FAILED: patch "[PATCH] Revert "virtio_net: big mode skip the unmap check"" failed to apply to 6.10-stable tree

FAILED: patch "[PATCH] Revert "virtio_net: big mode skip the unmap check"" failed to apply to 6.10-stable tree

[gregkh]

The patch below does not apply to the 6.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.10.y
git checkout FETCH_HEAD
git cherry-pick -x 38eef112a8e547b8c207b2a521ad4b077d792100
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024091308-deceit-dingy-d575@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^..

Possible dependencies:

38eef112a8e5 ("Revert "virtio_net: big mode skip the unmap check"")
99c861b44eb1 ("virtio_net: xsk: rx: support recv merge mode")
a4e7ba702701 ("virtio_net: xsk: rx: support recv small mode")
e9f3962441c0 ("virtio_net: xsk: rx: support fill with xsk buffer")
19a5a7710ee1 ("virtio_net: xsk: support wakeup")
09d2b3182c8e ("virtio_net: xsk: bind/unbind xsk for rx")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 38eef112a8e547b8c207b2a521ad4b077d792100 Mon Sep 17 00:00:00 2001
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: Fri, 6 Sep 2024 20:31:36 +0800
Subject: [PATCH] Revert "virtio_net: big mode skip the unmap check"

This reverts commit a377ae542d8d0a20a3173da3bbba72e045bea7a9.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Takero Funaki <flintglass@gmail.com>
Link: https://patch.msgid.link/20240906123137.108741-3-xuanzhuo@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 6fa8aab18484..1cf80648f82a 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1006,7 +1006,7 @@ static void virtnet_rq_unmap_free_buf(struct virtqueue *vq, void *buf)
 		return;
 	}
 
-	if (!vi->big_packets || vi->mergeable_rx_bufs)
+	if (rq->do_dma)
 		virtnet_rq_unmap(rq, buf, 0);
 
 	virtnet_rq_free_buf(vi, rq, buf);
@@ -2716,7 +2716,7 @@ static int virtnet_receive_packets(struct virtnet_info *vi,
 		}
 	} else {
 		while (packets < budget &&
-		       (buf = virtqueue_get_buf(rq->vq, &len)) != NULL) {
+		       (buf = virtnet_rq_get_buf(rq, &len, NULL)) != NULL) {
 			receive_buf(vi, rq, buf, len, NULL, xdp_xmit, stats);
 			packets++;
 		}