diff options
Diffstat (limited to 'hw/s390x/s390-virtio-ccw.c')
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 59 |
1 files changed, 53 insertions, 6 deletions
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 6a57f94197..35df7e19c5 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -152,14 +152,38 @@ static void virtio_ccw_register_hcalls(void) virtio_ccw_hcall_early_printk); } +/* + * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages + * as the dirty bitmap must be managed by bitops that take an int as + * position indicator. If we have a guest beyond that we will split off + * new subregions. The split must happen on a segment boundary (1MB). + */ +#define KVM_MEM_MAX_NR_PAGES ((1ULL << 31) - 1) +#define SEG_MSK (~0xfffffULL) +#define KVM_SLOT_MAX_BYTES ((KVM_MEM_MAX_NR_PAGES * TARGET_PAGE_SIZE) & SEG_MSK) static void s390_memory_init(ram_addr_t mem_size) { MemoryRegion *sysmem = get_system_memory(); - MemoryRegion *ram = g_new(MemoryRegion, 1); + ram_addr_t chunk, offset = 0; + unsigned int number = 0; + gchar *name; /* allocate RAM for core */ - memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size); - memory_region_add_subregion(sysmem, 0, ram); + name = g_strdup_printf("s390.ram"); + while (mem_size) { + MemoryRegion *ram = g_new(MemoryRegion, 1); + uint64_t size = mem_size; + + /* KVM does not allow memslots >= 8 TB */ + chunk = MIN(size, KVM_SLOT_MAX_BYTES); + memory_region_allocate_system_memory(ram, NULL, name, chunk); + memory_region_add_subregion(sysmem, offset, ram); + mem_size -= chunk; + offset += chunk; + g_free(name); + name = g_strdup_printf("s390.ram.%u", ++number); + } + g_free(name); /* Initialize storage key device */ s390_skeys_init(); @@ -302,13 +326,17 @@ static void ccw_init(MachineState *machine) /* * Non mcss-e enabled guests only see the devices from the default * css, which is determined by the value of the squash_mcss property. - * Note: we must not squash non virtual devices to css 0xFE. */ if (css_bus->squash_mcss) { ret = css_create_css_image(0, true); } else { ret = css_create_css_image(VIRTUAL_CSSID, true); } + if (qemu_opt_get(qemu_get_machine_opts(), "s390-squash-mcss")) { + warn_report("The machine property 's390-squash-mcss' is deprecated" + " (obsoleted by lifting the cssid restrictions)."); + } + assert(ret == 0); if (css_migration_enabled()) { css_register_vmstate(); @@ -583,7 +611,7 @@ static inline void s390_machine_initfn(Object *obj) object_property_add_bool(obj, "s390-squash-mcss", machine_get_squash_mcss, machine_set_squash_mcss, NULL); - object_property_set_description(obj, "s390-squash-mcss", + object_property_set_description(obj, "s390-squash-mcss", "(deprecated) " "enable/disable squashing subchannels into the default css", NULL); object_property_set_bool(obj, false, "s390-squash-mcss", NULL); @@ -639,6 +667,9 @@ bool css_migration_enabled(void) } \ type_init(ccw_machine_register_##suffix) +#define CCW_COMPAT_2_11 \ + HW_COMPAT_2_11 + #define CCW_COMPAT_2_10 \ HW_COMPAT_2_10 @@ -716,14 +747,30 @@ bool css_migration_enabled(void) .value = "0",\ }, +static void ccw_machine_2_12_instance_options(MachineState *machine) +{ +} + +static void ccw_machine_2_12_class_options(MachineClass *mc) +{ +} +DEFINE_CCW_MACHINE(2_12, "2.12", true); + static void ccw_machine_2_11_instance_options(MachineState *machine) { + static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V2_11 }; + ccw_machine_2_12_instance_options(machine); + + /* before 2.12 we emulated the very first z900 */ + s390_set_qemu_cpu_model(0x2064, 7, 1, qemu_cpu_feat); } static void ccw_machine_2_11_class_options(MachineClass *mc) { + ccw_machine_2_12_class_options(mc); + SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_11); } -DEFINE_CCW_MACHINE(2_11, "2.11", true); +DEFINE_CCW_MACHINE(2_11, "2.11", false); static void ccw_machine_2_10_instance_options(MachineState *machine) { |