This new helper makes possible to search for a MemoryRegion matching a given name within a root MemoryRegion.
Signed-off-by: Eric Auger <eric.au...@redhat.com> --- include/exec/memory.h | 11 +++++++++++ memory.c | 16 ++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index f97b1f4..f62e5b5 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -1217,6 +1217,17 @@ MemoryRegionSection memory_region_find(MemoryRegion *mr, hwaddr addr, uint64_t size); /** + * memory_region_find_by_name: Locates the first #MemoryRegion within @mr + * whose name matches @name + * + * @mr: the root MemoryRegion + * @name: name of the target MemoryRegion + * + * Returns the matched memory region or NULL + */ +MemoryRegion *memory_region_find_by_name(MemoryRegion *mr, const char *name); + +/** * memory_global_dirty_log_sync: synchronize the dirty log for all memory * * Synchronizes the dirty page log for all address spaces. diff --git a/memory.c b/memory.c index 00a0ebe..3701b4f 100644 --- a/memory.c +++ b/memory.c @@ -2166,6 +2166,22 @@ MemoryRegionSection memory_region_find(MemoryRegion *mr, return ret; } +MemoryRegion *memory_region_find_by_name(MemoryRegion *root, + const char *name) +{ + MemoryRegion *other; + + QTAILQ_FOREACH(other, &root->subregions, subregions_link) { + if (!strcmp(other->name, name)) { + memory_region_ref(other); + return other; + } else { + memory_region_find_by_name(other, name); + } + } + return NULL; +} + bool memory_region_present(MemoryRegion *container, hwaddr addr) { MemoryRegion *mr; -- 1.9.1