target-i386: Add "feature-words" property to X86CPU
This property will be useful for libvirt, as libvirt already has logic
based on low-level feature bits (not feature names), so it will be
really easy to convert the current libvirt logic to something using the
"feature-words" property.
The property will have two main use cases:
- Checking host capabilities, by checking the features of the "host"
CPU model
- Checking which features are enabled on each CPU model
Example output:
$ ./QMP/qmp --path=/tmp/m \
qom-get --path=/machine/icc-bridge/icc/child[0] \
--property=feature-words
item[0].cpuid-register: EDX
item[0].cpuid-input-eax:
2147483658
item[0].features: 0
item[1].cpuid-register: EAX
item[1].cpuid-input-eax:
1073741825
item[1].features: 0
item[2].cpuid-register: EDX
item[2].cpuid-input-eax:
3221225473
item[2].features: 0
item[3].cpuid-register: ECX
item[3].cpuid-input-eax:
2147483649
item[3].features: 101
item[4].cpuid-register: EDX
item[4].cpuid-input-eax:
2147483649
item[4].features:
563346425
item[5].cpuid-register: EBX
item[5].cpuid-input-eax: 7
item[5].features: 0
item[5].cpuid-input-ecx: 0
item[6].cpuid-register: ECX
item[6].cpuid-input-eax: 1
item[6].features:
2155880449
item[7].cpuid-register: EDX
item[7].cpuid-input-eax: 1
item[7].features:
126614521
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>