diff options
Diffstat (limited to 'hw/i386/acpi-build.c')
| -rw-r--r-- | hw/i386/acpi-build.c | 96 |
1 files changed, 7 insertions, 89 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 53f804ac16..f4e366f64f 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -85,7 +85,6 @@ * a little bit, there should be plenty of free space since the DSDT * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. */ -#define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 #define ACPI_BUILD_ALIGN_SIZE 0x1000 #define ACPI_BUILD_TABLE_SIZE 0x20000 @@ -2459,7 +2458,6 @@ struct AcpiBuildState { MemoryRegion *table_mr; /* Is table patched? */ uint8_t patched; - void *rsdp; MemoryRegion *rsdp_mr; MemoryRegion *linker_mr; } AcpiBuildState; @@ -2495,17 +2493,15 @@ static void acpi_build(AcpiBuildTables *tables, MachineState *machine) { PCMachineState *pcms = PC_MACHINE(machine); - PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); X86MachineState *x86ms = X86_MACHINE(machine); DeviceState *iommu = pcms->iommu; GArray *table_offsets; - unsigned facs, dsdt, rsdt, fadt; + unsigned facs, dsdt, rsdt; AcpiPmInfo pm; AcpiMiscInfo misc; AcpiMcfgInfo mcfg; Range pci_hole = {}, pci_hole64 = {}; uint8_t *u; - size_t aml_len = 0; GArray *tables_blob = tables->table_data; AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; Object *vmgenid_dev; @@ -2551,19 +2547,12 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) build_dsdt(tables_blob, tables->linker, &pm, &misc, &pci_hole, &pci_hole64, machine); - /* Count the size of the DSDT and SSDT, we will need it for legacy - * sizing of ACPI tables. - */ - aml_len += tables_blob->len - dsdt; - /* ACPI tables pointed to by RSDT */ - fadt = tables_blob->len; acpi_add_table(table_offsets, tables_blob); pm.fadt.facs_tbl_offset = &facs; pm.fadt.dsdt_tbl_offset = &dsdt; pm.fadt.xdsdt_tbl_offset = &dsdt; build_fadt(tables_blob, tables->linker, &pm.fadt, oem_id, oem_table_id); - aml_len += tables_blob->len - fadt; acpi_add_table(table_offsets, tables_blob); acpi_build_madt(tables_blob, tables->linker, x86ms, @@ -2675,16 +2664,6 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) .rsdt_tbl_offset = &rsdt, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); - if (!pcmc->rsdp_in_ram) { - /* We used to allocate some extra space for RSDP revision 2 but - * only used the RSDP revision 0 space. The extra bytes were - * zeroed out and not used. - * Here we continue wasting those extra 16 bytes to make sure we - * don't break migration for machine types 2.2 and older due to - * RSDP blob size mismatch. - */ - build_append_int_noprefix(tables->rsdp, 0, 16); - } } /* We'll expose it all to Guest so we want to reduce @@ -2694,49 +2673,9 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) * too simple to be enough. 4k turned out to be too small an * alignment very soon, and in fact it is almost impossible to * keep the table size stable for all (max_cpus, max_memory_slots) - * combinations. So the table size is always 64k for pc-i440fx-2.1 - * and we give an error if the table grows beyond that limit. - * - * We still have the problem of migrating from "-M pc-i440fx-2.0". For - * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables - * than 2.0 and we can always pad the smaller tables with zeros. We can - * then use the exact size of the 2.0 tables. - * - * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. + * combinations. */ - if (pcmc->legacy_acpi_table_size) { - /* Subtracting aml_len gives the size of fixed tables. Then add the - * size of the PIIX4 DSDT/SSDT in QEMU 2.0. - */ - int legacy_aml_len = - pcmc->legacy_acpi_table_size + - ACPI_BUILD_LEGACY_CPU_AML_SIZE * x86ms->apic_id_limit; - int legacy_table_size = - ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, - ACPI_BUILD_ALIGN_SIZE); - if ((tables_blob->len > legacy_table_size) && - !pcmc->resizable_acpi_blob) { - /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ - warn_report("ACPI table size %u exceeds %d bytes," - " migration may not work", - tables_blob->len, legacy_table_size); - error_printf("Try removing CPUs, NUMA nodes, memory slots" - " or PCI bridges.\n"); - } - g_array_set_size(tables_blob, legacy_table_size); - } else { - /* Make sure we have a buffer in case we need to resize the tables. */ - if ((tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) && - !pcmc->resizable_acpi_blob) { - /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ - warn_report("ACPI table size %u exceeds %d bytes," - " migration may not work", - tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); - error_printf("Try removing CPUs, NUMA nodes, memory slots" - " or PCI bridges.\n"); - } - acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); - } + acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); @@ -2774,11 +2713,7 @@ static void acpi_build_update(void *build_opaque) acpi_ram_update(build_state->table_mr, tables.table_data); - if (build_state->rsdp) { - memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); - } else { - acpi_ram_update(build_state->rsdp_mr, tables.rsdp); - } + acpi_ram_update(build_state->rsdp_mr, tables.rsdp); acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); acpi_build_tables_cleanup(&tables, true); @@ -2803,7 +2738,6 @@ static const VMStateDescription vmstate_acpi_build = { void acpi_setup(void) { PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); - PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); X86MachineState *x86ms = X86_MACHINE(pcms); AcpiBuildTables tables; AcpiBuildState *build_state; @@ -2865,25 +2799,9 @@ void acpi_setup(void) tables.vmgenid); } - if (!pcmc->rsdp_in_ram) { - /* - * Keep for compatibility with old machine types. - * Though RSDP is small, its contents isn't immutable, so - * we'll update it along with the rest of tables on guest access. - */ - uint32_t rsdp_size = acpi_data_len(tables.rsdp); - - build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); - fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE, - acpi_build_update, NULL, build_state, - build_state->rsdp, rsdp_size, true); - build_state->rsdp_mr = NULL; - } else { - build_state->rsdp = NULL; - build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, - build_state, tables.rsdp, - ACPI_BUILD_RSDP_FILE); - } + build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, + build_state, tables.rsdp, + ACPI_BUILD_RSDP_FILE); qemu_register_reset(acpi_build_reset, build_state); acpi_build_reset(build_state); |