From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 16 Jan 2013 20:19:59 +0000 (+0100)
Subject: win32-aio: Fix vectored reads
X-Git-Tag: qemu-xen-4.4.0-rc1~6^2~1351^2~4
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=bcbbd234d42f1111e42b91376db61922d42e7e9e;p=qemu-upstream-4.4-testing.git

win32-aio: Fix vectored reads

Copying data in the right direction really helps a lot!

Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---

diff --git a/block/win32-aio.c b/block/win32-aio.c
index 03833700b..e4b7b75d2 100644
--- a/block/win32-aio.c
+++ b/block/win32-aio.c
@@ -84,7 +84,7 @@ static void win32_aio_process_completion(QEMUWin32AIOState *s,
             int i;
 
             for (i = 0; i < qiov->niov; ++i) {
-                memcpy(p, qiov->iov[i].iov_base, qiov->iov[i].iov_len);
+                memcpy(qiov->iov[i].iov_base, p, qiov->iov[i].iov_len);
                 p += qiov->iov[i].iov_len;
             }
             qemu_vfree(waiocb->buf);