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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>,
	Vincent Whitchurch <vincent.whitchurch@axis.com>
Subject: [PATCH v4 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl
Date: Wed, 22 Jul 2020 17:09:24 +0200
Message-ID: <20200722150927.15587-2-guennadi.liakhovetski@linux.intel.com> (raw)
In-Reply-To: <20200722150927.15587-1-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 0c2349612e77..5d9254e2a6b6 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -95,6 +95,8 @@
 #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.
@@ -116,7 +118,7 @@
 /* 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 */
 
-- 
2.27.0


  reply index

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22 15:09 [PATCH v4 0/4] Add a vhost RPMsg API Guennadi Liakhovetski
2020-07-22 15:09 ` Guennadi Liakhovetski [this message]
2020-07-23  8:34   ` [PATCH v4 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl Stefano Garzarella
2020-07-22 15:09 ` [PATCH v4 2/4] rpmsg: move common structures and defines to headers Guennadi Liakhovetski
2020-08-11 17:51   ` Mathieu Poirier
2020-07-22 15:09 ` [PATCH v4 3/4] rpmsg: update documentation Guennadi Liakhovetski
2020-07-22 15:09 ` [PATCH v4 4/4] vhost: add an RPMsg API Guennadi Liakhovetski
2020-08-04 14:27   ` Michael S. Tsirkin
2020-08-04 15:19     ` Guennadi Liakhovetski
2020-08-10 13:44       ` Michael S. Tsirkin
2020-08-12 12:32         ` Guennadi Liakhovetski
2020-08-25 13:41           ` Guennadi Liakhovetski
2020-08-25 13:53             ` Michael S. Tsirkin
2020-07-30 16:08 ` [PATCH v4 0/4] Add a vhost " Michael S. Tsirkin
2020-07-31  5:47   ` Guennadi Liakhovetski
2020-08-03 13:25     ` Mathieu Poirier
2020-08-03 20:46       ` Michael S. Tsirkin
2020-08-04 13:37         ` Mathieu Poirier
2020-08-04 14:07           ` Michael S. Tsirkin
2020-08-04 19:30             ` Mathieu Poirier
2020-08-05 11:34               ` Michael S. Tsirkin
2020-08-04 12:26 ` Michael S. Tsirkin
2020-08-04 13:19   ` Guennadi Liakhovetski
2020-08-04 14:10     ` Michael S. Tsirkin
2020-08-04 14:46       ` Guennadi Liakhovetski

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