Replace "iothread lock" with "BQL" in comments

The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL)
in their names. Update the code comments to use "BQL" instead of
"iothread lock".

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

3 files changed, 4 insertions, 4 deletions

diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index 41115d8919..fef3138d29 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -92,7 +92,7 @@ RAMBlock *qemu_ram_block_by_name(const char *name);
  *
  * By the time this function returns, the returned pointer is not protected
  * by RCU anymore.  If the caller is not within an RCU critical section and
- * does not hold the iothread lock, it must have other means of protecting the
+ * does not hold the BQL, it must have other means of protecting the
  * pointer, such as a reference to the memory region that owns the RAMBlock.
  */
 RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 48c11ca743..177be23db7 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1982,7 +1982,7 @@ int memory_region_get_fd(MemoryRegion *mr);
  *
  * Use with care; by the time this function returns, the returned pointer is
  * not protected by RCU anymore.  If the caller is not within an RCU critical
- * section and does not hold the iothread lock, it must have other means of
+ * section and does not hold the BQL, it must have other means of
  * protecting the pointer, such as a reference to the region that includes
  * the incoming ram_addr_t.
  *
@@ -1999,7 +1999,7 @@ MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset);
  *
  * Use with care; by the time this function returns, the returned pointer is
  * not protected by RCU anymore.  If the caller is not within an RCU critical
- * section and does not hold the iothread lock, it must have other means of
+ * section and does not hold the BQL, it must have other means of
  * protecting the pointer, such as a reference to the region that includes
  * the incoming ram_addr_t.
  *
diff --git a/include/exec/ramblock.h b/include/exec/ramblock.h
index 69c6a53902..3eb79723c6 100644
--- a/include/exec/ramblock.h
+++ b/include/exec/ramblock.h
@@ -34,7 +34,7 @@ struct RAMBlock {
     ram_addr_t max_length;
     void (*resized)(const char*, uint64_t length, void *host);
     uint32_t flags;
-    /* Protected by iothread lock.  */
+    /* Protected by the BQL.  */
     char idstr[256];
     /* RCU-enabled, writes protected by the ramlist lock */
     QLIST_ENTRY(RAMBlock) next;