| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2020, Red Hat, Inc. |
| */ |
| #include "guest_modes.h" |
| |
| struct guest_mode guest_modes[NUM_VM_MODES]; |
| |
| void guest_modes_append_default(void) |
| { |
| guest_mode_append(VM_MODE_DEFAULT, true, true); |
| |
| #ifdef __aarch64__ |
| guest_mode_append(VM_MODE_P40V48_64K, true, true); |
| { |
| unsigned int limit = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE); |
| if (limit >= 52) |
| guest_mode_append(VM_MODE_P52V48_64K, true, true); |
| if (limit >= 48) { |
| guest_mode_append(VM_MODE_P48V48_4K, true, true); |
| guest_mode_append(VM_MODE_P48V48_64K, true, true); |
| } |
| } |
| #endif |
| #ifdef __s390x__ |
| { |
| int kvm_fd, vm_fd; |
| struct kvm_s390_vm_cpu_processor info; |
| |
| kvm_fd = open_kvm_dev_path_or_exit(); |
| vm_fd = ioctl(kvm_fd, KVM_CREATE_VM, 0); |
| kvm_device_access(vm_fd, KVM_S390_VM_CPU_MODEL, |
| KVM_S390_VM_CPU_PROCESSOR, &info, false); |
| close(vm_fd); |
| close(kvm_fd); |
| /* Starting with z13 we have 47bits of physical address */ |
| if (info.ibc >= 0x30) |
| guest_mode_append(VM_MODE_P47V64_4K, true, true); |
| } |
| #endif |
| } |
| |
| void for_each_guest_mode(void (*func)(enum vm_guest_mode, void *), void *arg) |
| { |
| int i; |
| |
| for (i = 0; i < NUM_VM_MODES; ++i) { |
| if (!guest_modes[i].enabled) |
| continue; |
| TEST_ASSERT(guest_modes[i].supported, |
| "Guest mode ID %d (%s) not supported.", |
| i, vm_guest_mode_string(i)); |
| func(i, arg); |
| } |
| } |
| |
| void guest_modes_help(void) |
| { |
| int i; |
| |
| printf(" -m: specify the guest mode ID to test\n" |
| " (default: test all supported modes)\n" |
| " This option may be used multiple times.\n" |
| " Guest mode IDs:\n"); |
| for (i = 0; i < NUM_VM_MODES; ++i) { |
| printf(" %d: %s%s\n", i, vm_guest_mode_string(i), |
| guest_modes[i].supported ? " (supported)" : ""); |
| } |
| } |
| |
| void guest_modes_cmdline(const char *arg) |
| { |
| static bool mode_selected; |
| unsigned int mode; |
| int i; |
| |
| if (!mode_selected) { |
| for (i = 0; i < NUM_VM_MODES; ++i) |
| guest_modes[i].enabled = false; |
| mode_selected = true; |
| } |
| |
| mode = strtoul(optarg, NULL, 10); |
| TEST_ASSERT(mode < NUM_VM_MODES, "Guest mode ID %d too big", mode); |
| guest_modes[mode].enabled = true; |
| } |