diff options
Diffstat (limited to 'arch/powerpc/include/asm/kvm_ppc.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 507 |
1 files changed, 354 insertions, 153 deletions
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index eb0d79f0ca45..0953f2daa466 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.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 IBM Corp. 2008 * @@ -36,7 +25,10 @@ #endif #ifdef CONFIG_KVM_BOOK3S_64_HANDLER #include <asm/paca.h> +#include <asm/xive.h> +#include <asm/cpu_has_feature.h> #endif +#include <asm/inst.h> /* * KVMPPC_INST_SW_BREAKPOINT is debug Instruction @@ -67,42 +59,42 @@ enum xlate_readwrite { XLATE_WRITE /* check for write permissions */ }; -extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); -extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); +extern int kvmppc_vcpu_run(struct kvm_vcpu *vcpu); +extern int __kvmppc_vcpu_run(struct kvm_vcpu *vcpu); extern void kvmppc_handler_highmem(void); extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); -extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_load(struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, int is_default_endian); -extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_loads(struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, int is_default_endian); -extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_vsx_load(struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, int is_default_endian, int mmio_sign_extend); -extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_vmx_load(struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, int is_default_endian); -extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_vmx_store(struct kvm_vcpu *vcpu, unsigned int rs, unsigned int bytes, int is_default_endian); -extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_store(struct kvm_vcpu *vcpu, u64 val, unsigned int bytes, int is_default_endian); -extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu, +extern int kvmppc_handle_vsx_store(struct kvm_vcpu *vcpu, int rs, unsigned int bytes, int is_default_endian); extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, - enum instruction_fetch_type type, u32 *inst); + enum instruction_fetch_type type, + unsigned long *inst); 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 int kvmppc_emulate_instruction(struct kvm_run *run, - struct kvm_vcpu *vcpu); +extern int kvmppc_emulate_instruction(struct kvm_vcpu *vcpu); extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu); -extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); +extern int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu); extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu); @@ -114,10 +106,7 @@ extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, unsigned int gtlb_idx); -extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); -extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); -extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, @@ -128,11 +117,9 @@ extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, enum xlate_readwrite xlrw, struct kvmppc_pte *pte); -extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, - unsigned int id); +extern int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu); extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); -extern int kvmppc_core_check_processor_compat(void); extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, struct kvm_translation *tr); @@ -141,40 +128,48 @@ extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); -extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); -extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu); -extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu); -extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu); + +extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, + ulong srr1_flags); +extern void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu); +extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, + ulong srr1_flags); +extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu, + ulong srr1_flags); +extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu, + ulong srr1_flags); +extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu, + ulong srr1_flags); extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); -extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags, +extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, + ulong dear_flags, ulong esr_flags); extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, - ulong dear_flags, - ulong esr_flags); + ulong srr1_flags, + ulong dar, + ulong dsisr); extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu); extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, - ulong esr_flags); + ulong srr1_flags); + extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); extern int kvmppc_booke_init(void); extern void kvmppc_booke_exit(void); -extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order); extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info); -extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); +extern int kvmppc_alloc_reset_hpt(struct kvm *kvm, int order); extern void kvmppc_free_hpt(struct kvm_hpt_info *info); extern void kvmppc_rmap_reset(struct kvm *kvm); -extern long kvmppc_prepare_vrma(struct kvm *kvm, - struct kvm_userspace_memory_region *mem); extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, struct kvm_memory_slot *memslot, unsigned long porder); extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); @@ -186,18 +181,12 @@ extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm); extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm); extern void kvmppc_setup_partition_table(struct kvm *kvm); -extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, +extern int kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, struct kvm_create_spapr_tce_64 *args); -extern struct kvmppc_spapr_tce_table *kvmppc_find_table( - struct kvm *kvm, unsigned long liobn); #define kvmppc_ioba_validate(stt, ioba, npages) \ (iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \ (stt)->size, (ioba), (npages)) ? \ H_PARAMETER : H_SUCCESS) -extern long kvmppc_tce_to_ua(struct kvm *kvm, unsigned long tce, - unsigned long *ua, unsigned long **prmap); -extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt, - unsigned long idx, unsigned long tce); extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, unsigned long ioba, unsigned long tce); extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu, @@ -213,17 +202,13 @@ extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages); extern int kvmppc_core_init_vm(struct kvm *kvm); extern void kvmppc_core_destroy_vm(struct kvm *kvm); extern void kvmppc_core_free_memslot(struct kvm *kvm, - struct kvm_memory_slot *free, - struct kvm_memory_slot *dont); -extern int kvmppc_core_create_memslot(struct kvm *kvm, - struct kvm_memory_slot *slot, - unsigned long npages); + struct kvm_memory_slot *slot); extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, - struct kvm_memory_slot *memslot, - const struct kvm_userspace_memory_region *mem); -extern void kvmppc_core_commit_memory_region(struct kvm *kvm, - const struct kvm_userspace_memory_region *mem, const struct kvm_memory_slot *old, + struct kvm_memory_slot *new, + enum kvm_mr_change change); +extern void kvmppc_core_commit_memory_region(struct kvm *kvm, + struct kvm_memory_slot *old, const struct kvm_memory_slot *new, enum kvm_mr_change change); extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, @@ -237,10 +222,10 @@ extern void kvmppc_bookehv_exit(void); extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); -extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, - struct kvm_ppc_resize_hpt *rhpt); -extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, +extern int kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm, struct kvm_ppc_resize_hpt *rhpt); +extern int kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm, + struct kvm_ppc_resize_hpt *rhpt); int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); @@ -270,6 +255,7 @@ union kvmppc_one_reg { u64 addr; u64 length; } vpaval; + u64 xive_timaval[2]; }; struct kvmppc_ops { @@ -282,41 +268,36 @@ struct kvmppc_ops { union kvmppc_one_reg *val); void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); void (*vcpu_put)(struct kvm_vcpu *vcpu); + void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); - int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); - struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); + int (*vcpu_run)(struct kvm_vcpu *vcpu); + int (*vcpu_create)(struct kvm_vcpu *vcpu); void (*vcpu_free)(struct kvm_vcpu *vcpu); int (*check_requests)(struct kvm_vcpu *vcpu); int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); int (*prepare_memory_region)(struct kvm *kvm, - struct kvm_memory_slot *memslot, - const struct kvm_userspace_memory_region *mem); - void (*commit_memory_region)(struct kvm *kvm, - const struct kvm_userspace_memory_region *mem, const struct kvm_memory_slot *old, + struct kvm_memory_slot *new, + enum kvm_mr_change change); + void (*commit_memory_region)(struct kvm *kvm, + struct kvm_memory_slot *old, const struct kvm_memory_slot *new, enum kvm_mr_change change); - int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, - unsigned long end); - int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end); - int (*test_age_hva)(struct kvm *kvm, unsigned long hva); - void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); - void (*mmu_destroy)(struct kvm_vcpu *vcpu); - void (*free_memslot)(struct kvm_memory_slot *free, - struct kvm_memory_slot *dont); - int (*create_memslot)(struct kvm_memory_slot *slot, - unsigned long npages); + bool (*unmap_gfn_range)(struct kvm *kvm, struct kvm_gfn_range *range); + bool (*age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); + bool (*test_age_gfn)(struct kvm *kvm, struct kvm_gfn_range *range); + void (*free_memslot)(struct kvm_memory_slot *slot); int (*init_vm)(struct kvm *kvm); void (*destroy_vm)(struct kvm *kvm); int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); - int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, + int (*emulate_op)(struct kvm_vcpu *vcpu, unsigned int inst, int *advance); int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); - long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, - unsigned long arg); + int (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, + unsigned long arg); int (*hcall_implemented)(unsigned long hcall); int (*irq_bypass_add_producer)(struct irq_bypass_consumer *, struct irq_bypass_producer *); @@ -332,13 +313,19 @@ struct kvmppc_ops { int size); int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, int size); + int (*enable_svm)(struct kvm *kvm); + int (*svm_off)(struct kvm *kvm); + int (*enable_dawr1)(struct kvm *kvm); + bool (*hash_v3_possible)(void); + int (*create_vm_debugfs)(struct kvm *kvm); + int (*create_vcpu_debugfs)(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry); }; extern struct kvmppc_ops *kvmppc_hv_ops; extern struct kvmppc_ops *kvmppc_pr_ops; static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, - enum instruction_fetch_type type, u32 *inst) + enum instruction_fetch_type type, ppc_inst_t *inst) { int ret = EMULATE_DONE; u32 fetched_inst; @@ -349,15 +336,30 @@ static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu, ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst); /* Write fetch_failed unswapped if the fetch failed */ - if (ret == EMULATE_DONE) - fetched_inst = kvmppc_need_byteswap(vcpu) ? - swab32(vcpu->arch.last_inst) : - vcpu->arch.last_inst; - else - fetched_inst = vcpu->arch.last_inst; + if (ret != EMULATE_DONE) { + *inst = ppc_inst(KVM_INST_FETCH_FAILED); + return ret; + } - *inst = fetched_inst; - return ret; +#ifdef CONFIG_PPC64 + /* Is this a prefixed instruction? */ + if ((vcpu->arch.last_inst >> 32) != 0) { + u32 prefix = vcpu->arch.last_inst >> 32; + u32 suffix = vcpu->arch.last_inst; + if (kvmppc_need_byteswap(vcpu)) { + prefix = swab32(prefix); + suffix = swab32(suffix); + } + *inst = ppc_inst_prefix(prefix, suffix); + return EMULATE_DONE; + } +#endif + + fetched_inst = kvmppc_need_byteswap(vcpu) ? + swab32(vcpu->arch.last_inst) : + vcpu->arch.last_inst; + *inst = ppc_inst(fetched_inst); + return EMULATE_DONE; } static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) @@ -463,9 +465,100 @@ static inline u32 kvmppc_get_xics_latch(void) return xirr; } -static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) +/* + * To avoid the need to unnecessarily exit fully to the host kernel, an IPI to + * a CPU thread that's running/napping inside of a guest is by default regarded + * as a request to wake the CPU (if needed) and continue execution within the + * guest, potentially to process new state like externally-generated + * interrupts or IPIs sent from within the guest itself (e.g. H_PROD/H_IPI). + * + * To force an exit to the host kernel, kvmppc_set_host_ipi() must be called + * prior to issuing the IPI to set the corresponding 'host_ipi' flag in the + * target CPU's PACA. To avoid unnecessary exits to the host, this flag should + * be immediately cleared via kvmppc_clear_host_ipi() by the IPI handler on + * the receiving side prior to processing the IPI work. + * + * NOTE: + * + * We currently issue an smp_mb() at the beginning of kvmppc_set_host_ipi(). + * This is to guard against sequences such as the following: + * + * CPU + * X: smp_muxed_ipi_set_message(): + * X: smp_mb() + * X: message[RESCHEDULE] = 1 + * X: doorbell_global_ipi(42): + * X: kvmppc_set_host_ipi(42) + * X: ppc_msgsnd_sync()/smp_mb() + * X: ppc_msgsnd() -> 42 + * 42: doorbell_exception(): // from CPU X + * 42: ppc_msgsync() + * 105: smp_muxed_ipi_set_message(): + * 105: smb_mb() + * // STORE DEFERRED DUE TO RE-ORDERING + * --105: message[CALL_FUNCTION] = 1 + * | 105: doorbell_global_ipi(42): + * | 105: kvmppc_set_host_ipi(42) + * | 42: kvmppc_clear_host_ipi(42) + * | 42: smp_ipi_demux_relaxed() + * | 42: // returns to executing guest + * | // RE-ORDERED STORE COMPLETES + * ->105: message[CALL_FUNCTION] = 1 + * 105: ppc_msgsnd_sync()/smp_mb() + * 105: ppc_msgsnd() -> 42 + * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored + * 105: // hangs waiting on 42 to process messages/call_single_queue + * + * We also issue an smp_mb() at the end of kvmppc_clear_host_ipi(). This is + * to guard against sequences such as the following (as well as to create + * a read-side pairing with the barrier in kvmppc_set_host_ipi()): + * + * CPU + * X: smp_muxed_ipi_set_message(): + * X: smp_mb() + * X: message[RESCHEDULE] = 1 + * X: doorbell_global_ipi(42): + * X: kvmppc_set_host_ipi(42) + * X: ppc_msgsnd_sync()/smp_mb() + * X: ppc_msgsnd() -> 42 + * 42: doorbell_exception(): // from CPU X + * 42: ppc_msgsync() + * // STORE DEFERRED DUE TO RE-ORDERING + * -- 42: kvmppc_clear_host_ipi(42) + * | 42: smp_ipi_demux_relaxed() + * | 105: smp_muxed_ipi_set_message(): + * | 105: smb_mb() + * | 105: message[CALL_FUNCTION] = 1 + * | 105: doorbell_global_ipi(42): + * | 105: kvmppc_set_host_ipi(42) + * | // RE-ORDERED STORE COMPLETES + * -> 42: kvmppc_clear_host_ipi(42) + * 42: // returns to executing guest + * 105: ppc_msgsnd_sync()/smp_mb() + * 105: ppc_msgsnd() -> 42 + * 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored + * 105: // hangs waiting on 42 to process messages/call_single_queue + */ +static inline void kvmppc_set_host_ipi(int cpu) { - paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi; + /* + * order stores of IPI messages vs. setting of host_ipi flag + * + * pairs with the barrier in kvmppc_clear_host_ipi() + */ + smp_mb(); + WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 1); +} + +static inline void kvmppc_clear_host_ipi(int cpu) +{ + WRITE_ONCE(paca_ptrs[cpu]->kvm_hstate.host_ipi, 0); + /* + * order clearing of host_ipi flag vs. processing of IPI messages + * + * pairs with the barrier in kvmppc_set_host_ipi() + */ + smp_mb(); } static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) @@ -477,6 +570,8 @@ extern void kvm_hv_vm_activated(void); extern void kvm_hv_vm_deactivated(void); extern bool kvm_hv_mode_active(void); +extern void kvmppc_check_need_tlb_flush(struct kvm *kvm, int pcpu); + #else static inline void __init kvm_cma_reserve(void) {} @@ -494,7 +589,10 @@ static inline u32 kvmppc_get_xics_latch(void) return 0; } -static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) +static inline void kvmppc_set_host_ipi(int cpu) +{} + +static inline void kvmppc_clear_host_ipi(int cpu) {} static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) @@ -506,6 +604,54 @@ static inline bool kvm_hv_mode_active(void) { return false; } #endif +#ifdef CONFIG_PPC_PSERIES +static inline bool kvmhv_on_pseries(void) +{ + return !cpu_has_feature(CPU_FTR_HVMODE); +} +#else +static inline bool kvmhv_on_pseries(void) +{ + return false; +} + +#endif + +#ifndef CONFIG_PPC_BOOK3S + +static inline bool kvmhv_is_nestedv2(void) +{ + return false; +} + +static inline bool kvmhv_is_nestedv1(void) +{ + return false; +} + +static inline int kvmhv_nestedv2_reload_ptregs(struct kvm_vcpu *vcpu, + struct pt_regs *regs) +{ + return 0; +} +static inline int kvmhv_nestedv2_mark_dirty_ptregs(struct kvm_vcpu *vcpu, + struct pt_regs *regs) +{ + return 0; +} + +static inline int kvmhv_nestedv2_mark_dirty(struct kvm_vcpu *vcpu, u16 iden) +{ + return 0; +} + +static inline int kvmhv_nestedv2_cached_reload(struct kvm_vcpu *vcpu, u16 iden) +{ + return 0; +} + +#endif + #ifdef CONFIG_KVM_XICS static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) { @@ -526,6 +672,7 @@ extern void kvmppc_free_pimap(struct kvm *kvm); extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall); extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); +extern int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req); extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, @@ -548,9 +695,9 @@ extern int h_ipi_redirect; static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap( struct kvm *kvm) { return NULL; } -static inline void kvmppc_alloc_host_rm_ops(void) {}; -static inline void kvmppc_free_host_rm_ops(void) {}; -static inline void kvmppc_free_pimap(struct kvm *kvm) {}; +static inline void kvmppc_alloc_host_rm_ops(void) {} +static inline void kvmppc_free_host_rm_ops(void) {} +static inline void kvmppc_free_pimap(struct kvm *kvm) {} static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) { return 0; } static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) @@ -558,6 +705,8 @@ static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) { return 0; } +static inline int kvmppc_xive_xics_hcall(struct kvm_vcpu *vcpu, u32 req) + { return 0; } #endif #ifdef CONFIG_KVM_XIVE @@ -575,22 +724,37 @@ extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, u32 *priority); extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq); extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq); -extern void kvmppc_xive_init_module(void); -extern void kvmppc_xive_exit_module(void); extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, u32 cpu); extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu); extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq, - struct irq_desc *host_desc); + unsigned long host_irq); extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq, - struct irq_desc *host_desc); + unsigned long host_irq); extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu); extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval); extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, bool line_status); extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu); +extern void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu); +extern bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu); + +static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.irq_type == KVMPPC_IRQ_XIVE; +} + +extern int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, + struct kvm_vcpu *vcpu, u32 cpu); +extern void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu); +extern int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, + union kvmppc_one_reg *val); +extern int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, + union kvmppc_one_reg *val); +extern bool kvmppc_xive_native_supported(void); + #else static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server, u32 priority) { return -1; } @@ -598,8 +762,6 @@ static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server, u32 *priority) { return -1; } static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; } static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; } -static inline void kvmppc_xive_init_module(void) { } -static inline void kvmppc_xive_exit_module(void) { } static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } @@ -614,8 +776,35 @@ static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { retur static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, bool line_status) { return -ENODEV; } static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { } +static inline void kvmppc_xive_pull_vcpu(struct kvm_vcpu *vcpu) { } +static inline bool kvmppc_xive_rearm_escalation(struct kvm_vcpu *vcpu) { return true; } + +static inline int kvmppc_xive_enabled(struct kvm_vcpu *vcpu) + { return 0; } +static inline int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev, + struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; } +static inline void kvmppc_xive_native_cleanup_vcpu(struct kvm_vcpu *vcpu) { } +static inline int kvmppc_xive_native_get_vp(struct kvm_vcpu *vcpu, + union kvmppc_one_reg *val) +{ return 0; } +static inline int kvmppc_xive_native_set_vp(struct kvm_vcpu *vcpu, + union kvmppc_one_reg *val) +{ return -ENOENT; } + #endif /* CONFIG_KVM_XIVE */ +#if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER) +static inline bool xics_on_xive(void) +{ + return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE); +} +#else +static inline bool xics_on_xive(void) +{ + return false; +} +#endif + /* * Prototypes for functions called only from assembler code. * Having prototypes reduces sparse errors. @@ -630,35 +819,30 @@ long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu, unsigned long tce_value, unsigned long npages); long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target, unsigned int yield_count); -long kvmppc_h_random(struct kvm_vcpu *vcpu); +long kvmppc_rm_h_random(struct kvm_vcpu *vcpu); void kvmhv_commence_exit(int trap); -long kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); +void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu); void kvmppc_subcore_enter_guest(void); void kvmppc_subcore_exit_guest(void); long kvmppc_realmode_hmi_handler(void); +long kvmppc_p9_realmode_hmi_handler(struct kvm_vcpu *vcpu); long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, long pte_index, unsigned long pteh, unsigned long ptel); long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long pte_index, unsigned long avpn); long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu); long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, - unsigned long pte_index, unsigned long avpn, - unsigned long va); + unsigned long pte_index, unsigned long avpn); long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long pte_index); long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long pte_index); long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long pte_index); +long kvmppc_rm_h_page_init(struct kvm_vcpu *vcpu, unsigned long flags, + unsigned long dest, unsigned long src); long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, unsigned long slb_v, unsigned int status, bool data); -unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu); -unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu); -unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server); -int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, - unsigned long mfrr); -int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr); -int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr); void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu); /* @@ -740,13 +924,12 @@ int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, struct kvm_dirty_tlb *cfg); long kvmppc_alloc_lpid(void); -void kvmppc_claim_lpid(long lpid); void kvmppc_free_lpid(long lpid); void kvmppc_init_lpid(unsigned long nr_lpids); static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) { - struct page *page; + struct folio *folio; /* * We can only access pages that the kernel maps * as memory. Bail out for unmapped ones. @@ -755,10 +938,10 @@ static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn) return; /* Clear i-cache for new pages */ - page = pfn_to_page(pfn); - if (!test_bit(PG_arch_1, &page->flags)) { - flush_dcache_icache_page(page); - set_bit(PG_arch_1, &page->flags); + folio = page_folio(pfn_to_page(pfn)); + if (!test_bit(PG_dcache_clean, &folio->flags.f)) { + flush_dcache_icache_folio(folio); + set_bit(PG_dcache_clean, &folio->flags.f); } } @@ -779,79 +962,85 @@ static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu) #endif } -#define SPRNG_WRAPPER_GET(reg, bookehv_spr) \ +#define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \ static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ { \ return mfspr(bookehv_spr); \ } \ -#define SPRNG_WRAPPER_SET(reg, bookehv_spr) \ +#define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \ static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \ { \ mtspr(bookehv_spr, val); \ } \ -#define SHARED_WRAPPER_GET(reg, size) \ +#define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \ static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \ { \ + if (iden) \ + WARN_ON(kvmhv_nestedv2_cached_reload(vcpu, iden) < 0); \ if (kvmppc_shared_big_endian(vcpu)) \ - return be##size##_to_cpu(vcpu->arch.shared->reg); \ + return be##size##_to_cpu((__be##size __force)vcpu->arch.shared->reg); \ else \ - return le##size##_to_cpu(vcpu->arch.shared->reg); \ + return le##size##_to_cpu((__le##size __force)vcpu->arch.shared->reg); \ } \ -#define SHARED_WRAPPER_SET(reg, size) \ +#define KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \ static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \ { \ if (kvmppc_shared_big_endian(vcpu)) \ - vcpu->arch.shared->reg = cpu_to_be##size(val); \ + vcpu->arch.shared->reg = (u##size __force)cpu_to_be##size(val); \ else \ - vcpu->arch.shared->reg = cpu_to_le##size(val); \ + vcpu->arch.shared->reg = (u##size __force)cpu_to_le##size(val); \ + \ + if (iden) \ + kvmhv_nestedv2_mark_dirty(vcpu, iden); \ } \ -#define SHARED_WRAPPER(reg, size) \ - SHARED_WRAPPER_GET(reg, size) \ - SHARED_WRAPPER_SET(reg, size) \ +#define KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \ + KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(reg, size, iden) \ + KVMPPC_VCPU_SHARED_REGS_ACCESSOR_SET(reg, size, iden) \ -#define SPRNG_WRAPPER(reg, bookehv_spr) \ - SPRNG_WRAPPER_GET(reg, bookehv_spr) \ - SPRNG_WRAPPER_SET(reg, bookehv_spr) \ +#define KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \ + KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_GET(reg, bookehv_spr) \ + KVMPPC_BOOKE_HV_SPRNG_ACCESSOR_SET(reg, bookehv_spr) \ #ifdef CONFIG_KVM_BOOKE_HV -#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ - SPRNG_WRAPPER(reg, bookehv_spr) \ +#define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \ + KVMPPC_BOOKE_HV_SPRNG_ACCESSOR(reg, bookehv_spr) \ #else -#define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr) \ - SHARED_WRAPPER(reg, size) \ +#define KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(reg, size, bookehv_spr, iden) \ + KVMPPC_VCPU_SHARED_REGS_ACCESSOR(reg, size, iden) \ #endif -SHARED_WRAPPER(critical, 64) -SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0) -SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1) -SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2) -SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3) -SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0) -SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1) -SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR) -SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR) -SHARED_WRAPPER_GET(msr, 64) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(critical, 64, 0) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg0, 64, SPRN_GSPRG0, KVMPPC_GSID_SPRG0) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg1, 64, SPRN_GSPRG1, KVMPPC_GSID_SPRG1) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg2, 64, SPRN_GSPRG2, KVMPPC_GSID_SPRG2) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(sprg3, 64, SPRN_GSPRG3, KVMPPC_GSID_SPRG3) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr0, 64, SPRN_GSRR0, KVMPPC_GSID_SRR0) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(srr1, 64, SPRN_GSRR1, KVMPPC_GSID_SRR1) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(dar, 64, SPRN_GDEAR, KVMPPC_GSID_DAR) +KVMPPC_BOOKE_HV_SPRNG_OR_VCPU_SHARED_REGS_ACCESSOR(esr, 64, SPRN_GESR, 0) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR_GET(msr, 64, KVMPPC_GSID_MSR) static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val) { if (kvmppc_shared_big_endian(vcpu)) vcpu->arch.shared->msr = cpu_to_be64(val); else vcpu->arch.shared->msr = cpu_to_le64(val); + kvmhv_nestedv2_mark_dirty(vcpu, KVMPPC_GSID_MSR); } -SHARED_WRAPPER(dsisr, 32) -SHARED_WRAPPER(int_pending, 32) -SHARED_WRAPPER(sprg4, 64) -SHARED_WRAPPER(sprg5, 64) -SHARED_WRAPPER(sprg6, 64) -SHARED_WRAPPER(sprg7, 64) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(dsisr, 32, KVMPPC_GSID_DSISR) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(int_pending, 32, 0) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg4, 64, 0) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg5, 64, 0) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg6, 64, 0) +KVMPPC_VCPU_SHARED_REGS_ACCESSOR(sprg7, 64, 0) static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr) { @@ -891,6 +1080,18 @@ static inline void kvmppc_fix_ee_before_entry(void) #endif } +static inline void kvmppc_fix_ee_after_exit(void) +{ +#ifdef CONFIG_PPC64 + /* Only need to enable IRQs by hard enabling them after this */ + local_paca->irq_happened = PACA_IRQ_HARD_DIS; + irq_soft_mask_set(IRQS_ALL_DISABLED); +#endif + + trace_hardirqs_off(); +} + + static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) { ulong ea; 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