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-rw-r--r--hw/i386/acpi-build.c99
-rw-r--r--hw/i386/acpi-dsdt.dsl90
-rw-r--r--hw/i386/acpi-dsdt.hex.generated1870
-rw-r--r--hw/i386/pc_piix.c20
-rw-r--r--hw/i386/pc_q35.c5
-rw-r--r--include/hw/i386/pc.h1
-rw-r--r--tests/acpi-test-data/pc/DSDTbin4499 -> 2807 bytes
-rw-r--r--tests/bios-tables-test.c6
8 files changed, 249 insertions, 1842 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index ebc5f034e3..816c6d9b47 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -25,7 +25,9 @@
#include <glib.h>
#include "qemu-common.h"
#include "qemu/bitmap.h"
+#include "qemu/osdep.h"
#include "qemu/range.h"
+#include "qemu/error-report.h"
#include "hw/pci/pci.h"
#include "qom/cpu.h"
#include "hw/i386/pc.h"
@@ -52,6 +54,16 @@
#include "qapi/qmp/qint.h"
#include "qom/qom-qobject.h"
+/* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
+ * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
+ * 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
+
typedef struct AcpiCpuInfo {
DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT);
} AcpiCpuInfo;
@@ -64,6 +76,7 @@ typedef struct AcpiMcfgInfo {
typedef struct AcpiPmInfo {
bool s3_disabled;
bool s4_disabled;
+ bool pcihp_bridge_en;
uint8_t s4_val;
uint16_t sci_int;
uint8_t acpi_enable_cmd;
@@ -85,6 +98,7 @@ typedef struct AcpiBuildPciBusHotplugState {
GArray *device_table;
GArray *notify_table;
struct AcpiBuildPciBusHotplugState *parent;
+ bool pcihp_bridge_en;
} AcpiBuildPciBusHotplugState;
static void acpi_get_dsdt(AcpiMiscInfo *info)
@@ -188,6 +202,9 @@ static void acpi_get_pm_info(AcpiPmInfo *pm)
NULL);
pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
NULL);
+ pm->pcihp_bridge_en =
+ object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
+ NULL);
}
static void acpi_get_misc_info(AcpiMiscInfo *info)
@@ -768,11 +785,13 @@ static void acpi_set_pci_info(void)
}
static void build_pci_bus_state_init(AcpiBuildPciBusHotplugState *state,
- AcpiBuildPciBusHotplugState *parent)
+ AcpiBuildPciBusHotplugState *parent,
+ bool pcihp_bridge_en)
{
state->parent = parent;
state->device_table = build_alloc_array();
state->notify_table = build_alloc_array();
+ state->pcihp_bridge_en = pcihp_bridge_en;
}
static void build_pci_bus_state_cleanup(AcpiBuildPciBusHotplugState *state)
@@ -786,7 +805,7 @@ static void *build_pci_bus_begin(PCIBus *bus, void *parent_state)
AcpiBuildPciBusHotplugState *parent = parent_state;
AcpiBuildPciBusHotplugState *child = g_malloc(sizeof *child);
- build_pci_bus_state_init(child, parent);
+ build_pci_bus_state_init(child, parent, parent->pcihp_bridge_en);
return child;
}
@@ -807,6 +826,14 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
GArray *method;
bool bus_hotplug_support = false;
+ /*
+ * Skip bridge subtree creation if bridge hotplug is disabled
+ * to make acpi tables compatible with legacy machine types.
+ */
+ if (!child->pcihp_bridge_en && bus->parent_dev) {
+ return;
+ }
+
if (bus->parent_dev) {
op = 0x82; /* DeviceOp */
build_append_nameseg(bus_table, "S%.02X_",
@@ -844,6 +871,7 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
PCIDeviceClass *pc;
PCIDevice *pdev = bus->devices[i];
int slot = PCI_SLOT(i);
+ bool bridge_in_acpi;
if (!pdev) {
continue;
@@ -853,7 +881,13 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
pc = PCI_DEVICE_GET_CLASS(pdev);
dc = DEVICE_GET_CLASS(pdev);
- if (pc->class_id == PCI_CLASS_BRIDGE_ISA || pc->is_bridge) {
+ /* When hotplug for bridges is enabled, bridges are
+ * described in ACPI separately (see build_pci_bus_end).
+ * In this case they aren't themselves hot-pluggable.
+ */
+ bridge_in_acpi = pc->is_bridge && child->pcihp_bridge_en;
+
+ if (pc->class_id == PCI_CLASS_BRIDGE_ISA || bridge_in_acpi) {
set_bit(slot, slot_device_system);
}
@@ -865,7 +899,7 @@ static void build_pci_bus_end(PCIBus *bus, void *bus_state)
}
}
- if (!dc->hotpluggable || pc->is_bridge) {
+ if (!dc->hotpluggable || bridge_in_acpi) {
clear_bit(slot, slot_hotplug_enable);
}
}
@@ -1130,7 +1164,7 @@ build_ssdt(GArray *table_data, GArray *linker,
bus = PCI_HOST_BRIDGE(pci_host)->bus;
}
- build_pci_bus_state_init(&hotplug_state, NULL);
+ build_pci_bus_state_init(&hotplug_state, NULL, pm->pcihp_bridge_en);
if (bus) {
/* Scan all PCI buses. Generate tables to support hotplug. */
@@ -1440,13 +1474,14 @@ static
void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
- unsigned facs, dsdt, rsdt;
+ unsigned facs, ssdt, dsdt, rsdt;
AcpiCpuInfo cpu;
AcpiPmInfo pm;
AcpiMiscInfo misc;
AcpiMcfgInfo mcfg;
PcPciInfo pci;
uint8_t *u;
+ size_t aml_len = 0;
acpi_get_cpu_info(&cpu);
acpi_get_pm_info(&pm);
@@ -1474,13 +1509,20 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
dsdt = tables->table_data->len;
build_dsdt(tables->table_data, tables->linker, &misc);
+ /* Count the size of the DSDT and SSDT, we will need it for legacy
+ * sizing of ACPI tables.
+ */
+ aml_len += tables->table_data->len - dsdt;
+
/* ACPI tables pointed to by RSDT */
acpi_add_table(table_offsets, tables->table_data);
build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt);
+ ssdt = tables->table_data->len;
acpi_add_table(table_offsets, tables->table_data);
build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci,
guest_info);
+ aml_len += tables->table_data->len - ssdt;
acpi_add_table(table_offsets, tables->table_data);
build_madt(tables->table_data, tables->linker, &cpu, guest_info);
@@ -1513,14 +1555,53 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
/* RSDP is in FSEG memory, so allocate it separately */
build_rsdp(tables->rsdp, tables->linker, rsdt);
- /* We'll expose it all to Guest so align size to reduce
+ /* We'll expose it all to Guest so we want to reduce
* chance of size changes.
* RSDP is small so it's easy to keep it immutable, no need to
* bother with alignment.
+ *
+ * We used to align the tables to 4k, but of course this would
+ * 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.
*/
- acpi_align_size(tables->table_data, 0x1000);
+ if (guest_info->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 =
+ guest_info->legacy_acpi_table_size +
+ ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
+ int legacy_table_size =
+ ROUND_UP(tables->table_data->len - aml_len + legacy_aml_len,
+ ACPI_BUILD_ALIGN_SIZE);
+ if (tables->table_data->len > legacy_table_size) {
+ /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
+ error_report("Warning: migration may not work.");
+ }
+ g_array_set_size(tables->table_data, legacy_table_size);
+ } else {
+ /* Make sure we have a buffer in case we need to resize the tables. */
+ if (tables->table_data->len > ACPI_BUILD_TABLE_SIZE / 2) {
+ /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
+ error_report("Warning: ACPI tables are larger than 64k.");
+ error_report("Warning: migration may not work.");
+ error_report("Warning: please remove CPUs, NUMA nodes, "
+ "memory slots or PCI bridges.");
+ }
+ acpi_align_size(tables->table_data, ACPI_BUILD_TABLE_SIZE);
+ }
- acpi_align_size(tables->linker, 0x1000);
+ acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
diff --git a/hw/i386/acpi-dsdt.dsl b/hw/i386/acpi-dsdt.dsl
index 3cc0ea0f9a..6ba017014a 100644
--- a/hw/i386/acpi-dsdt.dsl
+++ b/hw/i386/acpi-dsdt.dsl
@@ -181,57 +181,45 @@ DefinitionBlock (
Scope(\_SB) {
Scope(PCI0) {
- Name(_PRT, Package() {
- /* PCI IRQ routing table, example from ACPI 2.0a specification,
- section 6.2.8.1 */
- /* Note: we provide the same info as the PCI routing
- table of the Bochs BIOS */
-
-#define prt_slot(nr, lnk0, lnk1, lnk2, lnk3) \
- Package() { nr##ffff, 0, lnk0, 0 }, \
- Package() { nr##ffff, 1, lnk1, 0 }, \
- Package() { nr##ffff, 2, lnk2, 0 }, \
- Package() { nr##ffff, 3, lnk3, 0 }
-
-#define prt_slot0(nr) prt_slot(nr, LNKD, LNKA, LNKB, LNKC)
-#define prt_slot1(nr) prt_slot(nr, LNKA, LNKB, LNKC, LNKD)
-#define prt_slot2(nr) prt_slot(nr, LNKB, LNKC, LNKD, LNKA)
-#define prt_slot3(nr) prt_slot(nr, LNKC, LNKD, LNKA, LNKB)
-
- prt_slot0(0x0000),
- /* Device 1 is power mgmt device, and can only use irq 9 */
- prt_slot(0x0001, LNKS, LNKB, LNKC, LNKD),
- prt_slot2(0x0002),
- prt_slot3(0x0003),
- prt_slot0(0x0004),
- prt_slot1(0x0005),
- prt_slot2(0x0006),
- prt_slot3(0x0007),
- prt_slot0(0x0008),
- prt_slot1(0x0009),
- prt_slot2(0x000a),
- prt_slot3(0x000b),
- prt_slot0(0x000c),
- prt_slot1(0x000d),
- prt_slot2(0x000e),
- prt_slot3(0x000f),
- prt_slot0(0x0010),
- prt_slot1(0x0011),
- prt_slot2(0x0012),
- prt_slot3(0x0013),
- prt_slot0(0x0014),
- prt_slot1(0x0015),
- prt_slot2(0x0016),
- prt_slot3(0x0017),
- prt_slot0(0x0018),
- prt_slot1(0x0019),
- prt_slot2(0x001a),
- prt_slot3(0x001b),
- prt_slot0(0x001c),
- prt_slot1(0x001d),
- prt_slot2(0x001e),
- prt_slot3(0x001f),
- })
+ Method (_PRT, 0) {
+ Store(Package(128) {}, Local0)
+ Store(Zero, Local1)
+ While(LLess(Local1, 128)) {
+ // slot = pin >> 2
+ Store(ShiftRight(Local1, 2), Local2)
+
+ // lnk = (slot + pin) & 3
+ Store(And(Add(Local1, Local2), 3), Local3)
+ If (LEqual(Local3, 0)) {
+ Store(Package(4) { Zero, Zero, LNKD, Zero }, Local4)
+ }
+ If (LEqual(Local3, 1)) {
+ // device 1 is the power-management device, needs SCI
+ If (LEqual(Local1, 4)) {
+ Store(Package(4) { Zero, Zero, LNKS, Zero }, Local4)
+ } Else {
+ Store(Package(4) { Zero, Zero, LNKA, Zero }, Local4)
+ }
+ }
+ If (LEqual(Local3, 2)) {
+ Store(Package(4) { Zero, Zero, LNKB, Zero }, Local4)
+ }
+ If (LEqual(Local3, 3)) {
+ Store(Package(4) { Zero, Zero, LNKC, Zero }, Local4)
+ }
+
+ // Complete the interrupt routing entry:
+ // Package(4) { 0x[slot]FFFF, [pin], [link], 0) }
+
+ Store(Or(ShiftLeft(Local2, 16), 0xFFFF), Index(Local4, 0))
+ Store(And(Local1, 3), Index(Local4, 1))
+ Store(Local4, Index(Local0, Local1))
+
+ Increment(Local1)
+ }
+
+ Return(Local0)
+ }
}
Field(PCI0.ISA.P40C, ByteAcc, NoLock, Preserve) {
diff --git a/hw/i386/acpi-dsdt.hex.generated b/hw/i386/acpi-dsdt.hex.generated
index ee490e89c3..6c8a1fcdfb 100644
--- a/hw/i386/acpi-dsdt.hex.generated
+++ b/hw/i386/acpi-dsdt.hex.generated
@@ -3,12 +3,12 @@ static unsigned char AcpiDsdtAmlCode[] = {
0x53,
0x44,
0x54,
-0x93,
-0x11,
+0xf7,
+0xa,
0x0,
0x0,
0x1,
-0xf5,
+0x2e,
0x42,
0x58,
0x50,
@@ -31,9 +31,9 @@ static unsigned char AcpiDsdtAmlCode[] = {
0x4e,
0x54,
0x4c,
-0x15,
-0x11,
0x13,
+0x9,
+0x12,
0x20,
0x10,
0x49,
@@ -1439,1419 +1439,68 @@ static unsigned char AcpiDsdtAmlCode[] = {
0xa4,
0x0,
0x10,
-0x4a,
-0xa0,
+0x4e,
+0x36,
0x5f,
0x53,
0x42,
0x5f,
0x10,
-0x47,
-0x74,
+0x4b,
+0xa,
0x50,
0x43,
0x49,
0x30,
-0x8,
+0x14,
+0x44,
+0xa,
0x5f,
0x50,
0x52,
0x54,
-0x12,
-0x4b,
-0x73,
-0x80,
-0x12,
-0xb,
-0x4,
-0xb,
-0xff,
-0xff,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xb,
-0x4,
-0xb,
-0xff,
-0xff,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xc,
-0x4,
-0xb,
-0xff,
-0xff,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xc,
-0x4,
-0xb,
-0xff,
-0xff,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x53,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x2,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x2,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x2,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x2,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x3,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x3,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x3,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x3,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x4,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x4,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x4,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x4,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x5,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x5,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x5,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x5,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x6,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x6,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x6,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x6,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
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-0xff,
-0x17,
-0x0,
-0x0,
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-0x4b,
-0x43,
-0x0,
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-0xd,
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-0x4b,
-0x44,
-0x0,
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-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x17,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x17,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
+0x70,
0x12,
-0xd,
+0x9,
0x4,
-0xc,
-0xff,
-0xff,
-0x18,
0x0,
0x0,
0x4c,
@@ -2859,456 +1508,115 @@ static unsigned char AcpiDsdtAmlCode[] = {
0x4b,
0x44,
0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x18,
-0x0,
+0x64,
+0xa0,
+0x24,
+0x93,
+0x63,
0x1,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x18,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x18,
-0x0,
+0xa0,
+0x11,
+0x93,
+0x61,
0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x19,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xd,
0x4,
-0xc,
-0xff,
-0xff,
-0x19,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x19,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x19,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
+0x70,
0x12,
-0xd,
+0x9,
0x4,
-0xc,
-0xff,
-0xff,
-0x1a,
0x0,
0x0,
0x4c,
0x4e,
0x4b,
-0x42,
+0x53,
0x0,
-0x12,
+0x64,
+0xa1,
0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1a,
-0x0,
-0x1,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
+0x70,
0x12,
-0xe,
+0x9,
0x4,
-0xc,
-0xff,
-0xff,
-0x1a,
-0x0,
-0xa,
-0x2,
-0x4c,
-0x4e,
-0x4b,
-0x44,
0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1a,
0x0,
-0xa,
-0x3,
0x4c,
0x4e,
0x4b,
0x41,
0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1b,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
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-0xff,
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-0x4e,
-0x4b,
-0x44,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1b,
-0x0,
+0x64,
+0xa0,
+0x11,
+0x93,
+0x63,
0xa,
0x2,
-0x4c,
-0x4e,
-0x4b,
-0x41,
-0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1b,
-0x0,
-0xa,
-0x3,
-0x4c,
-0x4e,
-0x4b,
-0x42,
-0x0,
-0x12,
-0xd,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1c,
-0x0,
-0x0,
-0x4c,
-0x4e,
-0x4b,
-0x44,
-0x0,
+0x70,
0x12,
-0xd,
+0x9,
0x4,
-0xc,
-0xff,
-0xff,
-0x1c,
0x0,
-0x1,
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-0x4e,
-0x4b,
-0x41,
0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1c,
-0x0,
-0xa,
-0x2,
0x4c,
0x4e,
0x4b,
0x42,
0x0,
-0x12,
-0xe,
-0x4,
-0xc,
-0xff,
-0xff,
-0x1c,
-0x0,
+0x64,
+0xa0,
+0x11,
+0x93,
+0x63,
0xa,
0x3,
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-0x4e,
-0x4b,
-0x43,
-0x0,
-0x12,
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-0xff,
-0xff,
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+0x64,
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0x0,
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+0x61,
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-0xff,
-0xff,
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-0xff,
-0xff,
-0x1f,
0x0,
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-0x4b,
-0x41,
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-0xff,
-0xff,
-0x1f,
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diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 7081c08a69..9694f88057 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -61,6 +61,7 @@ static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
static bool has_pci_info;
static bool has_acpi_build = true;
+static int legacy_acpi_table_size;
static bool smbios_defaults = true;
static bool smbios_legacy_mode;
/* Make sure that guest addresses aligned at 1Gbyte boundaries get mapped to
@@ -163,6 +164,7 @@ static void pc_init1(MachineState *machine,
guest_info = pc_guest_info_init(below_4g_mem_size, above_4g_mem_size);
guest_info->has_acpi_build = has_acpi_build;
+ guest_info->legacy_acpi_table_size = legacy_acpi_table_size;
guest_info->has_pci_info = has_pci_info;
guest_info->isapc_ram_fw = !pci_enabled;
@@ -297,6 +299,23 @@ static void pc_init_pci(MachineState *machine)
static void pc_compat_2_0(MachineState *machine)
{
+ /* This value depends on the actual DSDT and SSDT compiled into
+ * the source QEMU; unfortunately it depends on the binary and
+ * not on the machine type, so we cannot make pc-i440fx-1.7 work on
+ * both QEMU 1.7 and QEMU 2.0.
+ *
+ * Large variations cause migration to fail for more than one
+ * consecutive value of the "-smp" maxcpus option.
+ *
+ * For small variations of the kind caused by different iasl versions,
+ * the 4k rounding usually leaves slack. However, there could be still
+ * one or two values that break. For QEMU 1.7 and QEMU 2.0 the
+ * slack is only ~10 bytes before one "-smp maxcpus" value breaks!
+ *
+ * 6652 is valid for QEMU 2.0, the right value for pc-i440fx-1.7 on
+ * QEMU 1.7 it is 6414. For RHEL/CentOS 7.0 it is 6418.
+ */
+ legacy_acpi_table_size = 6652;
smbios_legacy_mode = true;
has_reserved_memory = false;
}
@@ -307,6 +326,7 @@ static void pc_compat_1_7(MachineState *machine)
smbios_defaults = false;
gigabyte_align = false;
option_rom_has_mr = true;
+ legacy_acpi_table_size = 6414;
x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
}
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index f55196150c..c39ee98933 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -155,6 +155,11 @@ static void pc_q35_init(MachineState *machine)
guest_info->has_acpi_build = has_acpi_build;
guest_info->has_reserved_memory = has_reserved_memory;
+ /* Migration was not supported in 2.0 for Q35, so do not bother
+ * with this hack (see hw/i386/acpi-build.c).
+ */
+ guest_info->legacy_acpi_table_size = 0;
+
if (smbios_defaults) {
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* These values are guest ABI, do not change */
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 1c0c382d8c..f4b9b2bb71 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -94,6 +94,7 @@ struct PcGuestInfo {
uint64_t *node_mem;
uint64_t *node_cpu;
FWCfgState *fw_cfg;
+ int legacy_acpi_table_size;
bool has_acpi_build;
bool has_reserved_memory;
};
diff --git a/tests/acpi-test-data/pc/DSDT b/tests/acpi-test-data/pc/DSDT
index 7ed03fd37e..d37ec34454 100644
--- a/tests/acpi-test-data/pc/DSDT
+++ b/tests/acpi-test-data/pc/DSDT
Binary files differ
diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 62771f7608..045eb27577 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -487,7 +487,11 @@ static GString *normalize_asl(gchar *asl_code)
/* strip comments (different generation days) */
comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
if (comment) {
- asl = g_string_erase(asl, 0, comment + sizeof(COMMENT_END) - asl->str);
+ comment += strlen(COMMENT_END);
+ while (*comment == '\n') {
+ comment++;
+ }
+ asl = g_string_erase(asl, 0, comment - asl->str);
}
/* strip def block name (it has file path in it) */
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 04:15:43 +0000