1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2012,2013 - ARM Ltd
4 * Author: Marc Zyngier <marc.zyngier@arm.com>
5 *
6 * Derived from arch/arm/kvm/handle_exit.c:
7 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
8 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
9 */
10
11 #include <linux/kvm.h>
12 #include <linux/kvm_host.h>
13 #include <linux/ubsan.h>
14
15 #include <asm/esr.h>
16 #include <asm/exception.h>
17 #include <asm/kvm_asm.h>
18 #include <asm/kvm_emulate.h>
19 #include <asm/kvm_mmu.h>
20 #include <asm/kvm_nested.h>
21 #include <asm/debug-monitors.h>
22 #include <asm/stacktrace/nvhe.h>
23 #include <asm/traps.h>
24
25 #include <kvm/arm_hypercalls.h>
26
27 #define CREATE_TRACE_POINTS
28 #include "trace_handle_exit.h"
29
30 typedef int (*exit_handle_fn)(struct kvm_vcpu *);
31
kvm_handle_guest_serror(struct kvm_vcpu * vcpu,u64 esr)32 static void kvm_handle_guest_serror(struct kvm_vcpu *vcpu, u64 esr)
33 {
34 if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(NULL, esr))
35 kvm_inject_vabt(vcpu);
36 }
37
handle_hvc(struct kvm_vcpu * vcpu)38 static int handle_hvc(struct kvm_vcpu *vcpu)
39 {
40 trace_kvm_hvc_arm64(*vcpu_pc(vcpu), vcpu_get_reg(vcpu, 0),
41 kvm_vcpu_hvc_get_imm(vcpu));
42 vcpu->stat.hvc_exit_stat++;
43
44 /* Forward hvc instructions to the virtual EL2 if the guest has EL2. */
45 if (vcpu_has_nv(vcpu)) {
46 if (vcpu_read_sys_reg(vcpu, HCR_EL2) & HCR_HCD)
47 kvm_inject_undefined(vcpu);
48 else
49 kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
50
51 return 1;
52 }
53
54 return kvm_smccc_call_handler(vcpu);
55 }
56
handle_smc(struct kvm_vcpu * vcpu)57 static int handle_smc(struct kvm_vcpu *vcpu)
58 {
59 /*
60 * Forward this trapped smc instruction to the virtual EL2 if
61 * the guest has asked for it.
62 */
63 if (forward_smc_trap(vcpu))
64 return 1;
65
66 /*
67 * "If an SMC instruction executed at Non-secure EL1 is
68 * trapped to EL2 because HCR_EL2.TSC is 1, the exception is a
69 * Trap exception, not a Secure Monitor Call exception [...]"
70 *
71 * We need to advance the PC after the trap, as it would
72 * otherwise return to the same address. Furthermore, pre-incrementing
73 * the PC before potentially exiting to userspace maintains the same
74 * abstraction for both SMCs and HVCs.
75 */
76 kvm_incr_pc(vcpu);
77
78 /*
79 * SMCs with a nonzero immediate are reserved according to DEN0028E 2.9
80 * "SMC and HVC immediate value".
81 */
82 if (kvm_vcpu_hvc_get_imm(vcpu)) {
83 vcpu_set_reg(vcpu, 0, ~0UL);
84 return 1;
85 }
86
87 /*
88 * If imm is zero then it is likely an SMCCC call.
89 *
90 * Note that on ARMv8.3, even if EL3 is not implemented, SMC executed
91 * at Non-secure EL1 is trapped to EL2 if HCR_EL2.TSC==1, rather than
92 * being treated as UNDEFINED.
93 */
94 return kvm_smccc_call_handler(vcpu);
95 }
96
97 /*
98 * This handles the cases where the system does not support FP/ASIMD or when
99 * we are running nested virtualization and the guest hypervisor is trapping
100 * FP/ASIMD accesses by its guest guest.
101 *
102 * All other handling of guest vs. host FP/ASIMD register state is handled in
103 * fixup_guest_exit().
104 */
kvm_handle_fpasimd(struct kvm_vcpu * vcpu)105 static int kvm_handle_fpasimd(struct kvm_vcpu *vcpu)
106 {
107 if (guest_hyp_fpsimd_traps_enabled(vcpu))
108 return kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
109
110 /* This is the case when the system doesn't support FP/ASIMD. */
111 kvm_inject_undefined(vcpu);
112 return 1;
113 }
114
115 /**
116 * kvm_handle_wfx - handle a wait-for-interrupts or wait-for-event
117 * instruction executed by a guest
118 *
119 * @vcpu: the vcpu pointer
120 *
121 * WFE[T]: Yield the CPU and come back to this vcpu when the scheduler
122 * decides to.
123 * WFI: Simply call kvm_vcpu_halt(), which will halt execution of
124 * world-switches and schedule other host processes until there is an
125 * incoming IRQ or FIQ to the VM.
126 * WFIT: Same as WFI, with a timed wakeup implemented as a background timer
127 *
128 * WF{I,E}T can immediately return if the deadline has already expired.
129 */
kvm_handle_wfx(struct kvm_vcpu * vcpu)130 static int kvm_handle_wfx(struct kvm_vcpu *vcpu)
131 {
132 u64 esr = kvm_vcpu_get_esr(vcpu);
133 bool is_wfe = !!(esr & ESR_ELx_WFx_ISS_WFE);
134
135 if (guest_hyp_wfx_traps_enabled(vcpu))
136 return kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
137
138 if (is_wfe) {
139 trace_kvm_wfx_arm64(*vcpu_pc(vcpu), true);
140 vcpu->stat.wfe_exit_stat++;
141 } else {
142 trace_kvm_wfx_arm64(*vcpu_pc(vcpu), false);
143 vcpu->stat.wfi_exit_stat++;
144 }
145
146 if (esr & ESR_ELx_WFx_ISS_WFxT) {
147 if (esr & ESR_ELx_WFx_ISS_RV) {
148 u64 val, now;
149
150 now = kvm_arm_timer_get_reg(vcpu, KVM_REG_ARM_TIMER_CNT);
151 val = vcpu_get_reg(vcpu, kvm_vcpu_sys_get_rt(vcpu));
152
153 if (now >= val)
154 goto out;
155 } else {
156 /* Treat WFxT as WFx if RN is invalid */
157 esr &= ~ESR_ELx_WFx_ISS_WFxT;
158 }
159 }
160
161 if (esr & ESR_ELx_WFx_ISS_WFE) {
162 kvm_vcpu_on_spin(vcpu, vcpu_mode_priv(vcpu));
163 } else {
164 if (esr & ESR_ELx_WFx_ISS_WFxT)
165 vcpu_set_flag(vcpu, IN_WFIT);
166
167 kvm_vcpu_wfi(vcpu);
168 }
169 out:
170 kvm_incr_pc(vcpu);
171
172 return 1;
173 }
174
175 /**
176 * kvm_handle_guest_debug - handle a debug exception instruction
177 *
178 * @vcpu: the vcpu pointer
179 *
180 * We route all debug exceptions through the same handler. If both the
181 * guest and host are using the same debug facilities it will be up to
182 * userspace to re-inject the correct exception for guest delivery.
183 *
184 * @return: 0 (while setting vcpu->run->exit_reason)
185 */
kvm_handle_guest_debug(struct kvm_vcpu * vcpu)186 static int kvm_handle_guest_debug(struct kvm_vcpu *vcpu)
187 {
188 struct kvm_run *run = vcpu->run;
189 u64 esr = kvm_vcpu_get_esr(vcpu);
190
191 if (!vcpu->guest_debug && forward_debug_exception(vcpu))
192 return 1;
193
194 run->exit_reason = KVM_EXIT_DEBUG;
195 run->debug.arch.hsr = lower_32_bits(esr);
196 run->debug.arch.hsr_high = upper_32_bits(esr);
197 run->flags = KVM_DEBUG_ARCH_HSR_HIGH_VALID;
198
199 switch (ESR_ELx_EC(esr)) {
200 case ESR_ELx_EC_WATCHPT_LOW:
201 run->debug.arch.far = vcpu->arch.fault.far_el2;
202 break;
203 case ESR_ELx_EC_SOFTSTP_LOW:
204 *vcpu_cpsr(vcpu) |= DBG_SPSR_SS;
205 break;
206 }
207
208 return 0;
209 }
210
kvm_handle_unknown_ec(struct kvm_vcpu * vcpu)211 static int kvm_handle_unknown_ec(struct kvm_vcpu *vcpu)
212 {
213 u64 esr = kvm_vcpu_get_esr(vcpu);
214
215 kvm_pr_unimpl("Unknown exception class: esr: %#016llx -- %s\n",
216 esr, esr_get_class_string(esr));
217
218 kvm_inject_undefined(vcpu);
219 return 1;
220 }
221
222 /*
223 * Guest access to SVE registers should be routed to this handler only
224 * when the system doesn't support SVE.
225 */
handle_sve(struct kvm_vcpu * vcpu)226 static int handle_sve(struct kvm_vcpu *vcpu)
227 {
228 if (guest_hyp_sve_traps_enabled(vcpu))
229 return kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
230
231 kvm_inject_undefined(vcpu);
232 return 1;
233 }
234
235 /*
236 * Two possibilities to handle a trapping ptrauth instruction:
237 *
238 * - Guest usage of a ptrauth instruction (which the guest EL1 did not
239 * turn into a NOP). If we get here, it is because we didn't enable
240 * ptrauth for the guest. This results in an UNDEF, as it isn't
241 * supposed to use ptrauth without being told it could.
242 *
243 * - Running an L2 NV guest while L1 has left HCR_EL2.API==0, and for
244 * which we reinject the exception into L1.
245 *
246 * Anything else is an emulation bug (hence the WARN_ON + UNDEF).
247 */
kvm_handle_ptrauth(struct kvm_vcpu * vcpu)248 static int kvm_handle_ptrauth(struct kvm_vcpu *vcpu)
249 {
250 if (!vcpu_has_ptrauth(vcpu)) {
251 kvm_inject_undefined(vcpu);
252 return 1;
253 }
254
255 if (vcpu_has_nv(vcpu) && !is_hyp_ctxt(vcpu)) {
256 kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
257 return 1;
258 }
259
260 /* Really shouldn't be here! */
261 WARN_ON_ONCE(1);
262 kvm_inject_undefined(vcpu);
263 return 1;
264 }
265
kvm_handle_eret(struct kvm_vcpu * vcpu)266 static int kvm_handle_eret(struct kvm_vcpu *vcpu)
267 {
268 if (esr_iss_is_eretax(kvm_vcpu_get_esr(vcpu)) &&
269 !vcpu_has_ptrauth(vcpu))
270 return kvm_handle_ptrauth(vcpu);
271
272 /*
273 * If we got here, two possibilities:
274 *
275 * - the guest is in EL2, and we need to fully emulate ERET
276 *
277 * - the guest is in EL1, and we need to reinject the
278 * exception into the L1 hypervisor.
279 *
280 * If KVM ever traps ERET for its own use, we'll have to
281 * revisit this.
282 */
283 if (is_hyp_ctxt(vcpu))
284 kvm_emulate_nested_eret(vcpu);
285 else
286 kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
287
288 return 1;
289 }
290
handle_svc(struct kvm_vcpu * vcpu)291 static int handle_svc(struct kvm_vcpu *vcpu)
292 {
293 /*
294 * So far, SVC traps only for NV via HFGITR_EL2. A SVC from a
295 * 32bit guest would be caught by vpcu_mode_is_bad_32bit(), so
296 * we should only have to deal with a 64 bit exception.
297 */
298 kvm_inject_nested_sync(vcpu, kvm_vcpu_get_esr(vcpu));
299 return 1;
300 }
301
kvm_handle_gcs(struct kvm_vcpu * vcpu)302 static int kvm_handle_gcs(struct kvm_vcpu *vcpu)
303 {
304 /* We don't expect GCS, so treat it with contempt */
305 if (kvm_has_feat(vcpu->kvm, ID_AA64PFR1_EL1, GCS, IMP))
306 WARN_ON_ONCE(1);
307
308 kvm_inject_undefined(vcpu);
309 return 1;
310 }
311
handle_other(struct kvm_vcpu * vcpu)312 static int handle_other(struct kvm_vcpu *vcpu)
313 {
314 bool is_l2 = vcpu_has_nv(vcpu) && !is_hyp_ctxt(vcpu);
315 u64 hcrx = __vcpu_sys_reg(vcpu, HCRX_EL2);
316 u64 esr = kvm_vcpu_get_esr(vcpu);
317 u64 iss = ESR_ELx_ISS(esr);
318 struct kvm *kvm = vcpu->kvm;
319 bool allowed, fwd = false;
320
321 /*
322 * We only trap for two reasons:
323 *
324 * - the feature is disabled, and the only outcome is to
325 * generate an UNDEF.
326 *
327 * - the feature is enabled, but a NV guest wants to trap the
328 * feature used by its L2 guest. We forward the exception in
329 * this case.
330 *
331 * What we don't expect is to end-up here if the guest is
332 * expected be be able to directly use the feature, hence the
333 * WARN_ON below.
334 */
335 switch (iss) {
336 case ESR_ELx_ISS_OTHER_ST64BV:
337 allowed = kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_V);
338 if (is_l2)
339 fwd = !(hcrx & HCRX_EL2_EnASR);
340 break;
341 case ESR_ELx_ISS_OTHER_ST64BV0:
342 allowed = kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64_ACCDATA);
343 if (is_l2)
344 fwd = !(hcrx & HCRX_EL2_EnAS0);
345 break;
346 case ESR_ELx_ISS_OTHER_LDST64B:
347 allowed = kvm_has_feat(kvm, ID_AA64ISAR1_EL1, LS64, LS64);
348 if (is_l2)
349 fwd = !(hcrx & HCRX_EL2_EnALS);
350 break;
351 case ESR_ELx_ISS_OTHER_TSBCSYNC:
352 allowed = kvm_has_feat(kvm, ID_AA64DFR0_EL1, TraceBuffer, TRBE_V1P1);
353 if (is_l2)
354 fwd = (__vcpu_sys_reg(vcpu, HFGITR2_EL2) & HFGITR2_EL2_TSBCSYNC);
355 break;
356 case ESR_ELx_ISS_OTHER_PSBCSYNC:
357 allowed = kvm_has_feat(kvm, ID_AA64DFR0_EL1, PMSVer, V1P5);
358 if (is_l2)
359 fwd = (__vcpu_sys_reg(vcpu, HFGITR_EL2) & HFGITR_EL2_PSBCSYNC);
360 break;
361 default:
362 /* Clearly, we're missing something. */
363 WARN_ON_ONCE(1);
364 allowed = false;
365 }
366
367 WARN_ON_ONCE(allowed && !fwd);
368
369 if (allowed && fwd)
370 kvm_inject_nested_sync(vcpu, esr);
371 else
372 kvm_inject_undefined(vcpu);
373
374 return 1;
375 }
376
377 static exit_handle_fn arm_exit_handlers[] = {
378 [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
379 [ESR_ELx_EC_WFx] = kvm_handle_wfx,
380 [ESR_ELx_EC_CP15_32] = kvm_handle_cp15_32,
381 [ESR_ELx_EC_CP15_64] = kvm_handle_cp15_64,
382 [ESR_ELx_EC_CP14_MR] = kvm_handle_cp14_32,
383 [ESR_ELx_EC_CP14_LS] = kvm_handle_cp14_load_store,
384 [ESR_ELx_EC_CP10_ID] = kvm_handle_cp10_id,
385 [ESR_ELx_EC_CP14_64] = kvm_handle_cp14_64,
386 [ESR_ELx_EC_OTHER] = handle_other,
387 [ESR_ELx_EC_HVC32] = handle_hvc,
388 [ESR_ELx_EC_SMC32] = handle_smc,
389 [ESR_ELx_EC_HVC64] = handle_hvc,
390 [ESR_ELx_EC_SMC64] = handle_smc,
391 [ESR_ELx_EC_SVC64] = handle_svc,
392 [ESR_ELx_EC_SYS64] = kvm_handle_sys_reg,
393 [ESR_ELx_EC_SVE] = handle_sve,
394 [ESR_ELx_EC_ERET] = kvm_handle_eret,
395 [ESR_ELx_EC_IABT_LOW] = kvm_handle_guest_abort,
396 [ESR_ELx_EC_DABT_LOW] = kvm_handle_guest_abort,
397 [ESR_ELx_EC_DABT_CUR] = kvm_handle_vncr_abort,
398 [ESR_ELx_EC_SOFTSTP_LOW]= kvm_handle_guest_debug,
399 [ESR_ELx_EC_WATCHPT_LOW]= kvm_handle_guest_debug,
400 [ESR_ELx_EC_BREAKPT_LOW]= kvm_handle_guest_debug,
401 [ESR_ELx_EC_BKPT32] = kvm_handle_guest_debug,
402 [ESR_ELx_EC_BRK64] = kvm_handle_guest_debug,
403 [ESR_ELx_EC_FP_ASIMD] = kvm_handle_fpasimd,
404 [ESR_ELx_EC_PAC] = kvm_handle_ptrauth,
405 [ESR_ELx_EC_GCS] = kvm_handle_gcs,
406 };
407
kvm_get_exit_handler(struct kvm_vcpu * vcpu)408 static exit_handle_fn kvm_get_exit_handler(struct kvm_vcpu *vcpu)
409 {
410 u64 esr = kvm_vcpu_get_esr(vcpu);
411 u8 esr_ec = ESR_ELx_EC(esr);
412
413 return arm_exit_handlers[esr_ec];
414 }
415
416 /*
417 * We may be single-stepping an emulated instruction. If the emulation
418 * has been completed in the kernel, we can return to userspace with a
419 * KVM_EXIT_DEBUG, otherwise userspace needs to complete its
420 * emulation first.
421 */
handle_trap_exceptions(struct kvm_vcpu * vcpu)422 static int handle_trap_exceptions(struct kvm_vcpu *vcpu)
423 {
424 int handled;
425
426 /*
427 * See ARM ARM B1.14.1: "Hyp traps on instructions
428 * that fail their condition code check"
429 */
430 if (!kvm_condition_valid(vcpu)) {
431 kvm_incr_pc(vcpu);
432 handled = 1;
433 } else {
434 exit_handle_fn exit_handler;
435
436 exit_handler = kvm_get_exit_handler(vcpu);
437 handled = exit_handler(vcpu);
438 }
439
440 return handled;
441 }
442
443 /*
444 * Return > 0 to return to guest, < 0 on error, 0 (and set exit_reason) on
445 * proper exit to userspace.
446 */
handle_exit(struct kvm_vcpu * vcpu,int exception_index)447 int handle_exit(struct kvm_vcpu *vcpu, int exception_index)
448 {
449 struct kvm_run *run = vcpu->run;
450
451 if (ARM_SERROR_PENDING(exception_index)) {
452 /*
453 * The SError is handled by handle_exit_early(). If the guest
454 * survives it will re-execute the original instruction.
455 */
456 return 1;
457 }
458
459 exception_index = ARM_EXCEPTION_CODE(exception_index);
460
461 switch (exception_index) {
462 case ARM_EXCEPTION_IRQ:
463 return 1;
464 case ARM_EXCEPTION_EL1_SERROR:
465 return 1;
466 case ARM_EXCEPTION_TRAP:
467 return handle_trap_exceptions(vcpu);
468 case ARM_EXCEPTION_HYP_GONE:
469 /*
470 * EL2 has been reset to the hyp-stub. This happens when a guest
471 * is pre-emptied by kvm_reboot()'s shutdown call.
472 */
473 run->exit_reason = KVM_EXIT_FAIL_ENTRY;
474 return 0;
475 case ARM_EXCEPTION_IL:
476 /*
477 * We attempted an illegal exception return. Guest state must
478 * have been corrupted somehow. Give up.
479 */
480 run->exit_reason = KVM_EXIT_FAIL_ENTRY;
481 return -EINVAL;
482 default:
483 kvm_pr_unimpl("Unsupported exception type: %d",
484 exception_index);
485 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
486 return 0;
487 }
488 }
489
490 /* For exit types that need handling before we can be preempted */
handle_exit_early(struct kvm_vcpu * vcpu,int exception_index)491 void handle_exit_early(struct kvm_vcpu *vcpu, int exception_index)
492 {
493 if (ARM_SERROR_PENDING(exception_index)) {
494 if (this_cpu_has_cap(ARM64_HAS_RAS_EXTN)) {
495 u64 disr = kvm_vcpu_get_disr(vcpu);
496
497 kvm_handle_guest_serror(vcpu, disr_to_esr(disr));
498 } else {
499 kvm_inject_vabt(vcpu);
500 }
501
502 return;
503 }
504
505 exception_index = ARM_EXCEPTION_CODE(exception_index);
506
507 if (exception_index == ARM_EXCEPTION_EL1_SERROR)
508 kvm_handle_guest_serror(vcpu, kvm_vcpu_get_esr(vcpu));
509 }
510
print_nvhe_hyp_panic(const char * name,u64 panic_addr)511 static void print_nvhe_hyp_panic(const char *name, u64 panic_addr)
512 {
513 kvm_err("nVHE hyp %s at: [<%016llx>] %pB!\n", name, panic_addr,
514 (void *)(panic_addr + kaslr_offset()));
515 }
516
kvm_nvhe_report_cfi_failure(u64 panic_addr)517 static void kvm_nvhe_report_cfi_failure(u64 panic_addr)
518 {
519 print_nvhe_hyp_panic("CFI failure", panic_addr);
520
521 if (IS_ENABLED(CONFIG_CFI_PERMISSIVE))
522 kvm_err(" (CONFIG_CFI_PERMISSIVE ignored for hyp failures)\n");
523 }
524
nvhe_hyp_panic_handler(u64 esr,u64 spsr,u64 elr_virt,u64 elr_phys,u64 par,uintptr_t vcpu,u64 far,u64 hpfar)525 void __noreturn __cold nvhe_hyp_panic_handler(u64 esr, u64 spsr,
526 u64 elr_virt, u64 elr_phys,
527 u64 par, uintptr_t vcpu,
528 u64 far, u64 hpfar) {
529 u64 elr_in_kimg = __phys_to_kimg(elr_phys);
530 u64 hyp_offset = elr_in_kimg - kaslr_offset() - elr_virt;
531 u64 mode = spsr & PSR_MODE_MASK;
532 u64 panic_addr = elr_virt + hyp_offset;
533
534 if (mode != PSR_MODE_EL2t && mode != PSR_MODE_EL2h) {
535 kvm_err("Invalid host exception to nVHE hyp!\n");
536 } else if (ESR_ELx_EC(esr) == ESR_ELx_EC_BRK64 &&
537 esr_brk_comment(esr) == BUG_BRK_IMM) {
538 const char *file = NULL;
539 unsigned int line = 0;
540
541 /* All hyp bugs, including warnings, are treated as fatal. */
542 if (!is_protected_kvm_enabled() ||
543 IS_ENABLED(CONFIG_NVHE_EL2_DEBUG)) {
544 struct bug_entry *bug = find_bug(elr_in_kimg);
545
546 if (bug)
547 bug_get_file_line(bug, &file, &line);
548 }
549
550 if (file)
551 kvm_err("nVHE hyp BUG at: %s:%u!\n", file, line);
552 else
553 print_nvhe_hyp_panic("BUG", panic_addr);
554 } else if (IS_ENABLED(CONFIG_CFI_CLANG) && esr_is_cfi_brk(esr)) {
555 kvm_nvhe_report_cfi_failure(panic_addr);
556 } else if (IS_ENABLED(CONFIG_UBSAN_KVM_EL2) &&
557 ESR_ELx_EC(esr) == ESR_ELx_EC_BRK64 &&
558 esr_is_ubsan_brk(esr)) {
559 print_nvhe_hyp_panic(report_ubsan_failure(esr & UBSAN_BRK_MASK),
560 panic_addr);
561 } else {
562 print_nvhe_hyp_panic("panic", panic_addr);
563 }
564
565 /* Dump the nVHE hypervisor backtrace */
566 kvm_nvhe_dump_backtrace(hyp_offset);
567
568 /*
569 * Hyp has panicked and we're going to handle that by panicking the
570 * kernel. The kernel offset will be revealed in the panic so we're
571 * also safe to reveal the hyp offset as a debugging aid for translating
572 * hyp VAs to vmlinux addresses.
573 */
574 kvm_err("Hyp Offset: 0x%llx\n", hyp_offset);
575
576 panic("HYP panic:\nPS:%08llx PC:%016llx ESR:%016llx\nFAR:%016llx HPFAR:%016llx PAR:%016llx\nVCPU:%016lx\n",
577 spsr, elr_virt, esr, far, hpfar, par, vcpu);
578 }
579