<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">From 95a635e4dfb97cd5684a8102e4ccd023cfa2d0b8 Mon Sep 17 00:00:00 2001
From: Xiao Wang &lt;jasowang@redhat.com&gt;
Date: Mon, 10 Aug 2015 05:09:26 +0200
Subject: [PATCH 05/16] virtio-serial: fix ANY_LAYOUT

Message-id: &lt;1439183375-4841-6-git-send-email-jasowang@redhat.com&gt;
Patchwork-id: 67432
O-Subject: [RHEL7.2 qemu-kvm-rhev PATCH 05/14] virtio-serial: fix ANY_LAYOUT
Bugzilla: 1248312
RH-Acked-by: Vlad Yasevich &lt;vyasevic@redhat.com&gt;
RH-Acked-by: Paolo Bonzini &lt;pbonzini@redhat.com&gt;
RH-Acked-by: Michael S. Tsirkin &lt;mst@redhat.com&gt;

From: "Michael S. Tsirkin" &lt;mst@redhat.com&gt;

Don't assume a specific layout for control messages.
Required by virtio 1.

Signed-off-by: Michael S. Tsirkin &lt;mst@redhat.com&gt;
Reviewed-by: Amit Shah &lt;amit.shah@redhat.com&gt;
Reviewed-by: Jason Wang &lt;jasowang@redhat.com&gt;
(cherry picked from commit 7882080388be5088e72c425b02223c02e6cb4295)
Signed-off-by: Miroslav Rezanina &lt;mrezanin@redhat.com&gt;
---
 hw/char/virtio-serial-bus.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c
index dc5c5ac..fee417d 100644
--- a/hw/char/virtio-serial-bus.c
+++ b/hw/char/virtio-serial-bus.c
@@ -194,7 +194,8 @@ static size_t send_control_msg(VirtIOSerial *vser, void *buf, size_t len)
         return 0;
     }
 
-    memcpy(elem.in_sg[0].iov_base, buf, len);
+    /* TODO: detect a buffer that's too short, set NEEDS_RESET */
+    iov_from_buf(elem.in_sg, elem.in_num, 0, buf, len);
 
     virtqueue_push(vq, &amp;elem, len);
     virtio_notify(VIRTIO_DEVICE(vser), vq);
-- 
1.8.3.1

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