From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vadim Rozenfeld Subject: [PATCH] viostor driver.Add memory barrier - synch with fix for Linux guests by Michael S. Tsirkin Date: Sun, 01 Nov 2009 12:41:13 +0200 Message-ID: <4AED65C9.70602@redhat.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------070105040304040302090601" To: kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:21157 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750877AbZKAKlK (ORCPT ); Sun, 1 Nov 2009 05:41:10 -0500 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id nA1AfGQH010339 for ; Sun, 1 Nov 2009 05:41:16 -0500 Received: from localhost.localdomain (vpn-6-131.tlv.redhat.com [10.35.6.131]) by int-mx05.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id nA1AfEp4007552 for ; Sun, 1 Nov 2009 05:41:15 -0500 Sender: kvm-owner@vger.kernel.org List-ID: This is a multi-part message in MIME format. --------------070105040304040302090601 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit repository: /home/vadimr/shares/kvm-guest-drivers-windows branch: XP commit 6906acfc2d5f58df43ebc9c190e1447ff6e63a01 Author: Vadim Rozenfeld Date: Sun Nov 1 11:54:03 2009 +0200 [PATCH] viostor driver.Add memory read barrier - synch with fix for Linux guests by Michael S. Tsirkin Signed-off-by: Vadim Rozenfeld diff --git a/viostor/virtio_ring.c b/viostor/virtio_ring.c index d099bb8..2911cef 100644 --- a/viostor/virtio_ring.c +++ b/viostor/virtio_ring.c @@ -237,6 +237,8 @@ vring_get_buf( return NULL; } + rmb(); + i = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].id; *len = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].len; --------------070105040304040302090601 Content-Type: text/plain; name="rmb.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="rmb.patch" diff --git a/viostor/virtio_ring.c b/viostor/virtio_ring.c index d099bb8..2911cef 100644 --- a/viostor/virtio_ring.c +++ b/viostor/virtio_ring.c @@ -237,6 +237,8 @@ vring_get_buf( return NULL; } + rmb(); + i = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].id; *len = vq->vring.used->ring[vq->last_used_idx%vq->vring.num].len; --------------070105040304040302090601--