Commit df88255543 for qemu.org

commit df88255543667e7f14ac34d97e0ced142af18bdf
Author: Christian Schoenebeck <qemu_oss@crudebyte.com>
Date:   Sat Jun 13 16:55:49 2026 +0200

    tests/9p: increase P9_MAX_SIZE for test client

    Increase the maximum 9P message size ('msize') of 9p test client from
    4k to 32k to support larger messages.

    This is needed for the xattr tests being added with the subsequent
    patches which are going to transmit xattrs of size 8k. It would have
    also been possible to send them in multiple chunks, however let's not
    overcomplicate things.

    This new msize is still reasonable small compared to common msize
    values on production systems.

    Link: https://lore.kernel.org/qemu-devel/2dcb1243c80ea97d085af5171785850cf012be36.1781361555.git.qemu_oss@crudebyte.com
    Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>

diff --git a/tests/qtest/libqos/virtio-9p-client.h b/tests/qtest/libqos/virtio-9p-client.h
index c432b0daee..4b04324503 100644
--- a/tests/qtest/libqos/virtio-9p-client.h
+++ b/tests/qtest/libqos/virtio-9p-client.h
@@ -21,7 +21,8 @@
 #include "qgraph.h"
 #include "tests/qtest/libqtest-single.h"

-#define P9_MAX_SIZE 4096 /* Max size of a T-message or R-message */
+/* Max size of a T-message or R-message */
+#define P9_MAX_SIZE (32 * 1024)

 typedef struct {
     QTestState *qts;