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-rw-r--r--include/exec/memory.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 0ccfd3b42a..b61c84f62a 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1233,7 +1233,9 @@ void address_space_stq(AddressSpace *as, hwaddr addr, uint64_t val,
#endif
/* address_space_translate: translate an address range into an address space
- * into a MemoryRegion and an address range into that section
+ * into a MemoryRegion and an address range into that section. Should be
+ * called from an RCU critical section, to avoid that the last reference
+ * to the returned region disappears after address_space_translate returns.
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space