42 lines
1.6 KiB
Diff
42 lines
1.6 KiB
Diff
|
From 358bb0daa1ce332a18cc996fcd078a3989f77d36 Mon Sep 17 00:00:00 2001
|
||
|
From: yinyin <yin.yin@cs2c.com.cn>
|
||
|
Date: Thu, 22 Aug 2013 14:47:16 +0800
|
||
|
Subject: [PATCH] virtio: virtqueue_get_avail_bytes: fix desc_pa when loop over
|
||
|
the indirect descriptor table
|
||
|
|
||
|
virtqueue_get_avail_bytes: when found a indirect desc, we need loop over it.
|
||
|
/* loop over the indirect descriptor table */
|
||
|
indirect = 1;
|
||
|
max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc);
|
||
|
num_bufs = i = 0;
|
||
|
desc_pa = vring_desc_addr(desc_pa, i);
|
||
|
But, It init i to 0, then use i to update desc_pa. so we will always get:
|
||
|
desc_pa = vring_desc_addr(desc_pa, 0);
|
||
|
the last two line should swap.
|
||
|
|
||
|
Cc: qemu-stable@nongnu.org
|
||
|
Signed-off-by: Yin Yin <yin.yin@cs2c.com.cn>
|
||
|
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
|
||
|
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
|
||
|
(cherry picked from commit 1ae2757c6c4525c9b42f408c86818f843bad7418)
|
||
|
|
||
|
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
|
||
|
---
|
||
|
hw/virtio/virtio.c | 2 +-
|
||
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
||
|
|
||
|
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
|
||
|
index f03c45d..2f1e73b 100644
|
||
|
--- a/hw/virtio/virtio.c
|
||
|
+++ b/hw/virtio/virtio.c
|
||
|
@@ -377,8 +377,8 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
|
||
|
/* loop over the indirect descriptor table */
|
||
|
indirect = 1;
|
||
|
max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc);
|
||
|
- num_bufs = i = 0;
|
||
|
desc_pa = vring_desc_addr(desc_pa, i);
|
||
|
+ num_bufs = i = 0;
|
||
|
}
|
||
|
|
||
|
do {
|