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spapr: convert boot CPUs into CPU core devices

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Introduce sPAPRMachineClass.dr_cpu_enabled to indicate support for
CPU core hotplug. Initialize boot time CPUs as core deivces and prevent
topologies that result in partially filled cores. Both of these are done
only if CPU core hotplug is supported.

Note: An unrelated change in the call to xics_system_init() is done
in this patch as it makes sense to use the local variable smt introduced
in this patch instead of kvmppc_smt_threads() call here.

TODO: We derive sPAPR core type by looking at -cpu <model>. However
we don't take care of "compat=" feature yet for boot time as well
as hotplug CPUs.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bharata B Rao 2016-06-10 06:29:03 +05:30 • committed by David Gibson
parent afd10a0fa6
commit 94a94e4c49
4 changed files with 126 additions and 10 deletions
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2
include/hw/ppc/spapr.h
View file

@ -38,6 +38,7 @@ struct sPAPRMachineClass {
/*< public >*/
bool dr_lmb_enabled; /* enable dynamic-reconfig/hotplug of LMBs */
bool dr_cpu_enabled; /* enable dynamic-reconfig/hotplug of CPUs */
bool use_ohci_by_default; /* use USB-OHCI instead of XHCI */
};
@ -81,6 +82,7 @@ struct sPAPRMachineState {
/*< public >*/
char *kvm_type;
MemoryHotplugState hotplug_memory;
Object **cores;
};
#define H_SUCCESS 0

3
include/hw/ppc/spapr_cpu_core.h
View file

@ -26,4 +26,7 @@ typedef struct sPAPRCPUCore {
ObjectClass *cpu_class;
} sPAPRCPUCore;
void spapr_core_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp);
char *spapr_get_cpu_core_type(const char *model);
#endif