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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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18
hw/ppc/spapr.c
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@ -1562,6 +1562,24 @@ static void ppc_spapr_init(MachineState *machine)
memory_region_add_subregion(sysmem, 0, rma_region);
}
/* initialize hotplug memory address space */
if (machine->ram_size < machine->maxram_size) {
ram_addr_t hotplug_mem_size = machine->maxram_size - machine->ram_size;
if (machine->ram_slots > SPAPR_MAX_RAM_SLOTS) {
error_report("unsupported amount of memory slots: %"PRIu64,
machine->ram_slots);
exit(EXIT_FAILURE);
}
spapr->hotplug_memory.base = ROUND_UP(machine->ram_size,
SPAPR_HOTPLUG_MEM_ALIGN);
memory_region_init(&spapr->hotplug_memory.mr, OBJECT(spapr),
"hotplug-memory", hotplug_mem_size);
memory_region_add_subregion(sysmem, spapr->hotplug_memory.base,
&spapr->hotplug_memory.mr);
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "spapr-rtas.bin");
if (!filename) {
error_report("Could not find LPAR rtas '%s'", "spapr-rtas.bin");