int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) { int r; switch (ext) { case KVM_CAP_IRQCHIP: 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_ARM_PSCI: case KVM_CAP_ARM_PSCI_0_2: case KVM_CAP_READONLY_MEM: case KVM_CAP_MP_STATE: r = 1; break; case KVM_CAP_COALESCED_MMIO: r = KVM_COALESCED_MMIO_PAGE_OFFSET; break; case KVM_CAP_ARM_SET_DEVICE_ADDR: r = 1; break; case KVM_CAP_NR_VCPUS: r = num_online_cpus(); break; case KVM_CAP_MAX_VCPUS: r = KVM_MAX_VCPUS; break; default: r = kvm_arch_dev_ioctl_check_extension(ext); break; } return r; }
int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) { int r; switch (ext) { case KVM_CAP_IRQCHIP: r = vgic_present; break; 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_ARM_PSCI: case KVM_CAP_ARM_PSCI_0_2: case KVM_CAP_READONLY_MEM: case KVM_CAP_MP_STATE: case KVM_CAP_IMMEDIATE_EXIT: r = 1; break; case KVM_CAP_ARM_SET_DEVICE_ADDR: 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; case KVM_CAP_MSI_DEVID: if (!kvm) r = -EINVAL; else r = kvm->arch.vgic.msis_require_devid; break; case KVM_CAP_ARM_USER_IRQ: /* * 1: EL1_VTIMER, EL1_PTIMER, and PMU. * (bump this number if adding more devices) */ r = 1; break; default: r = kvm_arch_dev_ioctl_check_extension(kvm, ext); break; } return r; }