1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright IBM Corp. 2007
6 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
9 #ifndef __POWERPC_KVM_HOST_H__
10 #define __POWERPC_KVM_HOST_H__
12 #include <linux/mutex.h>
13 #include <linux/hrtimer.h>
14 #include <linux/interrupt.h>
15 #include <linux/types.h>
16 #include <linux/kvm_types.h>
17 #include <linux/threads.h>
18 #include <linux/spinlock.h>
19 #include <linux/kvm_para.h>
20 #include <linux/list.h>
21 #include <linux/atomic.h>
22 #include <asm/kvm_asm.h>
23 #include <asm/processor.h>
25 #include <asm/cacheflush.h>
26 #include <asm/hvcall.h>
29 #define KVM_MAX_VCPUS NR_CPUS
30 #define KVM_MAX_VCORES NR_CPUS
31 #define KVM_USER_MEM_SLOTS 512
33 #include <asm/cputhreads.h>
35 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
36 #include <asm/kvm_book3s_asm.h> /* for MAX_SMT_THREADS */
37 #define KVM_MAX_VCPU_ID (MAX_SMT_THREADS * KVM_MAX_VCORES)
38 #define KVM_MAX_NESTED_GUESTS KVMPPC_NR_LPIDS
41 #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
42 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
44 #define __KVM_HAVE_ARCH_INTC_INITIALIZED
46 #define KVM_HALT_POLL_NS_DEFAULT 10000 /* 10 us */
48 /* These values are internal and can be increased later */
49 #define KVM_NR_IRQCHIPS 1
50 #define KVM_IRQCHIP_NUM_PINS 256
52 /* PPC-specific vcpu->requests bit members */
53 #define KVM_REQ_WATCHDOG KVM_ARCH_REQ(0)
54 #define KVM_REQ_EPR_EXIT KVM_ARCH_REQ(1)
56 #include <linux/mmu_notifier.h>
58 #define KVM_ARCH_WANT_MMU_NOTIFIER
60 extern int kvm_unmap_hva_range(struct kvm *kvm,
61 unsigned long start, unsigned long end);
62 extern int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
63 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
64 extern int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
66 #define HPTEG_CACHE_NUM (1 << 15)
67 #define HPTEG_HASH_BITS_PTE 13
68 #define HPTEG_HASH_BITS_PTE_LONG 12
69 #define HPTEG_HASH_BITS_VPTE 13
70 #define HPTEG_HASH_BITS_VPTE_LONG 5
71 #define HPTEG_HASH_BITS_VPTE_64K 11
72 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
73 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
74 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
75 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
76 #define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
78 /* Physical Address Mask - allowed range of real mode RAM access */
79 #define KVM_PAM 0x0fffffffffffffffULL
85 struct kvmppc_vcpu_book3s;
86 struct kvmppc_book3s_shadow_vcpu;
87 struct kvm_nested_guest;
90 ulong remote_tlb_flush;
95 struct kvm_vcpu_stat {
100 /* Account for special types of light exits: */
101 u64 itlb_real_miss_exits;
102 u64 itlb_virt_miss_exits;
103 u64 dtlb_real_miss_exits;
104 u64 dtlb_virt_miss_exits;
108 u64 emulated_inst_exits;
111 u64 halt_poll_success_ns;
112 u64 halt_poll_fail_ns;
114 u64 halt_successful_poll;
115 u64 halt_attempted_poll;
116 u64 halt_successful_wait;
117 u64 halt_poll_invalid;
123 #ifdef CONFIG_PPC_BOOK3S
137 enum kvm_exit_types {
140 ITLB_REAL_MISS_EXITS,
141 ITLB_VIRT_MISS_EXITS,
142 DTLB_REAL_MISS_EXITS,
143 DTLB_VIRT_MISS_EXITS,
148 EMULATED_MTMSRWE_EXITS,
149 EMULATED_WRTEE_EXITS,
150 EMULATED_MTSPR_EXITS,
151 EMULATED_MFSPR_EXITS,
152 EMULATED_MTMSR_EXITS,
153 EMULATED_MFMSR_EXITS,
154 EMULATED_TLBSX_EXITS,
155 EMULATED_TLBWE_EXITS,
168 __NUMBER_OF_KVM_EXIT_TYPES
171 /* allow access to big endian 32bit upper/lower parts and 64bit var */
172 struct kvmppc_exit_timing {
181 struct kvmppc_pginfo {
186 struct kvmppc_spapr_tce_iommu_table {
188 struct list_head next;
189 struct iommu_table *tbl;
193 #define TCES_PER_PAGE (PAGE_SIZE / sizeof(u64))
195 struct kvmppc_spapr_tce_table {
196 struct list_head list;
201 u64 offset; /* in pages */
202 u64 size; /* window size in pages */
203 struct list_head iommu_tables;
204 struct mutex alloc_lock;
205 struct page *pages[0];
208 /* XICS components, defined in book3s_xics.c */
211 extern struct kvm_device_ops kvm_xics_ops;
213 /* XIVE components, defined in book3s_xive.c */
215 struct kvmppc_xive_vcpu;
216 extern struct kvm_device_ops kvm_xive_ops;
217 extern struct kvm_device_ops kvm_xive_native_ops;
219 struct kvmppc_passthru_irqmap;
222 * The reverse mapping array has one entry for each HPTE,
223 * which stores the guest's view of the second word of the HPTE
224 * (including the guest physical address of the mapping),
225 * plus forward and backward pointers in a doubly-linked ring
226 * of HPTEs that map the same host page. The pointers in this
227 * ring are 32-bit HPTE indexes, to save space.
229 struct revmap_entry {
230 unsigned long guest_rpte;
231 unsigned int forw, back;
235 * The rmap array of size number of guest pages is allocated for each memslot.
236 * This array is used to store usage specific information about the guest page.
237 * Below are the encodings of the various possible usage types.
239 /* Free bits which can be used to define a new usage */
240 #define KVMPPC_RMAP_TYPE_MASK 0xff00000000000000
241 #define KVMPPC_RMAP_NESTED 0xc000000000000000 /* Nested rmap array */
242 #define KVMPPC_RMAP_HPT 0x0100000000000000 /* HPT guest */
245 * rmap usage definition for a hash page table (hpt) guest:
246 * 0x0000080000000000 Lock bit
247 * 0x0000018000000000 RC bits
248 * 0x0000000100000000 Present bit
249 * 0x00000000ffffffff HPT index bits
250 * The bottom 32 bits are the index in the guest HPT of a HPTE that points to
253 #define KVMPPC_RMAP_LOCK_BIT 43
254 #define KVMPPC_RMAP_RC_SHIFT 32
255 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
256 #define KVMPPC_RMAP_PRESENT 0x100000000ul
257 #define KVMPPC_RMAP_INDEX 0xfffffffful
259 struct kvm_arch_memory_slot {
260 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
262 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
265 struct kvm_hpt_info {
266 /* Host virtual (linear mapping) address of guest HPT */
268 /* Array of reverse mapping entries for each guest HPTE */
269 struct revmap_entry *rev;
270 /* Guest HPT size is 2**(order) bytes */
272 /* 1 if HPT allocated with CMA, 0 otherwise */
276 struct kvm_resize_hpt;
278 /* Flag values for kvm_arch.secure_guest */
279 #define KVMPPC_SECURE_INIT_START 0x1 /* H_SVM_INIT_START has been called */
280 #define KVMPPC_SECURE_INIT_DONE 0x2 /* H_SVM_INIT_DONE completed */
281 #define KVMPPC_SECURE_INIT_ABORT 0x4 /* H_SVM_INIT_ABORT issued */
285 unsigned int smt_mode; /* # vcpus per virtual core */
286 unsigned int emul_smt_mode; /* emualted SMT mode, on P9 */
287 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
288 unsigned int tlb_sets;
289 struct kvm_hpt_info hpt;
290 atomic64_t mmio_update;
291 unsigned int host_lpid;
292 unsigned long host_lpcr;
294 unsigned long host_sdr1;
296 unsigned long vrma_slb_v;
298 atomic_t vcpus_running;
300 atomic_t hpte_mod_interest;
301 cpumask_t need_tlb_flush;
302 cpumask_t cpu_in_guest;
311 struct dentry *debugfs_dir;
312 struct kvm_resize_hpt *resize_hpt; /* protected by kvm->lock */
313 #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
314 #ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
315 struct mutex hpt_mutex;
317 #ifdef CONFIG_PPC_BOOK3S_64
318 struct list_head spapr_tce_tables;
319 struct list_head rtas_tokens;
320 struct mutex rtas_token_lock;
321 DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
323 #ifdef CONFIG_KVM_MPIC
324 struct openpic *mpic;
326 #ifdef CONFIG_KVM_XICS
327 struct kvmppc_xics *xics;
328 struct kvmppc_xive *xive; /* Current XIVE device in use */
330 struct kvmppc_xive *native;
331 struct kvmppc_xive *xics_on_xive;
333 struct kvmppc_passthru_irqmap *pimap;
335 struct kvmppc_ops *kvm_ops;
336 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
337 struct mutex uvmem_lock;
338 struct list_head uvmem_pfns;
339 struct mutex mmu_setup_lock; /* nests inside vcpu mutexes */
342 struct kvm_nested_guest *nested_guests[KVM_MAX_NESTED_GUESTS];
343 /* This array can grow quite large, keep it at the end */
344 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
348 #define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff)
349 #define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8)
350 #define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0)
352 /* This bit is used when a vcore exit is triggered from outside the vcore */
353 #define VCORE_EXIT_REQ 0x10000
356 * Values for vcore_state.
357 * Note that these are arranged such that lower values
358 * (< VCORE_SLEEPING) don't require stolen time accounting
359 * on load/unload, and higher values do.
361 #define VCORE_INACTIVE 0
362 #define VCORE_PREEMPT 1
363 #define VCORE_PIGGYBACK 2
364 #define VCORE_SLEEPING 3
365 #define VCORE_RUNNING 4
366 #define VCORE_EXITING 5
367 #define VCORE_POLLING 6
370 * Struct used to manage memory for a virtual processor area
371 * registered by a PAPR guest. There are three types of area
372 * that a guest can register.
375 unsigned long gpa; /* Current guest phys addr */
376 void *pinned_addr; /* Address in kernel linear mapping */
377 void *pinned_end; /* End of region */
378 unsigned long next_gpa; /* Guest phys addr for update */
379 unsigned long len; /* Number of bytes required */
380 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
381 bool dirty; /* true => area has been modified by kernel */
390 bool may_execute : 1;
393 u8 page_size; /* MMU_PAGE_xxx */
399 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
400 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
401 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
402 int (*slbfee)(struct kvm_vcpu *vcpu, gva_t eaddr, ulong *ret_slb);
403 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
404 void (*slbia)(struct kvm_vcpu *vcpu);
406 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
407 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
408 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
409 struct kvmppc_pte *pte, bool data, bool iswrite);
410 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
411 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
412 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
413 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
425 bool large : 1; /* PTEs are 16MB */
426 bool tb : 1; /* 1TB segment */
428 u8 base_page_size; /* MMU_PAGE_xxx */
431 /* Struct used to accumulate timing information in HV real mode code */
432 struct kvmhv_tb_accumulator {
433 u64 seqcount; /* used to synchronize access, also count * 2 */
434 u64 tb_total; /* total time in timebase ticks */
435 u64 tb_min; /* min time */
436 u64 tb_max; /* max time */
439 #ifdef CONFIG_PPC_BOOK3S_64
440 struct kvmppc_irq_map {
443 struct irq_desc *desc;
446 #define KVMPPC_PIRQ_MAPPED 1024
447 struct kvmppc_passthru_irqmap {
449 struct kvmppc_irq_map mapped[KVMPPC_PIRQ_MAPPED];
453 # ifdef CONFIG_PPC_FSL_BOOK3E
454 #define KVMPPC_BOOKE_IAC_NUM 2
455 #define KVMPPC_BOOKE_DAC_NUM 2
457 #define KVMPPC_BOOKE_IAC_NUM 4
458 #define KVMPPC_BOOKE_DAC_NUM 2
460 #define KVMPPC_BOOKE_MAX_IAC 4
461 #define KVMPPC_BOOKE_MAX_DAC 2
463 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
464 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
465 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
466 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
468 #define KVMPPC_IRQ_DEFAULT 0
469 #define KVMPPC_IRQ_MPIC 1
470 #define KVMPPC_IRQ_XICS 2 /* Includes a XIVE option */
471 #define KVMPPC_IRQ_XIVE 3 /* XIVE native exploitation mode */
473 #define MMIO_HPTE_CACHE_SIZE 4
475 struct mmio_hpte_cache_entry {
476 unsigned long hpte_v;
477 unsigned long hpte_r;
479 unsigned long pte_index;
483 unsigned int slb_base_pshift;
486 struct mmio_hpte_cache {
487 struct mmio_hpte_cache_entry entry[MMIO_HPTE_CACHE_SIZE];
491 #define KVMPPC_VSX_COPY_NONE 0
492 #define KVMPPC_VSX_COPY_WORD 1
493 #define KVMPPC_VSX_COPY_DWORD 2
494 #define KVMPPC_VSX_COPY_DWORD_LOAD_DUMP 3
495 #define KVMPPC_VSX_COPY_WORD_LOAD_DUMP 4
497 #define KVMPPC_VMX_COPY_BYTE 8
498 #define KVMPPC_VMX_COPY_HWORD 9
499 #define KVMPPC_VMX_COPY_WORD 10
500 #define KVMPPC_VMX_COPY_DWORD 11
504 /* W0 and W1 of a XIVE thread management context */
519 struct kvm_vcpu_arch {
522 #ifdef CONFIG_PPC_BOOK3S
523 struct kvmppc_slb slb[64];
524 int slb_max; /* 1 + index of last valid entry in slb[] */
525 int slb_nr; /* total number of entries in SLB */
526 struct kvmppc_mmu mmu;
527 struct kvmppc_vcpu_book3s *book3s;
529 #ifdef CONFIG_PPC_BOOK3S_32
530 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
535 struct thread_fp_state fp;
543 #ifdef CONFIG_ALTIVEC
544 struct thread_vr_state vr;
547 #ifdef CONFIG_KVM_BOOKE_HV
557 #if defined(CONFIG_BOOKE)
558 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
563 #ifdef CONFIG_PPC_BOOK3S
564 /* For Gekko paired singles */
568 #ifdef CONFIG_PPC_BOOK3S
572 #ifdef CONFIG_PPC_BOOK3S
574 ulong guest_owned_ext;
606 u32 vrsave; /* also USPRG0 */
608 /* shadow_msr is unused for BookE HV */
621 /* Time base value when we entered the guest */
626 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
646 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
663 struct thread_fp_state fp_tm;
665 struct thread_vr_state vr_tm;
666 u32 vrsave_tm; /* also USPRG0 */
669 #ifdef CONFIG_KVM_EXIT_TIMING
670 struct mutex exit_timing_lock;
671 struct kvmppc_exit_timing timing_exit;
672 struct kvmppc_exit_timing timing_last_enter;
674 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
675 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
676 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
677 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
678 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
679 u64 timing_last_exit;
680 struct dentry *debugfs_exit_timing;
683 #ifdef CONFIG_PPC_BOOK3S
686 unsigned long intr_msr;
687 ulong fault_gpa; /* guest real address of page fault (POWER9) */
696 struct timer_list wdt_timer;
705 /* guest debug registers*/
706 struct debug_reg dbg_reg;
708 gpa_t paddr_accessed;
709 gva_t vaddr_accessed;
712 u16 io_gpr; /* GPR used as IO source/target */
713 u8 mmio_host_swabbed;
715 /* conversion between single and double precision */
718 * Number of simulations for vsx.
719 * If we use 2*8bytes to simulate 1*16bytes,
720 * then the number should be 2 and
721 * mmio_copy_type=KVMPPC_VSX_COPY_DWORD.
722 * If we use 4*4bytes to simulate 1*16bytes,
723 * the number should be 4 and
724 * mmio_vsx_copy_type=KVMPPC_VSX_COPY_WORD.
726 u8 mmio_vsx_copy_nums;
728 u8 mmio_vmx_copy_nums;
738 u8 epr_flags; /* KVMPPC_EPR_xxx */
740 u8 external_oneshot; /* clear external irq after delivery */
742 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
744 struct hrtimer dec_timer;
747 unsigned long pending_exceptions;
751 u8 irq_pending; /* Used by XIVE to signal pending guest irqs */
754 struct rcuwait *waitp;
755 struct kvmppc_vcore *vcore;
763 wait_queue_head_t cpu_run;
764 struct machine_check_event mce_evt; /* Valid if trap == 0x200 */
766 struct kvm_vcpu_arch_shared *shared;
767 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
768 bool shared_big_endian;
770 unsigned long magic_page_pa; /* phys addr to map the magic page to */
771 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
772 bool disable_kernel_nx;
774 int irq_type; /* one of KVM_IRQ_* */
776 struct openpic *mpic; /* KVM_IRQ_MPIC */
777 #ifdef CONFIG_KVM_XICS
778 struct kvmppc_icp *icp; /* XICS presentation controller */
779 struct kvmppc_xive_vcpu *xive_vcpu; /* XIVE virtual CPU data */
780 __be32 xive_cam_word; /* Cooked W2 in proper endian with valid bit */
781 u8 xive_pushed; /* Is the VP pushed on the physical CPU ? */
782 u8 xive_esc_on; /* Is the escalation irq enabled ? */
783 union xive_tma_w01 xive_saved_state; /* W0..1 of XIVE thread state */
784 u64 xive_esc_raddr; /* Escalation interrupt ESB real addr */
785 u64 xive_esc_vaddr; /* Escalation interrupt ESB virt addr */
788 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
789 struct kvm_vcpu_arch_shared shregs;
791 struct mmio_hpte_cache mmio_cache;
792 unsigned long pgfault_addr;
794 unsigned long pgfault_hpte[2];
795 struct mmio_hpte_cache_entry *pgfault_cache;
797 struct task_struct *run_task;
799 spinlock_t vpa_update_lock;
800 struct kvmppc_vpa vpa;
801 struct kvmppc_vpa dtl;
802 struct dtl_entry *dtl_ptr;
803 unsigned long dtl_index;
805 struct kvmppc_vpa slb_shadow;
807 spinlock_t tbacct_lock;
815 /* For support of nested guests */
816 struct kvm_nested_guest *nested;
821 #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
822 struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */
823 u64 cur_tb_start; /* when it started */
824 struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */
825 struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */
826 struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */
827 struct kvmhv_tb_accumulator guest_time; /* guest execution */
828 struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */
830 struct dentry *debugfs_dir;
831 #endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
834 #define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
835 #define VCPU_VSX_FPR(vcpu, i, j) ((vcpu)->arch.fp.fpr[i][j])
836 #define VCPU_VSX_VR(vcpu, i) ((vcpu)->arch.vr.vr[i])
838 /* Values for vcpu->arch.state */
839 #define KVMPPC_VCPU_NOTREADY 0
840 #define KVMPPC_VCPU_RUNNABLE 1
841 #define KVMPPC_VCPU_BUSY_IN_HOST 2
843 /* Values for vcpu->arch.io_gpr */
844 #define KVM_MMIO_REG_MASK 0x003f
845 #define KVM_MMIO_REG_EXT_MASK 0xffc0
846 #define KVM_MMIO_REG_GPR 0x0000
847 #define KVM_MMIO_REG_FPR 0x0040
848 #define KVM_MMIO_REG_QPR 0x0080
849 #define KVM_MMIO_REG_FQPR 0x00c0
850 #define KVM_MMIO_REG_VSX 0x0100
851 #define KVM_MMIO_REG_VMX 0x0180
852 #define KVM_MMIO_REG_NESTED_GPR 0xffc0
855 #define __KVM_HAVE_ARCH_WQP
856 #define __KVM_HAVE_CREATE_DEVICE
858 static inline void kvm_arch_hardware_disable(void) {}
859 static inline void kvm_arch_hardware_unsetup(void) {}
860 static inline void kvm_arch_sync_events(struct kvm *kvm) {}
861 static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
862 static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
863 static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
864 static inline void kvm_arch_exit(void) {}
865 static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
866 static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
867 static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
869 #endif /* __POWERPC_KVM_HOST_H__ */