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memory: MemoryRegion: factor out subregion add functionality

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Split off the core looping code that actually adds subregions into
it's own fn. This prepares support for Memory Region qomification
where setting the MR address or parent via QOM will back onto this more
minimal function.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Rename new function. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Crosthwaite 2014-06-05 23:14:44 -07:00 committed by Paolo Bonzini
parent c9299e2fe7
commit 0598701a49
1 changed files with 12 additions and 6 deletions
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18
memory.c
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@ -1423,18 +1423,15 @@ void memory_region_del_eventfd(MemoryRegion *mr,
memory_region_transaction_commit();
}
static void memory_region_add_subregion_common(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion)
static void memory_region_update_parent_subregions(MemoryRegion *subregion)
{
hwaddr offset = subregion->addr;
MemoryRegion *mr = subregion->parent;
MemoryRegion *other;
memory_region_transaction_begin();
assert(!subregion->parent);
memory_region_ref(subregion);
subregion->parent = mr;
subregion->addr = offset;
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
if (subregion->may_overlap || other->may_overlap) {
continue;
@ -1468,6 +1465,15 @@ done:
memory_region_transaction_commit();
}
static void memory_region_add_subregion_common(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion)
{
assert(!subregion->parent);
subregion->parent = mr;
subregion->addr = offset;
memory_region_update_parent_subregions(subregion);
}
void memory_region_add_subregion(MemoryRegion *mr,
hwaddr offset,