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| author | Igor Mammedov <imammedo@redhat.com> | 2016-10-19 14:05:34 +0200 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2016-10-24 17:29:15 -0200 |
| commit | 6a91cf04a1177f47a18d3c25873513a1ebfc2fcb (patch) | |
| tree | 744166d8311cc23d930aa0a2752638fd6f3e0ff5 /hw/acpi/cpu_hotplug.c | |
| parent | f9dc175d84802e9a00161bc8d4356b90d6c52125 (diff) | |
| download | qemu-6a91cf04a1177f47a18d3c25873513a1ebfc2fcb.tar.gz | |
pc: Leave max apic_id_limit only in legacy cpu hotplug code
That's enough to make old code that depends on it
to prevent QEMU starting with more than 255 CPUs.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'hw/acpi/cpu_hotplug.c')
| -rw-r--r-- | hw/acpi/cpu_hotplug.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/acpi/cpu_hotplug.c b/hw/acpi/cpu_hotplug.c index c2ab9b8b2c..f15a2402fc 100644 --- a/hw/acpi/cpu_hotplug.c +++ b/hw/acpi/cpu_hotplug.c @@ -15,6 +15,7 @@ #include "qapi/error.h" #include "qom/cpu.h" #include "hw/i386/pc.h" +#include "qemu/error-report.h" #define CPU_EJECT_METHOD "CPEJ" #define CPU_MAT_METHOD "CPMA" @@ -236,7 +237,11 @@ void build_legacy_cpu_hotplug_aml(Aml *ctx, MachineState *machine, /* The current AML generator can cover the APIC ID range [0..255], * inclusive, for VCPU hotplug. */ QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256); - g_assert(pcms->apic_id_limit <= ACPI_CPU_HOTPLUG_ID_LIMIT); + if (pcms->apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) { + error_report("max_cpus is too large. APIC ID of last CPU is %u", + pcms->apic_id_limit - 1); + exit(1); + } /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */ dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE)); |