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i386/acpi-build: support hotplug of VCPU with APIC ID 0xFF

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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>
This commit is contained in:
Laszlo Ersek 2014-03-17 17:05:17 +01:00 committed by Michael S. Tsirkin
parent d07e0e9cdd
commit 2fd71f1be2
1 changed files with 6 additions and 1 deletions
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7
hw/i386/acpi-build.c
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@ -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));