Linux-remoteproc Archive on lore.kernel.org
 help / color / Atom feed
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>
Subject: [PATCH 1/6] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl
Date: Sat, 16 May 2020 12:11:04 +0200
Message-ID: <20200516101109.2624-2-guennadi.liakhovetski@linux.intel.com> (raw)
In-Reply-To: <20200516101109.2624-1-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 index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-16 10:11 [PATCH 0/6] Add a vhost RPMsg API Guennadi Liakhovetski
2020-05-16 10:11 ` Guennadi Liakhovetski [this message]
2020-05-16 10:11 ` [PATCH 2/6] vhost: (cosmetic) remove a superfluous variable initialisation Guennadi Liakhovetski
2020-05-16 10:11 ` [PATCH 3/6] rpmsg: move common structures and defines to headers Guennadi Liakhovetski
2020-05-16 10:11 ` [PATCH 4/6] rpmsg: update documentation Guennadi Liakhovetski
2020-05-16 10:11 ` [PATCH 5/6] vhost: add an rpmsg API Guennadi Liakhovetski
2020-05-16 17:00   ` [Sound-open-firmware] " Pierre-Louis Bossart
2020-05-25 13:53     ` Guennadi Liakhovetski
2020-05-26 18:30       ` Pierre-Louis Bossart
2020-05-26 18:55         ` Guennadi Liakhovetski
2020-05-26 20:09           ` Pierre-Louis Bossart
2020-05-16 10:11 ` [PATCH 6/6] rpmsg: add a device ID to also bind to the ADSP device Guennadi Liakhovetski

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200516101109.2624-2-guennadi.liakhovetski@linux.intel.com \
    --to=guennadi.liakhovetski@linux.intel.com \
    --cc=kvm@vger.kernel.org \
    --cc=liam.r.girdwood@linux.intel.com \
    --cc=linux-remoteproc@vger.kernel.org \
    --cc=pierre-louis.bossart@linux.intel.com \
    --cc=sound-open-firmware@alsa-project.org \
    --cc=virtualization@lists.linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-remoteproc Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-remoteproc/0 linux-remoteproc/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-remoteproc linux-remoteproc/ https://lore.kernel.org/linux-remoteproc \
		linux-remoteproc@vger.kernel.org
	public-inbox-index linux-remoteproc

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-remoteproc


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git