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spapr: Initialize hotplug memory address space

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Initialize a hotplug memory region under which all the hotplugged
memory is accommodated. Also enable memory hotplug by setting
CONFIG_MEM_HOTPLUG.

Modelled on i386 memory hotplug.

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 2015-06-29 14:14:27 +05:30 • committed by David Gibson
parent 9d1852ce11
commit 4a1c9cf007
3 changed files with 31 additions and 0 deletions
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12
include/hw/ppc/spapr.h
View file

@ -5,6 +5,7 @@
#include "hw/boards.h"
#include "hw/ppc/xics.h"
#include "hw/ppc/spapr_drc.h"
#include "hw/mem/pc-dimm.h"
struct VIOsPAPRBus;
struct sPAPRPHBState;
@ -76,6 +77,7 @@ struct sPAPRMachineState {
/*< public >*/
char *kvm_type;
MemoryHotplugState hotplug_memory;
};
#define H_SUCCESS 0
@ -610,4 +612,14 @@ int spapr_rtc_import_offset(DeviceState *dev, int64_t legacy_offset);
#define SPAPR_MEMORY_BLOCK_SIZE (1 << 28) /* 256MB */
/*
* This defines the maximum number of DIMM slots we can have for sPAPR
* guest. This is not defined by sPAPR but we are defining it to 32 slots
* based on default number of slots provided by PowerPC kernel.
*/
#define SPAPR_MAX_RAM_SLOTS 32
/* 1GB alignment for hotplug memory region */
#define SPAPR_HOTPLUG_MEM_ALIGN (1ULL << 30)
#endif /* !defined (__HW_SPAPR_H__) */