Merge remote-tracking branch 'luiz/queue/qmp' into staging

# By Lei Li (3) and others
# Via Luiz Capitulino
* luiz/queue/qmp:
  QAPI: Introduce memchar-read QMP command
  QAPI: Introduce memchar-write QMP command
  qemu-char: Add new char backend CirMemCharDriver
  docs: document virtio-balloon stats
  balloon: re-enable balloon stats
  balloon: drop old stats code & API
  block: Monitor command commit neglects to report some errors

1 files changed, 39 insertions, 0 deletions

diff --git a/hmp-commands.hx b/hmp-commands.hx
index 0934b9b915..bdd48f3469 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -837,6 +837,45 @@ STEXI
 @item nmi @var{cpu}
 @findex nmi
 Inject an NMI on the given CPU (x86 only).
+
+ETEXI
+
+    {
+        .name       = "memchar_write",
+        .args_type  = "device:s,data:s",
+        .params     = "device data",
+        .help       = "Provide writing interface for CirMemCharDriver. Write"
+                      "'data' to it.",
+        .mhandler.cmd = hmp_memchar_write,
+    },
+
+STEXI
+@item memchar_write @var{device} @var{data}
+@findex memchar_write
+Provide writing interface for CirMemCharDriver. Write @var{data}
+to char device 'memory'.
+
+ETEXI
+
+    {
+        .name       = "memchar_read",
+        .args_type  = "device:s,size:i",
+        .params     = "device size",
+        .help       = "Provide read interface for CirMemCharDriver. Read from"
+                      "it and return the data with size.",
+        .mhandler.cmd = hmp_memchar_read,
+    },
+
+STEXI
+@item memchar_read @var{device}
+@findex memchar_read
+Provide read interface for CirMemCharDriver. Read from char device
+'memory' and return the data.
+
+@var{size} is the size of data want to read from. Refer to unencoded
+size of the raw data, would adjust to the init size of the memchar
+if the requested size is larger than it.
+
 ETEXI
 
     {