Re: [libvirt PATCH v3 3/6] qemu: remove use of (+|-)name syntax for -cpu featres

The -cpu arg gained support for feature=on|off syntax for the x86 emulator in 2.4.0 commit 38e5c119c2925812bd441450ab9e5e00fc79e662 Author: Eduardo Habkost <ehabkost(a)redhat.com&gt; Date: Mon Mar 23 17:29:32 2015 -0300 target-i386: Register QOM properties for feature flags Most other targets gained this syntax even earlier in 1.4.1 commit 1590bbcb02921dfe8e3cf66e3a3aafd31193babf Author: Andreas Färber <afaerber(a)suse.de&gt; Date: Mon Mar 3 23:33:51 2014 +0100 cpu: Implement CPUClass::parse_features() for the rest of CPUs CPUs who do not provide their own implementation of feature parsing will treat each option as a QOM property and set it to the supplied value. There appears no reason to keep supporting "+|-feature" syntax, given the current minimum QEMU version. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt;