Commit | Line | Data |
---|---|---|
4f8d6632 MZ |
1 | /* |
2 | * Copyright (C) 2012,2013 - ARM Ltd | |
3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
4 | * | |
5 | * Derived from arch/arm/include/asm/kvm_host.h: | |
6 | * Copyright (C) 2012 - Virtual Open Systems and Columbia University | |
7 | * Author: Christoffer Dall <c.dall@virtualopensystems.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #ifndef __ARM64_KVM_HOST_H__ | |
23 | #define __ARM64_KVM_HOST_H__ | |
24 | ||
65647300 PB |
25 | #include <linux/types.h> |
26 | #include <linux/kvm_types.h> | |
63a1e1c9 | 27 | #include <asm/cpufeature.h> |
4f5abad9 | 28 | #include <asm/daifflags.h> |
17eed27b | 29 | #include <asm/fpsimd.h> |
4f8d6632 | 30 | #include <asm/kvm.h> |
3a3604bc | 31 | #include <asm/kvm_asm.h> |
4f8d6632 | 32 | #include <asm/kvm_mmio.h> |
e6b673b7 | 33 | #include <asm/thread_info.h> |
4f8d6632 | 34 | |
c1426e4c EA |
35 | #define __KVM_HAVE_ARCH_INTC_INITIALIZED |
36 | ||
955a3fc6 | 37 | #define KVM_USER_MEM_SLOTS 512 |
920552b2 | 38 | #define KVM_HALT_POLL_NS_DEFAULT 500000 |
4f8d6632 MZ |
39 | |
40 | #include <kvm/arm_vgic.h> | |
41 | #include <kvm/arm_arch_timer.h> | |
04fe4726 | 42 | #include <kvm/arm_pmu.h> |
4f8d6632 | 43 | |
ef748917 ML |
44 | #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS |
45 | ||
808e7381 | 46 | #define KVM_VCPU_MAX_FEATURES 4 |
4f8d6632 | 47 | |
7b244e2b | 48 | #define KVM_REQ_SLEEP \ |
2387149e | 49 | KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) |
325f9c64 | 50 | #define KVM_REQ_IRQ_PENDING KVM_ARCH_REQ(1) |
b13216cf | 51 | |
61bbe380 CD |
52 | DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use); |
53 | ||
6951e48b | 54 | int __attribute_const__ kvm_target_cpu(void); |
4f8d6632 | 55 | int kvm_reset_vcpu(struct kvm_vcpu *vcpu); |
b46f01ce | 56 | int kvm_arch_dev_ioctl_check_extension(struct kvm *kvm, long ext); |
c612505f | 57 | void __extended_idmap_trampoline(phys_addr_t boot_pgd, phys_addr_t idmap_start); |
4f8d6632 MZ |
58 | |
59 | struct kvm_arch { | |
60 | /* The VMID generation used for the virt. memory system */ | |
61 | u64 vmid_gen; | |
62 | u32 vmid; | |
63 | ||
64 | /* 1-level 2nd stage table and lock */ | |
65 | spinlock_t pgd_lock; | |
66 | pgd_t *pgd; | |
67 | ||
68 | /* VTTBR value associated with above pgd and vmid */ | |
69 | u64 vttbr; | |
70 | ||
94d0e598 MZ |
71 | /* The last vcpu id that ran on each physical CPU */ |
72 | int __percpu *last_vcpu_ran; | |
73 | ||
3caa2d8c AP |
74 | /* The maximum number of vCPUs depends on the used GIC model */ |
75 | int max_vcpus; | |
76 | ||
4f8d6632 MZ |
77 | /* Interrupt controller */ |
78 | struct vgic_dist vgic; | |
85bd0ba1 MZ |
79 | |
80 | /* Mandated version of PSCI */ | |
81 | u32 psci_version; | |
4f8d6632 MZ |
82 | }; |
83 | ||
84 | #define KVM_NR_MEM_OBJS 40 | |
85 | ||
86 | /* | |
87 | * We don't want allocation failures within the mmu code, so we preallocate | |
88 | * enough memory for a single page fault in a cache. | |
89 | */ | |
90 | struct kvm_mmu_memory_cache { | |
91 | int nobjs; | |
92 | void *objects[KVM_NR_MEM_OBJS]; | |
93 | }; | |
94 | ||
95 | struct kvm_vcpu_fault_info { | |
96 | u32 esr_el2; /* Hyp Syndrom Register */ | |
97 | u64 far_el2; /* Hyp Fault Address Register */ | |
98 | u64 hpfar_el2; /* Hyp IPA Fault Address Register */ | |
0067df41 | 99 | u64 disr_el1; /* Deferred [SError] Status Register */ |
4f8d6632 MZ |
100 | }; |
101 | ||
9d8415d6 MZ |
102 | /* |
103 | * 0 is reserved as an invalid value. | |
104 | * Order should be kept in sync with the save/restore code. | |
105 | */ | |
106 | enum vcpu_sysreg { | |
107 | __INVALID_SYSREG__, | |
108 | MPIDR_EL1, /* MultiProcessor Affinity Register */ | |
109 | CSSELR_EL1, /* Cache Size Selection Register */ | |
110 | SCTLR_EL1, /* System Control Register */ | |
111 | ACTLR_EL1, /* Auxiliary Control Register */ | |
112 | CPACR_EL1, /* Coprocessor Access Control */ | |
113 | TTBR0_EL1, /* Translation Table Base Register 0 */ | |
114 | TTBR1_EL1, /* Translation Table Base Register 1 */ | |
115 | TCR_EL1, /* Translation Control Register */ | |
116 | ESR_EL1, /* Exception Syndrome Register */ | |
ef769e32 AB |
117 | AFSR0_EL1, /* Auxiliary Fault Status Register 0 */ |
118 | AFSR1_EL1, /* Auxiliary Fault Status Register 1 */ | |
9d8415d6 MZ |
119 | FAR_EL1, /* Fault Address Register */ |
120 | MAIR_EL1, /* Memory Attribute Indirection Register */ | |
121 | VBAR_EL1, /* Vector Base Address Register */ | |
122 | CONTEXTIDR_EL1, /* Context ID Register */ | |
123 | TPIDR_EL0, /* Thread ID, User R/W */ | |
124 | TPIDRRO_EL0, /* Thread ID, User R/O */ | |
125 | TPIDR_EL1, /* Thread ID, Privileged */ | |
126 | AMAIR_EL1, /* Aux Memory Attribute Indirection Register */ | |
127 | CNTKCTL_EL1, /* Timer Control Register (EL1) */ | |
128 | PAR_EL1, /* Physical Address Register */ | |
129 | MDSCR_EL1, /* Monitor Debug System Control Register */ | |
130 | MDCCINT_EL1, /* Monitor Debug Comms Channel Interrupt Enable Reg */ | |
c773ae2b | 131 | DISR_EL1, /* Deferred Interrupt Status Register */ |
9d8415d6 | 132 | |
ab946834 SZ |
133 | /* Performance Monitors Registers */ |
134 | PMCR_EL0, /* Control Register */ | |
3965c3ce | 135 | PMSELR_EL0, /* Event Counter Selection Register */ |
051ff581 SZ |
136 | PMEVCNTR0_EL0, /* Event Counter Register (0-30) */ |
137 | PMEVCNTR30_EL0 = PMEVCNTR0_EL0 + 30, | |
138 | PMCCNTR_EL0, /* Cycle Counter Register */ | |
9feb21ac SZ |
139 | PMEVTYPER0_EL0, /* Event Type Register (0-30) */ |
140 | PMEVTYPER30_EL0 = PMEVTYPER0_EL0 + 30, | |
141 | PMCCFILTR_EL0, /* Cycle Count Filter Register */ | |
96b0eebc | 142 | PMCNTENSET_EL0, /* Count Enable Set Register */ |
9db52c78 | 143 | PMINTENSET_EL1, /* Interrupt Enable Set Register */ |
76d883c4 | 144 | PMOVSSET_EL0, /* Overflow Flag Status Set Register */ |
7a0adc70 | 145 | PMSWINC_EL0, /* Software Increment Register */ |
d692b8ad | 146 | PMUSERENR_EL0, /* User Enable Register */ |
ab946834 | 147 | |
9d8415d6 MZ |
148 | /* 32bit specific registers. Keep them at the end of the range */ |
149 | DACR32_EL2, /* Domain Access Control Register */ | |
150 | IFSR32_EL2, /* Instruction Fault Status Register */ | |
151 | FPEXC32_EL2, /* Floating-Point Exception Control Register */ | |
152 | DBGVCR32_EL2, /* Debug Vector Catch Register */ | |
153 | ||
154 | NR_SYS_REGS /* Nothing after this line! */ | |
155 | }; | |
156 | ||
157 | /* 32bit mapping */ | |
158 | #define c0_MPIDR (MPIDR_EL1 * 2) /* MultiProcessor ID Register */ | |
159 | #define c0_CSSELR (CSSELR_EL1 * 2)/* Cache Size Selection Register */ | |
160 | #define c1_SCTLR (SCTLR_EL1 * 2) /* System Control Register */ | |
161 | #define c1_ACTLR (ACTLR_EL1 * 2) /* Auxiliary Control Register */ | |
162 | #define c1_CPACR (CPACR_EL1 * 2) /* Coprocessor Access Control */ | |
163 | #define c2_TTBR0 (TTBR0_EL1 * 2) /* Translation Table Base Register 0 */ | |
164 | #define c2_TTBR0_high (c2_TTBR0 + 1) /* TTBR0 top 32 bits */ | |
165 | #define c2_TTBR1 (TTBR1_EL1 * 2) /* Translation Table Base Register 1 */ | |
166 | #define c2_TTBR1_high (c2_TTBR1 + 1) /* TTBR1 top 32 bits */ | |
167 | #define c2_TTBCR (TCR_EL1 * 2) /* Translation Table Base Control R. */ | |
168 | #define c3_DACR (DACR32_EL2 * 2)/* Domain Access Control Register */ | |
169 | #define c5_DFSR (ESR_EL1 * 2) /* Data Fault Status Register */ | |
170 | #define c5_IFSR (IFSR32_EL2 * 2)/* Instruction Fault Status Register */ | |
171 | #define c5_ADFSR (AFSR0_EL1 * 2) /* Auxiliary Data Fault Status R */ | |
172 | #define c5_AIFSR (AFSR1_EL1 * 2) /* Auxiliary Instr Fault Status R */ | |
173 | #define c6_DFAR (FAR_EL1 * 2) /* Data Fault Address Register */ | |
174 | #define c6_IFAR (c6_DFAR + 1) /* Instruction Fault Address Register */ | |
175 | #define c7_PAR (PAR_EL1 * 2) /* Physical Address Register */ | |
176 | #define c7_PAR_high (c7_PAR + 1) /* PAR top 32 bits */ | |
177 | #define c10_PRRR (MAIR_EL1 * 2) /* Primary Region Remap Register */ | |
178 | #define c10_NMRR (c10_PRRR + 1) /* Normal Memory Remap Register */ | |
179 | #define c12_VBAR (VBAR_EL1 * 2) /* Vector Base Address Register */ | |
180 | #define c13_CID (CONTEXTIDR_EL1 * 2) /* Context ID Register */ | |
181 | #define c13_TID_URW (TPIDR_EL0 * 2) /* Thread ID, User R/W */ | |
182 | #define c13_TID_URO (TPIDRRO_EL0 * 2)/* Thread ID, User R/O */ | |
183 | #define c13_TID_PRIV (TPIDR_EL1 * 2) /* Thread ID, Privileged */ | |
184 | #define c10_AMAIR0 (AMAIR_EL1 * 2) /* Aux Memory Attr Indirection Reg */ | |
185 | #define c10_AMAIR1 (c10_AMAIR0 + 1)/* Aux Memory Attr Indirection Reg */ | |
186 | #define c14_CNTKCTL (CNTKCTL_EL1 * 2) /* Timer Control Register (PL1) */ | |
187 | ||
188 | #define cp14_DBGDSCRext (MDSCR_EL1 * 2) | |
189 | #define cp14_DBGBCR0 (DBGBCR0_EL1 * 2) | |
190 | #define cp14_DBGBVR0 (DBGBVR0_EL1 * 2) | |
191 | #define cp14_DBGBXVR0 (cp14_DBGBVR0 + 1) | |
192 | #define cp14_DBGWCR0 (DBGWCR0_EL1 * 2) | |
193 | #define cp14_DBGWVR0 (DBGWVR0_EL1 * 2) | |
194 | #define cp14_DBGDCCINT (MDCCINT_EL1 * 2) | |
195 | ||
196 | #define NR_COPRO_REGS (NR_SYS_REGS * 2) | |
197 | ||
4f8d6632 MZ |
198 | struct kvm_cpu_context { |
199 | struct kvm_regs gp_regs; | |
40033a61 MZ |
200 | union { |
201 | u64 sys_regs[NR_SYS_REGS]; | |
72564016 | 202 | u32 copro[NR_COPRO_REGS]; |
40033a61 | 203 | }; |
c97e166e JM |
204 | |
205 | struct kvm_vcpu *__hyp_running_vcpu; | |
4f8d6632 MZ |
206 | }; |
207 | ||
208 | typedef struct kvm_cpu_context kvm_cpu_context_t; | |
209 | ||
210 | struct kvm_vcpu_arch { | |
211 | struct kvm_cpu_context ctxt; | |
212 | ||
213 | /* HYP configuration */ | |
214 | u64 hcr_el2; | |
56c7f5e7 | 215 | u32 mdcr_el2; |
4f8d6632 MZ |
216 | |
217 | /* Exception Information */ | |
218 | struct kvm_vcpu_fault_info fault; | |
219 | ||
55e3748e MZ |
220 | /* State of various workarounds, see kvm_asm.h for bit assignment */ |
221 | u64 workaround_flags; | |
222 | ||
fa89d31c DM |
223 | /* Miscellaneous vcpu state flags */ |
224 | u64 flags; | |
0c557ed4 | 225 | |
84e690bf AB |
226 | /* |
227 | * We maintain more than a single set of debug registers to support | |
228 | * debugging the guest from the host and to maintain separate host and | |
229 | * guest state during world switches. vcpu_debug_state are the debug | |
230 | * registers of the vcpu as the guest sees them. host_debug_state are | |
834bf887 AB |
231 | * the host registers which are saved and restored during |
232 | * world switches. external_debug_state contains the debug | |
233 | * values we want to debug the guest. This is set via the | |
234 | * KVM_SET_GUEST_DEBUG ioctl. | |
84e690bf AB |
235 | * |
236 | * debug_ptr points to the set of debug registers that should be loaded | |
237 | * onto the hardware when running the guest. | |
238 | */ | |
239 | struct kvm_guest_debug_arch *debug_ptr; | |
240 | struct kvm_guest_debug_arch vcpu_debug_state; | |
834bf887 | 241 | struct kvm_guest_debug_arch external_debug_state; |
84e690bf | 242 | |
4f8d6632 MZ |
243 | /* Pointer to host CPU context */ |
244 | kvm_cpu_context_t *host_cpu_context; | |
e6b673b7 DM |
245 | |
246 | struct thread_info *host_thread_info; /* hyp VA */ | |
247 | struct user_fpsimd_state *host_fpsimd_state; /* hyp VA */ | |
248 | ||
f85279b4 WD |
249 | struct { |
250 | /* {Break,watch}point registers */ | |
251 | struct kvm_guest_debug_arch regs; | |
252 | /* Statistical profiling extension */ | |
253 | u64 pmscr_el1; | |
254 | } host_debug_state; | |
4f8d6632 MZ |
255 | |
256 | /* VGIC state */ | |
257 | struct vgic_cpu vgic_cpu; | |
258 | struct arch_timer_cpu timer_cpu; | |
04fe4726 | 259 | struct kvm_pmu pmu; |
4f8d6632 MZ |
260 | |
261 | /* | |
262 | * Anything that is not used directly from assembly code goes | |
263 | * here. | |
264 | */ | |
4f8d6632 | 265 | |
337b99bf AB |
266 | /* |
267 | * Guest registers we preserve during guest debugging. | |
268 | * | |
269 | * These shadow registers are updated by the kvm_handle_sys_reg | |
270 | * trap handler if the guest accesses or updates them while we | |
271 | * are using guest debug. | |
272 | */ | |
273 | struct { | |
274 | u32 mdscr_el1; | |
275 | } guest_debug_preserved; | |
276 | ||
3781528e EA |
277 | /* vcpu power-off state */ |
278 | bool power_off; | |
4f8d6632 | 279 | |
3b92830a EA |
280 | /* Don't run the guest (internal implementation need) */ |
281 | bool pause; | |
282 | ||
4f8d6632 MZ |
283 | /* IO related fields */ |
284 | struct kvm_decode mmio_decode; | |
285 | ||
4f8d6632 MZ |
286 | /* Cache some mmu pages needed inside spinlock regions */ |
287 | struct kvm_mmu_memory_cache mmu_page_cache; | |
288 | ||
289 | /* Target CPU and feature flags */ | |
6c8c0c4d | 290 | int target; |
4f8d6632 MZ |
291 | DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); |
292 | ||
293 | /* Detect first run of a vcpu */ | |
294 | bool has_run_once; | |
4715c14b JM |
295 | |
296 | /* Virtual SError ESR to restore when HCR_EL2.VSE is set */ | |
297 | u64 vsesr_el2; | |
d47533da CD |
298 | |
299 | /* True when deferrable sysregs are loaded on the physical CPU, | |
300 | * see kvm_vcpu_load_sysregs and kvm_vcpu_put_sysregs. */ | |
301 | bool sysregs_loaded_on_cpu; | |
4f8d6632 MZ |
302 | }; |
303 | ||
fa89d31c DM |
304 | /* vcpu_arch flags field values: */ |
305 | #define KVM_ARM64_DEBUG_DIRTY (1 << 0) | |
e6b673b7 DM |
306 | #define KVM_ARM64_FP_ENABLED (1 << 1) /* guest FP regs loaded */ |
307 | #define KVM_ARM64_FP_HOST (1 << 2) /* host FP regs loaded */ | |
308 | #define KVM_ARM64_HOST_SVE_IN_USE (1 << 3) /* backup for host TIF_SVE */ | |
b3eb56b6 | 309 | #define KVM_ARM64_HOST_SVE_ENABLED (1 << 4) /* SVE enabled for EL0 */ |
fa89d31c | 310 | |
4f8d6632 | 311 | #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) |
8d404c4c CD |
312 | |
313 | /* | |
314 | * Only use __vcpu_sys_reg if you know you want the memory backed version of a | |
315 | * register, and not the one most recently accessed by a running VCPU. For | |
316 | * example, for userspace access or for system registers that are never context | |
317 | * switched, but only emulated. | |
318 | */ | |
319 | #define __vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) | |
320 | ||
d47533da CD |
321 | u64 vcpu_read_sys_reg(struct kvm_vcpu *vcpu, int reg); |
322 | void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg); | |
8d404c4c | 323 | |
72564016 MZ |
324 | /* |
325 | * CP14 and CP15 live in the same array, as they are backed by the | |
326 | * same system registers. | |
327 | */ | |
328 | #define vcpu_cp14(v,r) ((v)->arch.ctxt.copro[(r)]) | |
329 | #define vcpu_cp15(v,r) ((v)->arch.ctxt.copro[(r)]) | |
4f8d6632 MZ |
330 | |
331 | struct kvm_vm_stat { | |
8a7e75d4 | 332 | ulong remote_tlb_flush; |
4f8d6632 MZ |
333 | }; |
334 | ||
335 | struct kvm_vcpu_stat { | |
8a7e75d4 SJS |
336 | u64 halt_successful_poll; |
337 | u64 halt_attempted_poll; | |
338 | u64 halt_poll_invalid; | |
339 | u64 halt_wakeup; | |
340 | u64 hvc_exit_stat; | |
b19e6892 AT |
341 | u64 wfe_exit_stat; |
342 | u64 wfi_exit_stat; | |
343 | u64 mmio_exit_user; | |
344 | u64 mmio_exit_kernel; | |
345 | u64 exits; | |
4f8d6632 MZ |
346 | }; |
347 | ||
473bdc0e | 348 | int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); |
4f8d6632 MZ |
349 | unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); |
350 | int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); | |
4f8d6632 MZ |
351 | int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); |
352 | int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); | |
353 | ||
354 | #define KVM_ARCH_WANT_MMU_NOTIFIER | |
4f8d6632 MZ |
355 | int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); |
356 | int kvm_unmap_hva_range(struct kvm *kvm, | |
357 | unsigned long start, unsigned long end); | |
358 | void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); | |
35307b9a MZ |
359 | int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); |
360 | int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); | |
4f8d6632 | 361 | |
4f8d6632 | 362 | struct kvm_vcpu *kvm_arm_get_running_vcpu(void); |
4000be42 | 363 | struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void); |
b13216cf CD |
364 | void kvm_arm_halt_guest(struct kvm *kvm); |
365 | void kvm_arm_resume_guest(struct kvm *kvm); | |
4f8d6632 | 366 | |
a0bf9776 | 367 | u64 __kvm_call_hyp(void *hypfn, ...); |
22b39ca3 MZ |
368 | #define kvm_call_hyp(f, ...) __kvm_call_hyp(kvm_ksym_ref(f), ##__VA_ARGS__) |
369 | ||
cf5d3188 | 370 | void force_vm_exit(const cpumask_t *mask); |
8199ed0e | 371 | void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot); |
4f8d6632 MZ |
372 | |
373 | int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
374 | int exception_index); | |
3368bd80 JM |
375 | void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run, |
376 | int exception_index); | |
4f8d6632 MZ |
377 | |
378 | int kvm_perf_init(void); | |
379 | int kvm_perf_teardown(void); | |
380 | ||
4429fc64 AP |
381 | struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr); |
382 | ||
4464e210 CD |
383 | DECLARE_PER_CPU(kvm_cpu_context_t, kvm_host_cpu_state); |
384 | ||
12fda812 | 385 | static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr, |
092bd143 MZ |
386 | unsigned long hyp_stack_ptr, |
387 | unsigned long vector_ptr) | |
388 | { | |
9bc03f1d MZ |
389 | /* |
390 | * Calculate the raw per-cpu offset without a translation from the | |
391 | * kernel's mapping to the linear mapping, and store it in tpidr_el2 | |
392 | * so that we can use adr_l to access per-cpu variables in EL2. | |
393 | */ | |
394 | u64 tpidr_el2 = ((u64)this_cpu_ptr(&kvm_host_cpu_state) - | |
395 | (u64)kvm_ksym_ref(kvm_host_cpu_state)); | |
4464e210 | 396 | |
092bd143 | 397 | /* |
63a1e1c9 MR |
398 | * Call initialization code, and switch to the full blown HYP code. |
399 | * If the cpucaps haven't been finalized yet, something has gone very | |
400 | * wrong, and hyp will crash and burn when it uses any | |
401 | * cpus_have_const_cap() wrapper. | |
092bd143 | 402 | */ |
63a1e1c9 | 403 | BUG_ON(!static_branch_likely(&arm64_const_caps_ready)); |
9bc03f1d | 404 | __kvm_call_hyp((void *)pgd_ptr, hyp_stack_ptr, vector_ptr, tpidr_el2); |
092bd143 | 405 | } |
67f69197 | 406 | |
85acda3b DM |
407 | static inline bool kvm_arch_check_sve_has_vhe(void) |
408 | { | |
409 | /* | |
410 | * The Arm architecture specifies that implementation of SVE | |
411 | * requires VHE also to be implemented. The KVM code for arm64 | |
412 | * relies on this when SVE is present: | |
413 | */ | |
414 | if (system_supports_sve()) | |
415 | return has_vhe(); | |
416 | else | |
417 | return true; | |
418 | } | |
419 | ||
0865e636 RK |
420 | static inline void kvm_arch_hardware_unsetup(void) {} |
421 | static inline void kvm_arch_sync_events(struct kvm *kvm) {} | |
422 | static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} | |
423 | static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} | |
3491caf2 | 424 | static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {} |
0865e636 | 425 | |
56c7f5e7 AB |
426 | void kvm_arm_init_debug(void); |
427 | void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); | |
428 | void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); | |
84e690bf | 429 | void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); |
696673d1 | 430 | bool kvm_arm_handle_step_debug(struct kvm_vcpu *vcpu, struct kvm_run *run); |
bb0c70bc SZ |
431 | int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu, |
432 | struct kvm_device_attr *attr); | |
433 | int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu, | |
434 | struct kvm_device_attr *attr); | |
435 | int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu, | |
436 | struct kvm_device_attr *attr); | |
56c7f5e7 | 437 | |
21a4179c MZ |
438 | static inline void __cpu_init_stage2(void) |
439 | { | |
6141570c MZ |
440 | u32 parange = kvm_call_hyp(__init_stage2_translation); |
441 | ||
442 | WARN_ONCE(parange < 40, | |
443 | "PARange is %d bits, unsupported configuration!", parange); | |
21a4179c MZ |
444 | } |
445 | ||
e6b673b7 DM |
446 | /* Guest/host FPSIMD coordination helpers */ |
447 | int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu); | |
448 | void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu); | |
449 | void kvm_arch_vcpu_ctxsync_fp(struct kvm_vcpu *vcpu); | |
450 | void kvm_arch_vcpu_put_fp(struct kvm_vcpu *vcpu); | |
451 | ||
452 | #ifdef CONFIG_KVM /* Avoid conflicts with core headers if CONFIG_KVM=n */ | |
453 | static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) | |
17eed27b | 454 | { |
e6b673b7 | 455 | return kvm_arch_vcpu_run_map_fp(vcpu); |
17eed27b | 456 | } |
e6b673b7 | 457 | #endif |
17eed27b | 458 | |
4f5abad9 JM |
459 | static inline void kvm_arm_vhe_guest_enter(void) |
460 | { | |
461 | local_daif_mask(); | |
462 | } | |
463 | ||
464 | static inline void kvm_arm_vhe_guest_exit(void) | |
465 | { | |
466 | local_daif_restore(DAIF_PROCCTX_NOIRQ); | |
3f5c90b8 CD |
467 | |
468 | /* | |
469 | * When we exit from the guest we change a number of CPU configuration | |
470 | * parameters, such as traps. Make sure these changes take effect | |
471 | * before running the host or additional guests. | |
472 | */ | |
473 | isb(); | |
4f5abad9 | 474 | } |
6167ec5c MZ |
475 | |
476 | static inline bool kvm_arm_harden_branch_predictor(void) | |
477 | { | |
478 | return cpus_have_const_cap(ARM64_HARDEN_BRANCH_PREDICTOR); | |
479 | } | |
480 | ||
5d81f7dc MZ |
481 | #define KVM_SSBD_UNKNOWN -1 |
482 | #define KVM_SSBD_FORCE_DISABLE 0 | |
483 | #define KVM_SSBD_KERNEL 1 | |
484 | #define KVM_SSBD_FORCE_ENABLE 2 | |
485 | #define KVM_SSBD_MITIGATED 3 | |
486 | ||
487 | static inline int kvm_arm_have_ssbd(void) | |
488 | { | |
489 | switch (arm64_get_ssbd_state()) { | |
490 | case ARM64_SSBD_FORCE_DISABLE: | |
491 | return KVM_SSBD_FORCE_DISABLE; | |
492 | case ARM64_SSBD_KERNEL: | |
493 | return KVM_SSBD_KERNEL; | |
494 | case ARM64_SSBD_FORCE_ENABLE: | |
495 | return KVM_SSBD_FORCE_ENABLE; | |
496 | case ARM64_SSBD_MITIGATED: | |
497 | return KVM_SSBD_MITIGATED; | |
498 | case ARM64_SSBD_UNKNOWN: | |
499 | default: | |
500 | return KVM_SSBD_UNKNOWN; | |
501 | } | |
502 | } | |
503 | ||
bc192cee CD |
504 | void kvm_vcpu_load_sysregs(struct kvm_vcpu *vcpu); |
505 | void kvm_vcpu_put_sysregs(struct kvm_vcpu *vcpu); | |
506 | ||
d1e5b0e9 MO |
507 | #define __KVM_HAVE_ARCH_VM_ALLOC |
508 | struct kvm *kvm_arch_alloc_vm(void); | |
509 | void kvm_arch_free_vm(struct kvm *kvm); | |
510 | ||
4f8d6632 | 511 | #endif /* __ARM64_KVM_HOST_H__ */ |