2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
21 #include <linux/errno.h>
22 #include <linux/err.h>
23 #include <linux/kvm_host.h>
24 #include <linux/vmalloc.h>
25 #include <linux/hrtimer.h>
27 #include <linux/slab.h>
28 #include <asm/cputable.h>
29 #include <asm/uaccess.h>
30 #include <asm/kvm_ppc.h>
31 #include <asm/tlbflush.h>
32 #include <asm/cputhreads.h>
34 #include "../mm/mmu_decl.h"
36 #define CREATE_TRACE_POINTS
39 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*v
)
41 return !(v
->arch
.shared
->msr
& MSR_WE
) ||
42 !!(v
->arch
.pending_exceptions
) ||
46 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
)
51 int kvmppc_kvm_pv(struct kvm_vcpu
*vcpu
)
53 int nr
= kvmppc_get_gpr(vcpu
, 11);
55 unsigned long __maybe_unused param1
= kvmppc_get_gpr(vcpu
, 3);
56 unsigned long __maybe_unused param2
= kvmppc_get_gpr(vcpu
, 4);
57 unsigned long __maybe_unused param3
= kvmppc_get_gpr(vcpu
, 5);
58 unsigned long __maybe_unused param4
= kvmppc_get_gpr(vcpu
, 6);
61 if (!(vcpu
->arch
.shared
->msr
& MSR_SF
)) {
70 case HC_VENDOR_KVM
| KVM_HC_PPC_MAP_MAGIC_PAGE
:
72 vcpu
->arch
.magic_page_pa
= param1
;
73 vcpu
->arch
.magic_page_ea
= param2
;
75 r2
= KVM_MAGIC_FEAT_SR
| KVM_MAGIC_FEAT_MAS0_TO_SPRG7
;
80 case HC_VENDOR_KVM
| KVM_HC_FEATURES
:
82 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
83 /* XXX Missing magic page on 44x */
84 r2
|= (1 << KVM_FEATURE_MAGIC_PAGE
);
87 /* Second return value is in r4 */
90 r
= HC_EV_UNIMPLEMENTED
;
94 kvmppc_set_gpr(vcpu
, 4, r2
);
99 int kvmppc_sanity_check(struct kvm_vcpu
*vcpu
)
103 /* We have to know what CPU to virtualize */
107 /* PAPR only works with book3s_64 */
108 if ((vcpu
->arch
.cpu_type
!= KVM_CPU_3S_64
) && vcpu
->arch
.papr_enabled
)
111 #ifdef CONFIG_KVM_BOOK3S_64_HV
112 /* HV KVM can only do PAPR mode for now */
113 if (!vcpu
->arch
.papr_enabled
)
117 #ifdef CONFIG_KVM_BOOKE_HV
118 if (!cpu_has_feature(CPU_FTR_EMB_HV
))
126 return r
? 0 : -EINVAL
;
129 int kvmppc_emulate_mmio(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
131 enum emulation_result er
;
134 er
= kvmppc_emulate_instruction(run
, vcpu
);
137 /* Future optimization: only reload non-volatiles if they were
138 * actually modified. */
141 case EMULATE_DO_MMIO
:
142 run
->exit_reason
= KVM_EXIT_MMIO
;
143 /* We must reload nonvolatiles because "update" load/store
144 * instructions modify register state. */
145 /* Future optimization: only reload non-volatiles if they were
146 * actually modified. */
150 /* XXX Deliver Program interrupt to guest. */
151 printk(KERN_EMERG
"%s: emulation failed (%08x)\n", __func__
,
152 kvmppc_get_last_inst(vcpu
));
162 int kvm_arch_hardware_enable(void *garbage
)
167 void kvm_arch_hardware_disable(void *garbage
)
171 int kvm_arch_hardware_setup(void)
176 void kvm_arch_hardware_unsetup(void)
180 void kvm_arch_check_processor_compat(void *rtn
)
182 *(int *)rtn
= kvmppc_core_check_processor_compat();
185 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
)
190 return kvmppc_core_init_vm(kvm
);
193 void kvm_arch_destroy_vm(struct kvm
*kvm
)
196 struct kvm_vcpu
*vcpu
;
198 kvm_for_each_vcpu(i
, vcpu
, kvm
)
199 kvm_arch_vcpu_free(vcpu
);
201 mutex_lock(&kvm
->lock
);
202 for (i
= 0; i
< atomic_read(&kvm
->online_vcpus
); i
++)
203 kvm
->vcpus
[i
] = NULL
;
205 atomic_set(&kvm
->online_vcpus
, 0);
207 kvmppc_core_destroy_vm(kvm
);
209 mutex_unlock(&kvm
->lock
);
212 void kvm_arch_sync_events(struct kvm
*kvm
)
216 int kvm_dev_ioctl_check_extension(long ext
)
222 case KVM_CAP_PPC_BOOKE_SREGS
:
224 case KVM_CAP_PPC_SEGSTATE
:
225 case KVM_CAP_PPC_HIOR
:
226 case KVM_CAP_PPC_PAPR
:
228 case KVM_CAP_PPC_UNSET_IRQ
:
229 case KVM_CAP_PPC_IRQ_LEVEL
:
230 case KVM_CAP_ENABLE_CAP
:
231 case KVM_CAP_ONE_REG
:
234 #ifndef CONFIG_KVM_BOOK3S_64_HV
235 case KVM_CAP_PPC_PAIRED_SINGLES
:
236 case KVM_CAP_PPC_OSI
:
237 case KVM_CAP_PPC_GET_PVINFO
:
238 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
243 case KVM_CAP_COALESCED_MMIO
:
244 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
247 #ifdef CONFIG_PPC_BOOK3S_64
248 case KVM_CAP_SPAPR_TCE
:
251 #endif /* CONFIG_PPC_BOOK3S_64 */
252 #ifdef CONFIG_KVM_BOOK3S_64_HV
253 case KVM_CAP_PPC_SMT
:
254 r
= threads_per_core
;
256 case KVM_CAP_PPC_RMA
:
258 /* PPC970 requires an RMA */
259 if (cpu_has_feature(CPU_FTR_ARCH_201
))
262 case KVM_CAP_SYNC_MMU
:
263 r
= cpu_has_feature(CPU_FTR_ARCH_206
) ? 1 : 0;
266 case KVM_CAP_NR_VCPUS
:
268 * Recommending a number of CPUs is somewhat arbitrary; we
269 * return the number of present CPUs for -HV (since a host
270 * will have secondary threads "offline"), and for other KVM
271 * implementations just count online CPUs.
273 #ifdef CONFIG_KVM_BOOK3S_64_HV
274 r
= num_present_cpus();
276 r
= num_online_cpus();
279 case KVM_CAP_MAX_VCPUS
:
282 #ifdef CONFIG_PPC_BOOK3S_64
283 case KVM_CAP_PPC_GET_SMMU_INFO
:
295 long kvm_arch_dev_ioctl(struct file
*filp
,
296 unsigned int ioctl
, unsigned long arg
)
301 void kvm_arch_free_memslot(struct kvm_memory_slot
*free
,
302 struct kvm_memory_slot
*dont
)
306 int kvm_arch_create_memslot(struct kvm_memory_slot
*slot
, unsigned long npages
)
311 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
312 struct kvm_memory_slot
*memslot
,
313 struct kvm_memory_slot old
,
314 struct kvm_userspace_memory_region
*mem
,
317 return kvmppc_core_prepare_memory_region(kvm
, mem
);
320 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
321 struct kvm_userspace_memory_region
*mem
,
322 struct kvm_memory_slot old
,
325 kvmppc_core_commit_memory_region(kvm
, mem
);
329 void kvm_arch_flush_shadow(struct kvm
*kvm
)
333 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
)
335 struct kvm_vcpu
*vcpu
;
336 vcpu
= kvmppc_core_vcpu_create(kvm
, id
);
338 vcpu
->arch
.wqp
= &vcpu
->wq
;
339 kvmppc_create_vcpu_debugfs(vcpu
, id
);
344 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
)
346 /* Make sure we're not using the vcpu anymore */
347 hrtimer_cancel(&vcpu
->arch
.dec_timer
);
348 tasklet_kill(&vcpu
->arch
.tasklet
);
350 kvmppc_remove_vcpu_debugfs(vcpu
);
351 kvmppc_core_vcpu_free(vcpu
);
354 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
356 kvm_arch_vcpu_free(vcpu
);
359 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
361 return kvmppc_core_pending_dec(vcpu
);
365 * low level hrtimer wake routine. Because this runs in hardirq context
366 * we schedule a tasklet to do the real work.
368 enum hrtimer_restart
kvmppc_decrementer_wakeup(struct hrtimer
*timer
)
370 struct kvm_vcpu
*vcpu
;
372 vcpu
= container_of(timer
, struct kvm_vcpu
, arch
.dec_timer
);
373 tasklet_schedule(&vcpu
->arch
.tasklet
);
375 return HRTIMER_NORESTART
;
378 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
380 hrtimer_init(&vcpu
->arch
.dec_timer
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
381 tasklet_init(&vcpu
->arch
.tasklet
, kvmppc_decrementer_func
, (ulong
)vcpu
);
382 vcpu
->arch
.dec_timer
.function
= kvmppc_decrementer_wakeup
;
383 vcpu
->arch
.dec_expires
= ~(u64
)0;
385 #ifdef CONFIG_KVM_EXIT_TIMING
386 mutex_init(&vcpu
->arch
.exit_timing_lock
);
392 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
394 kvmppc_mmu_destroy(vcpu
);
397 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
401 * vrsave (formerly usprg0) isn't used by Linux, but may
402 * be used by the guest.
404 * On non-booke this is associated with Altivec and
405 * is handled by code in book3s.c.
407 mtspr(SPRN_VRSAVE
, vcpu
->arch
.vrsave
);
409 kvmppc_core_vcpu_load(vcpu
, cpu
);
410 vcpu
->cpu
= smp_processor_id();
413 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
415 kvmppc_core_vcpu_put(vcpu
);
417 vcpu
->arch
.vrsave
= mfspr(SPRN_VRSAVE
);
422 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
423 struct kvm_guest_debug
*dbg
)
428 static void kvmppc_complete_dcr_load(struct kvm_vcpu
*vcpu
,
431 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, run
->dcr
.data
);
434 static void kvmppc_complete_mmio_load(struct kvm_vcpu
*vcpu
,
437 u64
uninitialized_var(gpr
);
439 if (run
->mmio
.len
> sizeof(gpr
)) {
440 printk(KERN_ERR
"bad MMIO length: %d\n", run
->mmio
.len
);
444 if (vcpu
->arch
.mmio_is_bigendian
) {
445 switch (run
->mmio
.len
) {
446 case 8: gpr
= *(u64
*)run
->mmio
.data
; break;
447 case 4: gpr
= *(u32
*)run
->mmio
.data
; break;
448 case 2: gpr
= *(u16
*)run
->mmio
.data
; break;
449 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
452 /* Convert BE data from userland back to LE. */
453 switch (run
->mmio
.len
) {
454 case 4: gpr
= ld_le32((u32
*)run
->mmio
.data
); break;
455 case 2: gpr
= ld_le16((u16
*)run
->mmio
.data
); break;
456 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
460 if (vcpu
->arch
.mmio_sign_extend
) {
461 switch (run
->mmio
.len
) {
476 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
478 switch (vcpu
->arch
.io_gpr
& KVM_MMIO_REG_EXT_MASK
) {
479 case KVM_MMIO_REG_GPR
:
480 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
482 case KVM_MMIO_REG_FPR
:
483 vcpu
->arch
.fpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
485 #ifdef CONFIG_PPC_BOOK3S
486 case KVM_MMIO_REG_QPR
:
487 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
489 case KVM_MMIO_REG_FQPR
:
490 vcpu
->arch
.fpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
491 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
499 int kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
500 unsigned int rt
, unsigned int bytes
, int is_bigendian
)
502 if (bytes
> sizeof(run
->mmio
.data
)) {
503 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
507 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
508 run
->mmio
.len
= bytes
;
509 run
->mmio
.is_write
= 0;
511 vcpu
->arch
.io_gpr
= rt
;
512 vcpu
->arch
.mmio_is_bigendian
= is_bigendian
;
513 vcpu
->mmio_needed
= 1;
514 vcpu
->mmio_is_write
= 0;
515 vcpu
->arch
.mmio_sign_extend
= 0;
517 return EMULATE_DO_MMIO
;
520 /* Same as above, but sign extends */
521 int kvmppc_handle_loads(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
522 unsigned int rt
, unsigned int bytes
, int is_bigendian
)
526 r
= kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_bigendian
);
527 vcpu
->arch
.mmio_sign_extend
= 1;
532 int kvmppc_handle_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
533 u64 val
, unsigned int bytes
, int is_bigendian
)
535 void *data
= run
->mmio
.data
;
537 if (bytes
> sizeof(run
->mmio
.data
)) {
538 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
542 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
543 run
->mmio
.len
= bytes
;
544 run
->mmio
.is_write
= 1;
545 vcpu
->mmio_needed
= 1;
546 vcpu
->mmio_is_write
= 1;
548 /* Store the value at the lowest bytes in 'data'. */
551 case 8: *(u64
*)data
= val
; break;
552 case 4: *(u32
*)data
= val
; break;
553 case 2: *(u16
*)data
= val
; break;
554 case 1: *(u8
*)data
= val
; break;
557 /* Store LE value into 'data'. */
559 case 4: st_le32(data
, val
); break;
560 case 2: st_le16(data
, val
); break;
561 case 1: *(u8
*)data
= val
; break;
565 return EMULATE_DO_MMIO
;
568 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
)
573 if (vcpu
->sigset_active
)
574 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
576 if (vcpu
->mmio_needed
) {
577 if (!vcpu
->mmio_is_write
)
578 kvmppc_complete_mmio_load(vcpu
, run
);
579 vcpu
->mmio_needed
= 0;
580 } else if (vcpu
->arch
.dcr_needed
) {
581 if (!vcpu
->arch
.dcr_is_write
)
582 kvmppc_complete_dcr_load(vcpu
, run
);
583 vcpu
->arch
.dcr_needed
= 0;
584 } else if (vcpu
->arch
.osi_needed
) {
585 u64
*gprs
= run
->osi
.gprs
;
588 for (i
= 0; i
< 32; i
++)
589 kvmppc_set_gpr(vcpu
, i
, gprs
[i
]);
590 vcpu
->arch
.osi_needed
= 0;
591 } else if (vcpu
->arch
.hcall_needed
) {
594 kvmppc_set_gpr(vcpu
, 3, run
->papr_hcall
.ret
);
595 for (i
= 0; i
< 9; ++i
)
596 kvmppc_set_gpr(vcpu
, 4 + i
, run
->papr_hcall
.args
[i
]);
597 vcpu
->arch
.hcall_needed
= 0;
600 r
= kvmppc_vcpu_run(run
, vcpu
);
602 if (vcpu
->sigset_active
)
603 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
608 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu
*vcpu
, struct kvm_interrupt
*irq
)
610 if (irq
->irq
== KVM_INTERRUPT_UNSET
) {
611 kvmppc_core_dequeue_external(vcpu
, irq
);
615 kvmppc_core_queue_external(vcpu
, irq
);
622 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu
*vcpu
,
623 struct kvm_enable_cap
*cap
)
631 case KVM_CAP_PPC_OSI
:
633 vcpu
->arch
.osi_enabled
= true;
635 case KVM_CAP_PPC_PAPR
:
637 vcpu
->arch
.papr_enabled
= true;
639 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
640 case KVM_CAP_SW_TLB
: {
641 struct kvm_config_tlb cfg
;
642 void __user
*user_ptr
= (void __user
*)(uintptr_t)cap
->args
[0];
645 if (copy_from_user(&cfg
, user_ptr
, sizeof(cfg
)))
648 r
= kvm_vcpu_ioctl_config_tlb(vcpu
, &cfg
);
658 r
= kvmppc_sanity_check(vcpu
);
663 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
664 struct kvm_mp_state
*mp_state
)
669 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
670 struct kvm_mp_state
*mp_state
)
675 long kvm_arch_vcpu_ioctl(struct file
*filp
,
676 unsigned int ioctl
, unsigned long arg
)
678 struct kvm_vcpu
*vcpu
= filp
->private_data
;
679 void __user
*argp
= (void __user
*)arg
;
683 case KVM_INTERRUPT
: {
684 struct kvm_interrupt irq
;
686 if (copy_from_user(&irq
, argp
, sizeof(irq
)))
688 r
= kvm_vcpu_ioctl_interrupt(vcpu
, &irq
);
694 struct kvm_enable_cap cap
;
696 if (copy_from_user(&cap
, argp
, sizeof(cap
)))
698 r
= kvm_vcpu_ioctl_enable_cap(vcpu
, &cap
);
702 case KVM_SET_ONE_REG
:
703 case KVM_GET_ONE_REG
:
705 struct kvm_one_reg reg
;
707 if (copy_from_user(®
, argp
, sizeof(reg
)))
709 if (ioctl
== KVM_SET_ONE_REG
)
710 r
= kvm_vcpu_ioctl_set_one_reg(vcpu
, ®
);
712 r
= kvm_vcpu_ioctl_get_one_reg(vcpu
, ®
);
716 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
717 case KVM_DIRTY_TLB
: {
718 struct kvm_dirty_tlb dirty
;
720 if (copy_from_user(&dirty
, argp
, sizeof(dirty
)))
722 r
= kvm_vcpu_ioctl_dirty_tlb(vcpu
, &dirty
);
734 int kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
)
736 return VM_FAULT_SIGBUS
;
739 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo
*pvinfo
)
741 u32 inst_lis
= 0x3c000000;
742 u32 inst_ori
= 0x60000000;
743 u32 inst_nop
= 0x60000000;
744 u32 inst_sc
= 0x44000002;
745 u32 inst_imm_mask
= 0xffff;
748 * The hypercall to get into KVM from within guest context is as
751 * lis r0, r0, KVM_SC_MAGIC_R0@h
752 * ori r0, KVM_SC_MAGIC_R0@l
756 pvinfo
->hcall
[0] = inst_lis
| ((KVM_SC_MAGIC_R0
>> 16) & inst_imm_mask
);
757 pvinfo
->hcall
[1] = inst_ori
| (KVM_SC_MAGIC_R0
& inst_imm_mask
);
758 pvinfo
->hcall
[2] = inst_sc
;
759 pvinfo
->hcall
[3] = inst_nop
;
764 long kvm_arch_vm_ioctl(struct file
*filp
,
765 unsigned int ioctl
, unsigned long arg
)
767 void __user
*argp
= (void __user
*)arg
;
771 case KVM_PPC_GET_PVINFO
: {
772 struct kvm_ppc_pvinfo pvinfo
;
773 memset(&pvinfo
, 0, sizeof(pvinfo
));
774 r
= kvm_vm_ioctl_get_pvinfo(&pvinfo
);
775 if (copy_to_user(argp
, &pvinfo
, sizeof(pvinfo
))) {
782 #ifdef CONFIG_PPC_BOOK3S_64
783 case KVM_CREATE_SPAPR_TCE
: {
784 struct kvm_create_spapr_tce create_tce
;
785 struct kvm
*kvm
= filp
->private_data
;
788 if (copy_from_user(&create_tce
, argp
, sizeof(create_tce
)))
790 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce
);
793 #endif /* CONFIG_PPC_BOOK3S_64 */
795 #ifdef CONFIG_KVM_BOOK3S_64_HV
796 case KVM_ALLOCATE_RMA
: {
797 struct kvm
*kvm
= filp
->private_data
;
798 struct kvm_allocate_rma rma
;
800 r
= kvm_vm_ioctl_allocate_rma(kvm
, &rma
);
801 if (r
>= 0 && copy_to_user(argp
, &rma
, sizeof(rma
)))
805 #endif /* CONFIG_KVM_BOOK3S_64_HV */
807 #ifdef CONFIG_PPC_BOOK3S_64
808 case KVM_PPC_GET_SMMU_INFO
: {
809 struct kvm
*kvm
= filp
->private_data
;
810 struct kvm_ppc_smmu_info info
;
812 memset(&info
, 0, sizeof(info
));
813 r
= kvm_vm_ioctl_get_smmu_info(kvm
, &info
);
814 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
818 #endif /* CONFIG_PPC_BOOK3S_64 */
827 static unsigned long lpid_inuse
[BITS_TO_LONGS(KVMPPC_NR_LPIDS
)];
828 static unsigned long nr_lpids
;
830 long kvmppc_alloc_lpid(void)
835 lpid
= find_first_zero_bit(lpid_inuse
, KVMPPC_NR_LPIDS
);
836 if (lpid
>= nr_lpids
) {
837 pr_err("%s: No LPIDs free\n", __func__
);
840 } while (test_and_set_bit(lpid
, lpid_inuse
));
845 void kvmppc_claim_lpid(long lpid
)
847 set_bit(lpid
, lpid_inuse
);
850 void kvmppc_free_lpid(long lpid
)
852 clear_bit(lpid
, lpid_inuse
);
855 void kvmppc_init_lpid(unsigned long nr_lpids_param
)
857 nr_lpids
= min_t(unsigned long, KVMPPC_NR_LPIDS
, nr_lpids_param
);
858 memset(lpid_inuse
, 0, sizeof(lpid_inuse
));
861 int kvm_arch_init(void *opaque
)
866 void kvm_arch_exit(void)