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 v5 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl Date: Wed, 26 Aug 2020 19:46:33 +0200 [thread overview] Message-ID: <20200826174636.23873-2-guennadi.liakhovetski@linux.intel.com> (raw) In-Reply-To: <20200826174636.23873-1-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 75232185324a..11a4948b6216 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -97,6 +97,8 @@ #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. @@ -118,7 +120,7 @@ /* 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 */ -- 2.28.0
WARNING: multiple messages have this Message-ID (diff)
From: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> To: kvm@vger.kernel.org Cc: Ohad Ben-Cohen <ohad@wizery.com>, Mathieu Poirier <mathieu.poirier@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Vincent Whitchurch <vincent.whitchurch@axis.com>, linux-remoteproc@vger.kernel.org, Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>, virtualization@lists.linux-foundation.org, Liam Girdwood <liam.r.girdwood@linux.intel.com>, Bjorn Andersson <bjorn.andersson@linaro.org>, sound-open-firmware@alsa-project.org Subject: [PATCH v5 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl Date: Wed, 26 Aug 2020 19:46:33 +0200 [thread overview] Message-ID: <20200826174636.23873-2-guennadi.liakhovetski@linux.intel.com> (raw) In-Reply-To: <20200826174636.23873-1-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 75232185324a..11a4948b6216 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -97,6 +97,8 @@ #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. @@ -118,7 +120,7 @@ /* 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 */ -- 2.28.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
next prev parent reply other threads:[~2020-08-26 17:46 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-08-26 17:46 [PATCH v5 0/4] Add a vhost RPMsg API Guennadi Liakhovetski 2020-08-26 17:46 ` Guennadi Liakhovetski 2020-08-26 17:46 ` Guennadi Liakhovetski [this message] 2020-08-26 17:46 ` [PATCH v5 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl Guennadi Liakhovetski 2020-09-09 22:42 ` Mathieu Poirier 2020-09-10 7:15 ` Guennadi Liakhovetski 2020-09-10 7:15 ` Guennadi Liakhovetski 2020-09-10 16:46 ` Mathieu Poirier 2020-09-11 7:59 ` Guennadi Liakhovetski 2020-09-11 7:59 ` Guennadi Liakhovetski 2020-08-26 17:46 ` [PATCH v5 2/4] rpmsg: move common structures and defines to headers Guennadi Liakhovetski 2020-08-26 17:46 ` Guennadi Liakhovetski 2020-08-31 19:38 ` Mathieu Poirier 2020-08-26 17:46 ` [PATCH v5 3/4] rpmsg: update documentation Guennadi Liakhovetski 2020-08-26 17:46 ` Guennadi Liakhovetski 2020-09-09 22:45 ` Mathieu Poirier 2020-09-10 7:18 ` Guennadi Liakhovetski 2020-09-10 7:18 ` Guennadi Liakhovetski 2020-09-10 11:19 ` Guennadi Liakhovetski 2020-09-10 11:19 ` Guennadi Liakhovetski 2020-08-26 17:46 ` [PATCH v5 4/4] vhost: add an RPMsg API Guennadi Liakhovetski 2020-08-26 17:46 ` Guennadi Liakhovetski 2020-09-09 22:39 ` Mathieu Poirier 2020-09-10 8:38 ` Guennadi Liakhovetski 2020-09-10 8:38 ` Guennadi Liakhovetski 2020-09-10 17:22 ` Mathieu Poirier 2020-09-11 7:46 ` Guennadi Liakhovetski 2020-09-11 17:33 ` Mathieu Poirier 2020-09-15 12:48 ` Guennadi Liakhovetski 2020-09-15 12:48 ` Guennadi Liakhovetski 2020-09-16 17:09 ` Mathieu Poirier 2020-09-08 14:16 ` [PATCH v5 0/4] Add a vhost " Michael S. Tsirkin 2020-09-08 14:16 ` Michael S. Tsirkin 2020-09-08 22:20 ` Mathieu Poirier
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