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-rw-r--r--hw/i386/acpi-build.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index a15585717a..45a2ccfc4c 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2860,7 +2860,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
          */
         int legacy_aml_len =
             pcmc->legacy_acpi_table_size +
-            ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
+            ACPI_BUILD_LEGACY_CPU_AML_SIZE * pcms->apic_id_limit;
         int legacy_table_size =
             ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
                      ACPI_BUILD_ALIGN_SIZE);