motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 08:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

pc: Add 'etc/boot-cpus' fw_cfg file for machine with more than 255 CPUs

Browse source 
Currently firmware uses 1 byte at 0x5F offset in RTC CMOS
to get number of CPUs present at boot. However 1 byte is
not enough to handle more than 255 CPUs.  So add a new
fw_cfg file that would allow QEMU to tell it.
For compat reasons add file only for machine types that
support 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>
This commit is contained in:
Igor Mammedov 2016-10-20 16:58:42 +02:00 • committed by Eduardo Habkost
parent 079019f2e3
commit 080ac219cc
2 changed files with 31 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/hw/i386/pc.h
View file

@ -37,6 +37,7 @@
/**
* PCMachineState:
* @acpi_dev: link to ACPI PM device that performs ACPI hotplug handling
* @boot_cpus_le: number of present VCPUs, referenced by 'etc/boot-cpus' fw_cfg
*/
struct PCMachineState {
/*< private >*/
@ -69,6 +70,7 @@ struct PCMachineState {
bool apic_xrupt_override;
unsigned apic_id_limit;
CPUArchIdList *possible_cpus;
uint16_t boot_cpus_le;
/* NUMA information: */
uint64_t numa_nodes;