868 RESTORE_REGS(irq_check
);
869 RESTORE_REGS(itc_check
);
870 RESTORE_REGS(timer_check
);
871 RESTORE_REGS(timer_pending
);
872 RESTORE_REGS(last_itc
);
873 for (i
= 0; i
< 8; i
++) {
874 vcpu
->arch
.vrr
[i
] = regs
->vrr
[i
];
875 vcpu
->arch
.ibr
[i
] = regs
->ibr
[i
];
876 vcpu
->arch
.dbr
[i
] = regs
->dbr
[i
];
878 for (i
= 0; i
< 4; i
++)
879 vcpu
->arch
.insvc
[i
] = regs
->insvc
[i
];
881 RESTORE_REGS(metaphysical_rr0
);
882 RESTORE_REGS(metaphysical_rr4
);
883 RESTORE_REGS(metaphysical_saved_rr0
);
884 RESTORE_REGS(metaphysical_saved_rr4
);
885 RESTORE_REGS(fp_psr
);
886 RESTORE_REGS(saved_gp
);
888 vcpu
->arch
.irq_new_pending
= 1;
889 vcpu
->arch
.itc_offset
= regs
->saved_itc
- ia64_getreg(_IA64_REG_AR_ITC
);
890 set_bit(KVM_REQ_RESUME
, &vcpu
->requests
);
898 long kvm_arch_vm_ioctl(struct file
*filp
,
899 unsigned int ioctl
, unsigned long arg
)
901 struct kvm
*kvm
= filp
->private_data
;
902 void __user
*argp
= (void __user
*)arg
;
906 case KVM_SET_MEMORY_REGION
: {
907 struct kvm_memory_region kvm_mem
;
908 struct kvm_userspace_memory_region kvm_userspace_mem
;
911 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
913 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
914 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
915 kvm_userspace_mem
.guest_phys_addr
=
916 kvm_mem
.guest_phys_addr
;
917 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
918 r
= kvm_vm_ioctl_set_memory_region(kvm
,
919 &kvm_userspace_mem
, 0);
924 case KVM_CREATE_IRQCHIP
:
926 r
= kvm_ioapic_init(kvm
);
931 struct kvm_irq_level irq_event
;
934 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
936 if (irqchip_in_kernel(kvm
)) {
937 mutex_lock(&kvm
->lock
);
938 kvm_ioapic_set_irq(kvm
->arch
.vioapic
,
941 mutex_unlock(&kvm
->lock
);
946 case KVM_GET_IRQCHIP
: {
947 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
948 struct kvm_irqchip chip
;
951 if (copy_from_user(&chip
, argp
, sizeof chip
))
954 if (!irqchip_in_kernel(kvm
))
956 r
= kvm_vm_ioctl_get_irqchip(kvm
, &chip
);
960 if (copy_to_user(argp
, &chip
, sizeof chip
))
965 case KVM_SET_IRQCHIP
: {
966 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
967 struct kvm_irqchip chip
;
970 if (copy_from_user(&chip
, argp
, sizeof chip
))
973 if (!irqchip_in_kernel(kvm
))
975 r
= kvm_vm_ioctl_set_irqchip(kvm
, &chip
);
988 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
989 struct kvm_sregs
*sregs
)
994 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
995 struct kvm_sregs
*sregs
)
1000 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
1001 struct kvm_translation
*tr
)
1007 static int kvm_alloc_vmm_area(void)
1009 if (!kvm_vmm_base
&& (kvm_vm_buffer_size
< KVM_VM_BUFFER_SIZE
)) {
1010 kvm_vmm_base
= __get_free_pages(GFP_KERNEL
,
1011 get_order(KVM_VMM_SIZE
));
1015 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1016 kvm_vm_buffer
= kvm_vmm_base
+ VMM_SIZE
;
1018 printk(KERN_DEBUG
"kvm:VMM's Base Addr:0x%lx, vm_buffer:0x%lx\n",
1019 kvm_vmm_base
, kvm_vm_buffer
);
1025 static void kvm_free_vmm_area(void)
1028 /*Zero this area before free to avoid bits leak!!*/
1029 memset((void *)kvm_vmm_base
, 0, KVM_VMM_SIZE
);
1030 free_pages(kvm_vmm_base
, get_order(KVM_VMM_SIZE
));
1037 static void vti_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1041 static int vti_init_vpd(struct kvm_vcpu
*vcpu
)
1044 union cpuid3_t cpuid3
;
1045 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1048 return PTR_ERR(vpd
);
1051 for (i
= 0; i
< 5; i
++)
1052 vpd
->vcpuid
[i
] = ia64_get_cpuid(i
);
1054 /* Limit the CPUID number to 5 */
1055 cpuid3
.value
= vpd
->vcpuid
[3];
1056 cpuid3
.number
= 4; /* 5 - 1 */
1057 vpd
->vcpuid
[3] = cpuid3
.value
;
1059 /*Set vac and vdc fields*/
1060 vpd
->vac
.a_from_int_cr
= 1;
1061 vpd
->vac
.a_to_int_cr
= 1;
1062 vpd
->vac
.a_from_psr
= 1;
1063 vpd
->vac
.a_from_cpuid
= 1;
1064 vpd
->vac
.a_cover
= 1;
1067 vpd
->vdc
.d_vmsw
= 1;
1069 /*Set virtual buffer*/
1070 vpd
->virt_env_vaddr
= KVM_VM_BUFFER_BASE
;
1075 static int vti_create_vp(struct kvm_vcpu
*vcpu
)
1078 struct vpd
*vpd
= vcpu
->arch
.vpd
;
1079 unsigned long vmm_ivt
;
1081 vmm_ivt
= kvm_vmm_info
->vmm_ivt
;
1083 printk(KERN_DEBUG
"kvm: vcpu:%p,ivt: 0x%lx\n", vcpu
, vmm_ivt
);
1085 ret
= ia64_pal_vp_create((u64
*)vpd
, (u64
*)vmm_ivt
, 0);
1088 printk(KERN_ERR
"kvm: ia64_pal_vp_create failed!\n");
1094 static void init_ptce_info(struct kvm_vcpu
*vcpu
)
1096 ia64_ptce_info_t ptce
= {0};
1098 ia64_get_ptce(&ptce
);
1099 vcpu
->arch
.ptce_base
= ptce
.base
;
1100 vcpu
->arch
.ptce_count
[0] = ptce
.count
[0];
1101 vcpu
->arch
.ptce_count
[1] = ptce
.count
[1];
1102 vcpu
->arch
.ptce_stride
[0] = ptce
.stride
[0];
1103 vcpu
->arch
.ptce_stride
[1] = ptce
.stride
[1];
1106 static void kvm_migrate_hlt_timer(struct kvm_vcpu
*vcpu
)
1108 struct hrtimer
*p_ht
= &vcpu
->arch
.hlt_timer
;
1110 if (hrtimer_cancel(p_ht
))
1111 hrtimer_start(p_ht
, p_ht
->expires
, HRTIMER_MODE_ABS
);
1114 static enum hrtimer_restart
hlt_timer_fn(struct hrtimer
*data
)
1116 struct kvm_vcpu
*vcpu
;
1117 wait_queue_head_t
*q
;
1119 vcpu
= container_of(data
, struct kvm_vcpu
, arch
.hlt_timer
);
1120 if (vcpu
->arch
.mp_state
!= KVM_MP_STATE_HALTED
)
1124 if (waitqueue_active(q
)) {
1125 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1126 wake_up_interruptible(q
);
1129 vcpu
->arch
.timer_check
= 1;
1130 return HRTIMER_NORESTART
;
1133 #define PALE_RESET_ENTRY 0x80000000ffffffb0UL
1135 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
1141 struct kvm
*kvm
= vcpu
->kvm
;
1142 struct kvm_pt_regs
*regs
= vcpu_regs(vcpu
);
1144 union context
*p_ctx
= &vcpu
->arch
.guest
;
1145 struct kvm_vcpu
*vmm_vcpu
= to_guest(vcpu
->kvm
, vcpu
);
1147 /*Init vcpu context for first run.*/
1148 if (IS_ERR(vmm_vcpu
))
1149 return PTR_ERR(vmm_vcpu
);
1151 if (vcpu
->vcpu_id
== 0) {
1152 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1154 /*Set entry address for first run.*/
1155 regs
->cr_iip
= PALE_RESET_ENTRY
;
1157 /*Initilize itc offset for vcpus*/
1158 itc_offset
= 0UL - ia64_getreg(_IA64_REG_AR_ITC
);
1159 for (i
= 0; i
< MAX_VCPU_NUM
; i
++) {
1160 v
= (struct kvm_vcpu
*)((char *)vcpu
+ VCPU_SIZE
* i
);
1161 v
->arch
.itc_offset
= itc_offset
;
1162 v
->arch
.last_itc
= 0;
1165 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
1168 vcpu
->arch
.apic
= kzalloc(sizeof(struct kvm_lapic
), GFP_KERNEL
);
1169 if (!vcpu
->arch
.apic
)
1171 vcpu
->arch
.apic
->vcpu
= vcpu
;
1174 p_ctx
->gr
[12] = (unsigned long)((char *)vmm_vcpu
+ IA64_STK_OFFSET
);
1175 p_ctx
->gr
[13] = (unsigned long)vmm_vcpu
;
1176 p_ctx
->psr
= 0x1008522000UL
;
1177 p_ctx
->ar
[40] = FPSR_DEFAULT
; /*fpsr*/
1178 p_ctx
->caller_unat
= 0;
1180 p_ctx
->ar
[36] = 0x0; /*unat*/
1181 p_ctx
->ar
[19] = 0x0; /*rnat*/
1182 p_ctx
->ar
[18] = (unsigned long)vmm_vcpu
+
1183 ((sizeof(struct kvm_vcpu
)+15) & ~15);
1184 p_ctx
->ar
[64] = 0x0; /*pfs*/
1185 p_ctx
->cr
[0] = 0x7e04UL
;
1186 p_ctx
->cr
[2] = (unsigned long)kvm_vmm_info
->vmm_ivt
;
1187 p_ctx
->cr
[8] = 0x3c;
1189 /*Initilize region register*/
1190 p_ctx
->rr
[0] = 0x30;
1191 p_ctx
->rr
[1] = 0x30;
1192 p_ctx
->rr
[2] = 0x30;
1193 p_ctx
->rr
[3] = 0x30;
1194 p_ctx
->rr
[4] = 0x30;
1195 p_ctx
->rr
[5] = 0x30;
1196 p_ctx
->rr
[7] = 0x30;
1198 /*Initilize branch register 0*/
1199 p_ctx
->br
[0] = *(unsigned long *)kvm_vmm_info
->vmm_entry
;
1201 vcpu
->arch
.vmm_rr
= kvm
->arch
.vmm_init_rr
;
1202 vcpu
->arch
.metaphysical_rr0
= kvm
->arch
.metaphysical_rr0
;
1203 vcpu
->arch
.metaphysical_rr4
= kvm
->arch
.metaphysical_rr4
;
1205 hrtimer_init(&vcpu
->arch
.hlt_timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
1206 vcpu
->arch
.hlt_timer
.function
= hlt_timer_fn
;
1208 vcpu
->arch
.last_run_cpu
= -1;
1209 vcpu
->arch
.vpd
= (struct vpd
*)VPD_ADDR(vcpu
->vcpu_id
);
1210 vcpu
->arch
.vsa_base
= kvm_vsa_base
;
1211 vcpu
->arch
.__gp
= kvm_vmm_gp
;
1212 vcpu
->arch
.dirty_log_lock_pa
= __pa(&kvm
->arch
.dirty_log_lock
);
1213 vcpu
->arch
.vhpt
.hash
= (struct thash_data
*)VHPT_ADDR(vcpu
->vcpu_id
);
1214 vcpu
->arch
.vtlb
.hash
= (struct thash_data
*)VTLB_ADDR(vcpu
->vcpu_id
);
1215 init_ptce_info(vcpu
);
1222 static int vti_vcpu_setup(struct kvm_vcpu
*vcpu
, int id
)
1227 local_irq_save(psr
);
1228 r
= kvm_insert_vmm_mapping(vcpu
);
1231 r
= kvm_vcpu_init(vcpu
, vcpu
->kvm
, id
);
1235 r
= vti_init_vpd(vcpu
);
1237 printk(KERN_DEBUG
"kvm: vpd init error!!\n");
1241 r
= vti_create_vp(vcpu
);
1245 kvm_purge_vmm_mapping(vcpu
);
1246 local_irq_restore(psr
);
1250 kvm_vcpu_uninit(vcpu
);
1252 local_irq_restore(psr
);
1256 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
1259 struct kvm_vcpu
*vcpu
;
1260 unsigned long vm_base
= kvm
->arch
.vm_base
;
1266 printk(KERN_ERR
"kvm: Create vcpu[%d] error!\n", id
);
1269 vcpu
= (struct kvm_vcpu
*)(vm_base
+ KVM_VCPU_OFS
+ VCPU_SIZE
* id
);
1273 vti_vcpu_load(vcpu
, cpu
);
1274 r
= vti_vcpu_setup(vcpu
, id
);
1278 printk(KERN_DEBUG
"kvm: vcpu_setup error!!\n");
1287 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
1292 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1297 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
1302 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
1303 struct kvm_debug_guest
*dbg
)
1308 static void free_kvm(struct kvm
*kvm
)
1310 unsigned long vm_base
= kvm
->arch
.vm_base
;
1313 memset((void *)vm_base
, 0, KVM_VM_DATA_SIZE
);
1314 free_pages(vm_base
, get_order(KVM_VM_DATA_SIZE
));
1319 static void kvm_release_vm_pages(struct kvm
*kvm
)
1321 struct kvm_memory_slot
*memslot
;
1323 unsigned long base_gfn
;
1325 for (i
= 0; i
< kvm
->nmemslots
; i
++) {
1326 memslot
= &kvm
->memslots
[i
];
1327 base_gfn
= memslot
->base_gfn
;
1329 for (j
= 0; j
< memslot
->npages
; j
++) {
1330 if (memslot
->rmap
[j
])
1331 put_page((struct page
*)memslot
->rmap
[j
]);
1336 void kvm_arch_destroy_vm(struct kvm
*kvm
)
1338 kfree(kvm
->arch
.vioapic
);
1339 kvm_release_vm_pages(kvm
);
1340 kvm_free_physmem(kvm
);
1344 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1348 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1350 if (cpu
!= vcpu
->cpu
) {
1352 if (vcpu
->arch
.ht_active
)
1353 kvm_migrate_hlt_timer(vcpu
);
1357 #define SAVE_REGS(_x) regs->_x = vcpu->arch._x
1359 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
1363 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1366 for (i
= 0; i
< 16; i
++) {
1367 regs
->vpd
.vgr
[i
] = vpd
->vgr
[i
];
1368 regs
->vpd
.vbgr
[i
] = vpd
->vbgr
[i
];
1370 for (i
= 0; i
< 128; i
++)
1371 regs
->vpd
.vcr
[i
] = vpd
->vcr
[i
];
1372 regs
->vpd
.vhpi
= vpd
->vhpi
;
1373 regs
->vpd
.vnat
= vpd
->vnat
;
1374 regs
->vpd
.vbnat
= vpd
->vbnat
;
1375 regs
->vpd
.vpsr
= vpd
->vpsr
;
1376 regs
->vpd
.vpr
= vpd
->vpr
;
1379 r
= copy_to_user(regs
->saved_guest
, &vcpu
->arch
.guest
,
1380 sizeof(union context
));
1383 r
= copy_to_user(regs
->saved_stack
, (void *)vcpu
, IA64_STK_OFFSET
);
1386 SAVE_REGS(mp_state
);
1388 memcpy(regs
->itrs
, vcpu
->arch
.itrs
, sizeof(struct thash_data
) * NITRS
);
1389 memcpy(regs
->dtrs
, vcpu
->arch
.dtrs
, sizeof(struct thash_data
) * NDTRS
);
1390 SAVE_REGS(itr_regions
);
1391 SAVE_REGS(dtr_regions
);
1392 SAVE_REGS(tc_regions
);
1393 SAVE_REGS(irq_check
);
1394 SAVE_REGS(itc_check
);
1395 SAVE_REGS(timer_check
);
1396 SAVE_REGS(timer_pending
);
1397 SAVE_REGS(last_itc
);
1398 for (i
= 0; i
< 8; i
++) {
1399 regs
->vrr
[i
] = vcpu
->arch
.vrr
[i
];
1400 regs
->ibr
[i
] = vcpu
->arch
.ibr
[i
];
1401 regs
->dbr
[i
] = vcpu
->arch
.dbr
[i
];
1403 for (i
= 0; i
< 4; i
++)
1404 regs
->insvc
[i
] = vcpu
->arch
.insvc
[i
];
1405 regs
->saved_itc
= vcpu
->arch
.itc_offset
+ ia64_getreg(_IA64_REG_AR_ITC
);
1407 SAVE_REGS(metaphysical_rr0
);
1408 SAVE_REGS(metaphysical_rr4
);
1409 SAVE_REGS(metaphysical_saved_rr0
);
1410 SAVE_REGS(metaphysical_saved_rr4
);
1412 SAVE_REGS(saved_gp
);
1419 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
1422 hrtimer_cancel(&vcpu
->arch
.hlt_timer
);
1423 kfree(vcpu
->arch
.apic
);
1427 long kvm_arch_vcpu_ioctl(struct file
*filp
,
1428 unsigned int ioctl
, unsigned long arg
)
1433 int kvm_arch_set_memory_region(struct kvm
*kvm
,
1434 struct kvm_userspace_memory_region
*mem
,
1435 struct kvm_memory_slot old
,
1440 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
1441 struct kvm_memory_slot
*memslot
= &kvm
->memslots
[mem
->slot
];
1442 unsigned long base_gfn
= memslot
->base_gfn
;
1444 for (i
= 0; i
< npages
; i
++) {
1445 page
= gfn_to_page(kvm
, base_gfn
+ i
);
1446 kvm_set_pmt_entry(kvm
, base_gfn
+ i
,
1447 page_to_pfn(page
) << PAGE_SHIFT
,
1448 _PAGE_AR_RWX
|_PAGE_MA_WB
);
1449 memslot
->rmap
[i
] = (unsigned long)page
;
1455 void kvm_arch_flush_shadow(struct kvm
*kvm
)
1459 long kvm_arch_dev_ioctl(struct file
*filp
,
1460 unsigned int ioctl
, unsigned long arg
)
1465 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
1467 kvm_vcpu_uninit(vcpu
);
1470 static int vti_cpu_has_kvm_support(void)
1472 long avail
= 1, status
= 1, control
= 1;
1475 ret
= ia64_pal_proc_get_features(&avail
, &status
, &control
, 0);
1479 if (!(avail
& PAL_PROC_VM_BIT
))
1482 printk(KERN_DEBUG
"kvm: Hardware Supports VT\n");
1484 ret
= ia64_pal_vp_env_info(&kvm_vm_buffer_size
, &vp_env_info
);
1487 printk(KERN_DEBUG
"kvm: VM Buffer Size:0x%lx\n", kvm_vm_buffer_size
);
1489 if (!(vp_env_info
& VP_OPCODE
)) {
1490 printk(KERN_WARNING
"kvm: No opcode ability on hardware, "
1491 "vm_env_info:0x%lx\n", vp_env_info
);
1499 static int kvm_relocate_vmm(struct kvm_vmm_info
*vmm_info
,
1500 struct module
*module
)
1502 unsigned long module_base
;
1503 unsigned long vmm_size
;
1505 unsigned long vmm_offset
, func_offset
, fdesc_offset
;
1506 struct fdesc
*p_fdesc
;
1510 if (!kvm_vmm_base
) {
1511 printk("kvm: kvm area hasn't been initilized yet!!\n");
1515 /*Calculate new position of relocated vmm module.*/
1516 module_base
= (unsigned long)module
->module_core
;
1517 vmm_size
= module
->core_size
;
1518 if (unlikely(vmm_size
> KVM_VMM_SIZE
))
1521 memcpy((void *)kvm_vmm_base
, (void *)module_base
, vmm_size
);
1522 kvm_flush_icache(kvm_vmm_base
, vmm_size
);
1524 /*Recalculate kvm_vmm_info based on new VMM*/
1525 vmm_offset
= vmm_info
->vmm_ivt
- module_base
;
1526 kvm_vmm_info
->vmm_ivt
= KVM_VMM_BASE
+ vmm_offset
;
1527 printk(KERN_DEBUG
"kvm: Relocated VMM's IVT Base Addr:%lx\n",
1528 kvm_vmm_info
->vmm_ivt
);
1530 fdesc_offset
= (unsigned long)vmm_info
->vmm_entry
- module_base
;
1531 kvm_vmm_info
->vmm_entry
= (kvm_vmm_entry
*)(KVM_VMM_BASE
+
1533 func_offset
= *(unsigned long *)vmm_info
->vmm_entry
- module_base
;
1534 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1535 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1536 p_fdesc
->gp
= KVM_VMM_BASE
+(p_fdesc
->gp
- module_base
);
1538 printk(KERN_DEBUG
"kvm: Relocated VMM's Init Entry Addr:%lx\n",
1539 KVM_VMM_BASE
+func_offset
);
1541 fdesc_offset
= (unsigned long)vmm_info
->tramp_entry
- module_base
;
1542 kvm_vmm_info
->tramp_entry
= (kvm_tramp_entry
*)(KVM_VMM_BASE
+
1544 func_offset
= *(unsigned long *)vmm_info
->tramp_entry
- module_base
;
1545 p_fdesc
= (struct fdesc
*)(kvm_vmm_base
+ fdesc_offset
);
1546 p_fdesc
->ip
= KVM_VMM_BASE
+ func_offset
;
1547 p_fdesc
->gp
= KVM_VMM_BASE
+ (p_fdesc
->gp
- module_base
);
1549 kvm_vmm_gp
= p_fdesc
->gp
;
1551 printk(KERN_DEBUG
"kvm: Relocated VMM's Entry IP:%p\n",
1552 kvm_vmm_info
->vmm_entry
);
1553 printk(KERN_DEBUG
"kvm: Relocated VMM's Trampoline Entry IP:0x%lx\n",
1554 KVM_VMM_BASE
+ func_offset
);
1559 int kvm_arch_init(void *opaque
)
1562 struct kvm_vmm_info
*vmm_info
= (struct kvm_vmm_info
*)opaque
;
1564 if (!vti_cpu_has_kvm_support()) {
1565 printk(KERN_ERR
"kvm: No Hardware Virtualization Support!\n");
1571 printk(KERN_ERR
"kvm: Already loaded VMM module!\n");
1577 kvm_vmm_info
= kzalloc(sizeof(struct kvm_vmm_info
), GFP_KERNEL
);
1581 if (kvm_alloc_vmm_area())
1584 r
= kvm_relocate_vmm(vmm_info
, vmm_info
->module
);
1591 kvm_free_vmm_area();
1593 kfree(kvm_vmm_info
);
1598 void kvm_arch_exit(void)
1600 kvm_free_vmm_area();
1601 kfree(kvm_vmm_info
);
1602 kvm_vmm_info
= NULL
;
1605 static int kvm_ia64_sync_dirty_log(struct kvm
*kvm
,
1606 struct kvm_dirty_log
*log
)
1608 struct kvm_memory_slot
*memslot
;
1611 unsigned long *dirty_bitmap
= (unsigned long *)((void *)kvm
- KVM_VM_OFS
1612 + KVM_MEM_DIRTY_LOG_OFS
);
1615 if (log
->slot
>= KVM_MEMORY_SLOTS
)
1618 memslot
= &kvm
->memslots
[log
->slot
];
1620 if (!memslot
->dirty_bitmap
)
1623 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1624 base
= memslot
->base_gfn
/ BITS_PER_LONG
;
1626 for (i
= 0; i
< n
/sizeof(long); ++i
) {
1627 memslot
->dirty_bitmap
[i
] = dirty_bitmap
[base
+ i
];
1628 dirty_bitmap
[base
+ i
] = 0;
1635 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
1636 struct kvm_dirty_log
*log
)
1640 struct kvm_memory_slot
*memslot
;
1643 spin_lock(&kvm
->arch
.dirty_log_lock
);
1645 r
= kvm_ia64_sync_dirty_log(kvm
, log
);
1649 r
= kvm_get_dirty_log(kvm
, log
, &is_dirty
);
1653 /* If nothing is dirty, don't bother messing with page tables. */
1655 kvm_flush_remote_tlbs(kvm
);
1656 memslot
= &kvm
->memslots
[log
->slot
];
1657 n
= ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
1658 memset(memslot
->dirty_bitmap
, 0, n
);
1662 spin_unlock(&kvm
->arch
.dirty_log_lock
);
1666 int kvm_arch_hardware_setup(void)
1671 void kvm_arch_hardware_unsetup(void)
1675 static void vcpu_kick_intr(void *info
)
1678 struct kvm_vcpu
*vcpu
= (struct kvm_vcpu
*)info
;
1679 printk(KERN_DEBUG
"vcpu_kick_intr %p \n", vcpu
);
1683 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
1685 int ipi_pcpu
= vcpu
->cpu
;
1687 if (waitqueue_active(&vcpu
->wq
))
1688 wake_up_interruptible(&vcpu
->wq
);
1690 if (vcpu
->guest_mode
)
1691 smp_call_function_single(ipi_pcpu
, vcpu_kick_intr
, vcpu
, 0);
1694 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, u8 vec
, u8 trig
)
1697 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1699 if (!test_and_set_bit(vec
, &vpd
->irr
[0])) {
1700 vcpu
->arch
.irq_new_pending
= 1;
1701 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
)
1702 kvm_vcpu_kick(vcpu
);
1703 else if (vcpu
->arch
.mp_state
== KVM_MP_STATE_HALTED
) {
1704 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
1705 if (waitqueue_active(&vcpu
->wq
))
1706 wake_up_interruptible(&vcpu
->wq
);
1713 int kvm_apic_match_physical_addr(struct kvm_lapic
*apic
, u16 dest
)
1715 return apic
->vcpu
->vcpu_id
== dest
;
1718 int kvm_apic_match_logical_addr(struct kvm_lapic
*apic
, u8 mda
)
1723 struct kvm_vcpu
*kvm_get_lowest_prio_vcpu(struct kvm
*kvm
, u8 vector
,
1724 unsigned long bitmap
)
1726 struct kvm_vcpu
*lvcpu
= kvm
->vcpus
[0];
1729 for (i
= 1; i
< KVM_MAX_VCPUS
; i
++) {
1732 if (lvcpu
->arch
.xtp
> kvm
->vcpus
[i
]->arch
.xtp
)
1733 lvcpu
= kvm
->vcpus
[i
];
1739 static int find_highest_bits(int *dat
)
1744 /* loop for all 256 bits */
1745 for (i
= 7; i
>= 0 ; i
--) {
1749 return i
* 32 + bitnum
- 1;
1756 int kvm_highest_pending_irq(struct kvm_vcpu
*vcpu
)
1758 struct vpd
*vpd
= to_host(vcpu
->kvm
, vcpu
->arch
.vpd
);
1760 if (vpd
->irr
[0] & (1UL << NMI_VECTOR
))
1762 if (vpd
->irr
[0] & (1UL << ExtINT_VECTOR
))
1763 return ExtINT_VECTOR
;
1765 return find_highest_bits((int *)&vpd
->irr
[0]);
1768 int kvm_cpu_has_interrupt(struct kvm_vcpu
*vcpu
)
1770 if (kvm_highest_pending_irq(vcpu
) != -1)
1775 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
1780 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
1785 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
1787 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
;
1790 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
1791 struct kvm_mp_state
*mp_state
)
1794 mp_state
->mp_state
= vcpu
->arch
.mp_state
;
1799 static int vcpu_reset(struct kvm_vcpu
*vcpu
)
1803 local_irq_save(psr
);
1804 r
= kvm_insert_vmm_mapping(vcpu
);
1808 vcpu
->arch
.launched
= 0;
1809 kvm_arch_vcpu_uninit(vcpu
);
1810 r
= kvm_arch_vcpu_init(vcpu
);
1814 kvm_purge_vmm_mapping(vcpu
);
1817 local_irq_restore(psr
);
1821 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
1822 struct kvm_mp_state
*mp_state
)
1827 vcpu
->arch
.mp_state
= mp_state
->mp_state
;
1828 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)
1829 r
= vcpu_reset(vcpu
);