| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2019 Western Digital Corporation or its affiliates. |
| * |
| * Authors: |
| * Anup Patel <anup.patel@wdc.com> |
| */ |
| |
| #include <linux/errno.h> |
| #include <linux/err.h> |
| #include <linux/module.h> |
| #include <linux/uaccess.h> |
| #include <linux/kvm_host.h> |
| |
| int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
| { |
| int r; |
| |
| r = kvm_riscv_stage2_alloc_pgd(kvm); |
| if (r) |
| return r; |
| |
| r = kvm_riscv_stage2_vmid_init(kvm); |
| if (r) { |
| kvm_riscv_stage2_free_pgd(kvm); |
| return r; |
| } |
| |
| return kvm_riscv_guest_timer_init(kvm); |
| } |
| |
| 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_destroy(kvm->vcpus[i]); |
| kvm->vcpus[i] = NULL; |
| } |
| } |
| } |
| |
| int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) |
| { |
| int r; |
| |
| switch (ext) { |
| case KVM_CAP_IOEVENTFD: |
| case KVM_CAP_DEVICE_CTRL: |
| case KVM_CAP_USER_MEMORY: |
| case KVM_CAP_SYNC_MMU: |
| case KVM_CAP_DESTROY_MEMORY_REGION_WORKS: |
| case KVM_CAP_ONE_REG: |
| case KVM_CAP_READONLY_MEM: |
| case KVM_CAP_MP_STATE: |
| case KVM_CAP_IMMEDIATE_EXIT: |
| r = 1; |
| break; |
| case KVM_CAP_NR_VCPUS: |
| r = num_online_cpus(); |
| break; |
| case KVM_CAP_MAX_VCPUS: |
| r = KVM_MAX_VCPUS; |
| break; |
| case KVM_CAP_NR_MEMSLOTS: |
| r = KVM_USER_MEM_SLOTS; |
| break; |
| default: |
| r = 0; |
| break; |
| } |
| |
| return r; |
| } |
| |
| long kvm_arch_vm_ioctl(struct file *filp, |
| unsigned int ioctl, unsigned long arg) |
| { |
| return -EINVAL; |
| } |