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authorJason Wang <jasowang@redhat.com>2010-09-14 11:53:05 -0400
committerMichael S. Tsirkin <mst@redhat.com>2010-10-05 07:33:43 -0400
commite0e9b406470b8dd75a115cf82c4791f41615c4c3 (patch)
treed31f3ee226e91854bc97d948a30b80c18b21fa47 /drivers/vhost/net.c
parenta00eac0c459abecb539fb2a2abd3122dd7ca5d4a (diff)
vhost: max s/g to match qemu
Qemu supports up to UIO_MAXIOV s/g so we have to match that because guest drivers may rely on this. Allocate indirect and log arrays dynamically to avoid using too much contigious memory and make the length of hdr array to match the header length since each iovec entry has a least one byte. Test with copying large files w/ and w/o migration in both linux and windows guests. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/net.c')
-rw-r--r--drivers/vhost/net.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 7c8008225ee3..72ab71fdf053 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -243,7 +243,7 @@ static int get_rx_bufs(struct vhost_virtqueue *vq,
243 int r, nlogs = 0; 243 int r, nlogs = 0;
244 244
245 while (datalen > 0) { 245 while (datalen > 0) {
246 if (unlikely(seg >= VHOST_NET_MAX_SG)) { 246 if (unlikely(seg >= UIO_MAXIOV)) {
247 r = -ENOBUFS; 247 r = -ENOBUFS;
248 goto err; 248 goto err;
249 } 249 }