| /* |
| * Copyright (C) 2012 - Virtual Open Systems and Columbia University |
| * Author: Christoffer Dall <c.dall@virtualopensystems.com> |
| * |
| * 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. |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/err.h> |
| #include <linux/kvm_host.h> |
| #include <linux/module.h> |
| #include <linux/vmalloc.h> |
| #include <linux/fs.h> |
| #include <linux/mman.h> |
| #include <linux/sched.h> |
| #include <trace/events/kvm.h> |
| |
| #define CREATE_TRACE_POINTS |
| #include "trace.h" |
| |
| #include <asm/unified.h> |
| #include <asm/uaccess.h> |
| #include <asm/ptrace.h> |
| #include <asm/mman.h> |
| #include <asm/cputype.h> |
| |
| #ifdef REQUIRES_VIRT |
| __asm__(".arch_extension virt"); |
| #endif |
| |
| int kvm_arch_hardware_enable(void *garbage) |
| { |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
| { |
| return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE; |
| } |
| |
| void kvm_arch_hardware_disable(void *garbage) |
| { |
| } |
| |
| int kvm_arch_hardware_setup(void) |
| { |
| return 0; |
| } |
| |
| void kvm_arch_hardware_unsetup(void) |
| { |
| } |
| |
| void kvm_arch_check_processor_compat(void *rtn) |
| { |
| *(int *)rtn = 0; |
| } |
| |
| void kvm_arch_sync_events(struct kvm *kvm) |
| { |
| } |
| |
| int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
| { |
| if (type) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
| { |
| return VM_FAULT_SIGBUS; |
| } |
| |
| void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
| struct kvm_memory_slot *dont) |
| { |
| } |
| |
| int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) |
| { |
| return 0; |
| } |
| |
| void kvm_arch_destroy_vm(struct kvm *kvm) |
| { |
| int i; |
| |
| for (i = 0; i < KVM_MAX_VCPUS; ++i) { |
| if (kvm->vcpus[i]) { |
| kvm_arch_vcpu_free(kvm->vcpus[i]); |
| kvm->vcpus[i] = NULL; |
| } |
| } |
| } |
| |
| int kvm_dev_ioctl_check_extension(long ext) |
| { |
| int r; |
| switch (ext) { |
| case KVM_CAP_USER_MEMORY: |
| case KVM_CAP_SYNC_MMU: |
| case KVM_CAP_DESTROY_MEMORY_REGION_WORKS: |
| case KVM_CAP_ONE_REG: |
| r = 1; |
| break; |
| case KVM_CAP_COALESCED_MMIO: |
| r = KVM_COALESCED_MMIO_PAGE_OFFSET; |
| break; |
| case KVM_CAP_NR_VCPUS: |
| r = num_online_cpus(); |
| break; |
| case KVM_CAP_MAX_VCPUS: |
| r = KVM_MAX_VCPUS; |
| break; |
| default: |
| r = 0; |
| break; |
| } |
| return r; |
| } |
| |
| long kvm_arch_dev_ioctl(struct file *filp, |
| unsigned int ioctl, unsigned long arg) |
| { |
| return -EINVAL; |
| } |
| |
| int kvm_arch_set_memory_region(struct kvm *kvm, |
| struct kvm_userspace_memory_region *mem, |
| struct kvm_memory_slot old, |
| int user_alloc) |
| { |
| return 0; |
| } |
| |
| int kvm_arch_prepare_memory_region(struct kvm *kvm, |
| struct kvm_memory_slot *memslot, |
| struct kvm_memory_slot old, |
| struct kvm_userspace_memory_region *mem, |
| int user_alloc) |
| { |
| return 0; |
| } |
| |
| void kvm_arch_commit_memory_region(struct kvm *kvm, |
| struct kvm_userspace_memory_region *mem, |
| struct kvm_memory_slot old, |
| int user_alloc) |
| { |
| } |
| |
| void kvm_arch_flush_shadow_all(struct kvm *kvm) |
| { |
| } |
| |
| void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
| struct kvm_memory_slot *slot) |
| { |
| } |
| |
| struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
| { |
| int err; |
| struct kvm_vcpu *vcpu; |
| |
| vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); |
| if (!vcpu) { |
| err = -ENOMEM; |
| goto out; |
| } |
| |
| err = kvm_vcpu_init(vcpu, kvm, id); |
| if (err) |
| goto free_vcpu; |
| |
| return vcpu; |
| free_vcpu: |
| kmem_cache_free(kvm_vcpu_cache, vcpu); |
| out: |
| return ERR_PTR(err); |
| } |
| |
| int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
| { |
| return 0; |
| } |
| |
| void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) |
| { |
| kvm_arch_vcpu_free(vcpu); |
| } |
| |
| int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
| { |
| return 0; |
| } |
| |
| int __attribute_const__ kvm_target_cpu(void) |
| { |
| unsigned long implementor = read_cpuid_implementor(); |
| unsigned long part_number = read_cpuid_part_number(); |
| |
| if (implementor != ARM_CPU_IMP_ARM) |
| return -EINVAL; |
| |
| switch (part_number) { |
| case ARM_CPU_PART_CORTEX_A15: |
| return KVM_ARM_TARGET_CORTEX_A15; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
| { |
| return 0; |
| } |
| |
| void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| { |
| } |
| |
| void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) |
| { |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
| struct kvm_guest_debug *dbg) |
| { |
| return -EINVAL; |
| } |
| |
| |
| int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
| struct kvm_mp_state *mp_state) |
| { |
| return -EINVAL; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, |
| struct kvm_mp_state *mp_state) |
| { |
| return -EINVAL; |
| } |
| |
| int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
| { |
| return 0; |
| } |
| |
| int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) |
| { |
| return -EINVAL; |
| } |
| |
| long kvm_arch_vcpu_ioctl(struct file *filp, |
| unsigned int ioctl, unsigned long arg) |
| { |
| struct kvm_vcpu *vcpu = filp->private_data; |
| void __user *argp = (void __user *)arg; |
| |
| switch (ioctl) { |
| case KVM_ARM_VCPU_INIT: { |
| struct kvm_vcpu_init init; |
| |
| if (copy_from_user(&init, argp, sizeof(init))) |
| return -EFAULT; |
| |
| return kvm_vcpu_set_target(vcpu, &init); |
| |
| } |
| case KVM_SET_ONE_REG: |
| case KVM_GET_ONE_REG: { |
| struct kvm_one_reg reg; |
| if (copy_from_user(®, argp, sizeof(reg))) |
| return -EFAULT; |
| if (ioctl == KVM_SET_ONE_REG) |
| return kvm_arm_set_reg(vcpu, ®); |
| else |
| return kvm_arm_get_reg(vcpu, ®); |
| } |
| case KVM_GET_REG_LIST: { |
| struct kvm_reg_list __user *user_list = argp; |
| struct kvm_reg_list reg_list; |
| unsigned n; |
| |
| if (copy_from_user(®_list, user_list, sizeof(reg_list))) |
| return -EFAULT; |
| n = reg_list.n; |
| reg_list.n = kvm_arm_num_regs(vcpu); |
| if (copy_to_user(user_list, ®_list, sizeof(reg_list))) |
| return -EFAULT; |
| if (n < reg_list.n) |
| return -E2BIG; |
| return kvm_arm_copy_reg_indices(vcpu, user_list->reg); |
| } |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) |
| { |
| return -EINVAL; |
| } |
| |
| long kvm_arch_vm_ioctl(struct file *filp, |
| unsigned int ioctl, unsigned long arg) |
| { |
| return -EINVAL; |
| } |
| |
| int kvm_arch_init(void *opaque) |
| { |
| return 0; |
| } |
| |
| /* NOP: Compiling as a module not supported */ |
| void kvm_arch_exit(void) |
| { |
| } |
| |
| static int arm_init(void) |
| { |
| int rc = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); |
| return rc; |
| } |
| |
| module_init(arm_init); |