[PULL 3/6] vfio-user: clarify partial message handling

Cédric Le Goater posted 6 patches 1 week, 3 days ago
Maintainers: John Levon <john.levon@nutanix.com>, Thanos Makatos <thanos.makatos@nutanix.com>, "Cédric Le Goater" <clg@redhat.com>
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[PULL 3/6] vfio-user: clarify partial message handling
Posted by Cédric Le Goater 1 week, 3 days ago
From: John Levon <john.levon@nutanix.com>

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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>
---
 hw/vfio-user/proxy.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hw/vfio-user/proxy.c b/hw/vfio-user/proxy.c
index 75845d7c89ecbc2534c6f1e3271d6a0dfff8e5cb..82c76c66654a1b7e03b281bdac5f602846b33ac6 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;
-- 
2.52.0