[Qemu-devel] [PATCH v3 13/29] migration/ram: ramblock_recv_bitmap_test_byte_offset

[Dr. David Alan Gilbert (git)]

From: "Dr. David Alan Gilbert" <address@hidden>

Utility for testing the map when you already know the offset
in the RAMBlock.

Signed-off-by: Dr. David Alan Gilbert <address@hidden>
---
 migration/ram.c | 5 +++++
 migration/ram.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 8333d8e35e..8db5e80500 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -169,6 +169,11 @@ int ramblock_recv_bitmap_test(RAMBlock *rb, void 
*host_addr)
                     rb->receivedmap);
 }
 
+bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset)
+{
+    return test_bit(byte_offset >> TARGET_PAGE_BITS, rb->receivedmap);
+}
+
 void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr)
 {
     set_bit_atomic(ramblock_recv_bitmap_offset(host_addr, rb), 
rb->receivedmap);
diff --git a/migration/ram.h b/migration/ram.h
index f3a227b4fc..63a37c4683 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -60,6 +60,7 @@ int ram_postcopy_incoming_init(MigrationIncomingState *mis);
 void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);
 
 int ramblock_recv_bitmap_test(RAMBlock *rb, void *host_addr);
+bool ramblock_recv_bitmap_test_byte_offset(RAMBlock *rb, uint64_t byte_offset);
 void ramblock_recv_bitmap_set(RAMBlock *rb, void *host_addr);
 void ramblock_recv_bitmap_set_range(RAMBlock *rb, void *host_addr, size_t nr);
 
-- 
2.14.3