Add an helper to change the priority of a memory region at runtime.
Suggested-by: Alexey Kardashevskiy <a...@ozlabs.ru>
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
include/exec/memory.h | 10 ++++++++++
softmmu/memory.c | 11 +++++++++++
2 files changed, 21 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 5728a681b27..6ad9ff83457 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1983,6 +1983,16 @@ void memory_region_set_size(MemoryRegion *mr, uint64_t
size);
void memory_region_set_alias_offset(MemoryRegion *mr,
hwaddr offset);
+/**
+ * memory_region_set_priority: dynamically update the priority of a region.
+ *
+ * Dynamically updates the priority of a region.
+ *
+ * @mr: the #MemoryRegion to be updated.
+ * @priority: priority of the region.
+ */
+void memory_region_set_priority(MemoryRegion *mr, int priority);
+
/**
* memory_region_present: checks if an address relative to a @container
* translates into #MemoryRegion within @container
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 4fbeee02dc7..fdba938f299 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -2504,6 +2504,17 @@ void memory_region_set_size(MemoryRegion *mr, uint64_t
size)
memory_region_transaction_commit();
}
+void memory_region_set_priority(MemoryRegion *mr, int priority)
+{
+ if (priority == mr->priority) {
+ return;
+ }
+ memory_region_transaction_begin();
+ mr->priority = priority;
+ memory_region_update_pending = true;
+ memory_region_transaction_commit();
+}
+
static void memory_region_readd_subregion(MemoryRegion *mr)
{
MemoryRegion *container = mr->container;
--
2.26.2
