Description of problem:
I was testing xen-4.7.0-rc1 (I expect the final version to be in Fedora 25) and found xenstored and xenconsoled were being blocked by selinux. xen-4.7.0 uses /dev/xen/privcmd in preference to /proc/xen/privcmd which was used in linux in earlier versions. Hence /dev/xen/privcmd should presumably have type xen_device_t (and similarly for /dev/xen/xenbus and /dev/xen/xenbus_backend) to match other files in that directory. I have tested setting /dev/xen/privcmd to system_u:object_r:xen_device_t:s0 and xenstored and xenconsoled then work when selinux is enforcing mode.
SELinux is preventing xenconsoled from 'ioctl' accesses on the chr_file /dev/xen/privcmd.

*****  Plugin device (91.4 confidence) suggests   ****************************

If you want to allow xenconsoled to have ioctl access on the privcmd chr_file
Then you need to change the label on /dev/xen/privcmd to a type of a similar device.
Do
# semanage fcontext -a -t SIMILAR_TYPE '/dev/xen/privcmd'
# restorecon -v '/dev/xen/privcmd'

*****  Plugin catchall (9.59 confidence) suggests   **************************

If you believe that xenconsoled should be allowed ioctl access on the privcmd chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c xenconsoled --raw | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xenconsoled_t:s0
Target Context                system_u:object_r:device_t:s0
Target Objects                /dev/xen/privcmd [ chr_file ]
Source                        xenconsoled
Source Path                   xenconsoled
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-184.fc24.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 4.5.3-300.fc24.x86_64 #1 SMP Thu
                              May 5 01:56:27 UTC 2016 x86_64 x86_64
Alert Count                   4
First Seen                    2016-05-07 22:49:38 BST
Last Seen                     2016-05-08 17:56:27 BST
Local ID                      eb5e2aa9-63d5-4b50-8e5c-e80875581e1c

Raw Audit Messages
type=AVC msg=audit(1462726587.243:442): avc:  denied  { ioctl } for  pid=973 comm="xenconsoled" path="/dev/xen/privcmd" dev="devtmpfs" ino=14800 ioctlcmd=5000 scontext=system_u:system_r:xenconsoled_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1


Hash: xenconsoled,xenconsoled_t,device_t,chr_file,ioctl

Version-Release number of selected component:
selinux-policy-3.13.1-184.fc24.noarch

Additional info:
reporter:       libreport-2.7.0
hashmarkername: setroubleshoot
kernel:         4.5.3-300.fc24.x86_64
reproducible:   Not sure how to reproduce the problem
type:           libreport