fb5dad4084
Older machines like z196 and zEC12 do only support 44 bits of physical
addresses. Make this the default and check via IBC if we are on a later
machine. We then add P47V64 as an additional model.
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Link: https://lore.kernel.org/kvm/20210701153853.33063-1-borntraeger@de.ibm.com/
Fixes: 1bc603af73 ("KVM: selftests: introduce P47V64 for s390x")
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020, Red Hat, Inc.
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*/
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#include "guest_modes.h"
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struct guest_mode guest_modes[NUM_VM_MODES];
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void guest_modes_append_default(void)
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{
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guest_mode_append(VM_MODE_DEFAULT, true, true);
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#ifdef __aarch64__
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guest_mode_append(VM_MODE_P40V48_64K, true, true);
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{
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unsigned int limit = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE);
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if (limit >= 52)
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guest_mode_append(VM_MODE_P52V48_64K, true, true);
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if (limit >= 48) {
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guest_mode_append(VM_MODE_P48V48_4K, true, true);
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guest_mode_append(VM_MODE_P48V48_64K, true, true);
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}
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}
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#endif
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#ifdef __s390x__
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{
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int kvm_fd, vm_fd;
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struct kvm_s390_vm_cpu_processor info;
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kvm_fd = open_kvm_dev_path_or_exit();
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vm_fd = ioctl(kvm_fd, KVM_CREATE_VM, 0);
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kvm_device_access(vm_fd, KVM_S390_VM_CPU_MODEL,
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KVM_S390_VM_CPU_PROCESSOR, &info, false);
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close(vm_fd);
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close(kvm_fd);
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/* Starting with z13 we have 47bits of physical address */
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if (info.ibc >= 0x30)
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guest_mode_append(VM_MODE_P47V64_4K, true, true);
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}
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#endif
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}
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void for_each_guest_mode(void (*func)(enum vm_guest_mode, void *), void *arg)
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{
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int i;
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for (i = 0; i < NUM_VM_MODES; ++i) {
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if (!guest_modes[i].enabled)
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continue;
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TEST_ASSERT(guest_modes[i].supported,
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"Guest mode ID %d (%s) not supported.",
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i, vm_guest_mode_string(i));
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func(i, arg);
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}
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}
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void guest_modes_help(void)
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{
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int i;
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printf(" -m: specify the guest mode ID to test\n"
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" (default: test all supported modes)\n"
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" This option may be used multiple times.\n"
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" Guest mode IDs:\n");
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for (i = 0; i < NUM_VM_MODES; ++i) {
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printf(" %d: %s%s\n", i, vm_guest_mode_string(i),
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guest_modes[i].supported ? " (supported)" : "");
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}
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}
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void guest_modes_cmdline(const char *arg)
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{
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static bool mode_selected;
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unsigned int mode;
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int i;
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if (!mode_selected) {
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for (i = 0; i < NUM_VM_MODES; ++i)
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guest_modes[i].enabled = false;
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mode_selected = true;
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}
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mode = strtoul(optarg, NULL, 10);
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TEST_ASSERT(mode < NUM_VM_MODES, "Guest mode ID %d too big", mode);
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guest_modes[mode].enabled = true;
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}
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