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From: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
To: kvm@vger.kernel.org
Cc: linux-remoteproc@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	sound-open-firmware@alsa-project.org,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Liam Girdwood <liam.r.girdwood@linux.intel.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Ohad Ben-Cohen <ohad@wizery.com>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>
Subject: [PATCH v3 1/5] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl
Date: Wed, 27 May 2020 20:05:37 +0200	[thread overview]
Message-ID: <20200527180541.5570-2-guennadi.liakhovetski@linux.intel.com> (raw)
In-Reply-To: <20200527180541.5570-1-guennadi.liakhovetski@linux.intel.com>

VHOST_VSOCK_SET_RUNNING is used by the vhost vsock driver to perform
crucial VirtQueue initialisation, like assigning .private fields and
calling vhost_vq_init_access(), and clean up. However, this ioctl is
actually extremely useful for any vhost driver, that doesn't have a
side channel to inform it of a status change, e.g. upon a guest
reboot. This patch makes that ioctl generic, while preserving its
numeric value and also keeping the original alias.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
---
 include/uapi/linux/vhost.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index 9fe72e4..b54af9d 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -93,6 +93,8 @@
 #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
 #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)
 
+#define VHOST_SET_RUNNING _IOW(VHOST_VIRTIO, 0x61, int)
+
 /* VHOST_NET specific defines */
 
 /* Attach virtio net ring to a raw socket, or tap device.
@@ -114,7 +116,7 @@
 /* VHOST_VSOCK specific defines */
 
 #define VHOST_VSOCK_SET_GUEST_CID	_IOW(VHOST_VIRTIO, 0x60, __u64)
-#define VHOST_VSOCK_SET_RUNNING		_IOW(VHOST_VIRTIO, 0x61, int)
+#define VHOST_VSOCK_SET_RUNNING		VHOST_SET_RUNNING
 
 /* VHOST_VDPA specific defines */
 
-- 
1.9.3


  reply	other threads:[~2020-05-27 18:05 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-27 18:05 [PATCH v3 0/5] Add a vhost RPMsg API Guennadi Liakhovetski
2020-05-27 18:05 ` Guennadi Liakhovetski [this message]
2020-05-27 18:05 ` [PATCH v3 2/5] vhost: (cosmetic) remove a superfluous variable initialisation Guennadi Liakhovetski
2020-05-27 18:05 ` [PATCH v3 3/5] rpmsg: move common structures and defines to headers Guennadi Liakhovetski
2020-05-27 18:05 ` [PATCH v3 4/5] rpmsg: update documentation Guennadi Liakhovetski
2020-05-28 19:26   ` Mathieu Poirier
2020-05-27 18:05 ` [PATCH v3 5/5] vhost: add an RPMsg API Guennadi Liakhovetski
2020-05-28 19:26   ` Mathieu Poirier
2020-06-17 19:17   ` Vincent Whitchurch
2020-06-17 19:17     ` Vincent Whitchurch
2020-06-18  9:03     ` Guennadi Liakhovetski
2020-06-18  9:33       ` Vincent Whitchurch
2020-06-18  9:33         ` Vincent Whitchurch
2020-06-18 10:39         ` Guennadi Liakhovetski
2020-06-18 10:39           ` Guennadi Liakhovetski
2020-06-18 13:52           ` Vincent Whitchurch
2020-06-18 13:52             ` Vincent Whitchurch
2020-06-18 14:14             ` Guennadi Liakhovetski
2020-06-18 14:14               ` Guennadi Liakhovetski
2020-07-14  8:33               ` Vincent Whitchurch
2020-07-14  8:33                 ` Vincent Whitchurch
2020-05-29  6:01 ` [PATCH v3 0/5] Add a vhost " Jason Wang
2020-05-29  6:50   ` Guennadi Liakhovetski
2020-05-29  7:06     ` Jason Wang
2020-06-04 19:23 ` Michael S. Tsirkin
2020-06-05  6:34   ` Guennadi Liakhovetski
2020-06-05  6:34     ` Guennadi Liakhovetski
2020-06-08  7:37     ` Guennadi Liakhovetski
2020-06-08  9:09       ` Michael S. Tsirkin
2020-06-08  9:11       ` Guennadi Liakhovetski
2020-06-08  9:19         ` Michael S. Tsirkin
2020-06-08 10:15           ` Guennadi Liakhovetski
2020-06-08 11:16             ` Guennadi Liakhovetski
2020-06-08 13:08               ` Michael S. Tsirkin
2020-06-08 13:01             ` Michael S. Tsirkin
2020-06-05 10:01   ` [Sound-open-firmware] " Liam Girdwood

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