2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
17 * Author: Varun Sethi <varun.sethi@freescale.com>
18 * Author: Scott Wood <scotwood@freescale.com>
19 * Author: Mihai Caraman <mihai.caraman@freescale.com>
21 * This file is derived from arch/powerpc/kvm/booke_interrupts.S
24 #include <asm/ppc_asm.h>
25 #include <asm/kvm_asm.h>
28 #include <asm/asm-compat.h>
29 #include <asm/asm-offsets.h>
30 #include <asm/bitsperlong.h>
33 #include <asm/exception-64e.h>
34 #include <asm/hw_irq.h>
35 #include <asm/irqflags.h>
37 #include "../kernel/head_booke.h" /* for THREAD_NORMSAVE() */
40 #define LONGBYTES (BITS_PER_LONG / 8)
42 #define VCPU_GUEST_SPRG(n) (VCPU_GUEST_SPRGS + (n * LONGBYTES))
44 /* The host stack layout: */
45 #define HOST_R1 0 /* Implied by stwu. */
46 #define HOST_CALLEE_LR PPC_LR_STKOFF
47 #define HOST_RUN (HOST_CALLEE_LR + LONGBYTES)
49 * r2 is special: it holds 'current', and it made nonvolatile in the
50 * kernel with the -ffixed-r2 gcc option.
52 #define HOST_R2 (HOST_RUN + LONGBYTES)
53 #define HOST_CR (HOST_R2 + LONGBYTES)
54 #define HOST_NV_GPRS (HOST_CR + LONGBYTES)
55 #define __HOST_NV_GPR(n) (HOST_NV_GPRS + ((n - 14) * LONGBYTES))
56 #define HOST_NV_GPR(n) __HOST_NV_GPR(__REG_##n)
57 #define HOST_MIN_STACK_SIZE (HOST_NV_GPR(R31) + LONGBYTES)
58 #define HOST_STACK_SIZE ((HOST_MIN_STACK_SIZE + 15) & ~15) /* Align. */
59 /* LR in caller stack frame. */
60 #define HOST_STACK_LR (HOST_STACK_SIZE + PPC_LR_STKOFF)
62 #define NEED_EMU 0x00000001 /* emulation -- save nv regs */
63 #define NEED_DEAR 0x00000002 /* save faulting DEAR */
64 #define NEED_ESR 0x00000004 /* save faulting ESR */
68 * r4 = vcpu, r5 = srr0, r6 = srr1
69 * saved in vcpu: cr, ctr, r3-r13
71 .macro kvm_handler_common intno, srr0, flags
72 /* Restore host stack pointer */
73 PPC_STL r1, VCPU_GPR(R1)(r4)
74 PPC_STL r2, VCPU_GPR(R2)(r4)
75 PPC_LL r1, VCPU_HOST_STACK(r4)
76 PPC_LL r2, HOST_R2(r1)
78 START_BTB_FLUSH_SECTION
83 lwz r8, VCPU_HOST_PID(r4)
84 PPC_LL r11, VCPU_SHARED(r4)
85 PPC_STL r14, VCPU_GPR(R14)(r4) /* We need a non-volatile GPR. */
88 stw r10, VCPU_GUEST_PID(r4)
91 #ifdef CONFIG_KVM_EXIT_TIMING
93 1: mfspr r7, SPRN_TBRU
97 stw r8, VCPU_TIMING_EXIT_TBL(r4)
99 stw r9, VCPU_TIMING_EXIT_TBU(r4)
102 oris r8, r6, MSR_CE@h
103 PPC_STD(r6, VCPU_SHARED_MSR, r11)
104 ori r8, r8, MSR_ME | MSR_RI
105 PPC_STL r5, VCPU_PC(r4)
108 * Make sure CE/ME/RI are set (if appropriate for exception type)
109 * whether or not the guest had it set. Since mfmsr/mtmsr are
110 * somewhat expensive, skip in the common case where the guest
111 * had all these bits set (and thus they're still set if
112 * appropriate for the exception type).
117 .if \srr0 != SPRN_MCSRR0 && \srr0 != SPRN_CSRR0
118 oris r7, r7, MSR_CE@h
120 .if \srr0 != SPRN_MCSRR0
121 ori r7, r7, MSR_ME | MSR_RI
126 .if \flags & NEED_EMU
127 PPC_STL r15, VCPU_GPR(R15)(r4)
128 PPC_STL r16, VCPU_GPR(R16)(r4)
129 PPC_STL r17, VCPU_GPR(R17)(r4)
130 PPC_STL r18, VCPU_GPR(R18)(r4)
131 PPC_STL r19, VCPU_GPR(R19)(r4)
132 PPC_STL r20, VCPU_GPR(R20)(r4)
133 PPC_STL r21, VCPU_GPR(R21)(r4)
134 PPC_STL r22, VCPU_GPR(R22)(r4)
135 PPC_STL r23, VCPU_GPR(R23)(r4)
136 PPC_STL r24, VCPU_GPR(R24)(r4)
137 PPC_STL r25, VCPU_GPR(R25)(r4)
138 PPC_STL r26, VCPU_GPR(R26)(r4)
139 PPC_STL r27, VCPU_GPR(R27)(r4)
140 PPC_STL r28, VCPU_GPR(R28)(r4)
141 PPC_STL r29, VCPU_GPR(R29)(r4)
142 PPC_STL r30, VCPU_GPR(R30)(r4)
143 PPC_STL r31, VCPU_GPR(R31)(r4)
146 * We don't use external PID support. lwepx faults would need to be
147 * handled by KVM and this implies aditional code in DO_KVM (for
148 * DTB_MISS, DSI and LRAT) to check ESR[EPID] and EPLC[EGS] which
149 * is too intrusive for the host. Get last instuction in
150 * kvmppc_get_last_inst().
152 li r9, KVM_INST_FETCH_FAILED
153 stw r9, VCPU_LAST_INST(r4)
156 .if \flags & NEED_ESR
158 PPC_STL r8, VCPU_FAULT_ESR(r4)
161 .if \flags & NEED_DEAR
163 PPC_STL r9, VCPU_FAULT_DEAR(r4)
170 /* Exception types */
179 * For input register values, see arch/powerpc/include/asm/kvm_booke_hv_asm.h
181 .macro kvm_handler intno type scratch, paca_ex, ex_r10, ex_r11, srr0, srr1, flags
182 _GLOBAL(kvmppc_handler_\intno\()_\srr1)
185 * Get vcpu from Paca: paca->__current.thread->kvm_vcpu
187 PPC_LL r4, PACACURRENT(r13)
188 PPC_LL r4, (THREAD + THREAD_KVM_VCPU)(r4)
190 PPC_STL r11, VCPU_GPR(R4)(r4)
191 PPC_STL r5, VCPU_GPR(R5)(r4)
192 PPC_STL r6, VCPU_GPR(R6)(r4)
193 PPC_STL r8, VCPU_GPR(R8)(r4)
194 PPC_STL r9, VCPU_GPR(R9)(r4)
196 PPC_LL r5, EX_TLB_R13(r12)
197 PPC_LL r6, EX_TLB_R10(r12)
198 PPC_LL r8, EX_TLB_R11(r12)
202 PPC_LL r6, (\paca_ex + \ex_r10)(r13)
203 PPC_LL r8, (\paca_ex + \ex_r11)(r13)
205 PPC_STL r5, VCPU_GPR(R13)(r4)
206 PPC_STL r3, VCPU_GPR(R3)(r4)
207 PPC_STL r7, VCPU_GPR(R7)(r4)
208 PPC_STL r12, VCPU_GPR(R12)(r4)
209 PPC_STL r6, VCPU_GPR(R10)(r4)
210 PPC_STL r8, VCPU_GPR(R11)(r4)
212 PPC_STL r5, VCPU_CTR(r4)
215 kvm_handler_common \intno, \srr0, \flags
218 #define EX_PARAMS(type) \
220 SPRN_SPRG_##type##_SCRATCH, \
225 #define EX_PARAMS_TLB \
227 SPRN_SPRG_GEN_SCRATCH, \
232 kvm_handler BOOKE_INTERRUPT_CRITICAL, EX_PARAMS(CRIT), \
233 SPRN_CSRR0, SPRN_CSRR1, 0
234 kvm_handler BOOKE_INTERRUPT_MACHINE_CHECK, EX_PARAMS(MC), \
235 SPRN_MCSRR0, SPRN_MCSRR1, 0
236 kvm_handler BOOKE_INTERRUPT_DATA_STORAGE, EX_PARAMS(GEN), \
237 SPRN_SRR0, SPRN_SRR1,(NEED_EMU | NEED_DEAR | NEED_ESR)
238 kvm_handler BOOKE_INTERRUPT_INST_STORAGE, EX_PARAMS(GEN), \
239 SPRN_SRR0, SPRN_SRR1, NEED_ESR
240 kvm_handler BOOKE_INTERRUPT_EXTERNAL, EX_PARAMS(GEN), \
241 SPRN_SRR0, SPRN_SRR1, 0
242 kvm_handler BOOKE_INTERRUPT_ALIGNMENT, EX_PARAMS(GEN), \
243 SPRN_SRR0, SPRN_SRR1,(NEED_DEAR | NEED_ESR)
244 kvm_handler BOOKE_INTERRUPT_PROGRAM, EX_PARAMS(GEN), \
245 SPRN_SRR0, SPRN_SRR1, (NEED_ESR | NEED_EMU)
246 kvm_handler BOOKE_INTERRUPT_FP_UNAVAIL, EX_PARAMS(GEN), \
247 SPRN_SRR0, SPRN_SRR1, 0
248 kvm_handler BOOKE_INTERRUPT_AP_UNAVAIL, EX_PARAMS(GEN), \
249 SPRN_SRR0, SPRN_SRR1, 0
250 kvm_handler BOOKE_INTERRUPT_DECREMENTER, EX_PARAMS(GEN), \
251 SPRN_SRR0, SPRN_SRR1, 0
252 kvm_handler BOOKE_INTERRUPT_FIT, EX_PARAMS(GEN), \
253 SPRN_SRR0, SPRN_SRR1, 0
254 kvm_handler BOOKE_INTERRUPT_WATCHDOG, EX_PARAMS(CRIT),\
255 SPRN_CSRR0, SPRN_CSRR1, 0
257 * Only bolted TLB miss exception handlers are supported for now
259 kvm_handler BOOKE_INTERRUPT_DTLB_MISS, EX_PARAMS_TLB, \
260 SPRN_SRR0, SPRN_SRR1, (NEED_EMU | NEED_DEAR | NEED_ESR)
261 kvm_handler BOOKE_INTERRUPT_ITLB_MISS, EX_PARAMS_TLB, \
262 SPRN_SRR0, SPRN_SRR1, 0
263 kvm_handler BOOKE_INTERRUPT_ALTIVEC_UNAVAIL, EX_PARAMS(GEN), \
264 SPRN_SRR0, SPRN_SRR1, 0
265 kvm_handler BOOKE_INTERRUPT_ALTIVEC_ASSIST, EX_PARAMS(GEN), \
266 SPRN_SRR0, SPRN_SRR1, 0
267 kvm_handler BOOKE_INTERRUPT_PERFORMANCE_MONITOR, EX_PARAMS(GEN), \
268 SPRN_SRR0, SPRN_SRR1, 0
269 kvm_handler BOOKE_INTERRUPT_DOORBELL, EX_PARAMS(GEN), \
270 SPRN_SRR0, SPRN_SRR1, 0
271 kvm_handler BOOKE_INTERRUPT_DOORBELL_CRITICAL, EX_PARAMS(CRIT), \
272 SPRN_CSRR0, SPRN_CSRR1, 0
273 kvm_handler BOOKE_INTERRUPT_HV_PRIV, EX_PARAMS(GEN), \
274 SPRN_SRR0, SPRN_SRR1, NEED_EMU
275 kvm_handler BOOKE_INTERRUPT_HV_SYSCALL, EX_PARAMS(GEN), \
276 SPRN_SRR0, SPRN_SRR1, 0
277 kvm_handler BOOKE_INTERRUPT_GUEST_DBELL, EX_PARAMS(GDBELL), \
278 SPRN_GSRR0, SPRN_GSRR1, 0
279 kvm_handler BOOKE_INTERRUPT_GUEST_DBELL_CRIT, EX_PARAMS(CRIT), \
280 SPRN_CSRR0, SPRN_CSRR1, 0
281 kvm_handler BOOKE_INTERRUPT_DEBUG, EX_PARAMS(DBG), \
282 SPRN_DSRR0, SPRN_DSRR1, 0
283 kvm_handler BOOKE_INTERRUPT_DEBUG, EX_PARAMS(CRIT), \
284 SPRN_CSRR0, SPRN_CSRR1, 0
285 kvm_handler BOOKE_INTERRUPT_LRAT_ERROR, EX_PARAMS(GEN), \
286 SPRN_SRR0, SPRN_SRR1, (NEED_EMU | NEED_DEAR | NEED_ESR)
289 * For input register values, see arch/powerpc/include/asm/kvm_booke_hv_asm.h
291 .macro kvm_handler intno srr0, srr1, flags
292 _GLOBAL(kvmppc_handler_\intno\()_\srr1)
293 PPC_LL r11, THREAD_KVM_VCPU(r10)
294 PPC_STL r3, VCPU_GPR(R3)(r11)
295 mfspr r3, SPRN_SPRG_RSCRATCH0
296 PPC_STL r4, VCPU_GPR(R4)(r11)
297 PPC_LL r4, THREAD_NORMSAVE(0)(r10)
298 PPC_STL r5, VCPU_GPR(R5)(r11)
299 stw r13, VCPU_CR(r11)
301 PPC_STL r3, VCPU_GPR(R10)(r11)
302 PPC_LL r3, THREAD_NORMSAVE(2)(r10)
303 PPC_STL r6, VCPU_GPR(R6)(r11)
304 PPC_STL r4, VCPU_GPR(R11)(r11)
306 PPC_STL r7, VCPU_GPR(R7)(r11)
307 PPC_STL r8, VCPU_GPR(R8)(r11)
308 PPC_STL r9, VCPU_GPR(R9)(r11)
309 PPC_STL r3, VCPU_GPR(R13)(r11)
311 PPC_STL r12, VCPU_GPR(R12)(r11)
312 PPC_STL r7, VCPU_CTR(r11)
314 kvm_handler_common \intno, \srr0, \flags
317 .macro kvm_lvl_handler intno scratch srr0, srr1, flags
318 _GLOBAL(kvmppc_handler_\intno\()_\srr1)
319 mfspr r10, SPRN_SPRG_THREAD
320 PPC_LL r11, THREAD_KVM_VCPU(r10)
321 PPC_STL r3, VCPU_GPR(R3)(r11)
323 PPC_STL r4, VCPU_GPR(R4)(r11)
325 PPC_STL r5, VCPU_GPR(R5)(r11)
328 PPC_STL r3, VCPU_GPR(R8)(r11)
330 PPC_STL r6, VCPU_GPR(R6)(r11)
331 PPC_STL r4, VCPU_GPR(R9)(r11)
334 PPC_STL r7, VCPU_GPR(R7)(r11)
335 PPC_STL r3, VCPU_GPR(R10)(r11)
337 PPC_STL r12, VCPU_GPR(R12)(r11)
338 PPC_STL r13, VCPU_GPR(R13)(r11)
339 PPC_STL r4, VCPU_GPR(R11)(r11)
340 PPC_STL r7, VCPU_CTR(r11)
342 kvm_handler_common \intno, \srr0, \flags
345 kvm_lvl_handler BOOKE_INTERRUPT_CRITICAL, \
346 SPRN_SPRG_RSCRATCH_CRIT, SPRN_CSRR0, SPRN_CSRR1, 0
347 kvm_lvl_handler BOOKE_INTERRUPT_MACHINE_CHECK, \
348 SPRN_SPRG_RSCRATCH_MC, SPRN_MCSRR0, SPRN_MCSRR1, 0
349 kvm_handler BOOKE_INTERRUPT_DATA_STORAGE, \
350 SPRN_SRR0, SPRN_SRR1, (NEED_EMU | NEED_DEAR | NEED_ESR)
351 kvm_handler BOOKE_INTERRUPT_INST_STORAGE, SPRN_SRR0, SPRN_SRR1, NEED_ESR
352 kvm_handler BOOKE_INTERRUPT_EXTERNAL, SPRN_SRR0, SPRN_SRR1, 0
353 kvm_handler BOOKE_INTERRUPT_ALIGNMENT, \
354 SPRN_SRR0, SPRN_SRR1, (NEED_DEAR | NEED_ESR)
355 kvm_handler BOOKE_INTERRUPT_PROGRAM, SPRN_SRR0, SPRN_SRR1, (NEED_ESR | NEED_EMU)
356 kvm_handler BOOKE_INTERRUPT_FP_UNAVAIL, SPRN_SRR0, SPRN_SRR1, 0
357 kvm_handler BOOKE_INTERRUPT_SYSCALL, SPRN_SRR0, SPRN_SRR1, 0
358 kvm_handler BOOKE_INTERRUPT_AP_UNAVAIL, SPRN_SRR0, SPRN_SRR1, 0
359 kvm_handler BOOKE_INTERRUPT_DECREMENTER, SPRN_SRR0, SPRN_SRR1, 0
360 kvm_handler BOOKE_INTERRUPT_FIT, SPRN_SRR0, SPRN_SRR1, 0
361 kvm_lvl_handler BOOKE_INTERRUPT_WATCHDOG, \
362 SPRN_SPRG_RSCRATCH_CRIT, SPRN_CSRR0, SPRN_CSRR1, 0
363 kvm_handler BOOKE_INTERRUPT_DTLB_MISS, \
364 SPRN_SRR0, SPRN_SRR1, (NEED_EMU | NEED_DEAR | NEED_ESR)
365 kvm_handler BOOKE_INTERRUPT_ITLB_MISS, SPRN_SRR0, SPRN_SRR1, 0
366 kvm_handler BOOKE_INTERRUPT_PERFORMANCE_MONITOR, SPRN_SRR0, SPRN_SRR1, 0
367 kvm_handler BOOKE_INTERRUPT_DOORBELL, SPRN_SRR0, SPRN_SRR1, 0
368 kvm_lvl_handler BOOKE_INTERRUPT_DOORBELL_CRITICAL, \
369 SPRN_SPRG_RSCRATCH_CRIT, SPRN_CSRR0, SPRN_CSRR1, 0
370 kvm_handler BOOKE_INTERRUPT_HV_PRIV, SPRN_SRR0, SPRN_SRR1, NEED_EMU
371 kvm_handler BOOKE_INTERRUPT_HV_SYSCALL, SPRN_SRR0, SPRN_SRR1, 0
372 kvm_handler BOOKE_INTERRUPT_GUEST_DBELL, SPRN_GSRR0, SPRN_GSRR1, 0
373 kvm_lvl_handler BOOKE_INTERRUPT_GUEST_DBELL_CRIT, \
374 SPRN_SPRG_RSCRATCH_CRIT, SPRN_CSRR0, SPRN_CSRR1, 0
375 kvm_lvl_handler BOOKE_INTERRUPT_DEBUG, \
376 SPRN_SPRG_RSCRATCH_CRIT, SPRN_CSRR0, SPRN_CSRR1, 0
377 kvm_lvl_handler BOOKE_INTERRUPT_DEBUG, \
378 SPRN_SPRG_RSCRATCH_DBG, SPRN_DSRR0, SPRN_DSRR1, 0
382 * SPRG_SCRATCH0: guest r10
384 * r11: vcpu->arch.shared
385 * r14: KVM exit number
387 _GLOBAL(kvmppc_resume_host)
388 /* Save remaining volatile guest register state to vcpu. */
389 mfspr r3, SPRN_VRSAVE
390 PPC_STL r0, VCPU_GPR(R0)(r4)
393 PPC_STL r5, VCPU_LR(r4)
395 stw r3, VCPU_VRSAVE(r4)
397 PPC_LL r3, PACA_SPRG_VDSO(r13)
400 PPC_STD(r6, VCPU_SHARED_SPRG4, r11)
402 PPC_STD(r7, VCPU_SHARED_SPRG5, r11)
405 mtspr SPRN_SPRG_VDSO_WRITE, r3
407 PPC_STD(r5, VCPU_SPRG9, r4)
408 PPC_STD(r8, VCPU_SHARED_SPRG6, r11)
410 PPC_STD(r9, VCPU_SHARED_SPRG7, r11)
412 /* save guest MAS registers and restore host mas4 & mas6 */
414 PPC_STL r3, VCPU_XER(r4)
416 stw r5, VCPU_SHARED_MAS0(r11)
418 stw r6, VCPU_SHARED_MAS1(r11)
419 PPC_STD(r7, VCPU_SHARED_MAS2, r11)
422 stw r5, VCPU_SHARED_MAS7_3+4(r11)
424 stw r6, VCPU_SHARED_MAS4(r11)
426 lwz r6, VCPU_HOST_MAS4(r4)
427 stw r7, VCPU_SHARED_MAS6(r11)
428 lwz r8, VCPU_HOST_MAS6(r4)
430 stw r5, VCPU_SHARED_MAS7_3+0(r11)
432 /* Enable MAS register updates via exception */
434 rlwinm r3, r3, 0, ~SPRN_EPCR_DMIUH
440 * We enter with interrupts disabled in hardware, but
441 * we need to call RECONCILE_IRQ_STATE to ensure
442 * that the software state is kept in sync.
444 RECONCILE_IRQ_STATE(r3,r5)
447 /* Switch to kernel stack and jump to handler. */
448 PPC_LL r3, HOST_RUN(r1)
449 mr r5, r14 /* intno */
450 mr r14, r4 /* Save vcpu pointer. */
451 bl kvmppc_handle_exit
453 /* Restore vcpu pointer and the nonvolatiles we used. */
455 PPC_LL r14, VCPU_GPR(R14)(r4)
457 andi. r5, r3, RESUME_FLAG_NV
459 PPC_LL r15, VCPU_GPR(R15)(r4)
460 PPC_LL r16, VCPU_GPR(R16)(r4)
461 PPC_LL r17, VCPU_GPR(R17)(r4)
462 PPC_LL r18, VCPU_GPR(R18)(r4)
463 PPC_LL r19, VCPU_GPR(R19)(r4)
464 PPC_LL r20, VCPU_GPR(R20)(r4)
465 PPC_LL r21, VCPU_GPR(R21)(r4)
466 PPC_LL r22, VCPU_GPR(R22)(r4)
467 PPC_LL r23, VCPU_GPR(R23)(r4)
468 PPC_LL r24, VCPU_GPR(R24)(r4)
469 PPC_LL r25, VCPU_GPR(R25)(r4)
470 PPC_LL r26, VCPU_GPR(R26)(r4)
471 PPC_LL r27, VCPU_GPR(R27)(r4)
472 PPC_LL r28, VCPU_GPR(R28)(r4)
473 PPC_LL r29, VCPU_GPR(R29)(r4)
474 PPC_LL r30, VCPU_GPR(R30)(r4)
475 PPC_LL r31, VCPU_GPR(R31)(r4)
477 /* Should we return to the guest? */
478 andi. r5, r3, RESUME_FLAG_HOST
481 srawi r3, r3, 2 /* Shift -ERR back down. */
484 /* Not returning to guest. */
485 PPC_LL r5, HOST_STACK_LR(r1)
489 * We already saved guest volatile register state; now save the
493 PPC_STL r15, VCPU_GPR(R15)(r4)
494 PPC_STL r16, VCPU_GPR(R16)(r4)
495 PPC_STL r17, VCPU_GPR(R17)(r4)
496 PPC_STL r18, VCPU_GPR(R18)(r4)
497 PPC_STL r19, VCPU_GPR(R19)(r4)
498 PPC_STL r20, VCPU_GPR(R20)(r4)
499 PPC_STL r21, VCPU_GPR(R21)(r4)
500 PPC_STL r22, VCPU_GPR(R22)(r4)
501 PPC_STL r23, VCPU_GPR(R23)(r4)
502 PPC_STL r24, VCPU_GPR(R24)(r4)
503 PPC_STL r25, VCPU_GPR(R25)(r4)
504 PPC_STL r26, VCPU_GPR(R26)(r4)
505 PPC_STL r27, VCPU_GPR(R27)(r4)
506 PPC_STL r28, VCPU_GPR(R28)(r4)
507 PPC_STL r29, VCPU_GPR(R29)(r4)
508 PPC_STL r30, VCPU_GPR(R30)(r4)
509 PPC_STL r31, VCPU_GPR(R31)(r4)
511 /* Load host non-volatile register state from host stack. */
512 PPC_LL r14, HOST_NV_GPR(R14)(r1)
513 PPC_LL r15, HOST_NV_GPR(R15)(r1)
514 PPC_LL r16, HOST_NV_GPR(R16)(r1)
515 PPC_LL r17, HOST_NV_GPR(R17)(r1)
516 PPC_LL r18, HOST_NV_GPR(R18)(r1)
517 PPC_LL r19, HOST_NV_GPR(R19)(r1)
518 PPC_LL r20, HOST_NV_GPR(R20)(r1)
519 PPC_LL r21, HOST_NV_GPR(R21)(r1)
520 PPC_LL r22, HOST_NV_GPR(R22)(r1)
521 PPC_LL r23, HOST_NV_GPR(R23)(r1)
522 PPC_LL r24, HOST_NV_GPR(R24)(r1)
523 PPC_LL r25, HOST_NV_GPR(R25)(r1)
524 PPC_LL r26, HOST_NV_GPR(R26)(r1)
525 PPC_LL r27, HOST_NV_GPR(R27)(r1)
526 PPC_LL r28, HOST_NV_GPR(R28)(r1)
527 PPC_LL r29, HOST_NV_GPR(R29)(r1)
528 PPC_LL r30, HOST_NV_GPR(R30)(r1)
529 PPC_LL r31, HOST_NV_GPR(R31)(r1)
531 /* Return to kvm_vcpu_run(). */
534 addi r1, r1, HOST_STACK_SIZE
535 /* r3 still contains the return code from kvmppc_handle_exit(). */
539 * r3: kvm_run pointer
542 _GLOBAL(__kvmppc_vcpu_run)
543 stwu r1, -HOST_STACK_SIZE(r1)
544 PPC_STL r1, VCPU_HOST_STACK(r4) /* Save stack pointer to vcpu. */
546 /* Save host state to stack. */
547 PPC_STL r3, HOST_RUN(r1)
550 PPC_STL r3, HOST_STACK_LR(r1)
554 /* Save host non-volatile register state to stack. */
555 PPC_STL r14, HOST_NV_GPR(R14)(r1)
556 PPC_STL r15, HOST_NV_GPR(R15)(r1)
557 PPC_STL r16, HOST_NV_GPR(R16)(r1)
558 PPC_STL r17, HOST_NV_GPR(R17)(r1)
559 PPC_STL r18, HOST_NV_GPR(R18)(r1)
560 PPC_STL r19, HOST_NV_GPR(R19)(r1)
561 PPC_STL r20, HOST_NV_GPR(R20)(r1)
562 PPC_STL r21, HOST_NV_GPR(R21)(r1)
563 PPC_STL r22, HOST_NV_GPR(R22)(r1)
564 PPC_STL r23, HOST_NV_GPR(R23)(r1)
565 PPC_STL r24, HOST_NV_GPR(R24)(r1)
566 PPC_STL r25, HOST_NV_GPR(R25)(r1)
567 PPC_STL r26, HOST_NV_GPR(R26)(r1)
568 PPC_STL r27, HOST_NV_GPR(R27)(r1)
569 PPC_STL r28, HOST_NV_GPR(R28)(r1)
570 PPC_STL r29, HOST_NV_GPR(R29)(r1)
571 PPC_STL r30, HOST_NV_GPR(R30)(r1)
572 PPC_STL r31, HOST_NV_GPR(R31)(r1)
574 /* Load guest non-volatiles. */
575 PPC_LL r14, VCPU_GPR(R14)(r4)
576 PPC_LL r15, VCPU_GPR(R15)(r4)
577 PPC_LL r16, VCPU_GPR(R16)(r4)
578 PPC_LL r17, VCPU_GPR(R17)(r4)
579 PPC_LL r18, VCPU_GPR(R18)(r4)
580 PPC_LL r19, VCPU_GPR(R19)(r4)
581 PPC_LL r20, VCPU_GPR(R20)(r4)
582 PPC_LL r21, VCPU_GPR(R21)(r4)
583 PPC_LL r22, VCPU_GPR(R22)(r4)
584 PPC_LL r23, VCPU_GPR(R23)(r4)
585 PPC_LL r24, VCPU_GPR(R24)(r4)
586 PPC_LL r25, VCPU_GPR(R25)(r4)
587 PPC_LL r26, VCPU_GPR(R26)(r4)
588 PPC_LL r27, VCPU_GPR(R27)(r4)
589 PPC_LL r28, VCPU_GPR(R28)(r4)
590 PPC_LL r29, VCPU_GPR(R29)(r4)
591 PPC_LL r30, VCPU_GPR(R30)(r4)
592 PPC_LL r31, VCPU_GPR(R31)(r4)
596 PPC_STL r2, HOST_R2(r1)
599 stw r3, VCPU_HOST_PID(r4)
600 lwz r3, VCPU_GUEST_PID(r4)
603 PPC_LL r11, VCPU_SHARED(r4)
604 /* Disable MAS register updates via exception */
606 oris r3, r3, SPRN_EPCR_DMIUH@h
609 /* Save host mas4 and mas6 and load guest MAS registers */
611 stw r3, VCPU_HOST_MAS4(r4)
613 stw r3, VCPU_HOST_MAS6(r4)
614 lwz r3, VCPU_SHARED_MAS0(r11)
615 lwz r5, VCPU_SHARED_MAS1(r11)
616 PPC_LD(r6, VCPU_SHARED_MAS2, r11)
617 lwz r7, VCPU_SHARED_MAS7_3+4(r11)
618 lwz r8, VCPU_SHARED_MAS4(r11)
624 lwz r3, VCPU_SHARED_MAS6(r11)
625 lwz r5, VCPU_SHARED_MAS7_3+0(r11)
630 * Host interrupt handlers may have clobbered these guest-readable
631 * SPRGs, so we need to reload them here with the guest's values.
633 lwz r3, VCPU_VRSAVE(r4)
634 PPC_LD(r5, VCPU_SHARED_SPRG4, r11)
635 mtspr SPRN_VRSAVE, r3
636 PPC_LD(r6, VCPU_SHARED_SPRG5, r11)
637 mtspr SPRN_SPRG4W, r5
638 PPC_LD(r7, VCPU_SHARED_SPRG6, r11)
639 mtspr SPRN_SPRG5W, r6
640 PPC_LD(r8, VCPU_SHARED_SPRG7, r11)
641 mtspr SPRN_SPRG6W, r7
642 PPC_LD(r5, VCPU_SPRG9, r4)
643 mtspr SPRN_SPRG7W, r8
646 /* Load some guest volatiles. */
647 PPC_LL r3, VCPU_LR(r4)
648 PPC_LL r5, VCPU_XER(r4)
649 PPC_LL r6, VCPU_CTR(r4)
651 PPC_LL r8, VCPU_PC(r4)
652 PPC_LD(r9, VCPU_SHARED_MSR, r11)
653 PPC_LL r0, VCPU_GPR(R0)(r4)
654 PPC_LL r1, VCPU_GPR(R1)(r4)
655 PPC_LL r2, VCPU_GPR(R2)(r4)
656 PPC_LL r10, VCPU_GPR(R10)(r4)
657 PPC_LL r11, VCPU_GPR(R11)(r4)
658 PPC_LL r12, VCPU_GPR(R12)(r4)
659 PPC_LL r13, VCPU_GPR(R13)(r4)
666 #ifdef CONFIG_KVM_EXIT_TIMING
667 /* save enter time */
673 stw r9, VCPU_TIMING_LAST_ENTER_TBL(r4)
675 stw r8, VCPU_TIMING_LAST_ENTER_TBU(r4)
679 * Don't execute any instruction which can change CR after
684 /* Finish loading guest volatiles and jump to guest. */
685 PPC_LL r5, VCPU_GPR(R5)(r4)
686 PPC_LL r6, VCPU_GPR(R6)(r4)
687 PPC_LL r7, VCPU_GPR(R7)(r4)
688 PPC_LL r8, VCPU_GPR(R8)(r4)
689 PPC_LL r9, VCPU_GPR(R9)(r4)
691 PPC_LL r3, VCPU_GPR(R3)(r4)
692 PPC_LL r4, VCPU_GPR(R4)(r4)