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-rw-r--r--qapi/block-core.json4
1 files changed, 3 insertions, 1 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 61124431d8..0d43d4f37c 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2890,11 +2890,13 @@
# @latency-ns: emulated latency (in nanoseconds) in processing
# requests. Default to zero which completes requests immediately.
# (Since 2.4)
+# @read-zeroes: if true, reads from the device produce zeroes; if false, the
+# buffer is left unchanged. (default: false; since: 4.1)
#
# Since: 2.9
##
{ 'struct': 'BlockdevOptionsNull',
- 'data': { '*size': 'int', '*latency-ns': 'uint64' } }
+ 'data': { '*size': 'int', '*latency-ns': 'uint64', '*read-zeroes': 'bool' } }
##
# @BlockdevOptionsNVMe: