Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754691AbaJVSlC (ORCPT ); Wed, 22 Oct 2014 14:41:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41281 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754454AbaJVSk7 (ORCPT ); Wed, 22 Oct 2014 14:40:59 -0400 Date: Wed, 22 Oct 2014 21:44:31 +0300 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: Rusty Russell , virtualization@lists.linux-foundation.org, linux-api@vger.kernel.org Subject: [PATCH RFC v3 05/16] virtio: add virtio 1.0 feature bit Message-ID: <1414003404-505-6-git-send-email-mst@redhat.com> References: <1414003404-505-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1414003404-505-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Based on original patches by Rusty Russell, Thomas Huth and Cornelia Huck. Signed-off-by: Michael S. Tsirkin --- include/uapi/linux/virtio_config.h | 7 +++++-- drivers/virtio/virtio_ring.c | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h index 3ce768c..f3fe33a 100644 --- a/include/uapi/linux/virtio_config.h +++ b/include/uapi/linux/virtio_config.h @@ -41,11 +41,11 @@ /* We've given up on this device. */ #define VIRTIO_CONFIG_S_FAILED 0x80 -/* Some virtio feature bits (currently bits 28 through 31) are reserved for the +/* Some virtio feature bits (currently bits 28 through 32) are reserved for the * transport being used (eg. virtio_ring), the rest are per-device feature * bits. */ #define VIRTIO_TRANSPORT_F_START 28 -#define VIRTIO_TRANSPORT_F_END 32 +#define VIRTIO_TRANSPORT_F_END 33 /* Do we get callbacks when the ring is completely used, even if we've * suppressed them? */ @@ -54,4 +54,7 @@ /* Can the device handle any descriptor layout? */ #define VIRTIO_F_ANY_LAYOUT 27 +/* v1.0 compliant. */ +#define VIRTIO_F_VERSION_1 32 + #endif /* _UAPI_LINUX_VIRTIO_CONFIG_H */ diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index b311fa7..9f5dfe3 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -780,6 +780,8 @@ void vring_transport_features(struct virtio_device *vdev) break; case VIRTIO_RING_F_EVENT_IDX: break; + case VIRTIO_F_VERSION_1: + break; default: /* We don't understand this bit. */ vdev->features &= ~(1ULL << i); -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/