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pc-dimm: introduce realize callback 

nvdimm needs to  check if the backend memory is large enough to contain
label data and init its memory region when the device is realized, so
introduce realize callback which is called after common dimm has been
realize

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Xiao Guangrong 2016-05-20 16:19:59 +08:00 committed by Michael S. Tsirkin
parent 3c3e88a814
commit 9f318f8f7e
2 changed files with 8 additions and 0 deletions
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5
hw/mem/pc-dimm.c
View File

@ -400,6 +400,7 @@ static void pc_dimm_init(Object *obj)
static void pc_dimm_realize(DeviceState *dev, Error **errp)
{
PCDIMMDevice *dimm = PC_DIMM(dev);
PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
if (!dimm->hostmem) {
error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
@ -412,6 +413,10 @@ static void pc_dimm_realize(DeviceState *dev, Error **errp)
dimm->node, nb_numa_nodes ? nb_numa_nodes : 1);
return;
}
if (ddc->realize) {
ddc->realize(dimm, errp);
}
}
static MemoryRegion *pc_dimm_get_memory_region(PCDIMMDevice *dimm)

3
include/hw/mem/pc-dimm.h
View File

@ -58,6 +58,8 @@ typedef struct PCDIMMDevice {
/**
* PCDIMMDeviceClass:
* @realize: called after common dimm is realized so that the dimm based
* devices get the chance to do specified operations.
* @get_memory_region: returns #MemoryRegion associated with @dimm which
* is directly mapped into the physical address space of guest
*/
@ -66,6 +68,7 @@ typedef struct PCDIMMDeviceClass {
DeviceClass parent_class;
/* public */
void (*realize)(PCDIMMDevice *dimm, Error **errp);
MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm);
} PCDIMMDeviceClass;