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pc-dimm: error out if memory hotplug is not enabled 

fixes QEMU abort in case it's started without memory
hotplug enabled.

as result of fix it will print following messages:
"
-device pc-dimm,id=d1,memdev=m1: memory hotplug is not enabled, enable it on startup
-device pc-dimm,id=d1,memdev=m1: Device 'pc-dimm' could not be initialized
"

Also fixup assert condition to detect hotplug address
space overflow.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reported-by:  Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-30 12:43:29 +02:00 committed by Michael S. Tsirkin
parent 0462faee67
commit 9b79a76cdb
1 changed files with 7 additions and 1 deletions
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8
hw/mem/pc-dimm.c
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@ -146,7 +146,13 @@ uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
uint64_t new_addr, ret = 0;
uint64_t address_space_end = address_space_start + address_space_size;
assert(address_space_end > address_space_size);
if (!address_space_size) {
error_setg(errp, "memory hotplug is not enabled, "
"please add maxmem option");
goto out;
}
assert(address_space_end > address_space_start);
object_child_foreach(qdev_get_machine(), pc_dimm_built_list, &list);
if (hint) {