diff options
| author | Jason Wang <jasowang@redhat.com> | 2013-06-18 13:04:23 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-18 11:14:18 -0700 |
| commit | 35848f68b07df3f917cb13fc3c134718669f569b (patch) | |
| tree | 6d098733bc0126ad5e133ff23d26caba0ed919e8 /drivers/hv/vmbus_drv.c | |
| parent | 36dd68319c7b56a76ed450b0e470067b5d74b9b2 (diff) | |
| download | lwn-35848f68b07df3f917cb13fc3c134718669f569b.tar.gz lwn-35848f68b07df3f917cb13fc3c134718669f569b.zip | |
drivers: hv: switch to use mb() instead of smp_mb()
Even if guest were compiled without SMP support, it could not assume that host
wasn't. So switch to use mb() instead of smp_mb() to force memory barriers for
UP guest.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index bf421e0efa1e..4004e54ef05d 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -434,7 +434,7 @@ static void vmbus_on_msg_dpc(unsigned long data) * will not deliver any more messages since there is * no empty slot */ - smp_mb(); + mb(); if (msg->header.message_flags.msg_pending) { /* |