1 files changed, 22 insertions, 5 deletions

diff --git a/include/system/ramblock.h b/include/system/ramblock.h
index 87e847e184..76694fe1b5 100644
--- a/include/system/ramblock.h
+++ b/include/system/ramblock.h
@@ -11,11 +11,6 @@
  *
  */
 
-/*
- * This header is for use by exec.c and memory.c ONLY.  Do not include it.
- * The functions declared here will be removed soon.
- */
-
 #ifndef SYSTEM_RAMBLOCK_H
 #define SYSTEM_RAMBLOCK_H
 
@@ -108,9 +103,31 @@ struct RamBlockAttributes {
     QLIST_HEAD(, RamDiscardListener) rdl_list;
 };
 
+/* @offset: the offset within the RAMBlock */
+int ram_block_discard_range(RAMBlock *rb, uint64_t offset, size_t length);
+/* @offset: the offset within the RAMBlock */
+int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t offset,
+                                        size_t length);
+
 RamBlockAttributes *ram_block_attributes_create(RAMBlock *ram_block);
 void ram_block_attributes_destroy(RamBlockAttributes *attr);
 int ram_block_attributes_state_change(RamBlockAttributes *attr, uint64_t offset,
                                       uint64_t size, bool to_discard);
 
+/**
+ * ram_block_is_pmem: Whether the RAM block is of persistent memory
+ */
+bool ram_block_is_pmem(RAMBlock *rb);
+
+static inline bool offset_in_ramblock(RAMBlock *b, ram_addr_t offset)
+{
+    return b && b->host && (offset < b->used_length);
+}
+
+static inline void *ramblock_ptr(RAMBlock *block, ram_addr_t offset)
+{
+    assert(offset_in_ramblock(block, offset));
+    return (char *)block->host + offset;
+}
+
 #endif