| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * |
| * Copyright SUSE Linux Products GmbH 2009 |
| * |
| * Authors: Alexander Graf <agraf@suse.de> |
| */ |
| |
| #ifndef __ASM_KVM_BOOK3S_H__ |
| #define __ASM_KVM_BOOK3S_H__ |
| |
| #include <linux/types.h> |
| #include <linux/kvm_host.h> |
| #include <asm/kvm_book3s_asm.h> |
| |
| struct kvmppc_bat { |
| u64 raw; |
| u32 bepi; |
| u32 bepi_mask; |
| u32 brpn; |
| u8 wimg; |
| u8 pp; |
| bool vs : 1; |
| bool vp : 1; |
| }; |
| |
| struct kvmppc_sid_map { |
| u64 guest_vsid; |
| u64 guest_esid; |
| u64 host_vsid; |
| bool valid : 1; |
| }; |
| |
| #define SID_MAP_BITS 9 |
| #define SID_MAP_NUM (1 << SID_MAP_BITS) |
| #define SID_MAP_MASK (SID_MAP_NUM - 1) |
| |
| #ifdef CONFIG_PPC_BOOK3S_64 |
| #define SID_CONTEXTS 1 |
| #else |
| #define SID_CONTEXTS 128 |
| #define VSID_POOL_SIZE (SID_CONTEXTS * 16) |
| #endif |
| |
| struct hpte_cache { |
| struct hlist_node list_pte; |
| struct hlist_node list_pte_long; |
| struct hlist_node list_vpte; |
| struct hlist_node list_vpte_long; |
| #ifdef CONFIG_PPC_BOOK3S_64 |
| struct hlist_node list_vpte_64k; |
| #endif |
| struct rcu_head rcu_head; |
| u64 host_vpn; |
| u64 pfn; |
| ulong slot; |
| struct kvmppc_pte pte; |
| int pagesize; |
| }; |
| |
| /* |
| * Struct for a virtual core. |
| * Note: entry_exit_map combines a bitmap of threads that have entered |
| * in the bottom 8 bits and a bitmap of threads that have exited in the |
| * next 8 bits. This is so that we can atomically set the entry bit |
| * iff the exit map is 0 without taking a lock. |
| */ |
| struct kvmppc_vcore { |
| int n_runnable; |
| int num_threads; |
| int entry_exit_map; |
| int napping_threads; |
| int first_vcpuid; |
| u16 pcpu; |
| u16 last_cpu; |
| u8 vcore_state; |
| u8 in_guest; |
| struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS]; |
| struct list_head preempt_list; |
| spinlock_t lock; |
| struct rcuwait wait; |
| spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */ |
| u64 stolen_tb; |
| u64 preempt_tb; |
| struct kvm_vcpu *runner; |
| struct kvm *kvm; |
| u64 tb_offset; /* guest timebase - host timebase */ |
| u64 tb_offset_applied; /* timebase offset currently in force */ |
| ulong lpcr; |
| u32 arch_compat; |
| ulong pcr; |
| ulong dpdes; /* doorbell state (POWER8) */ |
| ulong vtb; /* virtual timebase */ |
| ulong conferring_threads; |
| unsigned int halt_poll_ns; |
| atomic_t online_count; |
| }; |
| |
| struct kvmppc_vcpu_book3s { |
| struct kvmppc_sid_map sid_map[SID_MAP_NUM]; |
| struct { |
| u64 esid; |
| u64 vsid; |
| } slb_shadow[64]; |
| u8 slb_shadow_max; |
| struct kvmppc_bat ibat[8]; |
| struct kvmppc_bat dbat[8]; |
| u64 hid[6]; |
| u64 gqr[8]; |
| u64 sdr1; |
| u64 hior; |
| u64 msr_mask; |
| u64 vtb; |
| #ifdef CONFIG_PPC_BOOK3S_32 |
| u32 vsid_pool[VSID_POOL_SIZE]; |
| u32 vsid_next; |
| #else |
| u64 proto_vsid_first; |
| u64 proto_vsid_max; |
| u64 proto_vsid_next; |
| #endif |
| int context_id[SID_CONTEXTS]; |
| |
| bool hior_explicit; /* HIOR is set by ioctl, not PVR */ |
| |
| struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; |
| struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; |
| struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; |
| struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; |
| #ifdef CONFIG_PPC_BOOK3S_64 |
| struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K]; |
| #endif |
| int hpte_cache_count; |
| spinlock_t mmu_lock; |
| }; |
| |
| #define VSID_REAL 0x07ffffffffc00000ULL |
| #define VSID_BAT 0x07ffffffffb00000ULL |
| #define VSID_64K 0x0800000000000000ULL |
| #define VSID_1T 0x1000000000000000ULL |
| #define VSID_REAL_DR 0x2000000000000000ULL |
| #define VSID_REAL_IR 0x4000000000000000ULL |
| #define VSID_PR 0x8000000000000000ULL |
| |
| extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); |
| extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); |
| extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); |
| extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); |
| extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); |
| extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); |
| extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); |
| extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte, |
| bool iswrite); |
| extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); |
| extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); |
| extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size); |
| extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); |
| extern int kvmppc_book3s_hv_page_fault(struct kvm_vcpu *vcpu, |
| unsigned long addr, unsigned long status); |
| extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, |
| unsigned long slb_v, unsigned long valid); |
| extern int kvmppc_hv_emulate_mmio(struct kvm_vcpu *vcpu, |
| unsigned long gpa, gva_t ea, int is_store); |
| |
| extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); |
| extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); |
| extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte); |
| extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); |
| extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); |
| extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); |
| extern int kvmppc_mmu_hpte_sysinit(void); |
| extern void kvmppc_mmu_hpte_sysexit(void); |
| extern int kvmppc_mmu_hv_init(void); |
| extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc); |
| |
| extern int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu, |
| unsigned long ea, unsigned long dsisr); |
| extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid, |
| gva_t eaddr, void *to, void *from, |
| unsigned long n); |
| extern long kvmhv_copy_from_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, |
| void *to, unsigned long n); |
| extern long kvmhv_copy_to_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr, |
| void *from, unsigned long n); |
| extern int kvmppc_mmu_walk_radix_tree(struct kvm_vcpu *vcpu, gva_t eaddr, |
| struct kvmppc_pte *gpte, u64 root, |
| u64 *pte_ret_p); |
| extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr, |
| struct kvmppc_pte *gpte, u64 table, |
| int table_index, u64 *pte_ret_p); |
| extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, |
| struct kvmppc_pte *gpte, bool data, bool iswrite); |
| extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr, |
| unsigned int pshift, unsigned int lpid); |
| extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, |
| unsigned int shift, |
| const struct kvm_memory_slot *memslot, |
| unsigned int lpid); |
| extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, |
| bool writing, unsigned long gpa, |
| unsigned int lpid); |
| extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, |
| unsigned long gpa, |
| struct kvm_memory_slot *memslot, |
| bool writing, bool kvm_ro, |
| pte_t *inserted_pte, unsigned int *levelp); |
| extern int kvmppc_init_vm_radix(struct kvm *kvm); |
| extern void kvmppc_free_radix(struct kvm *kvm); |
| extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd, |
| unsigned int lpid); |
| extern int kvmppc_radix_init(void); |
| extern void kvmppc_radix_exit(void); |
| extern void kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, |
| unsigned long gfn); |
| extern bool kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, |
| unsigned long gfn); |
| extern bool kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, |
| unsigned long gfn); |
| extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm, |
| struct kvm_memory_slot *memslot, unsigned long *map); |
| extern void kvmppc_radix_flush_memslot(struct kvm *kvm, |
| const struct kvm_memory_slot *memslot); |
| extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info); |
| |
| /* XXX remove this export when load_last_inst() is generic */ |
| extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); |
| extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); |
| extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, |
| unsigned int vec); |
| extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); |
| extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac); |
| extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, |
| bool upper, u32 val); |
| extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); |
| extern int kvmppc_emulate_paired_single(struct kvm_vcpu *vcpu); |
| extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, |
| bool writing, bool *writable); |
| extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, |
| unsigned long *rmap, long pte_index, int realmode); |
| extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot, |
| unsigned long gfn, unsigned long psize); |
| extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep, |
| unsigned long pte_index); |
| void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep, |
| unsigned long pte_index); |
| extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, |
| unsigned long *nb_ret); |
| extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, |
| unsigned long gpa, bool dirty); |
| extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, |
| long pte_index, unsigned long pteh, unsigned long ptel, |
| pgd_t *pgdir, bool realmode, unsigned long *idx_ret); |
| extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, |
| unsigned long pte_index, unsigned long avpn, |
| unsigned long *hpret); |
| extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm, |
| struct kvm_memory_slot *memslot, unsigned long *map); |
| extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa, |
| struct kvm_memory_slot *memslot, |
| unsigned long *map); |
| extern unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm, |
| unsigned long lpcr); |
| extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, |
| unsigned long mask); |
| extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr); |
| |
| extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu); |
| extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu); |
| extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu); |
| |
| extern void kvmppc_entry_trampoline(void); |
| extern void kvmppc_hv_entry_trampoline(void); |
| extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); |
| extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); |
| extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); |
| extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm); |
| extern int kvmppc_hcall_impl_pr(unsigned long cmd); |
| extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd); |
| extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu); |
| extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu); |
| |
| long kvmppc_read_intr(void); |
| void kvmppc_bad_interrupt(struct pt_regs *regs); |
| void kvmhv_p9_set_lpcr(struct kvm_split_mode *sip); |
| void kvmhv_p9_restore_lpcr(struct kvm_split_mode *sip); |
| void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr); |
| void kvmppc_inject_interrupt_hv(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); |
| |
| #ifdef CONFIG_PPC_TRANSACTIONAL_MEM |
| void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu); |
| void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu); |
| void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu); |
| void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu); |
| #else |
| static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {} |
| static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {} |
| static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {} |
| static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {} |
| #endif |
| |
| long kvmhv_nested_init(void); |
| void kvmhv_nested_exit(void); |
| void kvmhv_vm_nested_init(struct kvm *kvm); |
| long kvmhv_set_partition_table(struct kvm_vcpu *vcpu); |
| long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu); |
| void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1); |
| void kvmhv_release_all_nested(struct kvm *kvm); |
| long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu); |
| long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu); |
| long do_h_rpt_invalidate_pat(struct kvm_vcpu *vcpu, unsigned long lpid, |
| unsigned long type, unsigned long pg_sizes, |
| unsigned long start, unsigned long end); |
| int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, |
| u64 time_limit, unsigned long lpcr); |
| void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr); |
| void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu, |
| struct hv_guest_state *hr); |
| long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu); |
| |
| void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac); |
| |
| extern int kvm_irq_bypass; |
| |
| static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.book3s; |
| } |
| |
| /* Also add subarch specific defines */ |
| |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER |
| #include <asm/kvm_book3s_32.h> |
| #endif |
| #ifdef CONFIG_KVM_BOOK3S_64_HANDLER |
| #include <asm/kvm_book3s_64.h> |
| #endif |
| |
| static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) |
| { |
| vcpu->arch.regs.gpr[num] = val; |
| } |
| |
| static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) |
| { |
| return vcpu->arch.regs.gpr[num]; |
| } |
| |
| static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) |
| { |
| vcpu->arch.regs.ccr = val; |
| } |
| |
| static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.regs.ccr; |
| } |
| |
| static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val) |
| { |
| vcpu->arch.regs.xer = val; |
| } |
| |
| static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.regs.xer; |
| } |
| |
| static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) |
| { |
| vcpu->arch.regs.ctr = val; |
| } |
| |
| static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.regs.ctr; |
| } |
| |
| static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) |
| { |
| vcpu->arch.regs.link = val; |
| } |
| |
| static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.regs.link; |
| } |
| |
| static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) |
| { |
| vcpu->arch.regs.nip = val; |
| } |
| |
| static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.regs.nip; |
| } |
| |
| static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu); |
| static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu) |
| { |
| return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE); |
| } |
| |
| static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->arch.fault_dar; |
| } |
| |
| static inline bool is_kvmppc_resume_guest(int r) |
| { |
| return (r == RESUME_GUEST || r == RESUME_GUEST_NV); |
| } |
| |
| static inline bool is_kvmppc_hv_enabled(struct kvm *kvm); |
| static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu) |
| { |
| /* Only PR KVM supports the magic page */ |
| return !is_kvmppc_hv_enabled(vcpu->kvm); |
| } |
| |
| extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu); |
| extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu); |
| |
| /* Magic register values loaded into r3 and r4 before the 'sc' assembly |
| * instruction for the OSI hypercalls */ |
| #define OSI_SC_MAGIC_R3 0x113724FA |
| #define OSI_SC_MAGIC_R4 0x77810F9B |
| |
| #define INS_DCBZ 0x7c0007ec |
| /* TO = 31 for unconditional trap */ |
| #define INS_TW 0x7fe00008 |
| |
| #define SPLIT_HACK_MASK 0xff000000 |
| #define SPLIT_HACK_OFFS 0xfb000000 |
| |
| /* |
| * This packs a VCPU ID from the [0..KVM_MAX_VCPU_IDS) space down to the |
| * [0..KVM_MAX_VCPUS) space, using knowledge of the guest's core stride |
| * (but not its actual threading mode, which is not available) to avoid |
| * collisions. |
| * |
| * The implementation leaves VCPU IDs from the range [0..KVM_MAX_VCPUS) (block |
| * 0) unchanged: if the guest is filling each VCORE completely then it will be |
| * using consecutive IDs and it will fill the space without any packing. |
| * |
| * For higher VCPU IDs, the packed ID is based on the VCPU ID modulo |
| * KVM_MAX_VCPUS (effectively masking off the top bits) and then an offset is |
| * added to avoid collisions. |
| * |
| * VCPU IDs in the range [KVM_MAX_VCPUS..(KVM_MAX_VCPUS*2)) (block 1) are only |
| * possible if the guest is leaving at least 1/2 of each VCORE empty, so IDs |
| * can be safely packed into the second half of each VCORE by adding an offset |
| * of (stride / 2). |
| * |
| * Similarly, if VCPU IDs in the range [(KVM_MAX_VCPUS*2)..(KVM_MAX_VCPUS*4)) |
| * (blocks 2 and 3) are seen, the guest must be leaving at least 3/4 of each |
| * VCORE empty so packed IDs can be offset by (stride / 4) and (stride * 3 / 4). |
| * |
| * Finally, VCPU IDs from blocks 5..7 will only be seen if the guest is using a |
| * stride of 8 and 1 thread per core so the remaining offsets of 1, 5, 3 and 7 |
| * must be free to use. |
| * |
| * (The offsets for each block are stored in block_offsets[], indexed by the |
| * block number if the stride is 8. For cases where the guest's stride is less |
| * than 8, we can re-use the block_offsets array by multiplying the block |
| * number by (MAX_SMT_THREADS / stride) to reach the correct entry.) |
| */ |
| static inline u32 kvmppc_pack_vcpu_id(struct kvm *kvm, u32 id) |
| { |
| const int block_offsets[MAX_SMT_THREADS] = {0, 4, 2, 6, 1, 5, 3, 7}; |
| int stride = kvm->arch.emul_smt_mode; |
| int block = (id / KVM_MAX_VCPUS) * (MAX_SMT_THREADS / stride); |
| u32 packed_id; |
| |
| if (WARN_ONCE(block >= MAX_SMT_THREADS, "VCPU ID too large to pack")) |
| return 0; |
| packed_id = (id % KVM_MAX_VCPUS) + block_offsets[block]; |
| if (WARN_ONCE(packed_id >= KVM_MAX_VCPUS, "VCPU ID packing failed")) |
| return 0; |
| return packed_id; |
| } |
| |
| #endif /* __ASM_KVM_BOOK3S_H__ */ |
