diff options
| author | Laszlo Ersek <lersek@redhat.com> | 2014-03-17 17:05:17 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-03-18 16:16:46 +0200 |
| commit | 2fd71f1be2a2554b790fa63fc14b6b4c7683f1f3 (patch) | |
| tree | 86944865d924259ad5c0049f97301b6078a15cda | |
| parent | d07e0e9cddf02dd2abedbbf7ab0e069c8f5dabfd (diff) | |
i386/acpi-build: support hotplug of VCPU with APIC ID 0xFF
Building on the previous patch, raise the maximal count of processor
objects / NTFY branches / CPON elements from 255 to 256. This allows the
VCPU with APIC ID 0xFF to be hotplugged.
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/acpi-build.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index a5039d4e98..1dcfb25c28 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -999,11 +999,16 @@ build_ssdt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, PcPciInfo *pci, PcGuestInfo *guest_info) { - int acpi_cpus = MIN(0xff, guest_info->apic_id_limit); + unsigned acpi_cpus = guest_info->apic_id_limit; int ssdt_start = table_data->len; uint8_t *ssdt_ptr; int i; + /* 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(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT); + /* Copy header and patch values in the S3_ / S4_ / S5_ packages */ ssdt_ptr = acpi_data_push(table_data, sizeof(ssdp_misc_aml)); memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml)); |