--- zzzz-none-000/linux-3.10.107/arch/s390/kvm/kvm-s390.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/s390/kvm/kvm-s390.h 2021-02-04 17:41:59.000000000 +0000 @@ -18,16 +18,21 @@ #include #include #include - -/* The current code can have up to 256 pages for virtio */ -#define VIRTIODESCSPACE (256ul * 4096ul) +#include typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); -/* negativ values are error codes, positive values for internal conditions */ -#define SIE_INTERCEPT_RERUNVCPU (1<<0) -#define SIE_INTERCEPT_UCONTROL (1<<1) -int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); +/* Transactional Memory Execution related macros */ +#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10)) +#define TDB_FORMAT1 1 +#define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1)) + +extern debug_info_t *kvm_s390_dbf; +#define KVM_EVENT(d_loglevel, d_string, d_args...)\ +do { \ + debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \ + d_args); \ +} while (0) #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ do { \ @@ -43,9 +48,9 @@ d_args); \ } while (0) -static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) +static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu) { - return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; + return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED; } static inline int kvm_is_ucontrol(struct kvm *kvm) @@ -59,22 +64,37 @@ #endif } +#define GUEST_PREFIX_SHIFT 13 +static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT; +} + static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) { - vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u; - vcpu->arch.sie_block->ihcpu = 0xffff; + VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id, + prefix); + vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; + kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); + kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); } -static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu) +typedef u8 __bitwise ar_t; + +static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); + if (ar) + *ar = base2; + return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; } static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, - u64 *address1, u64 *address2) + u64 *address1, u64 *address2, + ar_t *ar_b1, ar_t *ar_b2) { u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; @@ -83,9 +103,22 @@ *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; + + if (ar_b1) + *ar_b1 = base1; + if (ar_b2) + *ar_b2 = base2; +} + +static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) +{ + if (r1) + *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; + if (r2) + *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; } -static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu) +static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + @@ -94,46 +127,217 @@ if (disp2 & 0x80000) disp2+=0xfff00000; + if (ar) + *ar = base2; + return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; } -static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu) +static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); + if (ar) + *ar = base2; + return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; } +/* Set the condition code in the guest program status word */ +static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) +{ + vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); + vcpu->arch.sie_block->gpsw.mask |= cc << 44; +} + +/* test availability of facility in a kvm instance */ +static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr) +{ + return __test_facility(nr, kvm->arch.model.fac->mask) && + __test_facility(nr, kvm->arch.model.fac->list); +} + +static inline int set_kvm_facility(u64 *fac_list, unsigned long nr) +{ + unsigned char *ptr; + + if (nr >= MAX_FACILITY_BIT) + return -EINVAL; + ptr = (unsigned char *) fac_list + (nr >> 3); + *ptr |= (0x80UL >> (nr & 7)); + return 0; +} + +/* are cpu states controlled by user space */ +static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm) +{ + return kvm->arch.user_cpu_state_ctrl != 0; +} + +/* implemented in interrupt.c */ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); -void kvm_s390_tasklet(unsigned long parm); -void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); -void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu); +int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); +void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); +void kvm_s390_clear_float_irqs(struct kvm *kvm); int __must_check kvm_s390_inject_vm(struct kvm *kvm, struct kvm_s390_interrupt *s390int); int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, - struct kvm_s390_interrupt *s390int); -int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); -int __must_check kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); + struct kvm_s390_irq *irq); +static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, + struct kvm_s390_pgm_info *pgm_info) +{ + struct kvm_s390_irq irq = { + .type = KVM_S390_PROGRAM_INT, + .u.pgm = *pgm_info, + }; + + return kvm_s390_inject_vcpu(vcpu, &irq); +} +static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code) +{ + struct kvm_s390_irq irq = { + .type = KVM_S390_PROGRAM_INT, + .u.pgm.code = code, + }; + + return kvm_s390_inject_vcpu(vcpu, &irq); +} struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, - u64 cr6, u64 schid); + u64 isc_mask, u32 schid); +int kvm_s390_reinject_io_int(struct kvm *kvm, + struct kvm_s390_interrupt_info *inti); +int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); + +/* implemented in intercept.c */ +void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc); +int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); /* implemented in priv.c */ +int is_valid_psw(psw_t *psw); int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); int kvm_s390_handle_01(struct kvm_vcpu *vcpu); int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); -int kvm_s390_handle_priv_eb(struct kvm_vcpu *vcpu); +int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); +int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); +int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); /* implemented in sigp.c */ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); +int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); /* implemented in kvm-s390.c */ -int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, - unsigned long addr); +void kvm_s390_set_tod_clock(struct kvm *kvm, u64 tod); +long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable); +int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); +int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu, + unsigned long addr); +int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); +int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr); +void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); +void exit_sie(struct kvm_vcpu *vcpu); +void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); +int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); +void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); +unsigned long kvm_s390_fac_list_mask_size(void); +extern unsigned long kvm_s390_fac_list_mask[]; + /* implemented in diag.c */ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); +static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) +{ + int i; + struct kvm_vcpu *vcpu; + + WARN_ON(!mutex_is_locked(&kvm->lock)); + kvm_for_each_vcpu(i, vcpu, kvm) + kvm_s390_vcpu_block(vcpu); +} + +static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) +{ + int i; + struct kvm_vcpu *vcpu; + + kvm_for_each_vcpu(i, vcpu, kvm) + kvm_s390_vcpu_unblock(vcpu); +} + +static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) +{ + u64 rc; + + preempt_disable(); + rc = get_tod_clock_fast() + kvm->arch.epoch; + preempt_enable(); + return rc; +} + +/** + * kvm_s390_inject_prog_cond - conditionally inject a program check + * @vcpu: virtual cpu + * @rc: original return/error code + * + * This function is supposed to be used after regular guest access functions + * failed, to conditionally inject a program check to a vcpu. The typical + * pattern would look like + * + * rc = write_guest(vcpu, addr, data, len); + * if (rc) + * return kvm_s390_inject_prog_cond(vcpu, rc); + * + * A negative return code from guest access functions implies an internal error + * like e.g. out of memory. In these cases no program check should be injected + * to the guest. + * A positive value implies that an exception happened while accessing a guest's + * memory. In this case all data belonging to the corresponding program check + * has been stored in vcpu->arch.pgm and can be injected with + * kvm_s390_inject_prog_irq(). + * + * Returns: - the original @rc value if @rc was negative (internal error) + * - zero if @rc was already zero + * - zero or error code from injecting if @rc was positive + * (program check injected to @vcpu) + */ +static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) +{ + if (rc <= 0) + return rc; + return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); +} + +int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, + struct kvm_s390_irq *s390irq); + +/* implemented in interrupt.c */ +int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); +int psw_extint_disabled(struct kvm_vcpu *vcpu); +void kvm_s390_destroy_adapters(struct kvm *kvm); +int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); +extern struct kvm_device_ops kvm_flic_ops; +int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); +void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); +int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, + void __user *buf, int len); +int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, + __u8 __user *buf, int len); + +/* implemented in guestdbg.c */ +void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); +void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); +void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); +int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg); +void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); +void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); +void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); + #endif