[Qemu-devel] [RFC PATCH RDMA support v4: 04/10] iterators for getting the RAMBlocks

[mrhines]

From: "Michael R. Hines" <address@hidden>

This introduces:
1. qemu_ram_foreach_block
2. qemu_ram_count_blocks

Both used in communicating the RAMBlocks
to each side for later memory registration.

Signed-off-by: Michael R. Hines <address@hidden>
---
 exec.c                    |   21 +++++++++++++++++++++
 include/exec/cpu-common.h |    6 ++++++
 2 files changed, 27 insertions(+)

diff --git a/exec.c b/exec.c
index 8a6aac3..a985da8 100644
--- a/exec.c
+++ b/exec.c
@@ -2629,3 +2629,24 @@ bool cpu_physical_memory_is_io(hwaddr phys_addr)
              memory_region_is_romd(section->mr));
 }
 #endif
+
+void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque)
+{
+    RAMBlock *block;
+
+    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
+        func(block->host, block->offset, block->length, opaque);
+    }
+}
+
+int qemu_ram_count_blocks(void)
+{
+    RAMBlock *block;
+    int total = 0;
+
+    QTAILQ_FOREACH(block, &ram_list.blocks, next) {
+        total++;
+    }
+
+    return total;
+}
diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index 2e5f11f..aea3fe0 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -119,6 +119,12 @@ extern struct MemoryRegion io_mem_rom;
 extern struct MemoryRegion io_mem_unassigned;
 extern struct MemoryRegion io_mem_notdirty;
 
+typedef void  (RAMBlockIterFunc)(void *host_addr, 
+    ram_addr_t offset, ram_addr_t length, void *opaque); 
+
+void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
+int qemu_ram_count_blocks(void);
+
 #endif
 
 #endif /* !CPU_COMMON_H */
-- 
1.7.10.4