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de56a948 PM |
1 | /* |
2 | * Copyright 2011 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> | |
3 | * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. | |
4 | * | |
5 | * Authors: | |
6 | * Paul Mackerras <paulus@au1.ibm.com> | |
7 | * Alexander Graf <agraf@suse.de> | |
8 | * Kevin Wolf <mail@kevin-wolf.de> | |
9 | * | |
10 | * Description: KVM functions specific to running on Book 3S | |
11 | * processors in hypervisor mode (specifically POWER7 and later). | |
12 | * | |
13 | * This file is derived from arch/powerpc/kvm/book3s.c, | |
14 | * by Alexander Graf <agraf@suse.de>. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License, version 2, as | |
18 | * published by the Free Software Foundation. | |
19 | */ | |
20 | ||
21 | #include <linux/kvm_host.h> | |
22 | #include <linux/err.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/preempt.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/fs.h> | |
28 | #include <linux/anon_inodes.h> | |
29 | #include <linux/cpumask.h> | |
30 | ||
31 | #include <asm/reg.h> | |
32 | #include <asm/cputable.h> | |
33 | #include <asm/cacheflush.h> | |
34 | #include <asm/tlbflush.h> | |
35 | #include <asm/uaccess.h> | |
36 | #include <asm/io.h> | |
37 | #include <asm/kvm_ppc.h> | |
38 | #include <asm/kvm_book3s.h> | |
39 | #include <asm/mmu_context.h> | |
40 | #include <asm/lppaca.h> | |
41 | #include <asm/processor.h> | |
42 | #include <linux/gfp.h> | |
43 | #include <linux/sched.h> | |
44 | #include <linux/vmalloc.h> | |
45 | #include <linux/highmem.h> | |
46 | ||
47 | /* #define EXIT_DEBUG */ | |
48 | /* #define EXIT_DEBUG_SIMPLE */ | |
49 | /* #define EXIT_DEBUG_INT */ | |
50 | ||
51 | void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
52 | { | |
53 | local_paca->kvm_hstate.kvm_vcpu = vcpu; | |
54 | } | |
55 | ||
56 | void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) | |
57 | { | |
58 | } | |
59 | ||
60 | void kvmppc_vcpu_block(struct kvm_vcpu *vcpu) | |
61 | { | |
62 | u64 now; | |
63 | unsigned long dec_nsec; | |
64 | ||
65 | now = get_tb(); | |
66 | if (now >= vcpu->arch.dec_expires && !kvmppc_core_pending_dec(vcpu)) | |
67 | kvmppc_core_queue_dec(vcpu); | |
68 | if (vcpu->arch.pending_exceptions) | |
69 | return; | |
70 | if (vcpu->arch.dec_expires != ~(u64)0) { | |
71 | dec_nsec = (vcpu->arch.dec_expires - now) * NSEC_PER_SEC / | |
72 | tb_ticks_per_sec; | |
73 | hrtimer_start(&vcpu->arch.dec_timer, ktime_set(0, dec_nsec), | |
74 | HRTIMER_MODE_REL); | |
75 | } | |
76 | ||
77 | kvm_vcpu_block(vcpu); | |
78 | vcpu->stat.halt_wakeup++; | |
79 | ||
80 | if (vcpu->arch.dec_expires != ~(u64)0) | |
81 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); | |
82 | } | |
83 | ||
84 | void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) | |
85 | { | |
86 | vcpu->arch.shregs.msr = msr; | |
87 | } | |
88 | ||
89 | void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) | |
90 | { | |
91 | vcpu->arch.pvr = pvr; | |
92 | } | |
93 | ||
94 | void kvmppc_dump_regs(struct kvm_vcpu *vcpu) | |
95 | { | |
96 | int r; | |
97 | ||
98 | pr_err("vcpu %p (%d):\n", vcpu, vcpu->vcpu_id); | |
99 | pr_err("pc = %.16lx msr = %.16llx trap = %x\n", | |
100 | vcpu->arch.pc, vcpu->arch.shregs.msr, vcpu->arch.trap); | |
101 | for (r = 0; r < 16; ++r) | |
102 | pr_err("r%2d = %.16lx r%d = %.16lx\n", | |
103 | r, kvmppc_get_gpr(vcpu, r), | |
104 | r+16, kvmppc_get_gpr(vcpu, r+16)); | |
105 | pr_err("ctr = %.16lx lr = %.16lx\n", | |
106 | vcpu->arch.ctr, vcpu->arch.lr); | |
107 | pr_err("srr0 = %.16llx srr1 = %.16llx\n", | |
108 | vcpu->arch.shregs.srr0, vcpu->arch.shregs.srr1); | |
109 | pr_err("sprg0 = %.16llx sprg1 = %.16llx\n", | |
110 | vcpu->arch.shregs.sprg0, vcpu->arch.shregs.sprg1); | |
111 | pr_err("sprg2 = %.16llx sprg3 = %.16llx\n", | |
112 | vcpu->arch.shregs.sprg2, vcpu->arch.shregs.sprg3); | |
113 | pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n", | |
114 | vcpu->arch.cr, vcpu->arch.xer, vcpu->arch.shregs.dsisr); | |
115 | pr_err("dar = %.16llx\n", vcpu->arch.shregs.dar); | |
116 | pr_err("fault dar = %.16lx dsisr = %.8x\n", | |
117 | vcpu->arch.fault_dar, vcpu->arch.fault_dsisr); | |
118 | pr_err("SLB (%d entries):\n", vcpu->arch.slb_max); | |
119 | for (r = 0; r < vcpu->arch.slb_max; ++r) | |
120 | pr_err(" ESID = %.16llx VSID = %.16llx\n", | |
121 | vcpu->arch.slb[r].orige, vcpu->arch.slb[r].origv); | |
122 | pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n", | |
123 | vcpu->arch.lpcr, vcpu->kvm->arch.sdr1, | |
124 | vcpu->arch.last_inst); | |
125 | } | |
126 | ||
a8606e20 PM |
127 | struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id) |
128 | { | |
129 | int r; | |
130 | struct kvm_vcpu *v, *ret = NULL; | |
131 | ||
132 | mutex_lock(&kvm->lock); | |
133 | kvm_for_each_vcpu(r, v, kvm) { | |
134 | if (v->vcpu_id == id) { | |
135 | ret = v; | |
136 | break; | |
137 | } | |
138 | } | |
139 | mutex_unlock(&kvm->lock); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa) | |
144 | { | |
145 | vpa->shared_proc = 1; | |
146 | vpa->yield_count = 1; | |
147 | } | |
148 | ||
149 | static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu, | |
150 | unsigned long flags, | |
151 | unsigned long vcpuid, unsigned long vpa) | |
152 | { | |
153 | struct kvm *kvm = vcpu->kvm; | |
154 | unsigned long pg_index, ra, len; | |
155 | unsigned long pg_offset; | |
156 | void *va; | |
157 | struct kvm_vcpu *tvcpu; | |
158 | ||
159 | tvcpu = kvmppc_find_vcpu(kvm, vcpuid); | |
160 | if (!tvcpu) | |
161 | return H_PARAMETER; | |
162 | ||
163 | flags >>= 63 - 18; | |
164 | flags &= 7; | |
165 | if (flags == 0 || flags == 4) | |
166 | return H_PARAMETER; | |
167 | if (flags < 4) { | |
168 | if (vpa & 0x7f) | |
169 | return H_PARAMETER; | |
170 | /* registering new area; convert logical addr to real */ | |
171 | pg_index = vpa >> kvm->arch.ram_porder; | |
172 | pg_offset = vpa & (kvm->arch.ram_psize - 1); | |
173 | if (pg_index >= kvm->arch.ram_npages) | |
174 | return H_PARAMETER; | |
175 | if (kvm->arch.ram_pginfo[pg_index].pfn == 0) | |
176 | return H_PARAMETER; | |
177 | ra = kvm->arch.ram_pginfo[pg_index].pfn << PAGE_SHIFT; | |
178 | ra |= pg_offset; | |
179 | va = __va(ra); | |
180 | if (flags <= 1) | |
181 | len = *(unsigned short *)(va + 4); | |
182 | else | |
183 | len = *(unsigned int *)(va + 4); | |
184 | if (pg_offset + len > kvm->arch.ram_psize) | |
185 | return H_PARAMETER; | |
186 | switch (flags) { | |
187 | case 1: /* register VPA */ | |
188 | if (len < 640) | |
189 | return H_PARAMETER; | |
190 | tvcpu->arch.vpa = va; | |
191 | init_vpa(vcpu, va); | |
192 | break; | |
193 | case 2: /* register DTL */ | |
194 | if (len < 48) | |
195 | return H_PARAMETER; | |
196 | if (!tvcpu->arch.vpa) | |
197 | return H_RESOURCE; | |
198 | len -= len % 48; | |
199 | tvcpu->arch.dtl = va; | |
200 | tvcpu->arch.dtl_end = va + len; | |
201 | break; | |
202 | case 3: /* register SLB shadow buffer */ | |
203 | if (len < 8) | |
204 | return H_PARAMETER; | |
205 | if (!tvcpu->arch.vpa) | |
206 | return H_RESOURCE; | |
207 | tvcpu->arch.slb_shadow = va; | |
208 | len = (len - 16) / 16; | |
209 | tvcpu->arch.slb_shadow = va; | |
210 | break; | |
211 | } | |
212 | } else { | |
213 | switch (flags) { | |
214 | case 5: /* unregister VPA */ | |
215 | if (tvcpu->arch.slb_shadow || tvcpu->arch.dtl) | |
216 | return H_RESOURCE; | |
217 | tvcpu->arch.vpa = NULL; | |
218 | break; | |
219 | case 6: /* unregister DTL */ | |
220 | tvcpu->arch.dtl = NULL; | |
221 | break; | |
222 | case 7: /* unregister SLB shadow buffer */ | |
223 | tvcpu->arch.slb_shadow = NULL; | |
224 | break; | |
225 | } | |
226 | } | |
227 | return H_SUCCESS; | |
228 | } | |
229 | ||
230 | int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu) | |
231 | { | |
232 | unsigned long req = kvmppc_get_gpr(vcpu, 3); | |
233 | unsigned long target, ret = H_SUCCESS; | |
234 | struct kvm_vcpu *tvcpu; | |
235 | ||
236 | switch (req) { | |
237 | case H_CEDE: | |
238 | vcpu->arch.shregs.msr |= MSR_EE; | |
239 | vcpu->arch.ceded = 1; | |
240 | smp_mb(); | |
241 | if (!vcpu->arch.prodded) | |
242 | kvmppc_vcpu_block(vcpu); | |
243 | else | |
244 | vcpu->arch.prodded = 0; | |
245 | smp_mb(); | |
246 | vcpu->arch.ceded = 0; | |
247 | break; | |
248 | case H_PROD: | |
249 | target = kvmppc_get_gpr(vcpu, 4); | |
250 | tvcpu = kvmppc_find_vcpu(vcpu->kvm, target); | |
251 | if (!tvcpu) { | |
252 | ret = H_PARAMETER; | |
253 | break; | |
254 | } | |
255 | tvcpu->arch.prodded = 1; | |
256 | smp_mb(); | |
257 | if (vcpu->arch.ceded) { | |
258 | if (waitqueue_active(&vcpu->wq)) { | |
259 | wake_up_interruptible(&vcpu->wq); | |
260 | vcpu->stat.halt_wakeup++; | |
261 | } | |
262 | } | |
263 | break; | |
264 | case H_CONFER: | |
265 | break; | |
266 | case H_REGISTER_VPA: | |
267 | ret = do_h_register_vpa(vcpu, kvmppc_get_gpr(vcpu, 4), | |
268 | kvmppc_get_gpr(vcpu, 5), | |
269 | kvmppc_get_gpr(vcpu, 6)); | |
270 | break; | |
271 | default: | |
272 | return RESUME_HOST; | |
273 | } | |
274 | kvmppc_set_gpr(vcpu, 3, ret); | |
275 | vcpu->arch.hcall_needed = 0; | |
276 | return RESUME_GUEST; | |
277 | } | |
278 | ||
de56a948 PM |
279 | static int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, |
280 | struct task_struct *tsk) | |
281 | { | |
282 | int r = RESUME_HOST; | |
283 | ||
284 | vcpu->stat.sum_exits++; | |
285 | ||
286 | run->exit_reason = KVM_EXIT_UNKNOWN; | |
287 | run->ready_for_interrupt_injection = 1; | |
288 | switch (vcpu->arch.trap) { | |
289 | /* We're good on these - the host merely wanted to get our attention */ | |
290 | case BOOK3S_INTERRUPT_HV_DECREMENTER: | |
291 | vcpu->stat.dec_exits++; | |
292 | r = RESUME_GUEST; | |
293 | break; | |
294 | case BOOK3S_INTERRUPT_EXTERNAL: | |
295 | vcpu->stat.ext_intr_exits++; | |
296 | r = RESUME_GUEST; | |
297 | break; | |
298 | case BOOK3S_INTERRUPT_PERFMON: | |
299 | r = RESUME_GUEST; | |
300 | break; | |
301 | case BOOK3S_INTERRUPT_PROGRAM: | |
302 | { | |
303 | ulong flags; | |
304 | /* | |
305 | * Normally program interrupts are delivered directly | |
306 | * to the guest by the hardware, but we can get here | |
307 | * as a result of a hypervisor emulation interrupt | |
308 | * (e40) getting turned into a 700 by BML RTAS. | |
309 | */ | |
310 | flags = vcpu->arch.shregs.msr & 0x1f0000ull; | |
311 | kvmppc_core_queue_program(vcpu, flags); | |
312 | r = RESUME_GUEST; | |
313 | break; | |
314 | } | |
315 | case BOOK3S_INTERRUPT_SYSCALL: | |
316 | { | |
317 | /* hcall - punt to userspace */ | |
318 | int i; | |
319 | ||
320 | if (vcpu->arch.shregs.msr & MSR_PR) { | |
321 | /* sc 1 from userspace - reflect to guest syscall */ | |
322 | kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_SYSCALL); | |
323 | r = RESUME_GUEST; | |
324 | break; | |
325 | } | |
326 | run->papr_hcall.nr = kvmppc_get_gpr(vcpu, 3); | |
327 | for (i = 0; i < 9; ++i) | |
328 | run->papr_hcall.args[i] = kvmppc_get_gpr(vcpu, 4 + i); | |
329 | run->exit_reason = KVM_EXIT_PAPR_HCALL; | |
330 | vcpu->arch.hcall_needed = 1; | |
331 | r = RESUME_HOST; | |
332 | break; | |
333 | } | |
334 | /* | |
335 | * We get these next two if the guest does a bad real-mode access, | |
336 | * as we have enabled VRMA (virtualized real mode area) mode in the | |
337 | * LPCR. We just generate an appropriate DSI/ISI to the guest. | |
338 | */ | |
339 | case BOOK3S_INTERRUPT_H_DATA_STORAGE: | |
340 | vcpu->arch.shregs.dsisr = vcpu->arch.fault_dsisr; | |
341 | vcpu->arch.shregs.dar = vcpu->arch.fault_dar; | |
342 | kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0); | |
343 | r = RESUME_GUEST; | |
344 | break; | |
345 | case BOOK3S_INTERRUPT_H_INST_STORAGE: | |
346 | kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, | |
347 | 0x08000000); | |
348 | r = RESUME_GUEST; | |
349 | break; | |
350 | /* | |
351 | * This occurs if the guest executes an illegal instruction. | |
352 | * We just generate a program interrupt to the guest, since | |
353 | * we don't emulate any guest instructions at this stage. | |
354 | */ | |
355 | case BOOK3S_INTERRUPT_H_EMUL_ASSIST: | |
356 | kvmppc_core_queue_program(vcpu, 0x80000); | |
357 | r = RESUME_GUEST; | |
358 | break; | |
359 | default: | |
360 | kvmppc_dump_regs(vcpu); | |
361 | printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n", | |
362 | vcpu->arch.trap, kvmppc_get_pc(vcpu), | |
363 | vcpu->arch.shregs.msr); | |
364 | r = RESUME_HOST; | |
365 | BUG(); | |
366 | break; | |
367 | } | |
368 | ||
369 | ||
370 | if (!(r & RESUME_HOST)) { | |
371 | /* To avoid clobbering exit_reason, only check for signals if | |
372 | * we aren't already exiting to userspace for some other | |
373 | * reason. */ | |
374 | if (signal_pending(tsk)) { | |
375 | vcpu->stat.signal_exits++; | |
376 | run->exit_reason = KVM_EXIT_INTR; | |
377 | r = -EINTR; | |
378 | } else { | |
379 | kvmppc_core_deliver_interrupts(vcpu); | |
380 | } | |
381 | } | |
382 | ||
383 | return r; | |
384 | } | |
385 | ||
386 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
387 | struct kvm_sregs *sregs) | |
388 | { | |
389 | int i; | |
390 | ||
391 | sregs->pvr = vcpu->arch.pvr; | |
392 | ||
393 | memset(sregs, 0, sizeof(struct kvm_sregs)); | |
394 | for (i = 0; i < vcpu->arch.slb_max; i++) { | |
395 | sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige; | |
396 | sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; | |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
403 | struct kvm_sregs *sregs) | |
404 | { | |
405 | int i, j; | |
406 | ||
407 | kvmppc_set_pvr(vcpu, sregs->pvr); | |
408 | ||
409 | j = 0; | |
410 | for (i = 0; i < vcpu->arch.slb_nr; i++) { | |
411 | if (sregs->u.s.ppc64.slb[i].slbe & SLB_ESID_V) { | |
412 | vcpu->arch.slb[j].orige = sregs->u.s.ppc64.slb[i].slbe; | |
413 | vcpu->arch.slb[j].origv = sregs->u.s.ppc64.slb[i].slbv; | |
414 | ++j; | |
415 | } | |
416 | } | |
417 | vcpu->arch.slb_max = j; | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | int kvmppc_core_check_processor_compat(void) | |
423 | { | |
424 | if (cpu_has_feature(CPU_FTR_HVMODE_206)) | |
425 | return 0; | |
426 | return -EIO; | |
427 | } | |
428 | ||
429 | struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) | |
430 | { | |
431 | struct kvm_vcpu *vcpu; | |
432 | int err = -ENOMEM; | |
433 | unsigned long lpcr; | |
434 | ||
435 | vcpu = kzalloc(sizeof(struct kvm_vcpu), GFP_KERNEL); | |
436 | if (!vcpu) | |
437 | goto out; | |
438 | ||
439 | err = kvm_vcpu_init(vcpu, kvm, id); | |
440 | if (err) | |
441 | goto free_vcpu; | |
442 | ||
443 | vcpu->arch.shared = &vcpu->arch.shregs; | |
444 | vcpu->arch.last_cpu = -1; | |
445 | vcpu->arch.mmcr[0] = MMCR0_FC; | |
446 | vcpu->arch.ctrl = CTRL_RUNLATCH; | |
447 | /* default to host PVR, since we can't spoof it */ | |
448 | vcpu->arch.pvr = mfspr(SPRN_PVR); | |
449 | kvmppc_set_pvr(vcpu, vcpu->arch.pvr); | |
450 | ||
451 | lpcr = kvm->arch.host_lpcr & (LPCR_PECE | LPCR_LPES); | |
452 | lpcr |= LPCR_VPM0 | LPCR_VRMA_L | (4UL << LPCR_DPFD_SH) | LPCR_HDICE; | |
453 | vcpu->arch.lpcr = lpcr; | |
454 | ||
455 | kvmppc_mmu_book3s_hv_init(vcpu); | |
456 | ||
457 | return vcpu; | |
458 | ||
459 | free_vcpu: | |
460 | kfree(vcpu); | |
461 | out: | |
462 | return ERR_PTR(err); | |
463 | } | |
464 | ||
465 | void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) | |
466 | { | |
467 | kvm_vcpu_uninit(vcpu); | |
468 | kfree(vcpu); | |
469 | } | |
470 | ||
471 | extern int __kvmppc_vcore_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); | |
472 | ||
a8606e20 | 473 | static int kvmppc_run_vcpu(struct kvm_run *run, struct kvm_vcpu *vcpu) |
de56a948 PM |
474 | { |
475 | u64 now; | |
476 | ||
477 | if (signal_pending(current)) { | |
478 | run->exit_reason = KVM_EXIT_INTR; | |
479 | return -EINTR; | |
480 | } | |
481 | ||
482 | flush_fp_to_thread(current); | |
483 | flush_altivec_to_thread(current); | |
484 | flush_vsx_to_thread(current); | |
485 | preempt_disable(); | |
486 | ||
487 | /* | |
488 | * Make sure we are running on thread 0, and that | |
489 | * secondary threads are offline. | |
490 | * XXX we should also block attempts to bring any | |
491 | * secondary threads online. | |
492 | */ | |
493 | if (threads_per_core > 1) { | |
494 | int cpu = smp_processor_id(); | |
495 | int thr = cpu_thread_in_core(cpu); | |
496 | ||
497 | if (thr) | |
498 | goto out; | |
499 | while (++thr < threads_per_core) | |
500 | if (cpu_online(cpu + thr)) | |
501 | goto out; | |
502 | } | |
503 | ||
504 | kvm_guest_enter(); | |
505 | ||
506 | __kvmppc_vcore_entry(NULL, vcpu); | |
507 | ||
508 | kvm_guest_exit(); | |
509 | ||
510 | preempt_enable(); | |
511 | kvm_resched(vcpu); | |
512 | ||
513 | now = get_tb(); | |
514 | /* cancel pending dec exception if dec is positive */ | |
515 | if (now < vcpu->arch.dec_expires && kvmppc_core_pending_dec(vcpu)) | |
516 | kvmppc_core_dequeue_dec(vcpu); | |
517 | ||
518 | return kvmppc_handle_exit(run, vcpu, current); | |
519 | ||
520 | out: | |
521 | preempt_enable(); | |
522 | return -EBUSY; | |
523 | } | |
524 | ||
a8606e20 PM |
525 | int kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu) |
526 | { | |
527 | int r; | |
528 | ||
529 | do { | |
530 | r = kvmppc_run_vcpu(run, vcpu); | |
531 | ||
532 | if (run->exit_reason == KVM_EXIT_PAPR_HCALL && | |
533 | !(vcpu->arch.shregs.msr & MSR_PR)) { | |
534 | r = kvmppc_pseries_do_hcall(vcpu); | |
535 | kvmppc_core_deliver_interrupts(vcpu); | |
536 | } | |
537 | } while (r == RESUME_GUEST); | |
538 | return r; | |
539 | } | |
540 | ||
de56a948 PM |
541 | int kvmppc_core_prepare_memory_region(struct kvm *kvm, |
542 | struct kvm_userspace_memory_region *mem) | |
543 | { | |
544 | if (mem->guest_phys_addr == 0 && mem->memory_size != 0) | |
545 | return kvmppc_prepare_vrma(kvm, mem); | |
546 | return 0; | |
547 | } | |
548 | ||
549 | void kvmppc_core_commit_memory_region(struct kvm *kvm, | |
550 | struct kvm_userspace_memory_region *mem) | |
551 | { | |
552 | if (mem->guest_phys_addr == 0 && mem->memory_size != 0) | |
553 | kvmppc_map_vrma(kvm, mem); | |
554 | } | |
555 | ||
556 | int kvmppc_core_init_vm(struct kvm *kvm) | |
557 | { | |
558 | long r; | |
559 | ||
560 | /* Allocate hashed page table */ | |
561 | r = kvmppc_alloc_hpt(kvm); | |
562 | ||
563 | return r; | |
564 | } | |
565 | ||
566 | void kvmppc_core_destroy_vm(struct kvm *kvm) | |
567 | { | |
568 | kvmppc_free_hpt(kvm); | |
569 | } | |
570 | ||
571 | /* These are stubs for now */ | |
572 | void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end) | |
573 | { | |
574 | } | |
575 | ||
576 | /* We don't need to emulate any privileged instructions or dcbz */ | |
577 | int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
578 | unsigned int inst, int *advance) | |
579 | { | |
580 | return EMULATE_FAIL; | |
581 | } | |
582 | ||
583 | int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) | |
584 | { | |
585 | return EMULATE_FAIL; | |
586 | } | |
587 | ||
588 | int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) | |
589 | { | |
590 | return EMULATE_FAIL; | |
591 | } | |
592 | ||
593 | static int kvmppc_book3s_hv_init(void) | |
594 | { | |
595 | int r; | |
596 | ||
597 | r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); | |
598 | ||
599 | if (r) | |
600 | return r; | |
601 | ||
602 | r = kvmppc_mmu_hv_init(); | |
603 | ||
604 | return r; | |
605 | } | |
606 | ||
607 | static void kvmppc_book3s_hv_exit(void) | |
608 | { | |
609 | kvm_exit(); | |
610 | } | |
611 | ||
612 | module_init(kvmppc_book3s_hv_init); | |
613 | module_exit(kvmppc_book3s_hv_exit); |