hw/i386/pc: Remove PCMachineClass::resizable_acpi_blob

PCMachineClass::resizable_acpi_blob was only used by the
pc-i440fx-2.2 machine, which got removed. It is now always
true. Remove it, simplifying acpi_build().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240617071118.60464-18-philmd@linaro.org>

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index f5d74e2b4be7379c19907d69bcf92f8c7f0f9781..eafc3761c875839e64fd9e81163421dc4af56540 100644 (file)
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2687,16 +2687,6 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
      * keep the table size stable for all (max_cpus, max_memory_slots)
      * combinations.
      */
-    /* 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->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE);

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 21a9b7a5aec357227b6ca87d3b38faa8733e3aab..a6d50df500df082ab8ed20d774b3baf76e663477 100644 (file)
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1774,7 +1774,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     pcmc->acpi_data_size = 0x20000 + 0x8000;
     pcmc->pvh_enabled = true;
     pcmc->kvmclock_create_always = true;
-    pcmc->resizable_acpi_blob = true;
     x86mc->apic_xrupt_override = true;
     assert(!mc->get_hotplug_handler);
     mc->get_hotplug_handler = pc_get_hotplug_handler;

diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 155a02b1b569403ebaa81249c3634185d403bb3b..d01ddc46184ab81cf2b1987e51fb63c293302652 100644 (file)
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -125,9 +125,6 @@ struct PCMachineClass {
     /* create kvmclock device even when KVM PV features are not exposed */
     bool kvmclock_create_always;
 
-    /* resizable acpi blob compat */
-    bool resizable_acpi_blob;
-
     /*
      * whether the machine type implements broken 32-bit address space bound
      * check for memory.