On Fri, Oct 08, 2021 at 10:01:42 +0100, Daniel P. Berrangé wrote:
The -cpu arg gained support for feature=on|off syntax for the x86 emulator in 2.4.0
commit 38e5c119c2925812bd441450ab9e5e00fc79e662 Author: Eduardo Habkost <ehabkost@redhat.com> 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@suse.de> 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@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>