diff options
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 619 |
1 files changed, 423 insertions, 196 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 08891d07aeb6..e1ff291ba891 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -1,16 +1,5 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Copyright SUSE Linux Products GmbH 2009 * @@ -23,6 +12,7 @@ #include <linux/types.h> #include <linux/kvm_host.h> #include <asm/kvm_book3s_asm.h> +#include <asm/guest-state-buffer.h> struct kvmppc_bat { u64 raw; @@ -58,16 +48,56 @@ struct hpte_cache { 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 kvm_vcpu vcpu; - struct kvmppc_book3s_shadow_vcpu *shadow_vcpu; struct kvmppc_sid_map sid_map[SID_MAP_NUM]; struct { u64 esid; @@ -81,8 +111,7 @@ struct kvmppc_vcpu_book3s { u64 sdr1; u64 hior; u64 msr_mask; - u64 purr_offset; - u64 spurr_offset; + u64 vtb; #ifdef CONFIG_PPC_BOOK3S_32 u32 vsid_pool[VSID_POOL_SIZE]; u32 vsid_next; @@ -99,16 +128,16 @@ struct kvmppc_vcpu_book3s { 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 CONTEXT_HOST 0 -#define CONTEXT_GUEST 1 -#define CONTEXT_GUEST_END 2 - -#define VSID_REAL 0x0fffffffffc00000ULL -#define VSID_BAT 0x0fffffffffb00000ULL +#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 @@ -118,344 +147,495 @@ 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_set_pvr(struct kvm_vcpu *vcpu, u32 pvr); 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); +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_run *run, - struct kvm_vcpu *vcpu, unsigned long addr, - unsigned long status); +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, u64 lpid); +extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, + unsigned int shift, + const struct kvm_memory_slot *memslot, + u64 lpid); +extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, + bool writing, unsigned long gpa, + u64 lpid); +extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, + unsigned long gpa, + struct kvm_memory_slot *memslot, + bool writing, + 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, + u64 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 int kvmppc_st(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_run *run, struct kvm_vcpu *vcpu); -extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); +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, struct page **page); extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, unsigned long *rmap, long pte_index, int realmode); -extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep, +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, unsigned long *hptep, +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_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, - long pte_index, unsigned long pteh, unsigned long ptel); 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(struct kvm *kvm, +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 void kvmppc_load_up_fpu(void); -extern void kvmppc_load_up_altivec(void); -extern void kvmppc_load_up_vsx(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_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 -static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) +extern unsigned long nested_capabilities; +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_flush_lpid(u64 lpid); +void kvmhv_set_ptbl_entry(u64 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); + + +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE + +extern struct static_key_false __kvmhv_is_nestedv2; + +static inline bool kvmhv_is_nestedv2(void) { - return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu); + return static_branch_unlikely(&__kvmhv_is_nestedv2); } -extern void kvm_return_point(void); +static inline bool kvmhv_is_nestedv1(void) +{ + return !static_branch_likely(&__kvmhv_is_nestedv2); +} -/* Also add subarch specific defines */ +#else + +static inline bool kvmhv_is_nestedv2(void) +{ + return false; +} + +static inline bool kvmhv_is_nestedv1(void) +{ + return false; +} -#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 -#ifdef CONFIG_KVM_BOOK3S_PR +int __kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs); +int __kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, struct pt_regs *regs); +int __kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden); +int __kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden); -static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) +static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, + struct pt_regs *regs) { - return to_book3s(vcpu)->hior; + if (kvmhv_is_nestedv2()) + return __kvmhv_nestedv2_reload_ptregs(vcpu, regs); + return 0; +} +static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, + struct pt_regs *regs) +{ + if (kvmhv_is_nestedv2()) + return __kvmhv_nestedv2_mark_dirty_ptregs(vcpu, regs); + return 0; } -static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, - unsigned long pending_now, unsigned long old_pending) +static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden) { - if (pending_now) - vcpu->arch.shared->int_pending = 1; - else if (old_pending) - vcpu->arch.shared->int_pending = 0; + if (kvmhv_is_nestedv2()) + return __kvmhv_nestedv2_mark_dirty(vcpu, iden); + return 0; } +static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden) +{ + if (kvmhv_is_nestedv2()) + return __kvmhv_nestedv2_cached_reload(vcpu, iden); + return 0; +} + +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) { - if ( num < 14 ) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->gpr[num] = val; - svcpu_put(svcpu); - to_book3s(vcpu)->shadow_vcpu->gpr[num] = val; - } else - vcpu->arch.gpr[num] = val; + vcpu->arch.regs.gpr[num] = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_GPR(num)); } static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) { - if ( num < 14 ) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - ulong r = svcpu->gpr[num]; - svcpu_put(svcpu); - return r; - } else - return vcpu->arch.gpr[num]; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_GPR(num)) < 0); + return vcpu->arch.regs.gpr[num]; } static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->cr = val; - svcpu_put(svcpu); - to_book3s(vcpu)->shadow_vcpu->cr = val; + vcpu->arch.regs.ccr = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CR); } static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - u32 r; - r = svcpu->cr; - svcpu_put(svcpu); - return r; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CR) < 0); + return vcpu->arch.regs.ccr; } -static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) +static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->xer = val; - to_book3s(vcpu)->shadow_vcpu->xer = val; - svcpu_put(svcpu); + vcpu->arch.regs.xer = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_XER); } -static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) +static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - u32 r; - r = svcpu->xer; - svcpu_put(svcpu); - return r; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_XER) < 0); + return vcpu->arch.regs.xer; } static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->ctr = val; - svcpu_put(svcpu); + vcpu->arch.regs.ctr = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_CTR); } static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - ulong r; - r = svcpu->ctr; - svcpu_put(svcpu); - return r; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_CTR) < 0); + return vcpu->arch.regs.ctr; } static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->lr = val; - svcpu_put(svcpu); + vcpu->arch.regs.link = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_LR); } static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - ulong r; - r = svcpu->lr; - svcpu_put(svcpu); - return r; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_LR) < 0); + return vcpu->arch.regs.link; } static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->pc = val; - svcpu_put(svcpu); + vcpu->arch.regs.nip = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_NIA); } static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - ulong r; - r = svcpu->pc; - svcpu_put(svcpu); - return r; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_NIA) < 0); + return vcpu->arch.regs.nip; } -static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) +static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu); +static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu) { - ulong pc = kvmppc_get_pc(vcpu); - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - u32 r; - - /* Load the instruction manually if it failed to do so in the - * exit path */ - if (svcpu->last_inst == KVM_INST_FETCH_FAILED) - kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false); - - r = svcpu->last_inst; - svcpu_put(svcpu); - return r; + return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE); } static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) { - struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - ulong r; - r = svcpu->fault_dar; - svcpu_put(svcpu); - return r; + return vcpu->arch.fault_dar; } -static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) +static inline u64 kvmppc_get_fpr(struct kvm_vcpu *vcpu, int i) { - ulong crit_raw = vcpu->arch.shared->critical; - ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); - bool crit; - - /* Truncate crit indicators in 32 bit mode */ - if (!(vcpu->arch.shared->msr & MSR_SF)) { - crit_raw &= 0xffffffff; - crit_r1 &= 0xffffffff; - } - - /* Critical section when crit == r1 */ - crit = (crit_raw == crit_r1); - /* ... and we're in supervisor mode */ - crit = crit && !(vcpu->arch.shared->msr & MSR_PR); - - return crit; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0); + return vcpu->arch.fp.fpr[i][TS_FPROFFSET]; } -#else /* CONFIG_KVM_BOOK3S_PR */ -static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) +static inline void kvmppc_set_fpr(struct kvm_vcpu *vcpu, int i, u64 val) { - return 0; + vcpu->arch.fp.fpr[i][TS_FPROFFSET] = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i)); } -static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, - unsigned long pending_now, unsigned long old_pending) +static inline u64 kvmppc_get_fpscr(struct kvm_vcpu *vcpu) { + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_FPSCR) < 0); + return vcpu->arch.fp.fpscr; } -static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) +static inline void kvmppc_set_fpscr(struct kvm_vcpu *vcpu, u64 val) { - vcpu->arch.gpr[num] = val; + vcpu->arch.fp.fpscr = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_FPSCR); } -static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) + +static inline u64 kvmppc_get_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j) { - return vcpu->arch.gpr[num]; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(i)) < 0); + return vcpu->arch.fp.fpr[i][j]; } -static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) +static inline void kvmppc_set_vsx_fpr(struct kvm_vcpu *vcpu, int i, int j, + u64 val) { - vcpu->arch.cr = val; + vcpu->arch.fp.fpr[i][j] = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(i)); } -static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) +#ifdef CONFIG_ALTIVEC +static inline void kvmppc_get_vsx_vr(struct kvm_vcpu *vcpu, int i, vector128 *v) { - return vcpu->arch.cr; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSRS(32 + i)) < 0); + *v = vcpu->arch.vr.vr[i]; } -static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) +static inline void kvmppc_set_vsx_vr(struct kvm_vcpu *vcpu, int i, + vector128 *val) { - vcpu->arch.xer = val; + vcpu->arch.vr.vr[i] = *val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSRS(32 + i)); } -static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) +static inline u32 kvmppc_get_vscr(struct kvm_vcpu *vcpu) { - return vcpu->arch.xer; + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_VSCR) < 0); + return vcpu->arch.vr.vscr.u[3]; } -static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) +static inline void kvmppc_set_vscr(struct kvm_vcpu *vcpu, u32 val) { - vcpu->arch.ctr = val; + vcpu->arch.vr.vscr.u[3] = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_VSCR); } +#endif -static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) -{ - return vcpu->arch.ctr; +#define KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \ +static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ +{ \ + \ + vcpu->arch.reg = val; \ + kvmhv_nestedv2_mark_dirty(vcpu, iden); \ } -static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) -{ - vcpu->arch.lr = val; +#define KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \ +static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ +{ \ + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ + return vcpu->arch.reg; \ } -static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) -{ - return vcpu->arch.lr; +#define KVMPPC_BOOK3S_VCPU_ACCESSOR(reg, size, iden) \ + KVMPPC_BOOK3S_VCPU_ACCESSOR_SET(reg, size, iden) \ + KVMPPC_BOOK3S_VCPU_ACCESSOR_GET(reg, size, iden) \ + +KVMPPC_BOOK3S_VCPU_ACCESSOR(pid, 32, KVMPPC_GSID_PIDR) +KVMPPC_BOOK3S_VCPU_ACCESSOR(tar, 64, KVMPPC_GSID_TAR) +KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbhr, 64, KVMPPC_GSID_EBBHR) +KVMPPC_BOOK3S_VCPU_ACCESSOR(ebbrr, 64, KVMPPC_GSID_EBBRR) +KVMPPC_BOOK3S_VCPU_ACCESSOR(bescr, 64, KVMPPC_GSID_BESCR) +KVMPPC_BOOK3S_VCPU_ACCESSOR(ic, 64, KVMPPC_GSID_IC) +KVMPPC_BOOK3S_VCPU_ACCESSOR(vrsave, 64, KVMPPC_GSID_VRSAVE) + + +#define KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \ +static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ +{ \ + vcpu->arch.vcore->reg = val; \ + kvmhv_nestedv2_mark_dirty(vcpu, iden); \ } -static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) -{ - vcpu->arch.pc = val; +#define KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \ +static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ +{ \ + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ + return vcpu->arch.vcore->reg; \ } -static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) +#define KVMPPC_BOOK3S_VCORE_ACCESSOR(reg, size, iden) \ + KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(reg, size, iden) \ + KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(reg, size, iden) \ + + +KVMPPC_BOOK3S_VCORE_ACCESSOR(vtb, 64, KVMPPC_GSID_VTB) +KVMPPC_BOOK3S_VCORE_ACCESSOR(dpdes, 64, KVMPPC_GSID_DPDES) +KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(arch_compat, 32, KVMPPC_GSID_LOGICAL_PVR) +KVMPPC_BOOK3S_VCORE_ACCESSOR_GET(lpcr, 64, KVMPPC_GSID_LPCR) +KVMPPC_BOOK3S_VCORE_ACCESSOR_SET(tb_offset, 64, KVMPPC_GSID_TB_OFFSET) + +static inline u64 kvmppc_get_tb_offset(struct kvm_vcpu *vcpu) { - return vcpu->arch.pc; + return vcpu->arch.vcore->tb_offset; } -static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) +static inline u64 kvmppc_get_dec_expires(struct kvm_vcpu *vcpu) { - ulong pc = kvmppc_get_pc(vcpu); + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB) < 0); + return vcpu->arch.dec_expires; +} - /* Load the instruction manually if it failed to do so in the - * exit path */ - if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) - kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); +static inline void kvmppc_set_dec_expires(struct kvm_vcpu *vcpu, u64 val) +{ + vcpu->arch.dec_expires = val; + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_DEC_EXPIRY_TB); +} - return vcpu->arch.last_inst; +/* Expiry time of vcpu DEC relative to host TB */ +static inline u64 kvmppc_dec_expires_host_tb(struct kvm_vcpu *vcpu) +{ + return kvmppc_get_dec_expires(vcpu) - kvmppc_get_tb_offset(vcpu); } -static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) +static inline bool is_kvmppc_resume_guest(int r) { - return vcpu->arch.fault_dar; + return (r == RESUME_GUEST || r == RESUME_GUEST_NV); } -static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) +static inline bool is_kvmppc_hv_enabled(struct kvm *kvm); +static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu) { - return false; + /* Only PR KVM supports the magic page */ + return !is_kvmppc_hv_enabled(vcpu->kvm); } -#endif + +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 */ @@ -466,7 +646,54 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) /* TO = 31 for unconditional trap */ #define INS_TW 0x7fe00008 -/* LPIDs we support with this build -- runtime limit may be lower */ -#define KVMPPC_NR_LPIDS (LPID_RSVD + 1) +#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__ */ |