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Diffstat (limited to 'hw/i386/acpi-build.c')
-rw-r--r--hw/i386/acpi-build.c96
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);
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-21 02:09:48 +0000