diff options
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index c08bf11297..aa2bbd14e0 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -2548,27 +2548,36 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, static int virt_kvm_type(MachineState *ms, const char *type_str) { VirtMachineState *vms = VIRT_MACHINE(ms); - int max_vm_pa_size = kvm_arm_get_max_vm_ipa_size(ms); - int requested_pa_size; + int max_vm_pa_size, requested_pa_size; + bool fixed_ipa; + + max_vm_pa_size = kvm_arm_get_max_vm_ipa_size(ms, &fixed_ipa); /* we freeze the memory map to compute the highest gpa */ virt_set_memmap(vms); requested_pa_size = 64 - clz64(vms->highest_gpa); + /* + * KVM requires the IPA size to be at least 32 bits. + */ + if (requested_pa_size < 32) { + requested_pa_size = 32; + } + if (requested_pa_size > max_vm_pa_size) { error_report("-m and ,maxmem option values " "require an IPA range (%d bits) larger than " "the one supported by the host (%d bits)", requested_pa_size, max_vm_pa_size); - exit(1); + exit(1); } /* - * By default we return 0 which corresponds to an implicit legacy - * 40b IPA setting. Otherwise we return the actual requested PA - * logsize + * We return the requested PA log size, unless KVM only supports + * the implicit legacy 40b IPA setting, in which case the kvm_type + * must be 0. */ - return requested_pa_size > 40 ? requested_pa_size : 0; + return fixed_ipa ? 0 : requested_pa_size; } static void virt_machine_class_init(ObjectClass *oc, void *data) |