diff options
| author | Bharata B Rao | 2015-06-29 10:44:27 +0200 |
|---|---|---|
| committer | David Gibson | 2015-09-23 02:51:10 +0200 |
| commit | 4a1c9cf0073e733b421e7b82ad673e7cf6ed8454 (patch) | |
| tree | 5a1f1733a3ad366cb77e43d796f2b91a53b6223f | |
| parent | spapr_drc: don't allow 'empty' DRCs to be unisolated or allocated (diff) | |
| download | qemu-4a1c9cf0073e733b421e7b82ad673e7cf6ed8454.tar.gz qemu-4a1c9cf0073e733b421e7b82ad673e7cf6ed8454.tar.xz qemu-4a1c9cf0073e733b421e7b82ad673e7cf6ed8454.zip | |
spapr: Initialize hotplug memory address space
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>
| -rw-r--r-- | default-configs/ppc64-softmmu.mak | 1 | ||||
| -rw-r--r-- | hw/ppc/spapr.c | 18 | ||||
| -rw-r--r-- | include/hw/ppc/spapr.h | 12 |
3 files changed, 31 insertions, 0 deletions
diff --git a/default-configs/ppc64-softmmu.mak b/default-configs/ppc64-softmmu.mak index ab62cc7ff0..e77cb1ac54 100644 --- a/default-configs/ppc64-softmmu.mak +++ b/default-configs/ppc64-softmmu.mak @@ -52,3 +52,4 @@ CONFIG_XICS_KVM=$(and $(CONFIG_PSERIES),$(CONFIG_KVM)) # For PReP CONFIG_MC146818RTC=y CONFIG_ISA_TESTDEV=y +CONFIG_MEM_HOTPLUG=y diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index d49f322fcc..2fb5e3643c 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -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"); diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 8a0a74d5d9..e882770db7 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -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__) */ |