From: John Levon <john.levon@nutanix.com>
Date: Wed, 3 Dec 2025 10:03:12 +0000 (+0530)
Subject: vfio-user: clarify partial message handling
X-Git-Tag: v10.2.0-rc3~6^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=356c7b175258f29429fb91a7641f775080ab6b49;p=thirdparty%2Fqemu.git

vfio-user: clarify partial message handling

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Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Link: https://lore.kernel.org/qemu-devel/20251203100316.3604456-3-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---

diff --git a/hw/vfio-user/proxy.c b/hw/vfio-user/proxy.c
index 75845d7c89..82c76c6665 100644
--- a/hw/vfio-user/proxy.c
+++ b/hw/vfio-user/proxy.c
@@ -362,7 +362,10 @@ static int vfio_user_recv_one(VFIOUserProxy *proxy, Error **errp)
     while (msgleft > 0) {
         ret = qio_channel_read(proxy->ioc, data, msgleft, errp);
 
-        /* prepare to complete read on next iternation */
+        /*
+         * We'll complete this read on the next go around; keep track of the
+         * partial message until then.
+         */
         if (ret == QIO_CHANNEL_ERR_BLOCK) {
             proxy->part_recv = msg;
             proxy->recv_left = msgleft;