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Merge branches 'acpi-video', 'device-properties', 'pm-sleep' and 'pm-cpuidle'
[linux-2.6-block.git] / arch / powerpc / kvm / book3s_hv.c
CommitLineData
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>
66b15db6 27#include <linux/export.h>
de56a948
PM		 28#include <linux/fs.h>
29#include <linux/anon_inodes.h>
30#include <linux/cpumask.h>
aa04b4cc
PM		 31#include <linux/spinlock.h>
32#include <linux/page-flags.h>
2c9097e4 33#include <linux/srcu.h>
398a76c6 34#include <linux/miscdevice.h>
e23a808b 35#include <linux/debugfs.h>
de56a948
PM		 36
37#include <asm/reg.h>
38#include <asm/cputable.h>
9678cdaa 39#include <asm/cache.h>
de56a948
PM		 40#include <asm/cacheflush.h>
41#include <asm/tlbflush.h>
42#include <asm/uaccess.h>
43#include <asm/io.h>
44#include <asm/kvm_ppc.h>
45#include <asm/kvm_book3s.h>
46#include <asm/mmu_context.h>
47#include <asm/lppaca.h>
48#include <asm/processor.h>
371fefd6 49#include <asm/cputhreads.h>
aa04b4cc 50#include <asm/page.h>
de1d9248 51#include <asm/hvcall.h>
ae3a197e 52#include <asm/switch_to.h>
512691d4 53#include <asm/smp.h>
66feed61 54#include <asm/dbell.h>
de56a948 55#include <linux/gfp.h>
de56a948
PM		 56#include <linux/vmalloc.h>
57#include <linux/highmem.h>
c77162de 58#include <linux/hugetlb.h>
2ba9f0d8 59#include <linux/module.h>
de56a948 60
3a167bea
AK		 61#include "book3s.h"
62
3c78f78a
SW		 63#define CREATE_TRACE_POINTS
64#include "trace_hv.h"
65
de56a948
PM		 66/* #define EXIT_DEBUG */
67/* #define EXIT_DEBUG_SIMPLE */
68/* #define EXIT_DEBUG_INT */
69
913d3ff9
PM		 70/* Used to indicate that a guest page fault needs to be handled */
71#define RESUME_PAGE_FAULT (RESUME_GUEST | RESUME_FLAG_ARCH1)
72
c7b67670
PM		 73/* Used as a "null" value for timebase values */
74#define TB_NIL (~(u64)0)
75
699a0ea0
PM		 76static DECLARE_BITMAP(default_enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
77
9678cdaa
SS		 78#if defined(CONFIG_PPC_64K_PAGES)
79#define MPP_BUFFER_ORDER 0
80#elif defined(CONFIG_PPC_4K_PAGES)
81#define MPP_BUFFER_ORDER 3
82#endif
83
84
19ccb76a 85static void kvmppc_end_cede(struct kvm_vcpu *vcpu);
32fad281 86static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu);
19ccb76a 87
66feed61
PM		 88static bool kvmppc_ipi_thread(int cpu)
89{
90 /* On POWER8 for IPIs to threads in the same core, use msgsnd */
91 if (cpu_has_feature(CPU_FTR_ARCH_207S)) {
92 preempt_disable();
93 if (cpu_first_thread_sibling(cpu) ==
94 cpu_first_thread_sibling(smp_processor_id())) {
95 unsigned long msg = PPC_DBELL_TYPE(PPC_DBELL_SERVER);
96 msg |= cpu_thread_in_core(cpu);
97 smp_mb();
98 __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
99 preempt_enable();
100 return true;
101 }
102 preempt_enable();
103 }
104
105#if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP)
106 if (cpu >= 0 && cpu < nr_cpu_ids && paca[cpu].kvm_hstate.xics_phys) {
107 xics_wake_cpu(cpu);
108 return true;
109 }
110#endif
111
112 return false;
113}
114
3a167bea 115static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu)
54695c30 116{
54695c30
BH		 117 int cpu = vcpu->cpu;
118 wait_queue_head_t *wqp;
119
120 wqp = kvm_arch_vcpu_wq(vcpu);
121 if (waitqueue_active(wqp)) {
122 wake_up_interruptible(wqp);
123 ++vcpu->stat.halt_wakeup;
124 }
125
66feed61
PM		 126 if (kvmppc_ipi_thread(cpu + vcpu->arch.ptid))
127 return;
54695c30
BH		 128
129 /* CPU points to the first thread of the core */
66feed61
PM		 130 if (cpu >= 0 && cpu < nr_cpu_ids && cpu_online(cpu))
131 smp_send_reschedule(cpu);
54695c30
BH		 132}
133
c7b67670
PM		 134/*
135 * We use the vcpu_load/put functions to measure stolen time.
136 * Stolen time is counted as time when either the vcpu is able to
137 * run as part of a virtual core, but the task running the vcore
138 * is preempted or sleeping, or when the vcpu needs something done
139 * in the kernel by the task running the vcpu, but that task is
140 * preempted or sleeping. Those two things have to be counted
141 * separately, since one of the vcpu tasks will take on the job
142 * of running the core, and the other vcpu tasks in the vcore will
143 * sleep waiting for it to do that, but that sleep shouldn't count
144 * as stolen time.
145 *
146 * Hence we accumulate stolen time when the vcpu can run as part of
147 * a vcore using vc->stolen_tb, and the stolen time when the vcpu
148 * needs its task to do other things in the kernel (for example,
149 * service a page fault) in busy_stolen. We don't accumulate
150 * stolen time for a vcore when it is inactive, or for a vcpu
151 * when it is in state RUNNING or NOTREADY. NOTREADY is a bit of
152 * a misnomer; it means that the vcpu task is not executing in
153 * the KVM_VCPU_RUN ioctl, i.e. it is in userspace or elsewhere in
154 * the kernel. We don't have any way of dividing up that time
155 * between time that the vcpu is genuinely stopped, time that
156 * the task is actively working on behalf of the vcpu, and time
157 * that the task is preempted, so we don't count any of it as
158 * stolen.
159 *
160 * Updates to busy_stolen are protected by arch.tbacct_lock;
2711e248
PM		 161 * updates to vc->stolen_tb are protected by the vcore->stoltb_lock
162 * lock. The stolen times are measured in units of timebase ticks.
163 * (Note that the != TB_NIL checks below are purely defensive;
164 * they should never fail.)
c7b67670
PM		 165 */
166
3a167bea 167static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu)
de56a948 168{
0456ec4f 169 struct kvmppc_vcore *vc = vcpu->arch.vcore;
bf3d32e1 170 unsigned long flags;
0456ec4f 171
2711e248
PM		 172 /*
173 * We can test vc->runner without taking the vcore lock,
174 * because only this task ever sets vc->runner to this
175 * vcpu, and once it is set to this vcpu, only this task
176 * ever sets it to NULL.
177 */
178 if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE) {
179 spin_lock_irqsave(&vc->stoltb_lock, flags);
180 if (vc->preempt_tb != TB_NIL) {
181 vc->stolen_tb += mftb() - vc->preempt_tb;
182 vc->preempt_tb = TB_NIL;
183 }
184 spin_unlock_irqrestore(&vc->stoltb_lock, flags);
c7b67670 185 }
2711e248 186 spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
c7b67670
PM		 187 if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST &&
188 vcpu->arch.busy_preempt != TB_NIL) {
189 vcpu->arch.busy_stolen += mftb() - vcpu->arch.busy_preempt;
190 vcpu->arch.busy_preempt = TB_NIL;
191 }
bf3d32e1 192 spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
de56a948
PM		 193}
194
3a167bea 195static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu)
de56a948 196{
0456ec4f 197 struct kvmppc_vcore *vc = vcpu->arch.vcore;
bf3d32e1 198 unsigned long flags;
0456ec4f 199
2711e248
PM		 200 if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE) {
201 spin_lock_irqsave(&vc->stoltb_lock, flags);
0456ec4f 202 vc->preempt_tb = mftb();
2711e248
PM		 203 spin_unlock_irqrestore(&vc->stoltb_lock, flags);
204 }
205 spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags);
c7b67670
PM		 206 if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST)
207 vcpu->arch.busy_preempt = mftb();
bf3d32e1 208 spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags);
de56a948
PM		 209}
210
3a167bea 211static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr)
de56a948
PM		 212{
213 vcpu->arch.shregs.msr = msr;
19ccb76a 214 kvmppc_end_cede(vcpu);
de56a948
PM		 215}
216
3a167bea 217void kvmppc_set_pvr_hv(struct kvm_vcpu *vcpu, u32 pvr)
de56a948
PM		 218{
219 vcpu->arch.pvr = pvr;
220}
221
388cc6e1
PM		 222int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat)
223{
224 unsigned long pcr = 0;
225 struct kvmppc_vcore *vc = vcpu->arch.vcore;
226
227 if (arch_compat) {
388cc6e1
PM		 228 switch (arch_compat) {
229 case PVR_ARCH_205:
5557ae0e
PM		 230 /*
231 * If an arch bit is set in PCR, all the defined
232 * higher-order arch bits also have to be set.
233 */
234 pcr = PCR_ARCH_206 | PCR_ARCH_205;
388cc6e1
PM		 235 break;
236 case PVR_ARCH_206:
237 case PVR_ARCH_206p:
5557ae0e
PM		 238 pcr = PCR_ARCH_206;
239 break;
240 case PVR_ARCH_207:
388cc6e1
PM		 241 break;
242 default:
243 return -EINVAL;
244 }
5557ae0e
PM		 245
246 if (!cpu_has_feature(CPU_FTR_ARCH_207S)) {
247 /* POWER7 can't emulate POWER8 */
248 if (!(pcr & PCR_ARCH_206))
249 return -EINVAL;
250 pcr &= ~PCR_ARCH_206;
251 }
388cc6e1
PM		 252 }
253
254 spin_lock(&vc->lock);
255 vc->arch_compat = arch_compat;
256 vc->pcr = pcr;
257 spin_unlock(&vc->lock);
258
259 return 0;
260}
261
de56a948
PM		 262void kvmppc_dump_regs(struct kvm_vcpu *vcpu)
263{
264 int r;
265
266 pr_err("vcpu %p (%d):\n", vcpu, vcpu->vcpu_id);
267 pr_err("pc = %.16lx msr = %.16llx trap = %x\n",
268 vcpu->arch.pc, vcpu->arch.shregs.msr, vcpu->arch.trap);
269 for (r = 0; r < 16; ++r)
270 pr_err("r%2d = %.16lx r%d = %.16lx\n",
271 r, kvmppc_get_gpr(vcpu, r),
272 r+16, kvmppc_get_gpr(vcpu, r+16));
273 pr_err("ctr = %.16lx lr = %.16lx\n",
274 vcpu->arch.ctr, vcpu->arch.lr);
275 pr_err("srr0 = %.16llx srr1 = %.16llx\n",
276 vcpu->arch.shregs.srr0, vcpu->arch.shregs.srr1);
277 pr_err("sprg0 = %.16llx sprg1 = %.16llx\n",
278 vcpu->arch.shregs.sprg0, vcpu->arch.shregs.sprg1);
279 pr_err("sprg2 = %.16llx sprg3 = %.16llx\n",
280 vcpu->arch.shregs.sprg2, vcpu->arch.shregs.sprg3);
281 pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n",
282 vcpu->arch.cr, vcpu->arch.xer, vcpu->arch.shregs.dsisr);
283 pr_err("dar = %.16llx\n", vcpu->arch.shregs.dar);
284 pr_err("fault dar = %.16lx dsisr = %.8x\n",
285 vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
286 pr_err("SLB (%d entries):\n", vcpu->arch.slb_max);
287 for (r = 0; r < vcpu->arch.slb_max; ++r)
288 pr_err(" ESID = %.16llx VSID = %.16llx\n",
289 vcpu->arch.slb[r].orige, vcpu->arch.slb[r].origv);
290 pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n",
a0144e2a 291 vcpu->arch.vcore->lpcr, vcpu->kvm->arch.sdr1,
de56a948
PM		 292 vcpu->arch.last_inst);
293}
294
a8606e20
PM		 295struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id)
296{
297 int r;
298 struct kvm_vcpu *v, *ret = NULL;
299
300 mutex_lock(&kvm->lock);
301 kvm_for_each_vcpu(r, v, kvm) {
302 if (v->vcpu_id == id) {
303 ret = v;
304 break;
305 }
306 }
307 mutex_unlock(&kvm->lock);
308 return ret;
309}
310
311static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa)
312{
f13c13a0 313 vpa->__old_status |= LPPACA_OLD_SHARED_PROC;
02407552 314 vpa->yield_count = cpu_to_be32(1);
a8606e20
PM		 315}
316
55b665b0
PM		 317static int set_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *v,
318 unsigned long addr, unsigned long len)
319{
320 /* check address is cacheline aligned */
321 if (addr & (L1_CACHE_BYTES - 1))
322 return -EINVAL;
323 spin_lock(&vcpu->arch.vpa_update_lock);
324 if (v->next_gpa != addr || v->len != len) {
325 v->next_gpa = addr;
326 v->len = addr ? len : 0;
327 v->update_pending = 1;
328 }
329 spin_unlock(&vcpu->arch.vpa_update_lock);
330 return 0;
331}
332
2e25aa5f
PM		 333/* Length for a per-processor buffer is passed in at offset 4 in the buffer */
334struct reg_vpa {
335 u32 dummy;
336 union {
02407552
AG		 337 __be16 hword;
338 __be32 word;
2e25aa5f
PM		 339 } length;
340};
341
342static int vpa_is_registered(struct kvmppc_vpa *vpap)
343{
344 if (vpap->update_pending)
345 return vpap->next_gpa != 0;
346 return vpap->pinned_addr != NULL;
347}
348
a8606e20
PM		 349static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu,
350 unsigned long flags,
351 unsigned long vcpuid, unsigned long vpa)
352{
353 struct kvm *kvm = vcpu->kvm;
93e60249 354 unsigned long len, nb;
a8606e20
PM		 355 void *va;
356 struct kvm_vcpu *tvcpu;
2e25aa5f
PM		 357 int err;
358 int subfunc;
359 struct kvmppc_vpa *vpap;
a8606e20
PM		 360
361 tvcpu = kvmppc_find_vcpu(kvm, vcpuid);
362 if (!tvcpu)
363 return H_PARAMETER;
364
2e25aa5f
PM		 365 subfunc = (flags >> H_VPA_FUNC_SHIFT) & H_VPA_FUNC_MASK;
366 if (subfunc == H_VPA_REG_VPA || subfunc == H_VPA_REG_DTL ||
367 subfunc == H_VPA_REG_SLB) {
368 /* Registering new area - address must be cache-line aligned */
369 if ((vpa & (L1_CACHE_BYTES - 1)) || !vpa)
a8606e20 370 return H_PARAMETER;
2e25aa5f
PM		 371
372 /* convert logical addr to kernel addr and read length */
93e60249
PM		 373 va = kvmppc_pin_guest_page(kvm, vpa, &nb);
374 if (va == NULL)
b2b2f165 375 return H_PARAMETER;
2e25aa5f 376 if (subfunc == H_VPA_REG_VPA)
02407552 377 len = be16_to_cpu(((struct reg_vpa *)va)->length.hword);
a8606e20 378 else
02407552 379 len = be32_to_cpu(((struct reg_vpa *)va)->length.word);
c35635ef 380 kvmppc_unpin_guest_page(kvm, va, vpa, false);
2e25aa5f
PM		 381
382 /* Check length */
383 if (len > nb || len < sizeof(struct reg_vpa))
384 return H_PARAMETER;
385 } else {
386 vpa = 0;
387 len = 0;
388 }
389
390 err = H_PARAMETER;
391 vpap = NULL;
392 spin_lock(&tvcpu->arch.vpa_update_lock);
393
394 switch (subfunc) {
395 case H_VPA_REG_VPA: /* register VPA */
396 if (len < sizeof(struct lppaca))
a8606e20 397 break;
2e25aa5f
PM		 398 vpap = &tvcpu->arch.vpa;
399 err = 0;
400 break;
401
402 case H_VPA_REG_DTL: /* register DTL */
403 if (len < sizeof(struct dtl_entry))
a8606e20 404 break;
2e25aa5f
PM		 405 len -= len % sizeof(struct dtl_entry);
406
407 /* Check that they have previously registered a VPA */
408 err = H_RESOURCE;
409 if (!vpa_is_registered(&tvcpu->arch.vpa))
a8606e20 410 break;
2e25aa5f
PM		 411
412 vpap = &tvcpu->arch.dtl;
413 err = 0;
414 break;
415
416 case H_VPA_REG_SLB: /* register SLB shadow buffer */
417 /* Check that they have previously registered a VPA */
418 err = H_RESOURCE;
419 if (!vpa_is_registered(&tvcpu->arch.vpa))
a8606e20 420 break;
2e25aa5f
PM		 421
422 vpap = &tvcpu->arch.slb_shadow;
423 err = 0;
424 break;
425
426 case H_VPA_DEREG_VPA: /* deregister VPA */
427 /* Check they don't still have a DTL or SLB buf registered */
428 err = H_RESOURCE;
429 if (vpa_is_registered(&tvcpu->arch.dtl) ||
430 vpa_is_registered(&tvcpu->arch.slb_shadow))
a8606e20 431 break;
2e25aa5f
PM		 432
433 vpap = &tvcpu->arch.vpa;
434 err = 0;
435 break;
436
437 case H_VPA_DEREG_DTL: /* deregister DTL */
438 vpap = &tvcpu->arch.dtl;
439 err = 0;
440 break;
441
442 case H_VPA_DEREG_SLB: /* deregister SLB shadow buffer */
443 vpap = &tvcpu->arch.slb_shadow;
444 err = 0;
445 break;
446 }
447
448 if (vpap) {
449 vpap->next_gpa = vpa;
450 vpap->len = len;
451 vpap->update_pending = 1;
a8606e20 452 }
93e60249 453
2e25aa5f
PM		 454 spin_unlock(&tvcpu->arch.vpa_update_lock);
455
93e60249 456 return err;
a8606e20
PM		 457}
458
081f323b 459static void kvmppc_update_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *vpap)
2e25aa5f 460{
081f323b 461 struct kvm *kvm = vcpu->kvm;
2e25aa5f
PM		 462 void *va;
463 unsigned long nb;
081f323b 464 unsigned long gpa;
2e25aa5f 465
081f323b
PM		 466 /*
467 * We need to pin the page pointed to by vpap->next_gpa,
468 * but we can't call kvmppc_pin_guest_page under the lock
469 * as it does get_user_pages() and down_read(). So we
470 * have to drop the lock, pin the page, then get the lock
471 * again and check that a new area didn't get registered
472 * in the meantime.
473 */
474 for (;;) {
475 gpa = vpap->next_gpa;
476 spin_unlock(&vcpu->arch.vpa_update_lock);
477 va = NULL;
478 nb = 0;
479 if (gpa)
c35635ef 480 va = kvmppc_pin_guest_page(kvm, gpa, &nb);
081f323b
PM		 481 spin_lock(&vcpu->arch.vpa_update_lock);
482 if (gpa == vpap->next_gpa)
483 break;
484 /* sigh... unpin that one and try again */
485 if (va)
c35635ef 486 kvmppc_unpin_guest_page(kvm, va, gpa, false);
081f323b
PM		 487 }
488
489 vpap->update_pending = 0;
490 if (va && nb < vpap->len) {
491 /*
492 * If it's now too short, it must be that userspace
493 * has changed the mappings underlying guest memory,
494 * so unregister the region.
495 */
c35635ef 496 kvmppc_unpin_guest_page(kvm, va, gpa, false);
081f323b 497 va = NULL;
2e25aa5f
PM		 498 }
499 if (vpap->pinned_addr)
c35635ef
PM		 500 kvmppc_unpin_guest_page(kvm, vpap->pinned_addr, vpap->gpa,
501 vpap->dirty);
502 vpap->gpa = gpa;
2e25aa5f 503 vpap->pinned_addr = va;
c35635ef 504 vpap->dirty = false;
2e25aa5f
PM		 505 if (va)
506 vpap->pinned_end = va + vpap->len;
507}
508
509static void kvmppc_update_vpas(struct kvm_vcpu *vcpu)
510{
2f12f034
PM		 511 if (!(vcpu->arch.vpa.update_pending ||
512 vcpu->arch.slb_shadow.update_pending ||
513 vcpu->arch.dtl.update_pending))
514 return;
515
2e25aa5f
PM		 516 spin_lock(&vcpu->arch.vpa_update_lock);
517 if (vcpu->arch.vpa.update_pending) {
081f323b 518 kvmppc_update_vpa(vcpu, &vcpu->arch.vpa);
55b665b0
PM		 519 if (vcpu->arch.vpa.pinned_addr)
520 init_vpa(vcpu, vcpu->arch.vpa.pinned_addr);
2e25aa5f
PM		 521 }
522 if (vcpu->arch.dtl.update_pending) {
081f323b 523 kvmppc_update_vpa(vcpu, &vcpu->arch.dtl);
2e25aa5f
PM		 524 vcpu->arch.dtl_ptr = vcpu->arch.dtl.pinned_addr;
525 vcpu->arch.dtl_index = 0;
526 }
527 if (vcpu->arch.slb_shadow.update_pending)
081f323b 528 kvmppc_update_vpa(vcpu, &vcpu->arch.slb_shadow);
2e25aa5f
PM		 529 spin_unlock(&vcpu->arch.vpa_update_lock);
530}
531
c7b67670
PM		 532/*
533 * Return the accumulated stolen time for the vcore up until `now'.
534 * The caller should hold the vcore lock.
535 */
536static u64 vcore_stolen_time(struct kvmppc_vcore *vc, u64 now)
537{
538 u64 p;
2711e248 539 unsigned long flags;
c7b67670 540
2711e248
PM		 541 spin_lock_irqsave(&vc->stoltb_lock, flags);
542 p = vc->stolen_tb;
c7b67670 543 if (vc->vcore_state != VCORE_INACTIVE &&
2711e248
PM		 544 vc->preempt_tb != TB_NIL)
545 p += now - vc->preempt_tb;
546 spin_unlock_irqrestore(&vc->stoltb_lock, flags);
c7b67670
PM		 547 return p;
548}
549
0456ec4f
PM		 550static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu,
551 struct kvmppc_vcore *vc)
552{
553 struct dtl_entry *dt;
554 struct lppaca *vpa;
c7b67670
PM		 555 unsigned long stolen;
556 unsigned long core_stolen;
557 u64 now;
0456ec4f
PM		 558
559 dt = vcpu->arch.dtl_ptr;
560 vpa = vcpu->arch.vpa.pinned_addr;
c7b67670
PM		 561 now = mftb();
562 core_stolen = vcore_stolen_time(vc, now);
563 stolen = core_stolen - vcpu->arch.stolen_logged;
564 vcpu->arch.stolen_logged = core_stolen;
bf3d32e1 565 spin_lock_irq(&vcpu->arch.tbacct_lock);
c7b67670
PM		 566 stolen += vcpu->arch.busy_stolen;
567 vcpu->arch.busy_stolen = 0;
bf3d32e1 568 spin_unlock_irq(&vcpu->arch.tbacct_lock);
0456ec4f
PM		 569 if (!dt || !vpa)
570 return;
571 memset(dt, 0, sizeof(struct dtl_entry));
572 dt->dispatch_reason = 7;
02407552
AG		 573 dt->processor_id = cpu_to_be16(vc->pcpu + vcpu->arch.ptid);
574 dt->timebase = cpu_to_be64(now + vc->tb_offset);
575 dt->enqueue_to_dispatch_time = cpu_to_be32(stolen);
576 dt->srr0 = cpu_to_be64(kvmppc_get_pc(vcpu));
577 dt->srr1 = cpu_to_be64(vcpu->arch.shregs.msr);
0456ec4f
PM		 578 ++dt;
579 if (dt == vcpu->arch.dtl.pinned_end)
580 dt = vcpu->arch.dtl.pinned_addr;
581 vcpu->arch.dtl_ptr = dt;
582 /* order writing *dt vs. writing vpa->dtl_idx */
583 smp_wmb();
02407552 584 vpa->dtl_idx = cpu_to_be64(++vcpu->arch.dtl_index);
c35635ef 585 vcpu->arch.dtl.dirty = true;
0456ec4f
PM		 586}
587
9642382e
MN		 588static bool kvmppc_power8_compatible(struct kvm_vcpu *vcpu)
589{
590 if (vcpu->arch.vcore->arch_compat >= PVR_ARCH_207)
591 return true;
592 if ((!vcpu->arch.vcore->arch_compat) &&
593 cpu_has_feature(CPU_FTR_ARCH_207S))
594 return true;
595 return false;
596}
597
598static int kvmppc_h_set_mode(struct kvm_vcpu *vcpu, unsigned long mflags,
599 unsigned long resource, unsigned long value1,
600 unsigned long value2)
601{
602 switch (resource) {
603 case H_SET_MODE_RESOURCE_SET_CIABR:
604 if (!kvmppc_power8_compatible(vcpu))
605 return H_P2;
606 if (value2)
607 return H_P4;
608 if (mflags)
609 return H_UNSUPPORTED_FLAG_START;
610 /* Guests can't breakpoint the hypervisor */
611 if ((value1 & CIABR_PRIV) == CIABR_PRIV_HYPER)
612 return H_P3;
613 vcpu->arch.ciabr = value1;
614 return H_SUCCESS;
615 case H_SET_MODE_RESOURCE_SET_DAWR:
616 if (!kvmppc_power8_compatible(vcpu))
617 return H_P2;
618 if (mflags)
619 return H_UNSUPPORTED_FLAG_START;
620 if (value2 & DABRX_HYP)
621 return H_P4;
622 vcpu->arch.dawr = value1;
623 vcpu->arch.dawrx = value2;
624 return H_SUCCESS;
625 default:
626 return H_TOO_HARD;
627 }
628}
629
90fd09f8
SB		 630static int kvm_arch_vcpu_yield_to(struct kvm_vcpu *target)
631{
632 struct kvmppc_vcore *vcore = target->arch.vcore;
633
634 /*
635 * We expect to have been called by the real mode handler
636 * (kvmppc_rm_h_confer()) which would have directly returned
637 * H_SUCCESS if the source vcore wasn't idle (e.g. if it may
638 * have useful work to do and should not confer) so we don't
639 * recheck that here.
640 */
641
642 spin_lock(&vcore->lock);
643 if (target->arch.state == KVMPPC_VCPU_RUNNABLE &&
644 vcore->vcore_state != VCORE_INACTIVE)
645 target = vcore->runner;
646 spin_unlock(&vcore->lock);
647
648 return kvm_vcpu_yield_to(target);
649}
650
651static int kvmppc_get_yield_count(struct kvm_vcpu *vcpu)
652{
653 int yield_count = 0;
654 struct lppaca *lppaca;
655
656 spin_lock(&vcpu->arch.vpa_update_lock);
657 lppaca = (struct lppaca *)vcpu->arch.vpa.pinned_addr;
658 if (lppaca)
ecb6d618 659 yield_count = be32_to_cpu(lppaca->yield_count);
90fd09f8
SB		 660 spin_unlock(&vcpu->arch.vpa_update_lock);
661 return yield_count;
662}
663
a8606e20
PM		 664int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
665{
666 unsigned long req = kvmppc_get_gpr(vcpu, 3);
667 unsigned long target, ret = H_SUCCESS;
90fd09f8 668 int yield_count;
a8606e20 669 struct kvm_vcpu *tvcpu;
8e591cb7 670 int idx, rc;
a8606e20 671
699a0ea0
PM		 672 if (req <= MAX_HCALL_OPCODE &&
673 !test_bit(req/4, vcpu->kvm->arch.enabled_hcalls))
674 return RESUME_HOST;
675
a8606e20
PM		 676 switch (req) {
677 case H_CEDE:
a8606e20
PM		 678 break;
679 case H_PROD:
680 target = kvmppc_get_gpr(vcpu, 4);
681 tvcpu = kvmppc_find_vcpu(vcpu->kvm, target);
682 if (!tvcpu) {
683 ret = H_PARAMETER;
684 break;
685 }
686 tvcpu->arch.prodded = 1;
687 smp_mb();
688 if (vcpu->arch.ceded) {
689 if (waitqueue_active(&vcpu->wq)) {
690 wake_up_interruptible(&vcpu->wq);
691 vcpu->stat.halt_wakeup++;
692 }
693 }
694 break;
695 case H_CONFER:
42d7604d
PM		 696 target = kvmppc_get_gpr(vcpu, 4);
697 if (target == -1)
698 break;
699 tvcpu = kvmppc_find_vcpu(vcpu->kvm, target);
700 if (!tvcpu) {
701 ret = H_PARAMETER;
702 break;
703 }
90fd09f8
SB		 704 yield_count = kvmppc_get_gpr(vcpu, 5);
705 if (kvmppc_get_yield_count(tvcpu) != yield_count)
706 break;
707 kvm_arch_vcpu_yield_to(tvcpu);
a8606e20
PM		 708 break;
709 case H_REGISTER_VPA:
710 ret = do_h_register_vpa(vcpu, kvmppc_get_gpr(vcpu, 4),
711 kvmppc_get_gpr(vcpu, 5),
712 kvmppc_get_gpr(vcpu, 6));
713 break;
8e591cb7
ME		 714 case H_RTAS:
715 if (list_empty(&vcpu->kvm->arch.rtas_tokens))
716 return RESUME_HOST;
717
c9438092 718 idx = srcu_read_lock(&vcpu->kvm->srcu);
8e591cb7 719 rc = kvmppc_rtas_hcall(vcpu);
c9438092 720 srcu_read_unlock(&vcpu->kvm->srcu, idx);
8e591cb7
ME		 721
722 if (rc == -ENOENT)
723 return RESUME_HOST;
724 else if (rc == 0)
725 break;
726
727 /* Send the error out to userspace via KVM_RUN */
728 return rc;
99342cf8
DG		 729 case H_LOGICAL_CI_LOAD:
730 ret = kvmppc_h_logical_ci_load(vcpu);
731 if (ret == H_TOO_HARD)
732 return RESUME_HOST;
733 break;
734 case H_LOGICAL_CI_STORE:
735 ret = kvmppc_h_logical_ci_store(vcpu);
736 if (ret == H_TOO_HARD)
737 return RESUME_HOST;
738 break;
9642382e
MN		 739 case H_SET_MODE:
740 ret = kvmppc_h_set_mode(vcpu, kvmppc_get_gpr(vcpu, 4),
741 kvmppc_get_gpr(vcpu, 5),
742 kvmppc_get_gpr(vcpu, 6),
743 kvmppc_get_gpr(vcpu, 7));
744 if (ret == H_TOO_HARD)
745 return RESUME_HOST;
746 break;
bc5ad3f3
BH		 747 case H_XIRR:
748 case H_CPPR:
749 case H_EOI:
750 case H_IPI:
8e44ddc3
PM		 751 case H_IPOLL:
752 case H_XIRR_X:
bc5ad3f3
BH		 753 if (kvmppc_xics_enabled(vcpu)) {
754 ret = kvmppc_xics_hcall(vcpu, req);
755 break;
756 } /* fallthrough */
a8606e20
PM		 757 default:
758 return RESUME_HOST;
759 }
760 kvmppc_set_gpr(vcpu, 3, ret);
761 vcpu->arch.hcall_needed = 0;
762 return RESUME_GUEST;
763}
764
ae2113a4
PM		 765static int kvmppc_hcall_impl_hv(unsigned long cmd)
766{
767 switch (cmd) {
768 case H_CEDE:
769 case H_PROD:
770 case H_CONFER:
771 case H_REGISTER_VPA:
9642382e 772 case H_SET_MODE:
99342cf8
DG		 773 case H_LOGICAL_CI_LOAD:
774 case H_LOGICAL_CI_STORE:
ae2113a4
PM		 775#ifdef CONFIG_KVM_XICS
776 case H_XIRR:
777 case H_CPPR:
778 case H_EOI:
779 case H_IPI:
780 case H_IPOLL:
781 case H_XIRR_X:
782#endif
783 return 1;
784 }
785
786 /* See if it's in the real-mode table */
787 return kvmppc_hcall_impl_hv_realmode(cmd);
788}
789
a59c1d9e
MS		 790static int kvmppc_emulate_debug_inst(struct kvm_run *run,
791 struct kvm_vcpu *vcpu)
792{
793 u32 last_inst;
794
795 if (kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst) !=
796 EMULATE_DONE) {
797 /*
798 * Fetch failed, so return to guest and
799 * try executing it again.
800 */
801 return RESUME_GUEST;
802 }
803
804 if (last_inst == KVMPPC_INST_SW_BREAKPOINT) {
805 run->exit_reason = KVM_EXIT_DEBUG;
806 run->debug.arch.address = kvmppc_get_pc(vcpu);
807 return RESUME_HOST;
808 } else {
809 kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
810 return RESUME_GUEST;
811 }
812}
813
3a167bea
AK		 814static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
815 struct task_struct *tsk)
de56a948
PM		 816{
817 int r = RESUME_HOST;
818
819 vcpu->stat.sum_exits++;
820
821 run->exit_reason = KVM_EXIT_UNKNOWN;
822 run->ready_for_interrupt_injection = 1;
823 switch (vcpu->arch.trap) {
824 /* We're good on these - the host merely wanted to get our attention */
825 case BOOK3S_INTERRUPT_HV_DECREMENTER:
826 vcpu->stat.dec_exits++;
827 r = RESUME_GUEST;
828 break;
829 case BOOK3S_INTERRUPT_EXTERNAL:
5d00f66b 830 case BOOK3S_INTERRUPT_H_DOORBELL:
de56a948
PM		 831 vcpu->stat.ext_intr_exits++;
832 r = RESUME_GUEST;
833 break;
dee6f24c
MS		 834 /* HMI is hypervisor interrupt and host has handled it. Resume guest.*/
835 case BOOK3S_INTERRUPT_HMI:
de56a948
PM		 836 case BOOK3S_INTERRUPT_PERFMON:
837 r = RESUME_GUEST;
838 break;
b4072df4
PM		 839 case BOOK3S_INTERRUPT_MACHINE_CHECK:
840 /*
841 * Deliver a machine check interrupt to the guest.
842 * We have to do this, even if the host has handled the
843 * machine check, because machine checks use SRR0/1 and
844 * the interrupt might have trashed guest state in them.
845 */
846 kvmppc_book3s_queue_irqprio(vcpu,
847 BOOK3S_INTERRUPT_MACHINE_CHECK);
848 r = RESUME_GUEST;
849 break;
de56a948
PM		 850 case BOOK3S_INTERRUPT_PROGRAM:
851 {
852 ulong flags;
853 /*
854 * Normally program interrupts are delivered directly
855 * to the guest by the hardware, but we can get here
856 * as a result of a hypervisor emulation interrupt
857 * (e40) getting turned into a 700 by BML RTAS.
858 */
859 flags = vcpu->arch.shregs.msr & 0x1f0000ull;
860 kvmppc_core_queue_program(vcpu, flags);
861 r = RESUME_GUEST;
862 break;
863 }
864 case BOOK3S_INTERRUPT_SYSCALL:
865 {
866 /* hcall - punt to userspace */
867 int i;
868
27025a60
LPF		 869 /* hypercall with MSR_PR has already been handled in rmode,
870 * and never reaches here.
871 */
872
de56a948
PM		 873 run->papr_hcall.nr = kvmppc_get_gpr(vcpu, 3);
874 for (i = 0; i < 9; ++i)
875 run->papr_hcall.args[i] = kvmppc_get_gpr(vcpu, 4 + i);
876 run->exit_reason = KVM_EXIT_PAPR_HCALL;
877 vcpu->arch.hcall_needed = 1;
878 r = RESUME_HOST;
879 break;
880 }
881 /*
342d3db7
PM		 882 * We get these next two if the guest accesses a page which it thinks
883 * it has mapped but which is not actually present, either because
884 * it is for an emulated I/O device or because the corresonding
885 * host page has been paged out. Any other HDSI/HISI interrupts
886 * have been handled already.
de56a948
PM		 887 */
888 case BOOK3S_INTERRUPT_H_DATA_STORAGE:
913d3ff9 889 r = RESUME_PAGE_FAULT;
de56a948
PM		 890 break;
891 case BOOK3S_INTERRUPT_H_INST_STORAGE:
913d3ff9
PM		 892 vcpu->arch.fault_dar = kvmppc_get_pc(vcpu);
893 vcpu->arch.fault_dsisr = 0;
894 r = RESUME_PAGE_FAULT;
de56a948
PM		 895 break;
896 /*
897 * This occurs if the guest executes an illegal instruction.
a59c1d9e
MS		 898 * If the guest debug is disabled, generate a program interrupt
899 * to the guest. If guest debug is enabled, we need to check
900 * whether the instruction is a software breakpoint instruction.
901 * Accordingly return to Guest or Host.
de56a948
PM		 902 */
903 case BOOK3S_INTERRUPT_H_EMUL_ASSIST:
4a157d61
PM		 904 if (vcpu->arch.emul_inst != KVM_INST_FETCH_FAILED)
905 vcpu->arch.last_inst = kvmppc_need_byteswap(vcpu) ?
906 swab32(vcpu->arch.emul_inst) :
907 vcpu->arch.emul_inst;
a59c1d9e
MS		 908 if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) {
909 r = kvmppc_emulate_debug_inst(run, vcpu);
910 } else {
911 kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
912 r = RESUME_GUEST;
913 }
bd3048b8
ME		 914 break;
915 /*
916 * This occurs if the guest (kernel or userspace), does something that
917 * is prohibited by HFSCR. We just generate a program interrupt to
918 * the guest.
919 */
920 case BOOK3S_INTERRUPT_H_FAC_UNAVAIL:
921 kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
de56a948
PM		 922 r = RESUME_GUEST;
923 break;
924 default:
925 kvmppc_dump_regs(vcpu);
926 printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",
927 vcpu->arch.trap, kvmppc_get_pc(vcpu),
928 vcpu->arch.shregs.msr);
f3271d4c 929 run->hw.hardware_exit_reason = vcpu->arch.trap;
de56a948 930 r = RESUME_HOST;
de56a948
PM		 931 break;
932 }
933
de56a948
PM		 934 return r;
935}
936
3a167bea
AK		 937static int kvm_arch_vcpu_ioctl_get_sregs_hv(struct kvm_vcpu *vcpu,
938 struct kvm_sregs *sregs)
de56a948
PM		 939{
940 int i;
941
de56a948 942 memset(sregs, 0, sizeof(struct kvm_sregs));
87916442 943 sregs->pvr = vcpu->arch.pvr;
de56a948
PM		 944 for (i = 0; i < vcpu->arch.slb_max; i++) {
945 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige;
946 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv;
947 }
948
949 return 0;
950}
951
3a167bea
AK		 952static int kvm_arch_vcpu_ioctl_set_sregs_hv(struct kvm_vcpu *vcpu,
953 struct kvm_sregs *sregs)
de56a948
PM		 954{
955 int i, j;
956
9333e6c4
PM		 957 /* Only accept the same PVR as the host's, since we can't spoof it */
958 if (sregs->pvr != vcpu->arch.pvr)
959 return -EINVAL;
de56a948
PM		 960
961 j = 0;
962 for (i = 0; i < vcpu->arch.slb_nr; i++) {
963 if (sregs->u.s.ppc64.slb[i].slbe & SLB_ESID_V) {
964 vcpu->arch.slb[j].orige = sregs->u.s.ppc64.slb[i].slbe;
965 vcpu->arch.slb[j].origv = sregs->u.s.ppc64.slb[i].slbv;
966 ++j;
967 }
968 }
969 vcpu->arch.slb_max = j;
970
971 return 0;
972}
973
a0840240
AK		 974static void kvmppc_set_lpcr(struct kvm_vcpu *vcpu, u64 new_lpcr,
975 bool preserve_top32)
a0144e2a 976{
8f902b00 977 struct kvm *kvm = vcpu->kvm;
a0144e2a
PM		 978 struct kvmppc_vcore *vc = vcpu->arch.vcore;
979 u64 mask;
980
8f902b00 981 mutex_lock(&kvm->lock);
a0144e2a 982 spin_lock(&vc->lock);
d682916a
AB		 983 /*
984 * If ILE (interrupt little-endian) has changed, update the
985 * MSR_LE bit in the intr_msr for each vcpu in this vcore.
986 */
987 if ((new_lpcr & LPCR_ILE) != (vc->lpcr & LPCR_ILE)) {
d682916a
AB		 988 struct kvm_vcpu *vcpu;
989 int i;
990
d682916a
AB		 991 kvm_for_each_vcpu(i, vcpu, kvm) {
992 if (vcpu->arch.vcore != vc)
993 continue;
994 if (new_lpcr & LPCR_ILE)
995 vcpu->arch.intr_msr |= MSR_LE;
996 else
997 vcpu->arch.intr_msr &= ~MSR_LE;
998 }
d682916a
AB		 999 }
1000
a0144e2a
PM		 1001 /*
1002 * Userspace can only modify DPFD (default prefetch depth),
1003 * ILE (interrupt little-endian) and TC (translation control).
e0622bd9 1004 * On POWER8 userspace can also modify AIL (alt. interrupt loc.)
a0144e2a
PM		 1005 */
1006 mask = LPCR_DPFD | LPCR_ILE | LPCR_TC;
e0622bd9
PM		 1007 if (cpu_has_feature(CPU_FTR_ARCH_207S))
1008 mask |= LPCR_AIL;
a0840240
AK		 1009
1010 /* Broken 32-bit version of LPCR must not clear top bits */
1011 if (preserve_top32)
1012 mask &= 0xFFFFFFFF;
a0144e2a
PM		 1013 vc->lpcr = (vc->lpcr & ~mask) | (new_lpcr & mask);
1014 spin_unlock(&vc->lock);
8f902b00 1015 mutex_unlock(&kvm->lock);
a0144e2a
PM		 1016}
1017
3a167bea
AK		 1018static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
1019 union kvmppc_one_reg *val)
31f3438e 1020{
a136a8bd
PM		 1021 int r = 0;
1022 long int i;
31f3438e 1023
a136a8bd 1024 switch (id) {
a59c1d9e
MS		 1025 case KVM_REG_PPC_DEBUG_INST:
1026 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
1027 break;
31f3438e 1028 case KVM_REG_PPC_HIOR:
a136a8bd
PM		 1029 *val = get_reg_val(id, 0);
1030 break;
1031 case KVM_REG_PPC_DABR:
1032 *val = get_reg_val(id, vcpu->arch.dabr);
1033 break;
8563bf52
PM		 1034 case KVM_REG_PPC_DABRX:
1035 *val = get_reg_val(id, vcpu->arch.dabrx);
1036 break;
a136a8bd
PM		 1037 case KVM_REG_PPC_DSCR:
1038 *val = get_reg_val(id, vcpu->arch.dscr);
1039 break;
1040 case KVM_REG_PPC_PURR:
1041 *val = get_reg_val(id, vcpu->arch.purr);
1042 break;
1043 case KVM_REG_PPC_SPURR:
1044 *val = get_reg_val(id, vcpu->arch.spurr);
1045 break;
1046 case KVM_REG_PPC_AMR:
1047 *val = get_reg_val(id, vcpu->arch.amr);
1048 break;
1049 case KVM_REG_PPC_UAMOR:
1050 *val = get_reg_val(id, vcpu->arch.uamor);
1051 break;
b005255e 1052 case KVM_REG_PPC_MMCR0 ... KVM_REG_PPC_MMCRS:
a136a8bd
PM		 1053 i = id - KVM_REG_PPC_MMCR0;
1054 *val = get_reg_val(id, vcpu->arch.mmcr[i]);
1055 break;
1056 case KVM_REG_PPC_PMC1 ... KVM_REG_PPC_PMC8:
1057 i = id - KVM_REG_PPC_PMC1;
1058 *val = get_reg_val(id, vcpu->arch.pmc[i]);
31f3438e 1059 break;
b005255e
MN		 1060 case KVM_REG_PPC_SPMC1 ... KVM_REG_PPC_SPMC2:
1061 i = id - KVM_REG_PPC_SPMC1;
1062 *val = get_reg_val(id, vcpu->arch.spmc[i]);
1063 break;
14941789
PM		 1064 case KVM_REG_PPC_SIAR:
1065 *val = get_reg_val(id, vcpu->arch.siar);
1066 break;
1067 case KVM_REG_PPC_SDAR:
1068 *val = get_reg_val(id, vcpu->arch.sdar);
1069 break;
b005255e
MN		 1070 case KVM_REG_PPC_SIER:
1071 *val = get_reg_val(id, vcpu->arch.sier);
a8bd19ef 1072 break;
b005255e
MN		 1073 case KVM_REG_PPC_IAMR:
1074 *val = get_reg_val(id, vcpu->arch.iamr);
1075 break;
b005255e
MN		 1076 case KVM_REG_PPC_PSPB:
1077 *val = get_reg_val(id, vcpu->arch.pspb);
1078 break;
b005255e
MN		 1079 case KVM_REG_PPC_DPDES:
1080 *val = get_reg_val(id, vcpu->arch.vcore->dpdes);
1081 break;
1082 case KVM_REG_PPC_DAWR:
1083 *val = get_reg_val(id, vcpu->arch.dawr);
1084 break;
1085 case KVM_REG_PPC_DAWRX:
1086 *val = get_reg_val(id, vcpu->arch.dawrx);
1087 break;
1088 case KVM_REG_PPC_CIABR:
1089 *val = get_reg_val(id, vcpu->arch.ciabr);
1090 break;
b005255e
MN		 1091 case KVM_REG_PPC_CSIGR:
1092 *val = get_reg_val(id, vcpu->arch.csigr);
1093 break;
1094 case KVM_REG_PPC_TACR:
1095 *val = get_reg_val(id, vcpu->arch.tacr);
1096 break;
1097 case KVM_REG_PPC_TCSCR:
1098 *val = get_reg_val(id, vcpu->arch.tcscr);
1099 break;
1100 case KVM_REG_PPC_PID:
1101 *val = get_reg_val(id, vcpu->arch.pid);
1102 break;
1103 case KVM_REG_PPC_ACOP:
1104 *val = get_reg_val(id, vcpu->arch.acop);
1105 break;
1106 case KVM_REG_PPC_WORT:
1107 *val = get_reg_val(id, vcpu->arch.wort);
a8bd19ef 1108 break;
55b665b0
PM		 1109 case KVM_REG_PPC_VPA_ADDR:
1110 spin_lock(&vcpu->arch.vpa_update_lock);
1111 *val = get_reg_val(id, vcpu->arch.vpa.next_gpa);
1112 spin_unlock(&vcpu->arch.vpa_update_lock);
1113 break;
1114 case KVM_REG_PPC_VPA_SLB:
1115 spin_lock(&vcpu->arch.vpa_update_lock);
1116 val->vpaval.addr = vcpu->arch.slb_shadow.next_gpa;
1117 val->vpaval.length = vcpu->arch.slb_shadow.len;
1118 spin_unlock(&vcpu->arch.vpa_update_lock);
1119 break;
1120 case KVM_REG_PPC_VPA_DTL:
1121 spin_lock(&vcpu->arch.vpa_update_lock);
1122 val->vpaval.addr = vcpu->arch.dtl.next_gpa;
1123 val->vpaval.length = vcpu->arch.dtl.len;
1124 spin_unlock(&vcpu->arch.vpa_update_lock);
1125 break;
93b0f4dc
PM		 1126 case KVM_REG_PPC_TB_OFFSET:
1127 *val = get_reg_val(id, vcpu->arch.vcore->tb_offset);
1128 break;
a0144e2a 1129 case KVM_REG_PPC_LPCR:
a0840240 1130 case KVM_REG_PPC_LPCR_64:
a0144e2a
PM		 1131 *val = get_reg_val(id, vcpu->arch.vcore->lpcr);
1132 break;
4b8473c9
PM		 1133 case KVM_REG_PPC_PPR:
1134 *val = get_reg_val(id, vcpu->arch.ppr);
1135 break;
a7d80d01
MN		 1136#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
1137 case KVM_REG_PPC_TFHAR:
1138 *val = get_reg_val(id, vcpu->arch.tfhar);
1139 break;
1140 case KVM_REG_PPC_TFIAR:
1141 *val = get_reg_val(id, vcpu->arch.tfiar);
1142 break;
1143 case KVM_REG_PPC_TEXASR:
1144 *val = get_reg_val(id, vcpu->arch.texasr);
1145 break;
1146 case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
1147 i = id - KVM_REG_PPC_TM_GPR0;
1148 *val = get_reg_val(id, vcpu->arch.gpr_tm[i]);
1149 break;
1150 case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
1151 {
1152 int j;
1153 i = id - KVM_REG_PPC_TM_VSR0;
1154 if (i < 32)
1155 for (j = 0; j < TS_FPRWIDTH; j++)
1156 val->vsxval[j] = vcpu->arch.fp_tm.fpr[i][j];
1157 else {
1158 if (cpu_has_feature(CPU_FTR_ALTIVEC))
1159 val->vval = vcpu->arch.vr_tm.vr[i-32];
1160 else
1161 r = -ENXIO;
1162 }
1163 break;
1164 }
1165 case KVM_REG_PPC_TM_CR:
1166 *val = get_reg_val(id, vcpu->arch.cr_tm);
1167 break;
1168 case KVM_REG_PPC_TM_LR:
1169 *val = get_reg_val(id, vcpu->arch.lr_tm);
1170 break;
1171 case KVM_REG_PPC_TM_CTR:
1172 *val = get_reg_val(id, vcpu->arch.ctr_tm);
1173 break;
1174 case KVM_REG_PPC_TM_FPSCR:
1175 *val = get_reg_val(id, vcpu->arch.fp_tm.fpscr);
1176 break;
1177 case KVM_REG_PPC_TM_AMR:
1178 *val = get_reg_val(id, vcpu->arch.amr_tm);
1179 break;
1180 case KVM_REG_PPC_TM_PPR:
1181 *val = get_reg_val(id, vcpu->arch.ppr_tm);
1182 break;
1183 case KVM_REG_PPC_TM_VRSAVE:
1184 *val = get_reg_val(id, vcpu->arch.vrsave_tm);
1185 break;
1186 case KVM_REG_PPC_TM_VSCR:
1187 if (cpu_has_feature(CPU_FTR_ALTIVEC))
1188 *val = get_reg_val(id, vcpu->arch.vr_tm.vscr.u[3]);
1189 else
1190 r = -ENXIO;
1191 break;
1192 case KVM_REG_PPC_TM_DSCR:
1193 *val = get_reg_val(id, vcpu->arch.dscr_tm);
1194 break;
1195 case KVM_REG_PPC_TM_TAR:
1196 *val = get_reg_val(id, vcpu->arch.tar_tm);
1197 break;
1198#endif
388cc6e1
PM		 1199 case KVM_REG_PPC_ARCH_COMPAT:
1200 *val = get_reg_val(id, vcpu->arch.vcore->arch_compat);
1201 break;
31f3438e 1202 default:
a136a8bd 1203 r = -EINVAL;
31f3438e
PM		 1204 break;
1205 }
1206
1207 return r;
1208}
1209
3a167bea
AK		 1210static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
1211 union kvmppc_one_reg *val)
31f3438e 1212{
a136a8bd
PM		 1213 int r = 0;
1214 long int i;
55b665b0 1215 unsigned long addr, len;
31f3438e 1216
a136a8bd 1217 switch (id) {
31f3438e 1218 case KVM_REG_PPC_HIOR:
31f3438e 1219 /* Only allow this to be set to zero */
a136a8bd 1220 if (set_reg_val(id, *val))
31f3438e
PM		 1221 r = -EINVAL;
1222 break;
a136a8bd
PM		 1223 case KVM_REG_PPC_DABR:
1224 vcpu->arch.dabr = set_reg_val(id, *val);
1225 break;
8563bf52
PM		 1226 case KVM_REG_PPC_DABRX:
1227 vcpu->arch.dabrx = set_reg_val(id, *val) & ~DABRX_HYP;
1228 break;
a136a8bd
PM		 1229 case KVM_REG_PPC_DSCR:
1230 vcpu->arch.dscr = set_reg_val(id, *val);
1231 break;
1232 case KVM_REG_PPC_PURR:
1233 vcpu->arch.purr = set_reg_val(id, *val);
1234 break;
1235 case KVM_REG_PPC_SPURR:
1236 vcpu->arch.spurr = set_reg_val(id, *val);
1237 break;
1238 case KVM_REG_PPC_AMR:
1239 vcpu->arch.amr = set_reg_val(id, *val);
1240 break;
1241 case KVM_REG_PPC_UAMOR:
1242 vcpu->arch.uamor = set_reg_val(id, *val);
1243 break;
b005255e 1244 case KVM_REG_PPC_MMCR0 ... KVM_REG_PPC_MMCRS:
a136a8bd
PM		 1245 i = id - KVM_REG_PPC_MMCR0;
1246 vcpu->arch.mmcr[i] = set_reg_val(id, *val);
1247 break;
1248 case KVM_REG_PPC_PMC1 ... KVM_REG_PPC_PMC8:
1249 i = id - KVM_REG_PPC_PMC1;
1250 vcpu->arch.pmc[i] = set_reg_val(id, *val);
1251 break;
b005255e
MN		 1252 case KVM_REG_PPC_SPMC1 ... KVM_REG_PPC_SPMC2:
1253 i = id - KVM_REG_PPC_SPMC1;
1254 vcpu->arch.spmc[i] = set_reg_val(id, *val);
1255 break;
14941789
PM		 1256 case KVM_REG_PPC_SIAR:
1257 vcpu->arch.siar = set_reg_val(id, *val);
1258 break;
1259 case KVM_REG_PPC_SDAR:
1260 vcpu->arch.sdar = set_reg_val(id, *val);
1261 break;
b005255e
MN		 1262 case KVM_REG_PPC_SIER:
1263 vcpu->arch.sier = set_reg_val(id, *val);
a8bd19ef 1264 break;
b005255e
MN		 1265 case KVM_REG_PPC_IAMR:
1266 vcpu->arch.iamr = set_reg_val(id, *val);
1267 break;
b005255e
MN		 1268 case KVM_REG_PPC_PSPB:
1269 vcpu->arch.pspb = set_reg_val(id, *val);
1270 break;
b005255e
MN		 1271 case KVM_REG_PPC_DPDES:
1272 vcpu->arch.vcore->dpdes = set_reg_val(id, *val);
1273 break;
1274 case KVM_REG_PPC_DAWR:
1275 vcpu->arch.dawr = set_reg_val(id, *val);
1276 break;
1277 case KVM_REG_PPC_DAWRX:
1278 vcpu->arch.dawrx = set_reg_val(id, *val) & ~DAWRX_HYP;
1279 break;
1280 case KVM_REG_PPC_CIABR:
1281 vcpu->arch.ciabr = set_reg_val(id, *val);
1282 /* Don't allow setting breakpoints in hypervisor code */
1283 if ((vcpu->arch.ciabr & CIABR_PRIV) == CIABR_PRIV_HYPER)
1284 vcpu->arch.ciabr &= ~CIABR_PRIV; /* disable */
1285 break;
b005255e
MN		 1286 case KVM_REG_PPC_CSIGR:
1287 vcpu->arch.csigr = set_reg_val(id, *val);
1288 break;
1289 case KVM_REG_PPC_TACR:
1290 vcpu->arch.tacr = set_reg_val(id, *val);
1291 break;
1292 case KVM_REG_PPC_TCSCR:
1293 vcpu->arch.tcscr = set_reg_val(id, *val);
1294 break;
1295 case KVM_REG_PPC_PID:
1296 vcpu->arch.pid = set_reg_val(id, *val);
1297 break;
1298 case KVM_REG_PPC_ACOP:
1299 vcpu->arch.acop = set_reg_val(id, *val);
1300 break;
1301 case KVM_REG_PPC_WORT:
1302 vcpu->arch.wort = set_reg_val(id, *val);
a8bd19ef 1303 break;
55b665b0
PM		 1304 case KVM_REG_PPC_VPA_ADDR:
1305 addr = set_reg_val(id, *val);
1306 r = -EINVAL;
1307 if (!addr && (vcpu->arch.slb_shadow.next_gpa ||
1308 vcpu->arch.dtl.next_gpa))
1309 break;
1310 r = set_vpa(vcpu, &vcpu->arch.vpa, addr, sizeof(struct lppaca));
1311 break;
1312 case KVM_REG_PPC_VPA_SLB:
1313 addr = val->vpaval.addr;
1314 len = val->vpaval.length;
1315 r = -EINVAL;
1316 if (addr && !vcpu->arch.vpa.next_gpa)
1317 break;
1318 r = set_vpa(vcpu, &vcpu->arch.slb_shadow, addr, len);
1319 break;
1320 case KVM_REG_PPC_VPA_DTL:
1321 addr = val->vpaval.addr;
1322 len = val->vpaval.length;
1323 r = -EINVAL;
9f8c8c78
PM		 1324 if (addr && (len < sizeof(struct dtl_entry) ||
1325 !vcpu->arch.vpa.next_gpa))
55b665b0
PM		 1326 break;
1327 len -= len % sizeof(struct dtl_entry);
1328 r = set_vpa(vcpu, &vcpu->arch.dtl, addr, len);
1329 break;
93b0f4dc
PM		 1330 case KVM_REG_PPC_TB_OFFSET:
1331 /* round up to multiple of 2^24 */
1332 vcpu->arch.vcore->tb_offset =
1333 ALIGN(set_reg_val(id, *val), 1UL << 24);
1334 break;
a0144e2a 1335 case KVM_REG_PPC_LPCR:
a0840240
AK		 1336 kvmppc_set_lpcr(vcpu, set_reg_val(id, *val), true);
1337 break;
1338 case KVM_REG_PPC_LPCR_64:
1339 kvmppc_set_lpcr(vcpu, set_reg_val(id, *val), false);
a0144e2a 1340 break;
4b8473c9
PM		 1341 case KVM_REG_PPC_PPR:
1342 vcpu->arch.ppr = set_reg_val(id, *val);
1343 break;
a7d80d01
MN		 1344#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
1345 case KVM_REG_PPC_TFHAR:
1346 vcpu->arch.tfhar = set_reg_val(id, *val);
1347 break;
1348 case KVM_REG_PPC_TFIAR:
1349 vcpu->arch.tfiar = set_reg_val(id, *val);
1350 break;
1351 case KVM_REG_PPC_TEXASR:
1352 vcpu->arch.texasr = set_reg_val(id, *val);
1353 break;
1354 case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
1355 i = id - KVM_REG_PPC_TM_GPR0;
1356 vcpu->arch.gpr_tm[i] = set_reg_val(id, *val);
1357 break;
1358 case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
1359 {
1360 int j;
1361 i = id - KVM_REG_PPC_TM_VSR0;
1362 if (i < 32)
1363 for (j = 0; j < TS_FPRWIDTH; j++)
1364 vcpu->arch.fp_tm.fpr[i][j] = val->vsxval[j];
1365 else
1366 if (cpu_has_feature(CPU_FTR_ALTIVEC))
1367 vcpu->arch.vr_tm.vr[i-32] = val->vval;
1368 else
1369 r = -ENXIO;
1370 break;
1371 }
1372 case KVM_REG_PPC_TM_CR:
1373 vcpu->arch.cr_tm = set_reg_val(id, *val);
1374 break;
1375 case KVM_REG_PPC_TM_LR:
1376 vcpu->arch.lr_tm = set_reg_val(id, *val);
1377 break;
1378 case KVM_REG_PPC_TM_CTR:
1379 vcpu->arch.ctr_tm = set_reg_val(id, *val);
1380 break;
1381 case KVM_REG_PPC_TM_FPSCR:
1382 vcpu->arch.fp_tm.fpscr = set_reg_val(id, *val);
1383 break;
1384 case KVM_REG_PPC_TM_AMR:
1385 vcpu->arch.amr_tm = set_reg_val(id, *val);
1386 break;
1387 case KVM_REG_PPC_TM_PPR:
1388 vcpu->arch.ppr_tm = set_reg_val(id, *val);
1389 break;
1390 case KVM_REG_PPC_TM_VRSAVE:
1391 vcpu->arch.vrsave_tm = set_reg_val(id, *val);
1392 break;
1393 case KVM_REG_PPC_TM_VSCR:
1394 if (cpu_has_feature(CPU_FTR_ALTIVEC))
1395 vcpu->arch.vr.vscr.u[3] = set_reg_val(id, *val);
1396 else
1397 r = - ENXIO;
1398 break;
1399 case KVM_REG_PPC_TM_DSCR:
1400 vcpu->arch.dscr_tm = set_reg_val(id, *val);
1401 break;
1402 case KVM_REG_PPC_TM_TAR:
1403 vcpu->arch.tar_tm = set_reg_val(id, *val);
1404 break;
1405#endif
388cc6e1
PM		 1406 case KVM_REG_PPC_ARCH_COMPAT:
1407 r = kvmppc_set_arch_compat(vcpu, set_reg_val(id, *val));
1408 break;
31f3438e 1409 default:
a136a8bd 1410 r = -EINVAL;
31f3438e
PM		 1411 break;
1412 }
1413
1414 return r;
1415}
1416
de9bdd1a
SS		 1417static struct kvmppc_vcore *kvmppc_vcore_create(struct kvm *kvm, int core)
1418{
1419 struct kvmppc_vcore *vcore;
1420
1421 vcore = kzalloc(sizeof(struct kvmppc_vcore), GFP_KERNEL);
1422
1423 if (vcore == NULL)
1424 return NULL;
1425
1426 INIT_LIST_HEAD(&vcore->runnable_threads);
1427 spin_lock_init(&vcore->lock);
2711e248 1428 spin_lock_init(&vcore->stoltb_lock);
de9bdd1a
SS		 1429 init_waitqueue_head(&vcore->wq);
1430 vcore->preempt_tb = TB_NIL;
1431 vcore->lpcr = kvm->arch.lpcr;
1432 vcore->first_vcpuid = core * threads_per_subcore;
1433 vcore->kvm = kvm;
1434
9678cdaa
SS		 1435 vcore->mpp_buffer_is_valid = false;
1436
1437 if (cpu_has_feature(CPU_FTR_ARCH_207S))
1438 vcore->mpp_buffer = (void *)__get_free_pages(
1439 GFP_KERNEL|__GFP_ZERO,
1440 MPP_BUFFER_ORDER);
1441
de9bdd1a
SS		 1442 return vcore;
1443}
1444
b6c295df
PM		 1445#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
1446static struct debugfs_timings_element {
1447 const char *name;
1448 size_t offset;
1449} timings[] = {
1450 {"rm_entry", offsetof(struct kvm_vcpu, arch.rm_entry)},
1451 {"rm_intr", offsetof(struct kvm_vcpu, arch.rm_intr)},
1452 {"rm_exit", offsetof(struct kvm_vcpu, arch.rm_exit)},
1453 {"guest", offsetof(struct kvm_vcpu, arch.guest_time)},
1454 {"cede", offsetof(struct kvm_vcpu, arch.cede_time)},
1455};
1456
1457#define N_TIMINGS (sizeof(timings) / sizeof(timings[0]))
1458
1459struct debugfs_timings_state {
1460 struct kvm_vcpu *vcpu;
1461 unsigned int buflen;
1462 char buf[N_TIMINGS * 100];
1463};
1464
1465static int debugfs_timings_open(struct inode *inode, struct file *file)
1466{
1467 struct kvm_vcpu *vcpu = inode->i_private;
1468 struct debugfs_timings_state *p;
1469
1470 p = kzalloc(sizeof(*p), GFP_KERNEL);
1471 if (!p)
1472 return -ENOMEM;
1473
1474 kvm_get_kvm(vcpu->kvm);
1475 p->vcpu = vcpu;
1476 file->private_data = p;
1477
1478 return nonseekable_open(inode, file);
1479}
1480
1481static int debugfs_timings_release(struct inode *inode, struct file *file)
1482{
1483 struct debugfs_timings_state *p = file->private_data;
1484
1485 kvm_put_kvm(p->vcpu->kvm);
1486 kfree(p);
1487 return 0;
1488}
1489
1490static ssize_t debugfs_timings_read(struct file *file, char __user *buf,
1491 size_t len, loff_t *ppos)
1492{
1493 struct debugfs_timings_state *p = file->private_data;
1494 struct kvm_vcpu *vcpu = p->vcpu;
1495 char *s, *buf_end;
1496 struct kvmhv_tb_accumulator tb;
1497 u64 count;
1498 loff_t pos;
1499 ssize_t n;
1500 int i, loops;
1501 bool ok;
1502
1503 if (!p->buflen) {
1504 s = p->buf;
1505 buf_end = s + sizeof(p->buf);
1506 for (i = 0; i < N_TIMINGS; ++i) {
1507 struct kvmhv_tb_accumulator *acc;
1508
1509 acc = (struct kvmhv_tb_accumulator *)
1510 ((unsigned long)vcpu + timings[i].offset);
1511 ok = false;
1512 for (loops = 0; loops < 1000; ++loops) {
1513 count = acc->seqcount;
1514 if (!(count & 1)) {
1515 smp_rmb();
1516 tb = *acc;
1517 smp_rmb();
1518 if (count == acc->seqcount) {
1519 ok = true;
1520 break;
1521 }
1522 }
1523 udelay(1);
1524 }
1525 if (!ok)
1526 snprintf(s, buf_end - s, "%s: stuck\n",
1527 timings[i].name);
1528 else
1529 snprintf(s, buf_end - s,
1530 "%s: %llu %llu %llu %llu\n",
1531 timings[i].name, count / 2,
1532 tb_to_ns(tb.tb_total),
1533 tb_to_ns(tb.tb_min),
1534 tb_to_ns(tb.tb_max));
1535 s += strlen(s);
1536 }
1537 p->buflen = s - p->buf;
1538 }
1539
1540 pos = *ppos;
1541 if (pos >= p->buflen)
1542 return 0;
1543 if (len > p->buflen - pos)
1544 len = p->buflen - pos;
1545 n = copy_to_user(buf, p->buf + pos, len);
1546 if (n) {
1547 if (n == len)
1548 return -EFAULT;
1549 len -= n;
1550 }
1551 *ppos = pos + len;
1552 return len;
1553}
1554
1555static ssize_t debugfs_timings_write(struct file *file, const char __user *buf,
1556 size_t len, loff_t *ppos)
1557{
1558 return -EACCES;
1559}
1560
1561static const struct file_operations debugfs_timings_ops = {
1562 .owner = THIS_MODULE,
1563 .open = debugfs_timings_open,
1564 .release = debugfs_timings_release,
1565 .read = debugfs_timings_read,
1566 .write = debugfs_timings_write,
1567 .llseek = generic_file_llseek,
1568};
1569
1570/* Create a debugfs directory for the vcpu */
1571static void debugfs_vcpu_init(struct kvm_vcpu *vcpu, unsigned int id)
1572{
1573 char buf[16];
1574 struct kvm *kvm = vcpu->kvm;
1575
1576 snprintf(buf, sizeof(buf), "vcpu%u", id);
1577 if (IS_ERR_OR_NULL(kvm->arch.debugfs_dir))
1578 return;
1579 vcpu->arch.debugfs_dir = debugfs_create_dir(buf, kvm->arch.debugfs_dir);
1580 if (IS_ERR_OR_NULL(vcpu->arch.debugfs_dir))
1581 return;
1582 vcpu->arch.debugfs_timings =
1583 debugfs_create_file("timings", 0444, vcpu->arch.debugfs_dir,
1584 vcpu, &debugfs_timings_ops);
1585}
1586
1587#else /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
1588static void debugfs_vcpu_init(struct kvm_vcpu *vcpu, unsigned int id)
1589{
1590}
1591#endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
1592
3a167bea
AK		 1593static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
1594 unsigned int id)
de56a948
PM		 1595{
1596 struct kvm_vcpu *vcpu;
371fefd6
PM		 1597 int err = -EINVAL;
1598 int core;
1599 struct kvmppc_vcore *vcore;
de56a948 1600
3102f784 1601 core = id / threads_per_subcore;
371fefd6
PM		 1602 if (core >= KVM_MAX_VCORES)
1603 goto out;
1604
1605 err = -ENOMEM;
6b75e6bf 1606 vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
de56a948
PM		 1607 if (!vcpu)
1608 goto out;
1609
1610 err = kvm_vcpu_init(vcpu, kvm, id);
1611 if (err)
1612 goto free_vcpu;
1613
1614 vcpu->arch.shared = &vcpu->arch.shregs;
5deb8e7a
AG		 1615#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
1616 /*
1617 * The shared struct is never shared on HV,
1618 * so we can always use host endianness
1619 */
1620#ifdef __BIG_ENDIAN__
1621 vcpu->arch.shared_big_endian = true;
1622#else
1623 vcpu->arch.shared_big_endian = false;
1624#endif
1625#endif
de56a948
PM		 1626 vcpu->arch.mmcr[0] = MMCR0_FC;
1627 vcpu->arch.ctrl = CTRL_RUNLATCH;
1628 /* default to host PVR, since we can't spoof it */
3a167bea 1629 kvmppc_set_pvr_hv(vcpu, mfspr(SPRN_PVR));
2e25aa5f 1630 spin_lock_init(&vcpu->arch.vpa_update_lock);
c7b67670
PM		 1631 spin_lock_init(&vcpu->arch.tbacct_lock);
1632 vcpu->arch.busy_preempt = TB_NIL;
d682916a 1633 vcpu->arch.intr_msr = MSR_SF | MSR_ME;
de56a948 1634
de56a948
PM		 1635 kvmppc_mmu_book3s_hv_init(vcpu);
1636
8455d79e 1637 vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
371fefd6
PM		 1638
1639 init_waitqueue_head(&vcpu->arch.cpu_run);
1640
1641 mutex_lock(&kvm->lock);
1642 vcore = kvm->arch.vcores[core];
1643 if (!vcore) {
de9bdd1a 1644 vcore = kvmppc_vcore_create(kvm, core);
371fefd6 1645 kvm->arch.vcores[core] = vcore;
1b400ba0 1646 kvm->arch.online_vcores++;
371fefd6
PM		 1647 }
1648 mutex_unlock(&kvm->lock);
1649
1650 if (!vcore)
1651 goto free_vcpu;
1652
1653 spin_lock(&vcore->lock);
1654 ++vcore->num_threads;
371fefd6
PM		 1655 spin_unlock(&vcore->lock);
1656 vcpu->arch.vcore = vcore;
e0b7ec05 1657 vcpu->arch.ptid = vcpu->vcpu_id - vcore->first_vcpuid;
371fefd6 1658
af8f38b3
AG		 1659 vcpu->arch.cpu_type = KVM_CPU_3S_64;
1660 kvmppc_sanity_check(vcpu);
1661
b6c295df
PM		 1662 debugfs_vcpu_init(vcpu, id);
1663
de56a948
PM		 1664 return vcpu;
1665
1666free_vcpu:
6b75e6bf 1667 kmem_cache_free(kvm_vcpu_cache, vcpu);
de56a948
PM		 1668out:
1669 return ERR_PTR(err);
1670}
1671
c35635ef
PM		 1672static void unpin_vpa(struct kvm *kvm, struct kvmppc_vpa *vpa)
1673{
1674 if (vpa->pinned_addr)
1675 kvmppc_unpin_guest_page(kvm, vpa->pinned_addr, vpa->gpa,
1676 vpa->dirty);
1677}
1678
3a167bea 1679static void kvmppc_core_vcpu_free_hv(struct kvm_vcpu *vcpu)
de56a948 1680{
2e25aa5f 1681 spin_lock(&vcpu->arch.vpa_update_lock);
c35635ef
PM		 1682 unpin_vpa(vcpu->kvm, &vcpu->arch.dtl);
1683 unpin_vpa(vcpu->kvm, &vcpu->arch.slb_shadow);
1684 unpin_vpa(vcpu->kvm, &vcpu->arch.vpa);
2e25aa5f 1685 spin_unlock(&vcpu->arch.vpa_update_lock);
de56a948 1686 kvm_vcpu_uninit(vcpu);
6b75e6bf 1687 kmem_cache_free(kvm_vcpu_cache, vcpu);
de56a948
PM		 1688}
1689
3a167bea
AK		 1690static int kvmppc_core_check_requests_hv(struct kvm_vcpu *vcpu)
1691{
1692 /* Indicate we want to get back into the guest */
1693 return 1;
1694}
1695
19ccb76a 1696static void kvmppc_set_timer(struct kvm_vcpu *vcpu)
371fefd6 1697{
19ccb76a 1698 unsigned long dec_nsec, now;
371fefd6 1699
19ccb76a
PM		 1700 now = get_tb();
1701 if (now > vcpu->arch.dec_expires) {
1702 /* decrementer has already gone negative */
1703 kvmppc_core_queue_dec(vcpu);
7e28e60e 1704 kvmppc_core_prepare_to_enter(vcpu);
19ccb76a 1705 return;
371fefd6 1706 }
19ccb76a
PM		 1707 dec_nsec = (vcpu->arch.dec_expires - now) * NSEC_PER_SEC
1708 / tb_ticks_per_sec;
1709 hrtimer_start(&vcpu->arch.dec_timer, ktime_set(0, dec_nsec),
1710 HRTIMER_MODE_REL);
1711 vcpu->arch.timer_running = 1;
371fefd6
PM		 1712}
1713
19ccb76a 1714static void kvmppc_end_cede(struct kvm_vcpu *vcpu)
371fefd6 1715{
19ccb76a
PM		 1716 vcpu->arch.ceded = 0;
1717 if (vcpu->arch.timer_running) {
1718 hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
1719 vcpu->arch.timer_running = 0;
1720 }
371fefd6
PM		 1721}
1722
e0b7ec05 1723extern void __kvmppc_vcore_entry(void);
de56a948 1724
371fefd6
PM		 1725static void kvmppc_remove_runnable(struct kvmppc_vcore *vc,
1726 struct kvm_vcpu *vcpu)
de56a948 1727{
c7b67670
PM		 1728 u64 now;
1729
371fefd6
PM		 1730 if (vcpu->arch.state != KVMPPC_VCPU_RUNNABLE)
1731 return;
bf3d32e1 1732 spin_lock_irq(&vcpu->arch.tbacct_lock);
c7b67670
PM		 1733 now = mftb();
1734 vcpu->arch.busy_stolen += vcore_stolen_time(vc, now) -
1735 vcpu->arch.stolen_logged;
1736 vcpu->arch.busy_preempt = now;
1737 vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
bf3d32e1 1738 spin_unlock_irq(&vcpu->arch.tbacct_lock);
371fefd6 1739 --vc->n_runnable;
371fefd6
PM		 1740 list_del(&vcpu->arch.run_list);
1741}
1742
f0888f70
PM		 1743static int kvmppc_grab_hwthread(int cpu)
1744{
1745 struct paca_struct *tpaca;
b754c739 1746 long timeout = 10000;
f0888f70
PM		 1747
1748 tpaca = &paca[cpu];
1749
1750 /* Ensure the thread won't go into the kernel if it wakes */
7b444c67 1751 tpaca->kvm_hstate.kvm_vcpu = NULL;
5d5b99cd
PM		 1752 tpaca->kvm_hstate.napping = 0;
1753 smp_wmb();
1754 tpaca->kvm_hstate.hwthread_req = 1;
f0888f70
PM		 1755
1756 /*
1757 * If the thread is already executing in the kernel (e.g. handling
1758 * a stray interrupt), wait for it to get back to nap mode.
1759 * The smp_mb() is to ensure that our setting of hwthread_req
1760 * is visible before we look at hwthread_state, so if this
1761 * races with the code at system_reset_pSeries and the thread
1762 * misses our setting of hwthread_req, we are sure to see its
1763 * setting of hwthread_state, and vice versa.
1764 */
1765 smp_mb();
1766 while (tpaca->kvm_hstate.hwthread_state == KVM_HWTHREAD_IN_KERNEL) {
1767 if (--timeout <= 0) {
1768 pr_err("KVM: couldn't grab cpu %d\n", cpu);
1769 return -EBUSY;
1770 }
1771 udelay(1);
1772 }
1773 return 0;
1774}
1775
1776static void kvmppc_release_hwthread(int cpu)
1777{
1778 struct paca_struct *tpaca;
1779
1780 tpaca = &paca[cpu];
1781 tpaca->kvm_hstate.hwthread_req = 0;
1782 tpaca->kvm_hstate.kvm_vcpu = NULL;
1783}
1784
371fefd6
PM		 1785static void kvmppc_start_thread(struct kvm_vcpu *vcpu)
1786{
1787 int cpu;
1788 struct paca_struct *tpaca;
1789 struct kvmppc_vcore *vc = vcpu->arch.vcore;
1790
19ccb76a
PM		 1791 if (vcpu->arch.timer_running) {
1792 hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
1793 vcpu->arch.timer_running = 0;
1794 }
371fefd6
PM		 1795 cpu = vc->pcpu + vcpu->arch.ptid;
1796 tpaca = &paca[cpu];
371fefd6 1797 tpaca->kvm_hstate.kvm_vcore = vc;
e0b7ec05 1798 tpaca->kvm_hstate.ptid = vcpu->arch.ptid;
19ccb76a 1799 vcpu->cpu = vc->pcpu;
5d5b99cd 1800 /* Order stores to hstate.kvm_vcore etc. before store to kvm_vcpu */
371fefd6 1801 smp_wmb();
5d5b99cd 1802 tpaca->kvm_hstate.kvm_vcpu = vcpu;
5d5b99cd 1803 if (cpu != smp_processor_id())
66feed61 1804 kvmppc_ipi_thread(cpu);
371fefd6 1805}
de56a948 1806
5d5b99cd 1807static void kvmppc_wait_for_nap(void)
371fefd6 1808{
5d5b99cd
PM		 1809 int cpu = smp_processor_id();
1810 int i, loops;
371fefd6 1811
5d5b99cd
PM		 1812 for (loops = 0; loops < 1000000; ++loops) {
1813 /*
1814 * Check if all threads are finished.
1815 * We set the vcpu pointer when starting a thread
1816 * and the thread clears it when finished, so we look
1817 * for any threads that still have a non-NULL vcpu ptr.
1818 */
1819 for (i = 1; i < threads_per_subcore; ++i)
1820 if (paca[cpu + i].kvm_hstate.kvm_vcpu)
1821 break;
1822 if (i == threads_per_subcore) {
1823 HMT_medium();
1824 return;
371fefd6 1825 }
5d5b99cd 1826 HMT_low();
371fefd6
PM		 1827 }
1828 HMT_medium();
5d5b99cd
PM		 1829 for (i = 1; i < threads_per_subcore; ++i)
1830 if (paca[cpu + i].kvm_hstate.kvm_vcpu)
1831 pr_err("KVM: CPU %d seems to be stuck\n", cpu + i);
371fefd6
PM		 1832}
1833
1834/*
1835 * Check that we are on thread 0 and that any other threads in
7b444c67
PM		 1836 * this core are off-line. Then grab the threads so they can't
1837 * enter the kernel.
371fefd6
PM		 1838 */
1839static int on_primary_thread(void)
1840{
1841 int cpu = smp_processor_id();
3102f784 1842 int thr;
371fefd6 1843
3102f784
ME		 1844 /* Are we on a primary subcore? */
1845 if (cpu_thread_in_subcore(cpu))
371fefd6 1846 return 0;
3102f784
ME		 1847
1848 thr = 0;
1849 while (++thr < threads_per_subcore)
371fefd6
PM		 1850 if (cpu_online(cpu + thr))
1851 return 0;
7b444c67
PM		 1852
1853 /* Grab all hw threads so they can't go into the kernel */
3102f784 1854 for (thr = 1; thr < threads_per_subcore; ++thr) {
7b444c67
PM		 1855 if (kvmppc_grab_hwthread(cpu + thr)) {
1856 /* Couldn't grab one; let the others go */
1857 do {
1858 kvmppc_release_hwthread(cpu + thr);
1859 } while (--thr > 0);
1860 return 0;
1861 }
1862 }
371fefd6
PM		 1863 return 1;
1864}
1865
9678cdaa
SS		 1866static void kvmppc_start_saving_l2_cache(struct kvmppc_vcore *vc)
1867{
1868 phys_addr_t phy_addr, mpp_addr;
1869
1870 phy_addr = (phys_addr_t)virt_to_phys(vc->mpp_buffer);
1871 mpp_addr = phy_addr & PPC_MPPE_ADDRESS_MASK;
1872
1873 mtspr(SPRN_MPPR, mpp_addr | PPC_MPPR_FETCH_ABORT);
1874 logmpp(mpp_addr | PPC_LOGMPP_LOG_L2);
1875
1876 vc->mpp_buffer_is_valid = true;
1877}
1878
1879static void kvmppc_start_restoring_l2_cache(const struct kvmppc_vcore *vc)
1880{
1881 phys_addr_t phy_addr, mpp_addr;
1882
1883 phy_addr = virt_to_phys(vc->mpp_buffer);
1884 mpp_addr = phy_addr & PPC_MPPE_ADDRESS_MASK;
1885
1886 /* We must abort any in-progress save operations to ensure
1887 * the table is valid so that prefetch engine knows when to
1888 * stop prefetching. */
1889 logmpp(mpp_addr | PPC_LOGMPP_LOG_ABORT);
1890 mtspr(SPRN_MPPR, mpp_addr | PPC_MPPR_FETCH_WHOLE_TABLE);
1891}
1892
d911f0be
PM		 1893static void prepare_threads(struct kvmppc_vcore *vc)
1894{
1895 struct kvm_vcpu *vcpu, *vnext;
1896
1897 list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads,
1898 arch.run_list) {
1899 if (signal_pending(vcpu->arch.run_task))
1900 vcpu->arch.ret = -EINTR;
1901 else if (vcpu->arch.vpa.update_pending ||
1902 vcpu->arch.slb_shadow.update_pending ||
1903 vcpu->arch.dtl.update_pending)
1904 vcpu->arch.ret = RESUME_GUEST;
1905 else
1906 continue;
1907 kvmppc_remove_runnable(vc, vcpu);
1908 wake_up(&vcpu->arch.cpu_run);
1909 }
1910}
1911
25fedfca
PM		 1912static void post_guest_process(struct kvmppc_vcore *vc)
1913{
1914 u64 now;
1915 long ret;
1916 struct kvm_vcpu *vcpu, *vnext;
1917
1918 now = get_tb();
1919 list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads,
1920 arch.run_list) {
1921 /* cancel pending dec exception if dec is positive */
1922 if (now < vcpu->arch.dec_expires &&
1923 kvmppc_core_pending_dec(vcpu))
1924 kvmppc_core_dequeue_dec(vcpu);
1925
1926 trace_kvm_guest_exit(vcpu);
1927
1928 ret = RESUME_GUEST;
1929 if (vcpu->arch.trap)
1930 ret = kvmppc_handle_exit_hv(vcpu->arch.kvm_run, vcpu,
1931 vcpu->arch.run_task);
1932
1933 vcpu->arch.ret = ret;
1934 vcpu->arch.trap = 0;
1935
1936 if (vcpu->arch.ceded) {
1937 if (!is_kvmppc_resume_guest(ret))
1938 kvmppc_end_cede(vcpu);
1939 else
1940 kvmppc_set_timer(vcpu);
1941 }
1942 if (!is_kvmppc_resume_guest(vcpu->arch.ret)) {
1943 kvmppc_remove_runnable(vc, vcpu);
1944 wake_up(&vcpu->arch.cpu_run);
1945 }
1946 }
1947}
1948
371fefd6
PM		 1949/*
1950 * Run a set of guest threads on a physical core.
1951 * Called with vc->lock held.
1952 */
66feed61 1953static noinline void kvmppc_run_core(struct kvmppc_vcore *vc)
371fefd6 1954{
17d48901 1955 struct kvm_vcpu *vcpu, *vnext;
d911f0be 1956 int i;
2c9097e4 1957 int srcu_idx;
371fefd6 1958
d911f0be
PM		 1959 /*
1960 * Remove from the list any threads that have a signal pending
1961 * or need a VPA update done
1962 */
1963 prepare_threads(vc);
1964
1965 /* if the runner is no longer runnable, let the caller pick a new one */
1966 if (vc->runner->arch.state != KVMPPC_VCPU_RUNNABLE)
1967 return;
081f323b
PM		 1968
1969 /*
d911f0be 1970 * Initialize *vc.
081f323b 1971 */
7d6c40da 1972 vc->entry_exit_map = 0;
2711e248 1973 vc->preempt_tb = TB_NIL;
081f323b
PM		 1974 vc->in_guest = 0;
1975 vc->napping_threads = 0;
90fd09f8 1976 vc->conferring_threads = 0;
081f323b 1977
7b444c67 1978 /*
3102f784
ME		 1979 * Make sure we are running on primary threads, and that secondary
1980 * threads are offline. Also check if the number of threads in this
1981 * guest are greater than the current system threads per guest.
7b444c67 1982 */
3102f784
ME		 1983 if ((threads_per_core > 1) &&
1984 ((vc->num_threads > threads_per_subcore) || !on_primary_thread())) {
17d48901
PM		 1985 list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads,
1986 arch.run_list) {
7b444c67 1987 vcpu->arch.ret = -EBUSY;
25fedfca
PM		 1988 kvmppc_remove_runnable(vc, vcpu);
1989 wake_up(&vcpu->arch.cpu_run);
1990 }
7b444c67
PM		 1991 goto out;
1992 }
1993
3102f784 1994
371fefd6 1995 vc->pcpu = smp_processor_id();
2e25aa5f 1996 list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) {
371fefd6 1997 kvmppc_start_thread(vcpu);
0456ec4f 1998 kvmppc_create_dtl_entry(vcpu, vc);
3c78f78a 1999 trace_kvm_guest_enter(vcpu);
2e25aa5f 2000 }
371fefd6 2001
e0b7ec05
PM		 2002 /* Set this explicitly in case thread 0 doesn't have a vcpu */
2003 get_paca()->kvm_hstate.kvm_vcore = vc;
2004 get_paca()->kvm_hstate.ptid = 0;
2005
2f12f034 2006 vc->vcore_state = VCORE_RUNNING;
19ccb76a 2007 preempt_disable();
3c78f78a
SW		 2008
2009 trace_kvmppc_run_core(vc, 0);
2010
371fefd6 2011 spin_unlock(&vc->lock);
de56a948 2012
371fefd6 2013 kvm_guest_enter();
2c9097e4 2014
e0b7ec05 2015 srcu_idx = srcu_read_lock(&vc->kvm->srcu);
2c9097e4 2016
9678cdaa
SS		 2017 if (vc->mpp_buffer_is_valid)
2018 kvmppc_start_restoring_l2_cache(vc);
2019
e0b7ec05 2020 __kvmppc_vcore_entry();
de56a948 2021
371fefd6 2022 spin_lock(&vc->lock);
9678cdaa
SS		 2023
2024 if (vc->mpp_buffer)
2025 kvmppc_start_saving_l2_cache(vc);
2026
19ccb76a
PM		 2027 /* disable sending of IPIs on virtual external irqs */
2028 list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list)
2029 vcpu->cpu = -1;
2030 /* wait for secondary threads to finish writing their state to memory */
5d5b99cd 2031 kvmppc_wait_for_nap();
3102f784 2032 for (i = 0; i < threads_per_subcore; ++i)
2f12f034 2033 kvmppc_release_hwthread(vc->pcpu + i);
371fefd6 2034 /* prevent other vcpu threads from doing kvmppc_start_thread() now */
19ccb76a 2035 vc->vcore_state = VCORE_EXITING;
371fefd6
PM		 2036 spin_unlock(&vc->lock);
2037
e0b7ec05 2038 srcu_read_unlock(&vc->kvm->srcu, srcu_idx);
2c9097e4 2039
371fefd6
PM		 2040 /* make sure updates to secondary vcpu structs are visible now */
2041 smp_mb();
de56a948
PM		 2042 kvm_guest_exit();
2043
2044 preempt_enable();
de56a948 2045
913d3ff9 2046 spin_lock(&vc->lock);
25fedfca 2047 post_guest_process(vc);
de56a948
PM		 2048
2049 out:
19ccb76a 2050 vc->vcore_state = VCORE_INACTIVE;
3c78f78a 2051 trace_kvmppc_run_core(vc, 1);
371fefd6
PM		 2052}
2053
19ccb76a
PM		 2054/*
2055 * Wait for some other vcpu thread to execute us, and
2056 * wake us up when we need to handle something in the host.
2057 */
2058static void kvmppc_wait_for_exec(struct kvm_vcpu *vcpu, int wait_state)
371fefd6 2059{
371fefd6
PM		 2060 DEFINE_WAIT(wait);
2061
19ccb76a
PM		 2062 prepare_to_wait(&vcpu->arch.cpu_run, &wait, wait_state);
2063 if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE)
2064 schedule();
2065 finish_wait(&vcpu->arch.cpu_run, &wait);
2066}
2067
2068/*
2069 * All the vcpus in this vcore are idle, so wait for a decrementer
2070 * or external interrupt to one of the vcpus. vc->lock is held.
2071 */
2072static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc)
2073{
1bc5d59c
SW		 2074 struct kvm_vcpu *vcpu;
2075 int do_sleep = 1;
2076
19ccb76a 2077 DEFINE_WAIT(wait);
19ccb76a
PM		 2078
2079 prepare_to_wait(&vc->wq, &wait, TASK_INTERRUPTIBLE);
1bc5d59c
SW		 2080
2081 /*
2082 * Check one last time for pending exceptions and ceded state after
2083 * we put ourselves on the wait queue
2084 */
2085 list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) {
2086 if (vcpu->arch.pending_exceptions || !vcpu->arch.ceded) {
2087 do_sleep = 0;
2088 break;
2089 }
2090 }
2091
2092 if (!do_sleep) {
2093 finish_wait(&vc->wq, &wait);
2094 return;
2095 }
2096
19ccb76a 2097 vc->vcore_state = VCORE_SLEEPING;
3c78f78a 2098 trace_kvmppc_vcore_blocked(vc, 0);
19ccb76a 2099 spin_unlock(&vc->lock);
913d3ff9 2100 schedule();
19ccb76a
PM		 2101 finish_wait(&vc->wq, &wait);
2102 spin_lock(&vc->lock);
2103 vc->vcore_state = VCORE_INACTIVE;
3c78f78a 2104 trace_kvmppc_vcore_blocked(vc, 1);
19ccb76a 2105}
371fefd6 2106
19ccb76a
PM		 2107static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
2108{
2109 int n_ceded;
19ccb76a
PM		 2110 struct kvmppc_vcore *vc;
2111 struct kvm_vcpu *v, *vn;
9e368f29 2112
3c78f78a
SW		 2113 trace_kvmppc_run_vcpu_enter(vcpu);
2114
371fefd6
PM		 2115 kvm_run->exit_reason = 0;
2116 vcpu->arch.ret = RESUME_GUEST;
2117 vcpu->arch.trap = 0;
2f12f034 2118 kvmppc_update_vpas(vcpu);
371fefd6 2119
371fefd6
PM		 2120 /*
2121 * Synchronize with other threads in this virtual core
2122 */
2123 vc = vcpu->arch.vcore;
2124 spin_lock(&vc->lock);
19ccb76a 2125 vcpu->arch.ceded = 0;
371fefd6
PM		 2126 vcpu->arch.run_task = current;
2127 vcpu->arch.kvm_run = kvm_run;
c7b67670 2128 vcpu->arch.stolen_logged = vcore_stolen_time(vc, mftb());
19ccb76a 2129 vcpu->arch.state = KVMPPC_VCPU_RUNNABLE;
c7b67670 2130 vcpu->arch.busy_preempt = TB_NIL;
371fefd6
PM		 2131 list_add_tail(&vcpu->arch.run_list, &vc->runnable_threads);
2132 ++vc->n_runnable;
2133
19ccb76a
PM		 2134 /*
2135 * This happens the first time this is called for a vcpu.
2136 * If the vcore is already running, we may be able to start
2137 * this thread straight away and have it join in.
2138 */
8455d79e 2139 if (!signal_pending(current)) {
7d6c40da 2140 if (vc->vcore_state == VCORE_RUNNING && !VCORE_IS_EXITING(vc)) {
2f12f034 2141 kvmppc_create_dtl_entry(vcpu, vc);
19ccb76a 2142 kvmppc_start_thread(vcpu);
3c78f78a 2143 trace_kvm_guest_enter(vcpu);
8455d79e
PM		 2144 } else if (vc->vcore_state == VCORE_SLEEPING) {
2145 wake_up(&vc->wq);
371fefd6
PM		 2146 }
2147
8455d79e 2148 }
371fefd6 2149
19ccb76a
PM		 2150 while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE &&
2151 !signal_pending(current)) {
8455d79e 2152 if (vc->vcore_state != VCORE_INACTIVE) {
19ccb76a
PM		 2153 spin_unlock(&vc->lock);
2154 kvmppc_wait_for_exec(vcpu, TASK_INTERRUPTIBLE);
2155 spin_lock(&vc->lock);
2156 continue;
2157 }
19ccb76a
PM		 2158 list_for_each_entry_safe(v, vn, &vc->runnable_threads,
2159 arch.run_list) {
7e28e60e 2160 kvmppc_core_prepare_to_enter(v);
19ccb76a
PM		 2161 if (signal_pending(v->arch.run_task)) {
2162 kvmppc_remove_runnable(vc, v);
2163 v->stat.signal_exits++;
2164 v->arch.kvm_run->exit_reason = KVM_EXIT_INTR;
2165 v->arch.ret = -EINTR;
2166 wake_up(&v->arch.cpu_run);
2167 }
2168 }
8455d79e
PM		 2169 if (!vc->n_runnable || vcpu->arch.state != KVMPPC_VCPU_RUNNABLE)
2170 break;
8455d79e 2171 n_ceded = 0;
4619ac88 2172 list_for_each_entry(v, &vc->runnable_threads, arch.run_list) {
8455d79e
PM		 2173 if (!v->arch.pending_exceptions)
2174 n_ceded += v->arch.ceded;
4619ac88
PM		 2175 else
2176 v->arch.ceded = 0;
2177 }
25fedfca
PM		 2178 vc->runner = vcpu;
2179 if (n_ceded == vc->n_runnable) {
8455d79e 2180 kvmppc_vcore_blocked(vc);
25fedfca
PM		 2181 } else if (should_resched()) {
2182 vc->vcore_state = VCORE_PREEMPT;
2183 /* Let something else run */
2184 cond_resched_lock(&vc->lock);
2185 vc->vcore_state = VCORE_INACTIVE;
2186 } else {
8455d79e 2187 kvmppc_run_core(vc);
25fedfca 2188 }
0456ec4f 2189 vc->runner = NULL;
19ccb76a 2190 }
371fefd6 2191
8455d79e
PM		 2192 while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE &&
2193 (vc->vcore_state == VCORE_RUNNING ||
2194 vc->vcore_state == VCORE_EXITING)) {
2195 spin_unlock(&vc->lock);
2196 kvmppc_wait_for_exec(vcpu, TASK_UNINTERRUPTIBLE);
2197 spin_lock(&vc->lock);
2198 }
2199
2200 if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) {
2201 kvmppc_remove_runnable(vc, vcpu);
2202 vcpu->stat.signal_exits++;
2203 kvm_run->exit_reason = KVM_EXIT_INTR;
2204 vcpu->arch.ret = -EINTR;
2205 }
2206
2207 if (vc->n_runnable && vc->vcore_state == VCORE_INACTIVE) {
2208 /* Wake up some vcpu to run the core */
2209 v = list_first_entry(&vc->runnable_threads,
2210 struct kvm_vcpu, arch.run_list);
2211 wake_up(&v->arch.cpu_run);
371fefd6
PM		 2212 }
2213
3c78f78a 2214 trace_kvmppc_run_vcpu_exit(vcpu, kvm_run);
371fefd6 2215 spin_unlock(&vc->lock);
371fefd6 2216 return vcpu->arch.ret;
de56a948
PM		 2217}
2218
3a167bea 2219static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu)
a8606e20
PM		 2220{
2221 int r;
913d3ff9 2222 int srcu_idx;
a8606e20 2223
af8f38b3
AG		 2224 if (!vcpu->arch.sane) {
2225 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
2226 return -EINVAL;
2227 }
2228
25051b5a
SW		 2229 kvmppc_core_prepare_to_enter(vcpu);
2230
19ccb76a
PM		 2231 /* No need to go into the guest when all we'll do is come back out */
2232 if (signal_pending(current)) {
2233 run->exit_reason = KVM_EXIT_INTR;
2234 return -EINTR;
2235 }
2236
32fad281 2237 atomic_inc(&vcpu->kvm->arch.vcpus_running);
31037eca 2238 /* Order vcpus_running vs. hpte_setup_done, see kvmppc_alloc_reset_hpt */
32fad281
PM		 2239 smp_mb();
2240
c17b98cf 2241 /* On the first time here, set up HTAB and VRMA */
31037eca 2242 if (!vcpu->kvm->arch.hpte_setup_done) {
32fad281 2243 r = kvmppc_hv_setup_htab_rma(vcpu);
c77162de 2244 if (r)
32fad281 2245 goto out;
c77162de 2246 }
19ccb76a
PM		 2247
2248 flush_fp_to_thread(current);
2249 flush_altivec_to_thread(current);
2250 flush_vsx_to_thread(current);
2251 vcpu->arch.wqp = &vcpu->arch.vcore->wq;
342d3db7 2252 vcpu->arch.pgdir = current->mm->pgd;
c7b67670 2253 vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
19ccb76a 2254
a8606e20
PM		 2255 do {
2256 r = kvmppc_run_vcpu(run, vcpu);
2257
2258 if (run->exit_reason == KVM_EXIT_PAPR_HCALL &&
2259 !(vcpu->arch.shregs.msr & MSR_PR)) {
3c78f78a 2260 trace_kvm_hcall_enter(vcpu);
a8606e20 2261 r = kvmppc_pseries_do_hcall(vcpu);
3c78f78a 2262 trace_kvm_hcall_exit(vcpu, r);
7e28e60e 2263 kvmppc_core_prepare_to_enter(vcpu);
913d3ff9
PM		 2264 } else if (r == RESUME_PAGE_FAULT) {
2265 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
2266 r = kvmppc_book3s_hv_page_fault(run, vcpu,
2267 vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
2268 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
a8606e20 2269 }
e59d24e6 2270 } while (is_kvmppc_resume_guest(r));
32fad281
PM		 2271
2272 out:
c7b67670 2273 vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
32fad281 2274 atomic_dec(&vcpu->kvm->arch.vcpus_running);
a8606e20
PM		 2275 return r;
2276}
2277
5b74716e
BH		 2278static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps,
2279 int linux_psize)
2280{
2281 struct mmu_psize_def *def = &mmu_psize_defs[linux_psize];
2282
2283 if (!def->shift)
2284 return;
2285 (*sps)->page_shift = def->shift;
2286 (*sps)->slb_enc = def->sllp;
2287 (*sps)->enc[0].page_shift = def->shift;
b1022fbd 2288 (*sps)->enc[0].pte_enc = def->penc[linux_psize];
1f365bb0
AK		 2289 /*
2290 * Add 16MB MPSS support if host supports it
2291 */
2292 if (linux_psize != MMU_PAGE_16M && def->penc[MMU_PAGE_16M] != -1) {
2293 (*sps)->enc[1].page_shift = 24;
2294 (*sps)->enc[1].pte_enc = def->penc[MMU_PAGE_16M];
2295 }
5b74716e
BH		 2296 (*sps)++;
2297}
2298
3a167bea
AK		 2299static int kvm_vm_ioctl_get_smmu_info_hv(struct kvm *kvm,
2300 struct kvm_ppc_smmu_info *info)
5b74716e
BH		 2301{
2302 struct kvm_ppc_one_seg_page_size *sps;
2303
2304 info->flags = KVM_PPC_PAGE_SIZES_REAL;
2305 if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
2306 info->flags |= KVM_PPC_1T_SEGMENTS;
2307 info->slb_size = mmu_slb_size;
2308
2309 /* We only support these sizes for now, and no muti-size segments */
2310 sps = &info->sps[0];
2311 kvmppc_add_seg_page_size(&sps, MMU_PAGE_4K);
2312 kvmppc_add_seg_page_size(&sps, MMU_PAGE_64K);
2313 kvmppc_add_seg_page_size(&sps, MMU_PAGE_16M);
2314
2315 return 0;
2316}
2317
82ed3616
PM		 2318/*
2319 * Get (and clear) the dirty memory log for a memory slot.
2320 */
3a167bea
AK		 2321static int kvm_vm_ioctl_get_dirty_log_hv(struct kvm *kvm,
2322 struct kvm_dirty_log *log)
82ed3616
PM		 2323{
2324 struct kvm_memory_slot *memslot;
2325 int r;
2326 unsigned long n;
2327
2328 mutex_lock(&kvm->slots_lock);
2329
2330 r = -EINVAL;
bbacc0c1 2331 if (log->slot >= KVM_USER_MEM_SLOTS)
82ed3616
PM		 2332 goto out;
2333
2334 memslot = id_to_memslot(kvm->memslots, log->slot);
2335 r = -ENOENT;
2336 if (!memslot->dirty_bitmap)
2337 goto out;
2338
2339 n = kvm_dirty_bitmap_bytes(memslot);
2340 memset(memslot->dirty_bitmap, 0, n);
2341
dfe49dbd 2342 r = kvmppc_hv_get_dirty_log(kvm, memslot, memslot->dirty_bitmap);
82ed3616
PM		 2343 if (r)
2344 goto out;
2345
2346 r = -EFAULT;
2347 if (copy_to_user(log->dirty_bitmap, memslot->dirty_bitmap, n))
2348 goto out;
2349
2350 r = 0;
2351out:
2352 mutex_unlock(&kvm->slots_lock);
2353 return r;
2354}
2355
3a167bea
AK		 2356static void kvmppc_core_free_memslot_hv(struct kvm_memory_slot *free,
2357 struct kvm_memory_slot *dont)
a66b48c3
PM		 2358{
2359 if (!dont || free->arch.rmap != dont->arch.rmap) {
2360 vfree(free->arch.rmap);
2361 free->arch.rmap = NULL;
b2b2f165 2362 }
a66b48c3
PM		 2363}
2364
3a167bea
AK		 2365static int kvmppc_core_create_memslot_hv(struct kvm_memory_slot *slot,
2366 unsigned long npages)
a66b48c3
PM		 2367{
2368 slot->arch.rmap = vzalloc(npages * sizeof(*slot->arch.rmap));
2369 if (!slot->arch.rmap)
2370 return -ENOMEM;
aa04b4cc 2371
c77162de
PM		 2372 return 0;
2373}
aa04b4cc 2374
3a167bea
AK		 2375static int kvmppc_core_prepare_memory_region_hv(struct kvm *kvm,
2376 struct kvm_memory_slot *memslot,
2377 struct kvm_userspace_memory_region *mem)
c77162de 2378{
a66b48c3 2379 return 0;
c77162de
PM		 2380}
2381
3a167bea
AK		 2382static void kvmppc_core_commit_memory_region_hv(struct kvm *kvm,
2383 struct kvm_userspace_memory_region *mem,
2384 const struct kvm_memory_slot *old)
c77162de 2385{
dfe49dbd
PM		 2386 unsigned long npages = mem->memory_size >> PAGE_SHIFT;
2387 struct kvm_memory_slot *memslot;
2388
8482644a 2389 if (npages && old->npages) {
dfe49dbd
PM		 2390 /*
2391 * If modifying a memslot, reset all the rmap dirty bits.
2392 * If this is a new memslot, we don't need to do anything
2393 * since the rmap array starts out as all zeroes,
2394 * i.e. no pages are dirty.
2395 */
2396 memslot = id_to_memslot(kvm->memslots, mem->slot);
2397 kvmppc_hv_get_dirty_log(kvm, memslot, NULL);
2398 }
c77162de
PM		 2399}
2400
a0144e2a
PM		 2401/*
2402 * Update LPCR values in kvm->arch and in vcores.
2403 * Caller must hold kvm->lock.
2404 */
2405void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, unsigned long mask)
2406{
2407 long int i;
2408 u32 cores_done = 0;
2409
2410 if ((kvm->arch.lpcr & mask) == lpcr)
2411 return;
2412
2413 kvm->arch.lpcr = (kvm->arch.lpcr & ~mask) | lpcr;
2414
2415 for (i = 0; i < KVM_MAX_VCORES; ++i) {
2416 struct kvmppc_vcore *vc = kvm->arch.vcores[i];
2417 if (!vc)
2418 continue;
2419 spin_lock(&vc->lock);
2420 vc->lpcr = (vc->lpcr & ~mask) | lpcr;
2421 spin_unlock(&vc->lock);
2422 if (++cores_done >= kvm->arch.online_vcores)
2423 break;
2424 }
2425}
2426
3a167bea
AK		 2427static void kvmppc_mmu_destroy_hv(struct kvm_vcpu *vcpu)
2428{
2429 return;
2430}
2431
32fad281 2432static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu)
c77162de
PM		 2433{
2434 int err = 0;
2435 struct kvm *kvm = vcpu->kvm;
c77162de
PM		 2436 unsigned long hva;
2437 struct kvm_memory_slot *memslot;
2438 struct vm_area_struct *vma;
a0144e2a 2439 unsigned long lpcr = 0, senc;
c77162de 2440 unsigned long psize, porder;
2c9097e4 2441 int srcu_idx;
c77162de
PM		 2442
2443 mutex_lock(&kvm->lock);
31037eca 2444 if (kvm->arch.hpte_setup_done)
c77162de 2445 goto out; /* another vcpu beat us to it */
aa04b4cc 2446
32fad281
PM		 2447 /* Allocate hashed page table (if not done already) and reset it */
2448 if (!kvm->arch.hpt_virt) {
2449 err = kvmppc_alloc_hpt(kvm, NULL);
2450 if (err) {
2451 pr_err("KVM: Couldn't alloc HPT\n");
2452 goto out;
2453 }
2454 }
2455
c77162de 2456 /* Look up the memslot for guest physical address 0 */
2c9097e4 2457 srcu_idx = srcu_read_lock(&kvm->srcu);
c77162de 2458 memslot = gfn_to_memslot(kvm, 0);
aa04b4cc 2459
c77162de
PM		 2460 /* We must have some memory at 0 by now */
2461 err = -EINVAL;
2462 if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID))
2c9097e4 2463 goto out_srcu;
c77162de
PM		 2464
2465 /* Look up the VMA for the start of this memory slot */
2466 hva = memslot->userspace_addr;
2467 down_read(&current->mm->mmap_sem);
2468 vma = find_vma(current->mm, hva);
2469 if (!vma || vma->vm_start > hva || (vma->vm_flags & VM_IO))
2470 goto up_out;
2471
2472 psize = vma_kernel_pagesize(vma);
da9d1d7f 2473 porder = __ilog2(psize);
c77162de 2474
c77162de
PM		 2475 up_read(&current->mm->mmap_sem);
2476
c17b98cf
PM		 2477 /* We can handle 4k, 64k or 16M pages in the VRMA */
2478 err = -EINVAL;
2479 if (!(psize == 0x1000 || psize == 0x10000 ||
2480 psize == 0x1000000))
2481 goto out_srcu;
c77162de 2482
c17b98cf
PM		 2483 /* Update VRMASD field in the LPCR */
2484 senc = slb_pgsize_encoding(psize);
2485 kvm->arch.vrma_slb_v = senc | SLB_VSID_B_1T |
2486 (VRMA_VSID << SLB_VSID_SHIFT_1T);
2487 /* the -4 is to account for senc values starting at 0x10 */
2488 lpcr = senc << (LPCR_VRMASD_SH - 4);
c77162de 2489
c17b98cf
PM		 2490 /* Create HPTEs in the hash page table for the VRMA */
2491 kvmppc_map_vrma(vcpu, memslot, porder);
aa04b4cc 2492
c17b98cf 2493 kvmppc_update_lpcr(kvm, lpcr, LPCR_VRMASD);
a0144e2a 2494
31037eca 2495 /* Order updates to kvm->arch.lpcr etc. vs. hpte_setup_done */
c77162de 2496 smp_wmb();
31037eca 2497 kvm->arch.hpte_setup_done = 1;
c77162de 2498 err = 0;
2c9097e4
PM		 2499 out_srcu:
2500 srcu_read_unlock(&kvm->srcu, srcu_idx);
c77162de
PM		 2501 out:
2502 mutex_unlock(&kvm->lock);
2503 return err;
b2b2f165 2504
c77162de
PM		 2505 up_out:
2506 up_read(&current->mm->mmap_sem);
505d6421 2507 goto out_srcu;
de56a948
PM		 2508}
2509
3a167bea 2510static int kvmppc_core_init_vm_hv(struct kvm *kvm)
de56a948 2511{
32fad281 2512 unsigned long lpcr, lpid;
e23a808b 2513 char buf[32];
de56a948 2514
32fad281
PM		 2515 /* Allocate the guest's logical partition ID */
2516
2517 lpid = kvmppc_alloc_lpid();
5d226ae5 2518 if ((long)lpid < 0)
32fad281
PM		 2519 return -ENOMEM;
2520 kvm->arch.lpid = lpid;
de56a948 2521
1b400ba0
PM		 2522 /*
2523 * Since we don't flush the TLB when tearing down a VM,
2524 * and this lpid might have previously been used,
2525 * make sure we flush on each core before running the new VM.
2526 */
2527 cpumask_setall(&kvm->arch.need_tlb_flush);
2528
699a0ea0
PM		 2529 /* Start out with the default set of hcalls enabled */
2530 memcpy(kvm->arch.enabled_hcalls, default_enabled_hcalls,
2531 sizeof(kvm->arch.enabled_hcalls));
2532
9e368f29 2533 kvm->arch.host_sdr1 = mfspr(SPRN_SDR1);
aa04b4cc 2534
c17b98cf
PM		 2535 /* Init LPCR for virtual RMA mode */
2536 kvm->arch.host_lpid = mfspr(SPRN_LPID);
2537 kvm->arch.host_lpcr = lpcr = mfspr(SPRN_LPCR);
2538 lpcr &= LPCR_PECE | LPCR_LPES;
2539 lpcr |= (4UL << LPCR_DPFD_SH) | LPCR_HDICE |
2540 LPCR_VPM0 | LPCR_VPM1;
2541 kvm->arch.vrma_slb_v = SLB_VSID_B_1T |
2542 (VRMA_VSID << SLB_VSID_SHIFT_1T);
2543 /* On POWER8 turn on online bit to enable PURR/SPURR */
2544 if (cpu_has_feature(CPU_FTR_ARCH_207S))
2545 lpcr |= LPCR_ONL;
9e368f29 2546 kvm->arch.lpcr = lpcr;
aa04b4cc 2547
512691d4 2548 /*
441c19c8
ME		 2549 * Track that we now have a HV mode VM active. This blocks secondary
2550 * CPU threads from coming online.
512691d4 2551 */
441c19c8 2552 kvm_hv_vm_activated();
512691d4 2553
e23a808b
PM		 2554 /*
2555 * Create a debugfs directory for the VM
2556 */
2557 snprintf(buf, sizeof(buf), "vm%d", current->pid);
2558 kvm->arch.debugfs_dir = debugfs_create_dir(buf, kvm_debugfs_dir);
2559 if (!IS_ERR_OR_NULL(kvm->arch.debugfs_dir))
2560 kvmppc_mmu_debugfs_init(kvm);
2561
54738c09 2562 return 0;
de56a948
PM		 2563}
2564
f1378b1c
PM		 2565static void kvmppc_free_vcores(struct kvm *kvm)
2566{
2567 long int i;
2568
9678cdaa
SS		 2569 for (i = 0; i < KVM_MAX_VCORES; ++i) {
2570 if (kvm->arch.vcores[i] && kvm->arch.vcores[i]->mpp_buffer) {
2571 struct kvmppc_vcore *vc = kvm->arch.vcores[i];
2572 free_pages((unsigned long)vc->mpp_buffer,
2573 MPP_BUFFER_ORDER);
2574 }
f1378b1c 2575 kfree(kvm->arch.vcores[i]);
9678cdaa 2576 }
f1378b1c
PM		 2577 kvm->arch.online_vcores = 0;
2578}
2579
3a167bea 2580static void kvmppc_core_destroy_vm_hv(struct kvm *kvm)
de56a948 2581{
e23a808b
PM		 2582 debugfs_remove_recursive(kvm->arch.debugfs_dir);
2583
441c19c8 2584 kvm_hv_vm_deactivated();
512691d4 2585
f1378b1c 2586 kvmppc_free_vcores(kvm);
aa04b4cc 2587
de56a948
PM		 2588 kvmppc_free_hpt(kvm);
2589}
2590
3a167bea
AK		 2591/* We don't need to emulate any privileged instructions or dcbz */
2592static int kvmppc_core_emulate_op_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
2593 unsigned int inst, int *advance)
de56a948 2594{
3a167bea 2595 return EMULATE_FAIL;
de56a948
PM		 2596}
2597
3a167bea
AK		 2598static int kvmppc_core_emulate_mtspr_hv(struct kvm_vcpu *vcpu, int sprn,
2599 ulong spr_val)
de56a948
PM		 2600{
2601 return EMULATE_FAIL;
2602}
2603
3a167bea
AK		 2604static int kvmppc_core_emulate_mfspr_hv(struct kvm_vcpu *vcpu, int sprn,
2605 ulong *spr_val)
de56a948
PM		 2606{
2607 return EMULATE_FAIL;
2608}
2609
3a167bea 2610static int kvmppc_core_check_processor_compat_hv(void)
de56a948 2611{
c17b98cf
PM		 2612 if (!cpu_has_feature(CPU_FTR_HVMODE) ||
2613 !cpu_has_feature(CPU_FTR_ARCH_206))
3a167bea
AK		 2614 return -EIO;
2615 return 0;
de56a948
PM		 2616}
2617
3a167bea
AK		 2618static long kvm_arch_vm_ioctl_hv(struct file *filp,
2619 unsigned int ioctl, unsigned long arg)
2620{
2621 struct kvm *kvm __maybe_unused = filp->private_data;
2622 void __user *argp = (void __user *)arg;
2623 long r;
2624
2625 switch (ioctl) {
2626
3a167bea
AK		 2627 case KVM_PPC_ALLOCATE_HTAB: {
2628 u32 htab_order;
2629
2630 r = -EFAULT;
2631 if (get_user(htab_order, (u32 __user *)argp))
2632 break;
2633 r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
2634 if (r)
2635 break;
2636 r = -EFAULT;
2637 if (put_user(htab_order, (u32 __user *)argp))
2638 break;
2639 r = 0;
2640 break;
2641 }
2642
2643 case KVM_PPC_GET_HTAB_FD: {
2644 struct kvm_get_htab_fd ghf;
2645
2646 r = -EFAULT;
2647 if (copy_from_user(&ghf, argp, sizeof(ghf)))
2648 break;
2649 r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf);
2650 break;
2651 }
2652
2653 default:
2654 r = -ENOTTY;
2655 }
2656
2657 return r;
2658}
2659
699a0ea0
PM		 2660/*
2661 * List of hcall numbers to enable by default.
2662 * For compatibility with old userspace, we enable by default
2663 * all hcalls that were implemented before the hcall-enabling
2664 * facility was added. Note this list should not include H_RTAS.
2665 */
2666static unsigned int default_hcall_list[] = {
2667 H_REMOVE,
2668 H_ENTER,
2669 H_READ,
2670 H_PROTECT,
2671 H_BULK_REMOVE,
2672 H_GET_TCE,
2673 H_PUT_TCE,
2674 H_SET_DABR,
2675 H_SET_XDABR,
2676 H_CEDE,
2677 H_PROD,
2678 H_CONFER,
2679 H_REGISTER_VPA,
2680#ifdef CONFIG_KVM_XICS
2681 H_EOI,
2682 H_CPPR,
2683 H_IPI,
2684 H_IPOLL,
2685 H_XIRR,
2686 H_XIRR_X,
2687#endif
2688 0
2689};
2690
2691static void init_default_hcalls(void)
2692{
2693 int i;
ae2113a4 2694 unsigned int hcall;
699a0ea0 2695
ae2113a4
PM		 2696 for (i = 0; default_hcall_list[i]; ++i) {
2697 hcall = default_hcall_list[i];
2698 WARN_ON(!kvmppc_hcall_impl_hv(hcall));
2699 __set_bit(hcall / 4, default_enabled_hcalls);
2700 }
699a0ea0
PM		 2701}
2702
cbbc58d4 2703static struct kvmppc_ops kvm_ops_hv = {
3a167bea
AK		 2704 .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_hv,
2705 .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_hv,
2706 .get_one_reg = kvmppc_get_one_reg_hv,
2707 .set_one_reg = kvmppc_set_one_reg_hv,
2708 .vcpu_load = kvmppc_core_vcpu_load_hv,
2709 .vcpu_put = kvmppc_core_vcpu_put_hv,
2710 .set_msr = kvmppc_set_msr_hv,
2711 .vcpu_run = kvmppc_vcpu_run_hv,
2712 .vcpu_create = kvmppc_core_vcpu_create_hv,
2713 .vcpu_free = kvmppc_core_vcpu_free_hv,
2714 .check_requests = kvmppc_core_check_requests_hv,
2715 .get_dirty_log = kvm_vm_ioctl_get_dirty_log_hv,
2716 .flush_memslot = kvmppc_core_flush_memslot_hv,
2717 .prepare_memory_region = kvmppc_core_prepare_memory_region_hv,
2718 .commit_memory_region = kvmppc_core_commit_memory_region_hv,
2719 .unmap_hva = kvm_unmap_hva_hv,
2720 .unmap_hva_range = kvm_unmap_hva_range_hv,
2721 .age_hva = kvm_age_hva_hv,
2722 .test_age_hva = kvm_test_age_hva_hv,
2723 .set_spte_hva = kvm_set_spte_hva_hv,
2724 .mmu_destroy = kvmppc_mmu_destroy_hv,
2725 .free_memslot = kvmppc_core_free_memslot_hv,
2726 .create_memslot = kvmppc_core_create_memslot_hv,
2727 .init_vm = kvmppc_core_init_vm_hv,
2728 .destroy_vm = kvmppc_core_destroy_vm_hv,
3a167bea
AK		 2729 .get_smmu_info = kvm_vm_ioctl_get_smmu_info_hv,
2730 .emulate_op = kvmppc_core_emulate_op_hv,
2731 .emulate_mtspr = kvmppc_core_emulate_mtspr_hv,
2732 .emulate_mfspr = kvmppc_core_emulate_mfspr_hv,
2733 .fast_vcpu_kick = kvmppc_fast_vcpu_kick_hv,
2734 .arch_vm_ioctl = kvm_arch_vm_ioctl_hv,
ae2113a4 2735 .hcall_implemented = kvmppc_hcall_impl_hv,
3a167bea
AK		 2736};
2737
2738static int kvmppc_book3s_init_hv(void)
de56a948
PM		 2739{
2740 int r;
cbbc58d4
AK		 2741 /*
2742 * FIXME!! Do we need to check on all cpus ?
2743 */
2744 r = kvmppc_core_check_processor_compat_hv();
2745 if (r < 0)
739e2425 2746 return -ENODEV;
de56a948 2747
cbbc58d4
AK		 2748 kvm_ops_hv.owner = THIS_MODULE;
2749 kvmppc_hv_ops = &kvm_ops_hv;
de56a948 2750
699a0ea0
PM		 2751 init_default_hcalls();
2752
cbbc58d4 2753 r = kvmppc_mmu_hv_init();
de56a948
PM		 2754 return r;
2755}
2756
3a167bea 2757static void kvmppc_book3s_exit_hv(void)
de56a948 2758{
cbbc58d4 2759 kvmppc_hv_ops = NULL;
de56a948
PM		 2760}
2761
3a167bea
AK		 2762module_init(kvmppc_book3s_init_hv);
2763module_exit(kvmppc_book3s_exit_hv);
2ba9f0d8 2764MODULE_LICENSE("GPL");
398a76c6
AG		 2765MODULE_ALIAS_MISCDEV(KVM_MINOR);
2766MODULE_ALIAS("devname:kvm");
Linux 6.x block layer and io_uring tree(s)