X-Git-Url: http://drtracing.org/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fs390%2Fkvm%2Fkvm-s390.c;h=0c362392756310e1ce0e2da8e35c6bedb5cf0849;hb=658b6eda2042c0fe0e3f8acd7ffd11fc6f280119;hp=6b049ee75a5694d74cce4f6402b92ae7879f8c4e;hpb=a643fc7253261be2275c02cb33fa7bf4bfc8cdc4;p=deliverable%2Flinux.git diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 6b049ee75a56..0c3623927563 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -29,7 +30,6 @@ #include #include #include -#include #include #include "kvm-s390.h" #include "gaccess.h" @@ -50,6 +50,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "exit_instruction", VCPU_STAT(exit_instruction) }, { "exit_program_interruption", VCPU_STAT(exit_program_interruption) }, { "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) }, + { "halt_successful_poll", VCPU_STAT(halt_successful_poll) }, { "halt_wakeup", VCPU_STAT(halt_wakeup) }, { "instruction_lctlg", VCPU_STAT(instruction_lctlg) }, { "instruction_lctl", VCPU_STAT(instruction_lctl) }, @@ -81,25 +82,37 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "instruction_sigp_sense_running", VCPU_STAT(instruction_sigp_sense_running) }, { "instruction_sigp_external_call", VCPU_STAT(instruction_sigp_external_call) }, { "instruction_sigp_emergency", VCPU_STAT(instruction_sigp_emergency) }, + { "instruction_sigp_cond_emergency", VCPU_STAT(instruction_sigp_cond_emergency) }, + { "instruction_sigp_start", VCPU_STAT(instruction_sigp_start) }, { "instruction_sigp_stop", VCPU_STAT(instruction_sigp_stop) }, + { "instruction_sigp_stop_store_status", VCPU_STAT(instruction_sigp_stop_store_status) }, + { "instruction_sigp_store_status", VCPU_STAT(instruction_sigp_store_status) }, { "instruction_sigp_set_arch", VCPU_STAT(instruction_sigp_arch) }, { "instruction_sigp_set_prefix", VCPU_STAT(instruction_sigp_prefix) }, { "instruction_sigp_restart", VCPU_STAT(instruction_sigp_restart) }, + { "instruction_sigp_cpu_reset", VCPU_STAT(instruction_sigp_cpu_reset) }, + { "instruction_sigp_init_cpu_reset", VCPU_STAT(instruction_sigp_init_cpu_reset) }, + { "instruction_sigp_unknown", VCPU_STAT(instruction_sigp_unknown) }, { "diagnose_10", VCPU_STAT(diagnose_10) }, { "diagnose_44", VCPU_STAT(diagnose_44) }, { "diagnose_9c", VCPU_STAT(diagnose_9c) }, { NULL } }; -unsigned long *vfacilities; -static struct gmap_notifier gmap_notifier; +/* upper facilities limit for kvm */ +unsigned long kvm_s390_fac_list_mask[] = { + 0xff82fffbf4fc2000UL, + 0x005c000000000000UL, +}; -/* test availability of vfacility */ -int test_vfacility(unsigned long nr) +unsigned long kvm_s390_fac_list_mask_size(void) { - return __test_facility(nr, (void *) vfacilities); + BUILD_BUG_ON(ARRAY_SIZE(kvm_s390_fac_list_mask) > S390_ARCH_FAC_MASK_SIZE_U64); + return ARRAY_SIZE(kvm_s390_fac_list_mask); } +static struct gmap_notifier gmap_notifier; + /* Section: not file related */ int kvm_arch_hardware_enable(void) { @@ -159,6 +172,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_S390_IRQCHIP: case KVM_CAP_VM_ATTRIBUTES: case KVM_CAP_MP_STATE: + case KVM_CAP_S390_USER_SIGP: r = 1; break; case KVM_CAP_NR_VCPUS: @@ -247,6 +261,10 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) kvm->arch.use_irqchip = 1; r = 0; break; + case KVM_CAP_S390_USER_SIGP: + kvm->arch.user_sigp = 1; + r = 0; + break; default: r = -EINVAL; break; @@ -254,7 +272,24 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap) return r; } -static int kvm_s390_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) +static int kvm_s390_get_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) +{ + int ret; + + switch (attr->attr) { + case KVM_S390_VM_MEM_LIMIT_SIZE: + ret = 0; + if (put_user(kvm->arch.gmap->asce_end, (u64 __user *)attr->addr)) + ret = -EFAULT; + break; + default: + ret = -ENXIO; + break; + } + return ret; +} + +static int kvm_s390_set_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) { int ret; unsigned int idx; @@ -276,6 +311,142 @@ static int kvm_s390_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) mutex_unlock(&kvm->lock); ret = 0; break; + case KVM_S390_VM_MEM_LIMIT_SIZE: { + unsigned long new_limit; + + if (kvm_is_ucontrol(kvm)) + return -EINVAL; + + if (get_user(new_limit, (u64 __user *)attr->addr)) + return -EFAULT; + + if (new_limit > kvm->arch.gmap->asce_end) + return -E2BIG; + + ret = -EBUSY; + mutex_lock(&kvm->lock); + if (atomic_read(&kvm->online_vcpus) == 0) { + /* gmap_alloc will round the limit up */ + struct gmap *new = gmap_alloc(current->mm, new_limit); + + if (!new) { + ret = -ENOMEM; + } else { + gmap_free(kvm->arch.gmap); + new->private = kvm; + kvm->arch.gmap = new; + ret = 0; + } + } + mutex_unlock(&kvm->lock); + break; + } + default: + ret = -ENXIO; + break; + } + return ret; +} + +static void kvm_s390_vcpu_crypto_setup(struct kvm_vcpu *vcpu); + +static int kvm_s390_vm_set_crypto(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_vcpu *vcpu; + int i; + + if (!test_kvm_facility(kvm, 76)) + return -EINVAL; + + mutex_lock(&kvm->lock); + switch (attr->attr) { + case KVM_S390_VM_CRYPTO_ENABLE_AES_KW: + get_random_bytes( + kvm->arch.crypto.crycb->aes_wrapping_key_mask, + sizeof(kvm->arch.crypto.crycb->aes_wrapping_key_mask)); + kvm->arch.crypto.aes_kw = 1; + break; + case KVM_S390_VM_CRYPTO_ENABLE_DEA_KW: + get_random_bytes( + kvm->arch.crypto.crycb->dea_wrapping_key_mask, + sizeof(kvm->arch.crypto.crycb->dea_wrapping_key_mask)); + kvm->arch.crypto.dea_kw = 1; + break; + case KVM_S390_VM_CRYPTO_DISABLE_AES_KW: + kvm->arch.crypto.aes_kw = 0; + memset(kvm->arch.crypto.crycb->aes_wrapping_key_mask, 0, + sizeof(kvm->arch.crypto.crycb->aes_wrapping_key_mask)); + break; + case KVM_S390_VM_CRYPTO_DISABLE_DEA_KW: + kvm->arch.crypto.dea_kw = 0; + memset(kvm->arch.crypto.crycb->dea_wrapping_key_mask, 0, + sizeof(kvm->arch.crypto.crycb->dea_wrapping_key_mask)); + break; + default: + mutex_unlock(&kvm->lock); + return -ENXIO; + } + + kvm_for_each_vcpu(i, vcpu, kvm) { + kvm_s390_vcpu_crypto_setup(vcpu); + exit_sie(vcpu); + } + mutex_unlock(&kvm->lock); + return 0; +} + +static int kvm_s390_set_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) +{ + u8 gtod_high; + + if (copy_from_user(>od_high, (void __user *)attr->addr, + sizeof(gtod_high))) + return -EFAULT; + + if (gtod_high != 0) + return -EINVAL; + + return 0; +} + +static int kvm_s390_set_tod_low(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_vcpu *cur_vcpu; + unsigned int vcpu_idx; + u64 host_tod, gtod; + int r; + + if (copy_from_user(>od, (void __user *)attr->addr, sizeof(gtod))) + return -EFAULT; + + r = store_tod_clock(&host_tod); + if (r) + return r; + + mutex_lock(&kvm->lock); + kvm->arch.epoch = gtod - host_tod; + kvm_for_each_vcpu(vcpu_idx, cur_vcpu, kvm) { + cur_vcpu->arch.sie_block->epoch = kvm->arch.epoch; + exit_sie(cur_vcpu); + } + mutex_unlock(&kvm->lock); + return 0; +} + +static int kvm_s390_set_tod(struct kvm *kvm, struct kvm_device_attr *attr) +{ + int ret; + + if (attr->flags) + return -EINVAL; + + switch (attr->attr) { + case KVM_S390_VM_TOD_HIGH: + ret = kvm_s390_set_tod_high(kvm, attr); + break; + case KVM_S390_VM_TOD_LOW: + ret = kvm_s390_set_tod_low(kvm, attr); + break; default: ret = -ENXIO; break; @@ -283,13 +454,170 @@ static int kvm_s390_mem_control(struct kvm *kvm, struct kvm_device_attr *attr) return ret; } +static int kvm_s390_get_tod_high(struct kvm *kvm, struct kvm_device_attr *attr) +{ + u8 gtod_high = 0; + + if (copy_to_user((void __user *)attr->addr, >od_high, + sizeof(gtod_high))) + return -EFAULT; + + return 0; +} + +static int kvm_s390_get_tod_low(struct kvm *kvm, struct kvm_device_attr *attr) +{ + u64 host_tod, gtod; + int r; + + r = store_tod_clock(&host_tod); + if (r) + return r; + + gtod = host_tod + kvm->arch.epoch; + if (copy_to_user((void __user *)attr->addr, >od, sizeof(gtod))) + return -EFAULT; + + return 0; +} + +static int kvm_s390_get_tod(struct kvm *kvm, struct kvm_device_attr *attr) +{ + int ret; + + if (attr->flags) + return -EINVAL; + + switch (attr->attr) { + case KVM_S390_VM_TOD_HIGH: + ret = kvm_s390_get_tod_high(kvm, attr); + break; + case KVM_S390_VM_TOD_LOW: + ret = kvm_s390_get_tod_low(kvm, attr); + break; + default: + ret = -ENXIO; + break; + } + return ret; +} + +static int kvm_s390_set_processor(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_vm_cpu_processor *proc; + int ret = 0; + + mutex_lock(&kvm->lock); + if (atomic_read(&kvm->online_vcpus)) { + ret = -EBUSY; + goto out; + } + proc = kzalloc(sizeof(*proc), GFP_KERNEL); + if (!proc) { + ret = -ENOMEM; + goto out; + } + if (!copy_from_user(proc, (void __user *)attr->addr, + sizeof(*proc))) { + memcpy(&kvm->arch.model.cpu_id, &proc->cpuid, + sizeof(struct cpuid)); + kvm->arch.model.ibc = proc->ibc; + memcpy(kvm->arch.model.fac->kvm, proc->fac_list, + S390_ARCH_FAC_LIST_SIZE_BYTE); + } else + ret = -EFAULT; + kfree(proc); +out: + mutex_unlock(&kvm->lock); + return ret; +} + +static int kvm_s390_set_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr) +{ + int ret = -ENXIO; + + switch (attr->attr) { + case KVM_S390_VM_CPU_PROCESSOR: + ret = kvm_s390_set_processor(kvm, attr); + break; + } + return ret; +} + +static int kvm_s390_get_processor(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_vm_cpu_processor *proc; + int ret = 0; + + proc = kzalloc(sizeof(*proc), GFP_KERNEL); + if (!proc) { + ret = -ENOMEM; + goto out; + } + memcpy(&proc->cpuid, &kvm->arch.model.cpu_id, sizeof(struct cpuid)); + proc->ibc = kvm->arch.model.ibc; + memcpy(&proc->fac_list, kvm->arch.model.fac->kvm, S390_ARCH_FAC_LIST_SIZE_BYTE); + if (copy_to_user((void __user *)attr->addr, proc, sizeof(*proc))) + ret = -EFAULT; + kfree(proc); +out: + return ret; +} + +static int kvm_s390_get_machine(struct kvm *kvm, struct kvm_device_attr *attr) +{ + struct kvm_s390_vm_cpu_machine *mach; + int ret = 0; + + mach = kzalloc(sizeof(*mach), GFP_KERNEL); + if (!mach) { + ret = -ENOMEM; + goto out; + } + get_cpu_id((struct cpuid *) &mach->cpuid); + mach->ibc = sclp_get_ibc(); + memcpy(&mach->fac_mask, kvm_s390_fac_list_mask, + kvm_s390_fac_list_mask_size() * sizeof(u64)); + memcpy((unsigned long *)&mach->fac_list, S390_lowcore.stfle_fac_list, + S390_ARCH_FAC_LIST_SIZE_U64); + if (copy_to_user((void __user *)attr->addr, mach, sizeof(*mach))) + ret = -EFAULT; + kfree(mach); +out: + return ret; +} + +static int kvm_s390_get_cpu_model(struct kvm *kvm, struct kvm_device_attr *attr) +{ + int ret = -ENXIO; + + switch (attr->attr) { + case KVM_S390_VM_CPU_PROCESSOR: + ret = kvm_s390_get_processor(kvm, attr); + break; + case KVM_S390_VM_CPU_MACHINE: + ret = kvm_s390_get_machine(kvm, attr); + break; + } + return ret; +} + static int kvm_s390_vm_set_attr(struct kvm *kvm, struct kvm_device_attr *attr) { int ret; switch (attr->group) { case KVM_S390_VM_MEM_CTRL: - ret = kvm_s390_mem_control(kvm, attr); + ret = kvm_s390_set_mem_control(kvm, attr); + break; + case KVM_S390_VM_TOD: + ret = kvm_s390_set_tod(kvm, attr); + break; + case KVM_S390_VM_CPU_MODEL: + ret = kvm_s390_set_cpu_model(kvm, attr); + break; + case KVM_S390_VM_CRYPTO: + ret = kvm_s390_vm_set_crypto(kvm, attr); break; default: ret = -ENXIO; @@ -301,7 +629,24 @@ static int kvm_s390_vm_set_attr(struct kvm *kvm, struct kvm_device_attr *attr) static int kvm_s390_vm_get_attr(struct kvm *kvm, struct kvm_device_attr *attr) { - return -ENXIO; + int ret; + + switch (attr->group) { + case KVM_S390_VM_MEM_CTRL: + ret = kvm_s390_get_mem_control(kvm, attr); + break; + case KVM_S390_VM_TOD: + ret = kvm_s390_get_tod(kvm, attr); + break; + case KVM_S390_VM_CPU_MODEL: + ret = kvm_s390_get_cpu_model(kvm, attr); + break; + default: + ret = -ENXIO; + break; + } + + return ret; } static int kvm_s390_vm_has_attr(struct kvm *kvm, struct kvm_device_attr *attr) @@ -313,6 +658,42 @@ static int kvm_s390_vm_has_attr(struct kvm *kvm, struct kvm_device_attr *attr) switch (attr->attr) { case KVM_S390_VM_MEM_ENABLE_CMMA: case KVM_S390_VM_MEM_CLR_CMMA: + case KVM_S390_VM_MEM_LIMIT_SIZE: + ret = 0; + break; + default: + ret = -ENXIO; + break; + } + break; + case KVM_S390_VM_TOD: + switch (attr->attr) { + case KVM_S390_VM_TOD_LOW: + case KVM_S390_VM_TOD_HIGH: + ret = 0; + break; + default: + ret = -ENXIO; + break; + } + break; + case KVM_S390_VM_CPU_MODEL: + switch (attr->attr) { + case KVM_S390_VM_CPU_PROCESSOR: + case KVM_S390_VM_CPU_MACHINE: + ret = 0; + break; + default: + ret = -ENXIO; + break; + } + break; + case KVM_S390_VM_CRYPTO: + switch (attr->attr) { + case KVM_S390_VM_CRYPTO_ENABLE_AES_KW: + case KVM_S390_VM_CRYPTO_ENABLE_DEA_KW: + case KVM_S390_VM_CRYPTO_DISABLE_AES_KW: + case KVM_S390_VM_CRYPTO_DISABLE_DEA_KW: ret = 0; break; default: @@ -394,9 +775,61 @@ long kvm_arch_vm_ioctl(struct file *filp, return r; } +static int kvm_s390_query_ap_config(u8 *config) +{ + u32 fcn_code = 0x04000000UL; + u32 cc; + + asm volatile( + "lgr 0,%1\n" + "lgr 2,%2\n" + ".long 0xb2af0000\n" /* PQAP(QCI) */ + "ipm %0\n" + "srl %0,28\n" + : "=r" (cc) + : "r" (fcn_code), "r" (config) + : "cc", "0", "2", "memory" + ); + + return cc; +} + +static int kvm_s390_apxa_installed(void) +{ + u8 config[128]; + int cc; + + if (test_facility(2) && test_facility(12)) { + cc = kvm_s390_query_ap_config(config); + + if (cc) + pr_err("PQAP(QCI) failed with cc=%d", cc); + else + return config[0] & 0x40; + } + + return 0; +} + +static void kvm_s390_set_crycb_format(struct kvm *kvm) +{ + kvm->arch.crypto.crycbd = (__u32)(unsigned long) kvm->arch.crypto.crycb; + + if (kvm_s390_apxa_installed()) + kvm->arch.crypto.crycbd |= CRYCB_FORMAT2; + else + kvm->arch.crypto.crycbd |= CRYCB_FORMAT1; +} + +static void kvm_s390_get_cpu_id(struct cpuid *cpu_id) +{ + get_cpu_id(cpu_id); + cpu_id->version = 0xff; +} + static int kvm_s390_crypto_init(struct kvm *kvm) { - if (!test_vfacility(76)) + if (!test_kvm_facility(kvm, 76)) return 0; kvm->arch.crypto.crycb = kzalloc(sizeof(*kvm->arch.crypto.crycb), @@ -404,15 +837,18 @@ static int kvm_s390_crypto_init(struct kvm *kvm) if (!kvm->arch.crypto.crycb) return -ENOMEM; - kvm->arch.crypto.crycbd = (__u32) (unsigned long) kvm->arch.crypto.crycb | - CRYCB_FORMAT1; + kvm_s390_set_crycb_format(kvm); + + /* Disable AES/DEA protected key functions by default */ + kvm->arch.crypto.aes_kw = 0; + kvm->arch.crypto.dea_kw = 0; return 0; } int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { - int rc; + int i, rc; char debug_name[16]; static unsigned long sca_offset; @@ -447,12 +883,53 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) if (!kvm->arch.dbf) goto out_nodbf; + /* + * The architectural maximum amount of facilities is 16 kbit. To store + * this amount, 2 kbyte of memory is required. Thus we need a full + * page to hold the active copy (arch.model.fac->sie) and the current + * facilities set (arch.model.fac->kvm). Its address size has to be + * 31 bits and word aligned. + */ + kvm->arch.model.fac = + (struct s390_model_fac *) get_zeroed_page(GFP_KERNEL | GFP_DMA); + if (!kvm->arch.model.fac) + goto out_nofac; + + memcpy(kvm->arch.model.fac->kvm, S390_lowcore.stfle_fac_list, + S390_ARCH_FAC_LIST_SIZE_U64); + + /* + * If this KVM host runs *not* in a LPAR, relax the facility bits + * of the kvm facility mask by all missing facilities. This will allow + * to determine the right CPU model by means of the remaining facilities. + * Live guest migration must prohibit the migration of KVMs running in + * a LPAR to non LPAR hosts. + */ + if (!MACHINE_IS_LPAR) + for (i = 0; i < kvm_s390_fac_list_mask_size(); i++) + kvm_s390_fac_list_mask[i] &= kvm->arch.model.fac->kvm[i]; + + /* + * Apply the kvm facility mask to limit the kvm supported/tolerated + * facility list. + */ + for (i = 0; i < S390_ARCH_FAC_LIST_SIZE_U64; i++) { + if (i < kvm_s390_fac_list_mask_size()) + kvm->arch.model.fac->kvm[i] &= kvm_s390_fac_list_mask[i]; + else + kvm->arch.model.fac->kvm[i] = 0UL; + } + + kvm_s390_get_cpu_id(&kvm->arch.model.cpu_id); + kvm->arch.model.ibc = sclp_get_ibc() & 0x0fff; + if (kvm_s390_crypto_init(kvm) < 0) goto out_crypto; spin_lock_init(&kvm->arch.float_int.lock); INIT_LIST_HEAD(&kvm->arch.float_int.list); init_waitqueue_head(&kvm->arch.ipte_wq); + mutex_init(&kvm->arch.ipte_mutex); debug_register_view(kvm->arch.dbf, &debug_sprintf_view); VM_EVENT(kvm, 3, "%s", "vm created"); @@ -469,6 +946,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) kvm->arch.css_support = 0; kvm->arch.use_irqchip = 0; + kvm->arch.epoch = 0; spin_lock_init(&kvm->arch.start_stop_lock); @@ -476,6 +954,8 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) out_nogmap: kfree(kvm->arch.crypto.crycb); out_crypto: + free_page((unsigned long)kvm->arch.model.fac); +out_nofac: debug_unregister(kvm->arch.dbf); out_nodbf: free_page((unsigned long)(kvm->arch.sca)); @@ -528,6 +1008,7 @@ static void kvm_free_vcpus(struct kvm *kvm) void kvm_arch_destroy_vm(struct kvm *kvm) { kvm_free_vcpus(kvm); + free_page((unsigned long)kvm->arch.model.fac); free_page((unsigned long)(kvm->arch.sca)); debug_unregister(kvm->arch.dbf); kfree(kvm->arch.crypto.crycb); @@ -538,25 +1019,30 @@ void kvm_arch_destroy_vm(struct kvm *kvm) } /* Section: vcpu related */ +static int __kvm_ucontrol_vcpu_init(struct kvm_vcpu *vcpu) +{ + vcpu->arch.gmap = gmap_alloc(current->mm, -1UL); + if (!vcpu->arch.gmap) + return -ENOMEM; + vcpu->arch.gmap->private = vcpu->kvm; + + return 0; +} + int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) { vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; kvm_clear_async_pf_completion_queue(vcpu); - if (kvm_is_ucontrol(vcpu->kvm)) { - vcpu->arch.gmap = gmap_alloc(current->mm, -1UL); - if (!vcpu->arch.gmap) - return -ENOMEM; - vcpu->arch.gmap->private = vcpu->kvm; - return 0; - } - - vcpu->arch.gmap = vcpu->kvm->arch.gmap; vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX | KVM_SYNC_GPRS | KVM_SYNC_ACRS | KVM_SYNC_CRS | KVM_SYNC_ARCH0 | KVM_SYNC_PFAULT; + + if (kvm_is_ucontrol(vcpu->kvm)) + return __kvm_ucontrol_vcpu_init(vcpu); + return 0; } @@ -607,16 +1093,27 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) kvm_s390_clear_local_irqs(vcpu); } -int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) +void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) { - return 0; + mutex_lock(&vcpu->kvm->lock); + vcpu->arch.sie_block->epoch = vcpu->kvm->arch.epoch; + mutex_unlock(&vcpu->kvm->lock); + if (!kvm_is_ucontrol(vcpu->kvm)) + vcpu->arch.gmap = vcpu->kvm->arch.gmap; } static void kvm_s390_vcpu_crypto_setup(struct kvm_vcpu *vcpu) { - if (!test_vfacility(76)) + if (!test_kvm_facility(vcpu->kvm, 76)) return; + vcpu->arch.sie_block->ecb3 &= ~(ECB3_AES | ECB3_DEA); + + if (vcpu->kvm->arch.crypto.aes_kw) + vcpu->arch.sie_block->ecb3 |= ECB3_AES; + if (vcpu->kvm->arch.crypto.dea_kw) + vcpu->arch.sie_block->ecb3 |= ECB3_DEA; + vcpu->arch.sie_block->crycbd = vcpu->kvm->arch.crypto.crycbd; } @@ -646,14 +1143,15 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) CPUSTAT_STOPPED | CPUSTAT_GED); vcpu->arch.sie_block->ecb = 6; - if (test_vfacility(50) && test_vfacility(73)) + if (test_kvm_facility(vcpu->kvm, 50) && test_kvm_facility(vcpu->kvm, 73)) vcpu->arch.sie_block->ecb |= 0x10; vcpu->arch.sie_block->ecb2 = 8; - vcpu->arch.sie_block->eca = 0xD1002000U; + vcpu->arch.sie_block->eca = 0xC1002000U; if (sclp_has_siif()) vcpu->arch.sie_block->eca |= 1; - vcpu->arch.sie_block->fac = (int) (long) vfacilities; + if (sclp_has_sigpif()) + vcpu->arch.sie_block->eca |= 0x10000000U; vcpu->arch.sie_block->ictl |= ICTL_ISKE | ICTL_SSKE | ICTL_RRBE | ICTL_TPROT; @@ -662,10 +1160,15 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) if (rc) return rc; } - hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); + hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup; - get_cpu_id(&vcpu->arch.cpu_id); - vcpu->arch.cpu_id.version = 0xff; + + mutex_lock(&vcpu->kvm->lock); + vcpu->arch.cpu_id = vcpu->kvm->arch.model.cpu_id; + memcpy(vcpu->kvm->arch.model.fac->sie, vcpu->kvm->arch.model.fac->kvm, + S390_ARCH_FAC_LIST_SIZE_BYTE); + vcpu->arch.sie_block->ibc = vcpu->kvm->arch.model.ibc; + mutex_unlock(&vcpu->kvm->lock); kvm_s390_vcpu_crypto_setup(vcpu); @@ -709,9 +1212,9 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, vcpu->arch.sie_block->scaol = (__u32)(__u64)kvm->arch.sca; set_bit(63 - id, (unsigned long *) &kvm->arch.sca->mcn); } + vcpu->arch.sie_block->fac = (int) (long) kvm->arch.model.fac->sie; spin_lock_init(&vcpu->arch.local_int.lock); - INIT_LIST_HEAD(&vcpu->arch.local_int.list); vcpu->arch.local_int.float_int = &kvm->arch.float_int; vcpu->arch.local_int.wq = &vcpu->wq; vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags; @@ -734,7 +1237,7 @@ out: int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) { - return kvm_cpu_has_interrupt(vcpu); + return kvm_s390_vcpu_has_irq(vcpu, 0); } void s390_vcpu_block(struct kvm_vcpu *vcpu) @@ -862,6 +1365,8 @@ static int kvm_arch_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, case KVM_REG_S390_PFTOKEN: r = get_user(vcpu->arch.pfault_token, (u64 __user *)reg->addr); + if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) + kvm_clear_async_pf_completion_queue(vcpu); break; case KVM_REG_S390_PFCOMPARE: r = get_user(vcpu->arch.pfault_compare, @@ -1114,13 +1619,15 @@ static void __kvm_inject_pfault_token(struct kvm_vcpu *vcpu, bool start_token, unsigned long token) { struct kvm_s390_interrupt inti; - inti.parm64 = token; + struct kvm_s390_irq irq; if (start_token) { - inti.type = KVM_S390_INT_PFAULT_INIT; - WARN_ON_ONCE(kvm_s390_inject_vcpu(vcpu, &inti)); + irq.u.ext.ext_params2 = token; + irq.type = KVM_S390_INT_PFAULT_INIT; + WARN_ON_ONCE(kvm_s390_inject_vcpu(vcpu, &irq)); } else { inti.type = KVM_S390_INT_PFAULT_DONE; + inti.parm64 = token; WARN_ON_ONCE(kvm_s390_inject_vm(vcpu->kvm, &inti)); } } @@ -1167,7 +1674,7 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu) return 0; if (psw_extint_disabled(vcpu)) return 0; - if (kvm_cpu_has_interrupt(vcpu)) + if (kvm_s390_vcpu_has_irq(vcpu, 0)) return 0; if (!(vcpu->arch.sie_block->gcr[0] & 0x200ul)) return 0; @@ -1332,6 +1839,8 @@ static void sync_regs(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) vcpu->arch.pfault_token = kvm_run->s.regs.pft; vcpu->arch.pfault_select = kvm_run->s.regs.pfs; vcpu->arch.pfault_compare = kvm_run->s.regs.pfc; + if (vcpu->arch.pfault_token == KVM_S390_PFAULT_TOKEN_INVALID) + kvm_clear_async_pf_completion_queue(vcpu); } kvm_run->kvm_dirty_regs = 0; } @@ -1550,15 +2059,10 @@ void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu) spin_lock(&vcpu->kvm->arch.start_stop_lock); online_vcpus = atomic_read(&vcpu->kvm->online_vcpus); - /* Need to lock access to action_bits to avoid a SIGP race condition */ - spin_lock(&vcpu->arch.local_int.lock); - atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); - /* SIGP STOP and SIGP STOP AND STORE STATUS has been fully processed */ - vcpu->arch.local_int.action_bits &= - ~(ACTION_STOP_ON_STOP | ACTION_STORE_ON_STOP); - spin_unlock(&vcpu->arch.local_int.lock); + kvm_s390_clear_stop_irq(vcpu); + atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); __disable_ibs_on_vcpu(vcpu); for (i = 0; i < online_vcpus; i++) { @@ -1614,11 +2118,14 @@ long kvm_arch_vcpu_ioctl(struct file *filp, switch (ioctl) { case KVM_S390_INTERRUPT: { struct kvm_s390_interrupt s390int; + struct kvm_s390_irq s390irq; r = -EFAULT; if (copy_from_user(&s390int, argp, sizeof(s390int))) break; - r = kvm_s390_inject_vcpu(vcpu, &s390int); + if (s390int_to_s390irq(&s390int, &s390irq)) + return -EINVAL; + r = kvm_s390_inject_vcpu(vcpu, &s390irq); break; } case KVM_S390_STORE_STATUS: @@ -1771,30 +2278,11 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, static int __init kvm_s390_init(void) { - int ret; - ret = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); - if (ret) - return ret; - - /* - * guests can ask for up to 255+1 double words, we need a full page - * to hold the maximum amount of facilities. On the other hand, we - * only set facilities that are known to work in KVM. - */ - vfacilities = (unsigned long *) get_zeroed_page(GFP_KERNEL|GFP_DMA); - if (!vfacilities) { - kvm_exit(); - return -ENOMEM; - } - memcpy(vfacilities, S390_lowcore.stfle_fac_list, 16); - vfacilities[0] &= 0xff82fffbf47c2000UL; - vfacilities[1] &= 0x005c000000000000UL; - return 0; + return kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); } static void __exit kvm_s390_exit(void) { - free_page((unsigned long) vfacilities); kvm_exit(); }