1b0c632dbSHeiko Carstens /* 2b0c632dbSHeiko Carstens * s390host.c -- hosting zSeries kernel virtual machines 3b0c632dbSHeiko Carstens * 4b0c632dbSHeiko Carstens * Copyright IBM Corp. 2008 5b0c632dbSHeiko Carstens * 6b0c632dbSHeiko Carstens * This program is free software; you can redistribute it and/or modify 7b0c632dbSHeiko Carstens * it under the terms of the GNU General Public License (version 2 only) 8b0c632dbSHeiko Carstens * as published by the Free Software Foundation. 9b0c632dbSHeiko Carstens * 10b0c632dbSHeiko Carstens * Author(s): Carsten Otte <cotte@de.ibm.com> 11b0c632dbSHeiko Carstens * Christian Borntraeger <borntraeger@de.ibm.com> 12b0c632dbSHeiko Carstens * Heiko Carstens <heiko.carstens@de.ibm.com> 13b0c632dbSHeiko Carstens */ 14b0c632dbSHeiko Carstens 15b0c632dbSHeiko Carstens #include <linux/compiler.h> 16b0c632dbSHeiko Carstens #include <linux/err.h> 17b0c632dbSHeiko Carstens #include <linux/fs.h> 18b0c632dbSHeiko Carstens #include <linux/init.h> 19b0c632dbSHeiko Carstens #include <linux/kvm.h> 20b0c632dbSHeiko Carstens #include <linux/kvm_host.h> 21b0c632dbSHeiko Carstens #include <linux/module.h> 22b0c632dbSHeiko Carstens #include <linux/slab.h> 23ba5c1e9bSCarsten Otte #include <linux/timer.h> 24b0c632dbSHeiko Carstens #include <asm/lowcore.h> 25b0c632dbSHeiko Carstens #include <asm/pgtable.h> 26b0c632dbSHeiko Carstens 278f2abe6aSChristian Borntraeger #include "kvm-s390.h" 28b0c632dbSHeiko Carstens #include "gaccess.h" 29b0c632dbSHeiko Carstens 30b0c632dbSHeiko Carstens #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU 31b0c632dbSHeiko Carstens 32b0c632dbSHeiko Carstens struct kvm_stats_debugfs_item debugfs_entries[] = { 33b0c632dbSHeiko Carstens { "userspace_handled", VCPU_STAT(exit_userspace) }, 348f2abe6aSChristian Borntraeger { "exit_validity", VCPU_STAT(exit_validity) }, 358f2abe6aSChristian Borntraeger { "exit_stop_request", VCPU_STAT(exit_stop_request) }, 368f2abe6aSChristian Borntraeger { "exit_external_request", VCPU_STAT(exit_external_request) }, 378f2abe6aSChristian Borntraeger { "exit_external_interrupt", VCPU_STAT(exit_external_interrupt) }, 38ba5c1e9bSCarsten Otte { "exit_instruction", VCPU_STAT(exit_instruction) }, 39ba5c1e9bSCarsten Otte { "exit_program_interruption", VCPU_STAT(exit_program_interruption) }, 40ba5c1e9bSCarsten Otte { "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) }, 41ba5c1e9bSCarsten Otte { "instruction_lctg", VCPU_STAT(instruction_lctg) }, 42ba5c1e9bSCarsten Otte { "instruction_lctl", VCPU_STAT(instruction_lctl) }, 43ba5c1e9bSCarsten Otte { "deliver_emergency_signal", VCPU_STAT(deliver_emergency_signal) }, 44ba5c1e9bSCarsten Otte { "deliver_service_signal", VCPU_STAT(deliver_service_signal) }, 45ba5c1e9bSCarsten Otte { "deliver_virtio_interrupt", VCPU_STAT(deliver_virtio_interrupt) }, 46ba5c1e9bSCarsten Otte { "deliver_stop_signal", VCPU_STAT(deliver_stop_signal) }, 47ba5c1e9bSCarsten Otte { "deliver_prefix_signal", VCPU_STAT(deliver_prefix_signal) }, 48ba5c1e9bSCarsten Otte { "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) }, 49ba5c1e9bSCarsten Otte { "deliver_program_interruption", VCPU_STAT(deliver_program_int) }, 50ba5c1e9bSCarsten Otte { "exit_wait_state", VCPU_STAT(exit_wait_state) }, 51453423dcSChristian Borntraeger { "instruction_stidp", VCPU_STAT(instruction_stidp) }, 52453423dcSChristian Borntraeger { "instruction_spx", VCPU_STAT(instruction_spx) }, 53453423dcSChristian Borntraeger { "instruction_stpx", VCPU_STAT(instruction_stpx) }, 54453423dcSChristian Borntraeger { "instruction_stap", VCPU_STAT(instruction_stap) }, 55453423dcSChristian Borntraeger { "instruction_storage_key", VCPU_STAT(instruction_storage_key) }, 56453423dcSChristian Borntraeger { "instruction_stsch", VCPU_STAT(instruction_stsch) }, 57453423dcSChristian Borntraeger { "instruction_chsc", VCPU_STAT(instruction_chsc) }, 58453423dcSChristian Borntraeger { "instruction_stsi", VCPU_STAT(instruction_stsi) }, 59453423dcSChristian Borntraeger { "instruction_stfl", VCPU_STAT(instruction_stfl) }, 60*5288fbf0SChristian Borntraeger { "instruction_sigp_sense", VCPU_STAT(instruction_sigp_sense) }, 61*5288fbf0SChristian Borntraeger { "instruction_sigp_emergency", VCPU_STAT(instruction_sigp_emergency) }, 62*5288fbf0SChristian Borntraeger { "instruction_sigp_stop", VCPU_STAT(instruction_sigp_stop) }, 63*5288fbf0SChristian Borntraeger { "instruction_sigp_set_arch", VCPU_STAT(instruction_sigp_arch) }, 64*5288fbf0SChristian Borntraeger { "instruction_sigp_set_prefix", VCPU_STAT(instruction_sigp_prefix) }, 65*5288fbf0SChristian Borntraeger { "instruction_sigp_restart", VCPU_STAT(instruction_sigp_restart) }, 66b0c632dbSHeiko Carstens { NULL } 67b0c632dbSHeiko Carstens }; 68b0c632dbSHeiko Carstens 69b0c632dbSHeiko Carstens 70b0c632dbSHeiko Carstens /* Section: not file related */ 71b0c632dbSHeiko Carstens void kvm_arch_hardware_enable(void *garbage) 72b0c632dbSHeiko Carstens { 73b0c632dbSHeiko Carstens /* every s390 is virtualization enabled ;-) */ 74b0c632dbSHeiko Carstens } 75b0c632dbSHeiko Carstens 76b0c632dbSHeiko Carstens void kvm_arch_hardware_disable(void *garbage) 77b0c632dbSHeiko Carstens { 78b0c632dbSHeiko Carstens } 79b0c632dbSHeiko Carstens 80b0c632dbSHeiko Carstens void decache_vcpus_on_cpu(int cpu) 81b0c632dbSHeiko Carstens { 82b0c632dbSHeiko Carstens } 83b0c632dbSHeiko Carstens 84b0c632dbSHeiko Carstens int kvm_arch_hardware_setup(void) 85b0c632dbSHeiko Carstens { 86b0c632dbSHeiko Carstens return 0; 87b0c632dbSHeiko Carstens } 88b0c632dbSHeiko Carstens 89b0c632dbSHeiko Carstens void kvm_arch_hardware_unsetup(void) 90b0c632dbSHeiko Carstens { 91b0c632dbSHeiko Carstens } 92b0c632dbSHeiko Carstens 93b0c632dbSHeiko Carstens void kvm_arch_check_processor_compat(void *rtn) 94b0c632dbSHeiko Carstens { 95b0c632dbSHeiko Carstens } 96b0c632dbSHeiko Carstens 97b0c632dbSHeiko Carstens int kvm_arch_init(void *opaque) 98b0c632dbSHeiko Carstens { 99b0c632dbSHeiko Carstens return 0; 100b0c632dbSHeiko Carstens } 101b0c632dbSHeiko Carstens 102b0c632dbSHeiko Carstens void kvm_arch_exit(void) 103b0c632dbSHeiko Carstens { 104b0c632dbSHeiko Carstens } 105b0c632dbSHeiko Carstens 106b0c632dbSHeiko Carstens /* Section: device related */ 107b0c632dbSHeiko Carstens long kvm_arch_dev_ioctl(struct file *filp, 108b0c632dbSHeiko Carstens unsigned int ioctl, unsigned long arg) 109b0c632dbSHeiko Carstens { 110b0c632dbSHeiko Carstens if (ioctl == KVM_S390_ENABLE_SIE) 111b0c632dbSHeiko Carstens return s390_enable_sie(); 112b0c632dbSHeiko Carstens return -EINVAL; 113b0c632dbSHeiko Carstens } 114b0c632dbSHeiko Carstens 115b0c632dbSHeiko Carstens int kvm_dev_ioctl_check_extension(long ext) 116b0c632dbSHeiko Carstens { 117b0c632dbSHeiko Carstens return 0; 118b0c632dbSHeiko Carstens } 119b0c632dbSHeiko Carstens 120b0c632dbSHeiko Carstens /* Section: vm related */ 121b0c632dbSHeiko Carstens /* 122b0c632dbSHeiko Carstens * Get (and clear) the dirty memory log for a memory slot. 123b0c632dbSHeiko Carstens */ 124b0c632dbSHeiko Carstens int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 125b0c632dbSHeiko Carstens struct kvm_dirty_log *log) 126b0c632dbSHeiko Carstens { 127b0c632dbSHeiko Carstens return 0; 128b0c632dbSHeiko Carstens } 129b0c632dbSHeiko Carstens 130b0c632dbSHeiko Carstens long kvm_arch_vm_ioctl(struct file *filp, 131b0c632dbSHeiko Carstens unsigned int ioctl, unsigned long arg) 132b0c632dbSHeiko Carstens { 133b0c632dbSHeiko Carstens struct kvm *kvm = filp->private_data; 134b0c632dbSHeiko Carstens void __user *argp = (void __user *)arg; 135b0c632dbSHeiko Carstens int r; 136b0c632dbSHeiko Carstens 137b0c632dbSHeiko Carstens switch (ioctl) { 138ba5c1e9bSCarsten Otte case KVM_S390_INTERRUPT: { 139ba5c1e9bSCarsten Otte struct kvm_s390_interrupt s390int; 140ba5c1e9bSCarsten Otte 141ba5c1e9bSCarsten Otte r = -EFAULT; 142ba5c1e9bSCarsten Otte if (copy_from_user(&s390int, argp, sizeof(s390int))) 143ba5c1e9bSCarsten Otte break; 144ba5c1e9bSCarsten Otte r = kvm_s390_inject_vm(kvm, &s390int); 145ba5c1e9bSCarsten Otte break; 146ba5c1e9bSCarsten Otte } 147b0c632dbSHeiko Carstens default: 148b0c632dbSHeiko Carstens r = -EINVAL; 149b0c632dbSHeiko Carstens } 150b0c632dbSHeiko Carstens 151b0c632dbSHeiko Carstens return r; 152b0c632dbSHeiko Carstens } 153b0c632dbSHeiko Carstens 154b0c632dbSHeiko Carstens struct kvm *kvm_arch_create_vm(void) 155b0c632dbSHeiko Carstens { 156b0c632dbSHeiko Carstens struct kvm *kvm; 157b0c632dbSHeiko Carstens int rc; 158b0c632dbSHeiko Carstens char debug_name[16]; 159b0c632dbSHeiko Carstens 160b0c632dbSHeiko Carstens rc = s390_enable_sie(); 161b0c632dbSHeiko Carstens if (rc) 162b0c632dbSHeiko Carstens goto out_nokvm; 163b0c632dbSHeiko Carstens 164b0c632dbSHeiko Carstens rc = -ENOMEM; 165b0c632dbSHeiko Carstens kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL); 166b0c632dbSHeiko Carstens if (!kvm) 167b0c632dbSHeiko Carstens goto out_nokvm; 168b0c632dbSHeiko Carstens 169b0c632dbSHeiko Carstens kvm->arch.sca = (struct sca_block *) get_zeroed_page(GFP_KERNEL); 170b0c632dbSHeiko Carstens if (!kvm->arch.sca) 171b0c632dbSHeiko Carstens goto out_nosca; 172b0c632dbSHeiko Carstens 173b0c632dbSHeiko Carstens sprintf(debug_name, "kvm-%u", current->pid); 174b0c632dbSHeiko Carstens 175b0c632dbSHeiko Carstens kvm->arch.dbf = debug_register(debug_name, 8, 2, 8 * sizeof(long)); 176b0c632dbSHeiko Carstens if (!kvm->arch.dbf) 177b0c632dbSHeiko Carstens goto out_nodbf; 178b0c632dbSHeiko Carstens 179ba5c1e9bSCarsten Otte spin_lock_init(&kvm->arch.float_int.lock); 180ba5c1e9bSCarsten Otte INIT_LIST_HEAD(&kvm->arch.float_int.list); 181ba5c1e9bSCarsten Otte 182b0c632dbSHeiko Carstens debug_register_view(kvm->arch.dbf, &debug_sprintf_view); 183b0c632dbSHeiko Carstens VM_EVENT(kvm, 3, "%s", "vm created"); 184b0c632dbSHeiko Carstens 185b0c632dbSHeiko Carstens try_module_get(THIS_MODULE); 186b0c632dbSHeiko Carstens 187b0c632dbSHeiko Carstens return kvm; 188b0c632dbSHeiko Carstens out_nodbf: 189b0c632dbSHeiko Carstens free_page((unsigned long)(kvm->arch.sca)); 190b0c632dbSHeiko Carstens out_nosca: 191b0c632dbSHeiko Carstens kfree(kvm); 192b0c632dbSHeiko Carstens out_nokvm: 193b0c632dbSHeiko Carstens return ERR_PTR(rc); 194b0c632dbSHeiko Carstens } 195b0c632dbSHeiko Carstens 196b0c632dbSHeiko Carstens void kvm_arch_destroy_vm(struct kvm *kvm) 197b0c632dbSHeiko Carstens { 198b0c632dbSHeiko Carstens debug_unregister(kvm->arch.dbf); 199b0c632dbSHeiko Carstens free_page((unsigned long)(kvm->arch.sca)); 200b0c632dbSHeiko Carstens kfree(kvm); 201b0c632dbSHeiko Carstens module_put(THIS_MODULE); 202b0c632dbSHeiko Carstens } 203b0c632dbSHeiko Carstens 204b0c632dbSHeiko Carstens /* Section: vcpu related */ 205b0c632dbSHeiko Carstens int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) 206b0c632dbSHeiko Carstens { 207b0c632dbSHeiko Carstens return 0; 208b0c632dbSHeiko Carstens } 209b0c632dbSHeiko Carstens 210b0c632dbSHeiko Carstens void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) 211b0c632dbSHeiko Carstens { 212b0c632dbSHeiko Carstens /* kvm common code refers to this, but does'nt call it */ 213b0c632dbSHeiko Carstens BUG(); 214b0c632dbSHeiko Carstens } 215b0c632dbSHeiko Carstens 216b0c632dbSHeiko Carstens void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 217b0c632dbSHeiko Carstens { 218b0c632dbSHeiko Carstens save_fp_regs(&vcpu->arch.host_fpregs); 219b0c632dbSHeiko Carstens save_access_regs(vcpu->arch.host_acrs); 220b0c632dbSHeiko Carstens vcpu->arch.guest_fpregs.fpc &= FPC_VALID_MASK; 221b0c632dbSHeiko Carstens restore_fp_regs(&vcpu->arch.guest_fpregs); 222b0c632dbSHeiko Carstens restore_access_regs(vcpu->arch.guest_acrs); 223b0c632dbSHeiko Carstens 224b0c632dbSHeiko Carstens if (signal_pending(current)) 225b0c632dbSHeiko Carstens atomic_set_mask(CPUSTAT_STOP_INT, 226b0c632dbSHeiko Carstens &vcpu->arch.sie_block->cpuflags); 227b0c632dbSHeiko Carstens } 228b0c632dbSHeiko Carstens 229b0c632dbSHeiko Carstens void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) 230b0c632dbSHeiko Carstens { 231b0c632dbSHeiko Carstens save_fp_regs(&vcpu->arch.guest_fpregs); 232b0c632dbSHeiko Carstens save_access_regs(vcpu->arch.guest_acrs); 233b0c632dbSHeiko Carstens restore_fp_regs(&vcpu->arch.host_fpregs); 234b0c632dbSHeiko Carstens restore_access_regs(vcpu->arch.host_acrs); 235b0c632dbSHeiko Carstens } 236b0c632dbSHeiko Carstens 237b0c632dbSHeiko Carstens static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) 238b0c632dbSHeiko Carstens { 239b0c632dbSHeiko Carstens /* this equals initial cpu reset in pop, but we don't switch to ESA */ 240b0c632dbSHeiko Carstens vcpu->arch.sie_block->gpsw.mask = 0UL; 241b0c632dbSHeiko Carstens vcpu->arch.sie_block->gpsw.addr = 0UL; 242b0c632dbSHeiko Carstens vcpu->arch.sie_block->prefix = 0UL; 243b0c632dbSHeiko Carstens vcpu->arch.sie_block->ihcpu = 0xffff; 244b0c632dbSHeiko Carstens vcpu->arch.sie_block->cputm = 0UL; 245b0c632dbSHeiko Carstens vcpu->arch.sie_block->ckc = 0UL; 246b0c632dbSHeiko Carstens vcpu->arch.sie_block->todpr = 0; 247b0c632dbSHeiko Carstens memset(vcpu->arch.sie_block->gcr, 0, 16 * sizeof(__u64)); 248b0c632dbSHeiko Carstens vcpu->arch.sie_block->gcr[0] = 0xE0UL; 249b0c632dbSHeiko Carstens vcpu->arch.sie_block->gcr[14] = 0xC2000000UL; 250b0c632dbSHeiko Carstens vcpu->arch.guest_fpregs.fpc = 0; 251b0c632dbSHeiko Carstens asm volatile("lfpc %0" : : "Q" (vcpu->arch.guest_fpregs.fpc)); 252b0c632dbSHeiko Carstens vcpu->arch.sie_block->gbea = 1; 253b0c632dbSHeiko Carstens } 254b0c632dbSHeiko Carstens 255b0c632dbSHeiko Carstens int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 256b0c632dbSHeiko Carstens { 257b0c632dbSHeiko Carstens atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH); 258b0c632dbSHeiko Carstens vcpu->arch.sie_block->gmslm = 0xffffffffffUL; 259b0c632dbSHeiko Carstens vcpu->arch.sie_block->gmsor = 0x000000000000; 260b0c632dbSHeiko Carstens vcpu->arch.sie_block->ecb = 2; 261b0c632dbSHeiko Carstens vcpu->arch.sie_block->eca = 0xC1002001U; 262ba5c1e9bSCarsten Otte setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup, 263ba5c1e9bSCarsten Otte (unsigned long) vcpu); 264453423dcSChristian Borntraeger get_cpu_id(&vcpu->arch.cpu_id); 265453423dcSChristian Borntraeger vcpu->arch.cpu_id.version = 0xfe; 266b0c632dbSHeiko Carstens return 0; 267b0c632dbSHeiko Carstens } 268b0c632dbSHeiko Carstens 269b0c632dbSHeiko Carstens struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, 270b0c632dbSHeiko Carstens unsigned int id) 271b0c632dbSHeiko Carstens { 272b0c632dbSHeiko Carstens struct kvm_vcpu *vcpu = kzalloc(sizeof(struct kvm_vcpu), GFP_KERNEL); 273b0c632dbSHeiko Carstens int rc = -ENOMEM; 274b0c632dbSHeiko Carstens 275b0c632dbSHeiko Carstens if (!vcpu) 276b0c632dbSHeiko Carstens goto out_nomem; 277b0c632dbSHeiko Carstens 278b0c632dbSHeiko Carstens vcpu->arch.sie_block = (struct sie_block *) get_zeroed_page(GFP_KERNEL); 279b0c632dbSHeiko Carstens 280b0c632dbSHeiko Carstens if (!vcpu->arch.sie_block) 281b0c632dbSHeiko Carstens goto out_free_cpu; 282b0c632dbSHeiko Carstens 283b0c632dbSHeiko Carstens vcpu->arch.sie_block->icpua = id; 284b0c632dbSHeiko Carstens BUG_ON(!kvm->arch.sca); 285b0c632dbSHeiko Carstens BUG_ON(kvm->arch.sca->cpu[id].sda); 286b0c632dbSHeiko Carstens kvm->arch.sca->cpu[id].sda = (__u64) vcpu->arch.sie_block; 287b0c632dbSHeiko Carstens vcpu->arch.sie_block->scaoh = (__u32)(((__u64)kvm->arch.sca) >> 32); 288b0c632dbSHeiko Carstens vcpu->arch.sie_block->scaol = (__u32)(__u64)kvm->arch.sca; 289b0c632dbSHeiko Carstens 290ba5c1e9bSCarsten Otte spin_lock_init(&vcpu->arch.local_int.lock); 291ba5c1e9bSCarsten Otte INIT_LIST_HEAD(&vcpu->arch.local_int.list); 292ba5c1e9bSCarsten Otte vcpu->arch.local_int.float_int = &kvm->arch.float_int; 293ba5c1e9bSCarsten Otte spin_lock_bh(&kvm->arch.float_int.lock); 294ba5c1e9bSCarsten Otte kvm->arch.float_int.local_int[id] = &vcpu->arch.local_int; 295ba5c1e9bSCarsten Otte init_waitqueue_head(&vcpu->arch.local_int.wq); 296*5288fbf0SChristian Borntraeger vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags; 297ba5c1e9bSCarsten Otte spin_unlock_bh(&kvm->arch.float_int.lock); 298ba5c1e9bSCarsten Otte 299b0c632dbSHeiko Carstens rc = kvm_vcpu_init(vcpu, kvm, id); 300b0c632dbSHeiko Carstens if (rc) 301b0c632dbSHeiko Carstens goto out_free_cpu; 302b0c632dbSHeiko Carstens VM_EVENT(kvm, 3, "create cpu %d at %p, sie block at %p", id, vcpu, 303b0c632dbSHeiko Carstens vcpu->arch.sie_block); 304b0c632dbSHeiko Carstens 305b0c632dbSHeiko Carstens try_module_get(THIS_MODULE); 306b0c632dbSHeiko Carstens 307b0c632dbSHeiko Carstens return vcpu; 308b0c632dbSHeiko Carstens out_free_cpu: 309b0c632dbSHeiko Carstens kfree(vcpu); 310b0c632dbSHeiko Carstens out_nomem: 311b0c632dbSHeiko Carstens return ERR_PTR(rc); 312b0c632dbSHeiko Carstens } 313b0c632dbSHeiko Carstens 314b0c632dbSHeiko Carstens void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) 315b0c632dbSHeiko Carstens { 316b0c632dbSHeiko Carstens VCPU_EVENT(vcpu, 3, "%s", "destroy cpu"); 317b0c632dbSHeiko Carstens free_page((unsigned long)(vcpu->arch.sie_block)); 318b0c632dbSHeiko Carstens kfree(vcpu); 319b0c632dbSHeiko Carstens module_put(THIS_MODULE); 320b0c632dbSHeiko Carstens } 321b0c632dbSHeiko Carstens 322b0c632dbSHeiko Carstens int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) 323b0c632dbSHeiko Carstens { 324b0c632dbSHeiko Carstens /* kvm common code refers to this, but never calls it */ 325b0c632dbSHeiko Carstens BUG(); 326b0c632dbSHeiko Carstens return 0; 327b0c632dbSHeiko Carstens } 328b0c632dbSHeiko Carstens 329b0c632dbSHeiko Carstens static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu) 330b0c632dbSHeiko Carstens { 331b0c632dbSHeiko Carstens vcpu_load(vcpu); 332b0c632dbSHeiko Carstens kvm_s390_vcpu_initial_reset(vcpu); 333b0c632dbSHeiko Carstens vcpu_put(vcpu); 334b0c632dbSHeiko Carstens return 0; 335b0c632dbSHeiko Carstens } 336b0c632dbSHeiko Carstens 337b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 338b0c632dbSHeiko Carstens { 339b0c632dbSHeiko Carstens vcpu_load(vcpu); 340b0c632dbSHeiko Carstens memcpy(&vcpu->arch.guest_gprs, ®s->gprs, sizeof(regs->gprs)); 341b0c632dbSHeiko Carstens vcpu_put(vcpu); 342b0c632dbSHeiko Carstens return 0; 343b0c632dbSHeiko Carstens } 344b0c632dbSHeiko Carstens 345b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 346b0c632dbSHeiko Carstens { 347b0c632dbSHeiko Carstens vcpu_load(vcpu); 348b0c632dbSHeiko Carstens memcpy(®s->gprs, &vcpu->arch.guest_gprs, sizeof(regs->gprs)); 349b0c632dbSHeiko Carstens vcpu_put(vcpu); 350b0c632dbSHeiko Carstens return 0; 351b0c632dbSHeiko Carstens } 352b0c632dbSHeiko Carstens 353b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 354b0c632dbSHeiko Carstens struct kvm_sregs *sregs) 355b0c632dbSHeiko Carstens { 356b0c632dbSHeiko Carstens vcpu_load(vcpu); 357b0c632dbSHeiko Carstens memcpy(&vcpu->arch.guest_acrs, &sregs->acrs, sizeof(sregs->acrs)); 358b0c632dbSHeiko Carstens memcpy(&vcpu->arch.sie_block->gcr, &sregs->crs, sizeof(sregs->crs)); 359b0c632dbSHeiko Carstens vcpu_put(vcpu); 360b0c632dbSHeiko Carstens return 0; 361b0c632dbSHeiko Carstens } 362b0c632dbSHeiko Carstens 363b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 364b0c632dbSHeiko Carstens struct kvm_sregs *sregs) 365b0c632dbSHeiko Carstens { 366b0c632dbSHeiko Carstens vcpu_load(vcpu); 367b0c632dbSHeiko Carstens memcpy(&sregs->acrs, &vcpu->arch.guest_acrs, sizeof(sregs->acrs)); 368b0c632dbSHeiko Carstens memcpy(&sregs->crs, &vcpu->arch.sie_block->gcr, sizeof(sregs->crs)); 369b0c632dbSHeiko Carstens vcpu_put(vcpu); 370b0c632dbSHeiko Carstens return 0; 371b0c632dbSHeiko Carstens } 372b0c632dbSHeiko Carstens 373b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 374b0c632dbSHeiko Carstens { 375b0c632dbSHeiko Carstens vcpu_load(vcpu); 376b0c632dbSHeiko Carstens memcpy(&vcpu->arch.guest_fpregs.fprs, &fpu->fprs, sizeof(fpu->fprs)); 377b0c632dbSHeiko Carstens vcpu->arch.guest_fpregs.fpc = fpu->fpc; 378b0c632dbSHeiko Carstens vcpu_put(vcpu); 379b0c632dbSHeiko Carstens return 0; 380b0c632dbSHeiko Carstens } 381b0c632dbSHeiko Carstens 382b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 383b0c632dbSHeiko Carstens { 384b0c632dbSHeiko Carstens vcpu_load(vcpu); 385b0c632dbSHeiko Carstens memcpy(&fpu->fprs, &vcpu->arch.guest_fpregs.fprs, sizeof(fpu->fprs)); 386b0c632dbSHeiko Carstens fpu->fpc = vcpu->arch.guest_fpregs.fpc; 387b0c632dbSHeiko Carstens vcpu_put(vcpu); 388b0c632dbSHeiko Carstens return 0; 389b0c632dbSHeiko Carstens } 390b0c632dbSHeiko Carstens 391b0c632dbSHeiko Carstens static int kvm_arch_vcpu_ioctl_set_initial_psw(struct kvm_vcpu *vcpu, psw_t psw) 392b0c632dbSHeiko Carstens { 393b0c632dbSHeiko Carstens int rc = 0; 394b0c632dbSHeiko Carstens 395b0c632dbSHeiko Carstens vcpu_load(vcpu); 396b0c632dbSHeiko Carstens if (atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_RUNNING) 397b0c632dbSHeiko Carstens rc = -EBUSY; 398b0c632dbSHeiko Carstens else 399b0c632dbSHeiko Carstens vcpu->arch.sie_block->gpsw = psw; 400b0c632dbSHeiko Carstens vcpu_put(vcpu); 401b0c632dbSHeiko Carstens return rc; 402b0c632dbSHeiko Carstens } 403b0c632dbSHeiko Carstens 404b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 405b0c632dbSHeiko Carstens struct kvm_translation *tr) 406b0c632dbSHeiko Carstens { 407b0c632dbSHeiko Carstens return -EINVAL; /* not implemented yet */ 408b0c632dbSHeiko Carstens } 409b0c632dbSHeiko Carstens 410b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu, 411b0c632dbSHeiko Carstens struct kvm_debug_guest *dbg) 412b0c632dbSHeiko Carstens { 413b0c632dbSHeiko Carstens return -EINVAL; /* not implemented yet */ 414b0c632dbSHeiko Carstens } 415b0c632dbSHeiko Carstens 416b0c632dbSHeiko Carstens static void __vcpu_run(struct kvm_vcpu *vcpu) 417b0c632dbSHeiko Carstens { 418b0c632dbSHeiko Carstens memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16); 419b0c632dbSHeiko Carstens 420b0c632dbSHeiko Carstens if (need_resched()) 421b0c632dbSHeiko Carstens schedule(); 422b0c632dbSHeiko Carstens 423b0c632dbSHeiko Carstens vcpu->arch.sie_block->icptcode = 0; 424b0c632dbSHeiko Carstens local_irq_disable(); 425b0c632dbSHeiko Carstens kvm_guest_enter(); 426b0c632dbSHeiko Carstens local_irq_enable(); 427b0c632dbSHeiko Carstens VCPU_EVENT(vcpu, 6, "entering sie flags %x", 428b0c632dbSHeiko Carstens atomic_read(&vcpu->arch.sie_block->cpuflags)); 429b0c632dbSHeiko Carstens sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs); 430b0c632dbSHeiko Carstens VCPU_EVENT(vcpu, 6, "exit sie icptcode %d", 431b0c632dbSHeiko Carstens vcpu->arch.sie_block->icptcode); 432b0c632dbSHeiko Carstens local_irq_disable(); 433b0c632dbSHeiko Carstens kvm_guest_exit(); 434b0c632dbSHeiko Carstens local_irq_enable(); 435b0c632dbSHeiko Carstens 436b0c632dbSHeiko Carstens memcpy(&vcpu->arch.guest_gprs[14], &vcpu->arch.sie_block->gg14, 16); 437b0c632dbSHeiko Carstens } 438b0c632dbSHeiko Carstens 439b0c632dbSHeiko Carstens int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) 440b0c632dbSHeiko Carstens { 4418f2abe6aSChristian Borntraeger int rc; 442b0c632dbSHeiko Carstens sigset_t sigsaved; 443b0c632dbSHeiko Carstens 444b0c632dbSHeiko Carstens vcpu_load(vcpu); 445b0c632dbSHeiko Carstens 446b0c632dbSHeiko Carstens if (vcpu->sigset_active) 447b0c632dbSHeiko Carstens sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); 448b0c632dbSHeiko Carstens 449b0c632dbSHeiko Carstens atomic_set_mask(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags); 450b0c632dbSHeiko Carstens 451ba5c1e9bSCarsten Otte BUG_ON(vcpu->kvm->arch.float_int.local_int[vcpu->vcpu_id] == NULL); 452ba5c1e9bSCarsten Otte 4538f2abe6aSChristian Borntraeger switch (kvm_run->exit_reason) { 4548f2abe6aSChristian Borntraeger case KVM_EXIT_S390_SIEIC: 4558f2abe6aSChristian Borntraeger vcpu->arch.sie_block->gpsw.mask = kvm_run->s390_sieic.mask; 4568f2abe6aSChristian Borntraeger vcpu->arch.sie_block->gpsw.addr = kvm_run->s390_sieic.addr; 4578f2abe6aSChristian Borntraeger break; 4588f2abe6aSChristian Borntraeger case KVM_EXIT_UNKNOWN: 4598f2abe6aSChristian Borntraeger case KVM_EXIT_S390_RESET: 4608f2abe6aSChristian Borntraeger break; 4618f2abe6aSChristian Borntraeger default: 4628f2abe6aSChristian Borntraeger BUG(); 4638f2abe6aSChristian Borntraeger } 4648f2abe6aSChristian Borntraeger 4658f2abe6aSChristian Borntraeger might_sleep(); 4668f2abe6aSChristian Borntraeger 4678f2abe6aSChristian Borntraeger do { 468ba5c1e9bSCarsten Otte kvm_s390_deliver_pending_interrupts(vcpu); 469b0c632dbSHeiko Carstens __vcpu_run(vcpu); 4708f2abe6aSChristian Borntraeger rc = kvm_handle_sie_intercept(vcpu); 4718f2abe6aSChristian Borntraeger } while (!signal_pending(current) && !rc); 4728f2abe6aSChristian Borntraeger 4738f2abe6aSChristian Borntraeger if (signal_pending(current) && !rc) 4748f2abe6aSChristian Borntraeger rc = -EINTR; 4758f2abe6aSChristian Borntraeger 4768f2abe6aSChristian Borntraeger if (rc == -ENOTSUPP) { 4778f2abe6aSChristian Borntraeger /* intercept cannot be handled in-kernel, prepare kvm-run */ 4788f2abe6aSChristian Borntraeger kvm_run->exit_reason = KVM_EXIT_S390_SIEIC; 4798f2abe6aSChristian Borntraeger kvm_run->s390_sieic.icptcode = vcpu->arch.sie_block->icptcode; 4808f2abe6aSChristian Borntraeger kvm_run->s390_sieic.mask = vcpu->arch.sie_block->gpsw.mask; 4818f2abe6aSChristian Borntraeger kvm_run->s390_sieic.addr = vcpu->arch.sie_block->gpsw.addr; 4828f2abe6aSChristian Borntraeger kvm_run->s390_sieic.ipa = vcpu->arch.sie_block->ipa; 4838f2abe6aSChristian Borntraeger kvm_run->s390_sieic.ipb = vcpu->arch.sie_block->ipb; 4848f2abe6aSChristian Borntraeger rc = 0; 4858f2abe6aSChristian Borntraeger } 4868f2abe6aSChristian Borntraeger 4878f2abe6aSChristian Borntraeger if (rc == -EREMOTE) { 4888f2abe6aSChristian Borntraeger /* intercept was handled, but userspace support is needed 4898f2abe6aSChristian Borntraeger * kvm_run has been prepared by the handler */ 4908f2abe6aSChristian Borntraeger rc = 0; 4918f2abe6aSChristian Borntraeger } 4928f2abe6aSChristian Borntraeger 493b0c632dbSHeiko Carstens if (vcpu->sigset_active) 494b0c632dbSHeiko Carstens sigprocmask(SIG_SETMASK, &sigsaved, NULL); 495b0c632dbSHeiko Carstens 496b0c632dbSHeiko Carstens vcpu_put(vcpu); 497b0c632dbSHeiko Carstens 498b0c632dbSHeiko Carstens vcpu->stat.exit_userspace++; 499b0c632dbSHeiko Carstens return 0; 500b0c632dbSHeiko Carstens } 501b0c632dbSHeiko Carstens 502b0c632dbSHeiko Carstens static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, const void *from, 503b0c632dbSHeiko Carstens unsigned long n, int prefix) 504b0c632dbSHeiko Carstens { 505b0c632dbSHeiko Carstens if (prefix) 506b0c632dbSHeiko Carstens return copy_to_guest(vcpu, guestdest, from, n); 507b0c632dbSHeiko Carstens else 508b0c632dbSHeiko Carstens return copy_to_guest_absolute(vcpu, guestdest, from, n); 509b0c632dbSHeiko Carstens } 510b0c632dbSHeiko Carstens 511b0c632dbSHeiko Carstens /* 512b0c632dbSHeiko Carstens * store status at address 513b0c632dbSHeiko Carstens * we use have two special cases: 514b0c632dbSHeiko Carstens * KVM_S390_STORE_STATUS_NOADDR: -> 0x1200 on 64 bit 515b0c632dbSHeiko Carstens * KVM_S390_STORE_STATUS_PREFIXED: -> prefix 516b0c632dbSHeiko Carstens */ 517b0c632dbSHeiko Carstens int __kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) 518b0c632dbSHeiko Carstens { 519b0c632dbSHeiko Carstens const unsigned char archmode = 1; 520b0c632dbSHeiko Carstens int prefix; 521b0c632dbSHeiko Carstens 522b0c632dbSHeiko Carstens if (addr == KVM_S390_STORE_STATUS_NOADDR) { 523b0c632dbSHeiko Carstens if (copy_to_guest_absolute(vcpu, 163ul, &archmode, 1)) 524b0c632dbSHeiko Carstens return -EFAULT; 525b0c632dbSHeiko Carstens addr = SAVE_AREA_BASE; 526b0c632dbSHeiko Carstens prefix = 0; 527b0c632dbSHeiko Carstens } else if (addr == KVM_S390_STORE_STATUS_PREFIXED) { 528b0c632dbSHeiko Carstens if (copy_to_guest(vcpu, 163ul, &archmode, 1)) 529b0c632dbSHeiko Carstens return -EFAULT; 530b0c632dbSHeiko Carstens addr = SAVE_AREA_BASE; 531b0c632dbSHeiko Carstens prefix = 1; 532b0c632dbSHeiko Carstens } else 533b0c632dbSHeiko Carstens prefix = 0; 534b0c632dbSHeiko Carstens 535b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, fp_regs), 536b0c632dbSHeiko Carstens vcpu->arch.guest_fpregs.fprs, 128, prefix)) 537b0c632dbSHeiko Carstens return -EFAULT; 538b0c632dbSHeiko Carstens 539b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, gp_regs), 540b0c632dbSHeiko Carstens vcpu->arch.guest_gprs, 128, prefix)) 541b0c632dbSHeiko Carstens return -EFAULT; 542b0c632dbSHeiko Carstens 543b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, psw), 544b0c632dbSHeiko Carstens &vcpu->arch.sie_block->gpsw, 16, prefix)) 545b0c632dbSHeiko Carstens return -EFAULT; 546b0c632dbSHeiko Carstens 547b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, pref_reg), 548b0c632dbSHeiko Carstens &vcpu->arch.sie_block->prefix, 4, prefix)) 549b0c632dbSHeiko Carstens return -EFAULT; 550b0c632dbSHeiko Carstens 551b0c632dbSHeiko Carstens if (__guestcopy(vcpu, 552b0c632dbSHeiko Carstens addr + offsetof(struct save_area_s390x, fp_ctrl_reg), 553b0c632dbSHeiko Carstens &vcpu->arch.guest_fpregs.fpc, 4, prefix)) 554b0c632dbSHeiko Carstens return -EFAULT; 555b0c632dbSHeiko Carstens 556b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, tod_reg), 557b0c632dbSHeiko Carstens &vcpu->arch.sie_block->todpr, 4, prefix)) 558b0c632dbSHeiko Carstens return -EFAULT; 559b0c632dbSHeiko Carstens 560b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, timer), 561b0c632dbSHeiko Carstens &vcpu->arch.sie_block->cputm, 8, prefix)) 562b0c632dbSHeiko Carstens return -EFAULT; 563b0c632dbSHeiko Carstens 564b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, clk_cmp), 565b0c632dbSHeiko Carstens &vcpu->arch.sie_block->ckc, 8, prefix)) 566b0c632dbSHeiko Carstens return -EFAULT; 567b0c632dbSHeiko Carstens 568b0c632dbSHeiko Carstens if (__guestcopy(vcpu, addr + offsetof(struct save_area_s390x, acc_regs), 569b0c632dbSHeiko Carstens &vcpu->arch.guest_acrs, 64, prefix)) 570b0c632dbSHeiko Carstens return -EFAULT; 571b0c632dbSHeiko Carstens 572b0c632dbSHeiko Carstens if (__guestcopy(vcpu, 573b0c632dbSHeiko Carstens addr + offsetof(struct save_area_s390x, ctrl_regs), 574b0c632dbSHeiko Carstens &vcpu->arch.sie_block->gcr, 128, prefix)) 575b0c632dbSHeiko Carstens return -EFAULT; 576b0c632dbSHeiko Carstens return 0; 577b0c632dbSHeiko Carstens } 578b0c632dbSHeiko Carstens 579b0c632dbSHeiko Carstens static int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) 580b0c632dbSHeiko Carstens { 581b0c632dbSHeiko Carstens int rc; 582b0c632dbSHeiko Carstens 583b0c632dbSHeiko Carstens vcpu_load(vcpu); 584b0c632dbSHeiko Carstens rc = __kvm_s390_vcpu_store_status(vcpu, addr); 585b0c632dbSHeiko Carstens vcpu_put(vcpu); 586b0c632dbSHeiko Carstens return rc; 587b0c632dbSHeiko Carstens } 588b0c632dbSHeiko Carstens 589b0c632dbSHeiko Carstens long kvm_arch_vcpu_ioctl(struct file *filp, 590b0c632dbSHeiko Carstens unsigned int ioctl, unsigned long arg) 591b0c632dbSHeiko Carstens { 592b0c632dbSHeiko Carstens struct kvm_vcpu *vcpu = filp->private_data; 593b0c632dbSHeiko Carstens void __user *argp = (void __user *)arg; 594b0c632dbSHeiko Carstens 595b0c632dbSHeiko Carstens switch (ioctl) { 596ba5c1e9bSCarsten Otte case KVM_S390_INTERRUPT: { 597ba5c1e9bSCarsten Otte struct kvm_s390_interrupt s390int; 598ba5c1e9bSCarsten Otte 599ba5c1e9bSCarsten Otte if (copy_from_user(&s390int, argp, sizeof(s390int))) 600ba5c1e9bSCarsten Otte return -EFAULT; 601ba5c1e9bSCarsten Otte return kvm_s390_inject_vcpu(vcpu, &s390int); 602ba5c1e9bSCarsten Otte } 603b0c632dbSHeiko Carstens case KVM_S390_STORE_STATUS: 604b0c632dbSHeiko Carstens return kvm_s390_vcpu_store_status(vcpu, arg); 605b0c632dbSHeiko Carstens case KVM_S390_SET_INITIAL_PSW: { 606b0c632dbSHeiko Carstens psw_t psw; 607b0c632dbSHeiko Carstens 608b0c632dbSHeiko Carstens if (copy_from_user(&psw, argp, sizeof(psw))) 609b0c632dbSHeiko Carstens return -EFAULT; 610b0c632dbSHeiko Carstens return kvm_arch_vcpu_ioctl_set_initial_psw(vcpu, psw); 611b0c632dbSHeiko Carstens } 612b0c632dbSHeiko Carstens case KVM_S390_INITIAL_RESET: 613b0c632dbSHeiko Carstens return kvm_arch_vcpu_ioctl_initial_reset(vcpu); 614b0c632dbSHeiko Carstens default: 615b0c632dbSHeiko Carstens ; 616b0c632dbSHeiko Carstens } 617b0c632dbSHeiko Carstens return -EINVAL; 618b0c632dbSHeiko Carstens } 619b0c632dbSHeiko Carstens 620b0c632dbSHeiko Carstens /* Section: memory related */ 621b0c632dbSHeiko Carstens int kvm_arch_set_memory_region(struct kvm *kvm, 622b0c632dbSHeiko Carstens struct kvm_userspace_memory_region *mem, 623b0c632dbSHeiko Carstens struct kvm_memory_slot old, 624b0c632dbSHeiko Carstens int user_alloc) 625b0c632dbSHeiko Carstens { 626b0c632dbSHeiko Carstens /* A few sanity checks. We can have exactly one memory slot which has 627b0c632dbSHeiko Carstens to start at guest virtual zero and which has to be located at a 628b0c632dbSHeiko Carstens page boundary in userland and which has to end at a page boundary. 629b0c632dbSHeiko Carstens The memory in userland is ok to be fragmented into various different 630b0c632dbSHeiko Carstens vmas. It is okay to mmap() and munmap() stuff in this slot after 631b0c632dbSHeiko Carstens doing this call at any time */ 632b0c632dbSHeiko Carstens 633b0c632dbSHeiko Carstens if (mem->slot) 634b0c632dbSHeiko Carstens return -EINVAL; 635b0c632dbSHeiko Carstens 636b0c632dbSHeiko Carstens if (mem->guest_phys_addr) 637b0c632dbSHeiko Carstens return -EINVAL; 638b0c632dbSHeiko Carstens 639b0c632dbSHeiko Carstens if (mem->userspace_addr & (PAGE_SIZE - 1)) 640b0c632dbSHeiko Carstens return -EINVAL; 641b0c632dbSHeiko Carstens 642b0c632dbSHeiko Carstens if (mem->memory_size & (PAGE_SIZE - 1)) 643b0c632dbSHeiko Carstens return -EINVAL; 644b0c632dbSHeiko Carstens 645b0c632dbSHeiko Carstens kvm->arch.guest_origin = mem->userspace_addr; 646b0c632dbSHeiko Carstens kvm->arch.guest_memsize = mem->memory_size; 647b0c632dbSHeiko Carstens 648b0c632dbSHeiko Carstens /* FIXME: we do want to interrupt running CPUs and update their memory 649b0c632dbSHeiko Carstens configuration now to avoid race conditions. But hey, changing the 650b0c632dbSHeiko Carstens memory layout while virtual CPUs are running is usually bad 651b0c632dbSHeiko Carstens programming practice. */ 652b0c632dbSHeiko Carstens 653b0c632dbSHeiko Carstens return 0; 654b0c632dbSHeiko Carstens } 655b0c632dbSHeiko Carstens 656b0c632dbSHeiko Carstens gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn) 657b0c632dbSHeiko Carstens { 658b0c632dbSHeiko Carstens return gfn; 659b0c632dbSHeiko Carstens } 660b0c632dbSHeiko Carstens 661b0c632dbSHeiko Carstens static int __init kvm_s390_init(void) 662b0c632dbSHeiko Carstens { 663b0c632dbSHeiko Carstens return kvm_init(NULL, sizeof(struct kvm_vcpu), THIS_MODULE); 664b0c632dbSHeiko Carstens } 665b0c632dbSHeiko Carstens 666b0c632dbSHeiko Carstens static void __exit kvm_s390_exit(void) 667b0c632dbSHeiko Carstens { 668b0c632dbSHeiko Carstens kvm_exit(); 669b0c632dbSHeiko Carstens } 670b0c632dbSHeiko Carstens 671b0c632dbSHeiko Carstens module_init(kvm_s390_init); 672b0c632dbSHeiko Carstens module_exit(kvm_s390_exit); 673