Log Message:
qemu: updated to 3.0.0

3.0.0:

Incompatible changes
Option "-no-kvm-pit-reinjection" has been removed. Use "-global \ 
kvm-pit.lost_tick_policy=discard" instead.
Option "-no-kvm-irqchip" has been removed. Use "-machine \ 
kernel_irqchip=off" instead.
The "vlan" parameter of the "-net" option has been removed. \ 
Use "-netdev" with IDs or the "hubport" netdev instead.
The deprecated -drive options "geometry", "addr" and \ 
"serial" have been removed. Use "-drive if=none" and pass \ 
the options to "-device" instead.
The "xlnx-ep108" machine has been replaced by the \ 
"xlnx-zcu102" machine.
The qemu-img "convert -s snapshot_id_or_name" argument has been \ 
removed. Use "convert -l snapshot_param" instead.
PPC support for explicitly allocated RMAs has been removed (kernel support \ 
removed in 2015).
The default for VFIO's "display" option has been changed from \ 
"auto" to "off", because "auto" requires an \ 
OpenGL-compatible configuration for vGPUs that require GL support.
The deprecated xlnx-ep108 machine was removed.
Some 32-bit guests on the "virt" machine may need "-machine \ 
highmem=off" if they are unable to support LPAE and are confused by the PCI \ 
ECAM now being above the 4GB mark in the address space

New deprecated options and features
The "arch" output member of the "query-cpus-fast" command is \ 
deprecated. Use the "target" output member instead.
Option "-virtioconsole" is deprecated, use "-device \ 
virtconsole" instead.
The non-functional "-clock" option will be removed soon.
The "pc-0.10" and "pc-0.11" machines are now deprecated. Use \ 
newer machine types instead.
Option "-enable-hax" is deprecated. Use "-accel hax" instead.
The "arch" memeber in the reply to query-cpus-fast is deprecated, use \ 
"target" instead.
The "file" driver for drives is no longer appropriate for character or \ 
host devices and will only accept regular files (S_IFREG). Use host_cdrom or \ 
host_device instead.
Consult the "Deprecated Features" appendix for the full list of \ 
historically deprecated features/options.

Future incompatible changes
Three options are using different names on the command line and in configuration \ 
file. In particular:
The "acpi" configuration file section matches command-line option \ 
"acpitable";
The "boot-opts" configuration file section matches command-line option \ 
"boot";
The "smp-opts" configuration file section matches command-line option \ 
"smp".
-readconfig will standardize on the name for the command line option.
Behavior of automatic calculation of SMP topology when some SMP topology options \ 
for -smp are omitted (sockets, cores, threads) will change in the future. If \ 
guest ABI needs to be preserved on upgrades while using the SMP topology \ 
options, users should either set set all options explicitly (sockets, cores, \ 
threads), or omit all of them.
Devices "allwinner-a10", "pc87312", "ssi-sd" will \ 
be configured with explicit properties instead of implicitly. This is unlikely \ 
to affect users.
For x86, specifying a CPUID feature with both "+feature/-feature" and \ 
"feature=on/off" will cause a warning. The current behavior for this \ 
combination ("+feature/-feature" wins over "feature=on/off") \ 
will be changed so that "+feature" and "-feature" will be \ 
synonyms for "feature=on" and "feature=off" respectively).
The read-only block drivers "bochs", "cloop" and \ 
"dmg" as well as "rbd" and "vvfat" in certain \ 
read-only configurations will no longer enable read-only mode automatically. It \ 
will be necessary to specify "read-only=on" explicitly on the command \ 
line and in QMP commands for the setup to keep working; the default \ 
"read-only=off" setting will result in an error.
On s390x, using KVM with a Linux host kernel version < 3.15 has been broken \ 
since QEMU version 2.10. This will not be fixed unless a need is communicated \ 
(otherwise the code will be removed in the near future, so that you need at \ 
least Linux kernel version 3.15 on the host to run KVM on System z)