Commit Graph

6 Commits

Author SHA1 Message Date
Jiri Denemark
2aeef0f6be cputest: Add "diff" command to cpu-cpuid.py
The new command can be used to generate test data for virCPUUpdateLive.

When "cpu-cpuid.py diff x86-cpuid-Something.json" is run, it reads raw
CPUID data stored in x86-cpuid-Something.xml and CPUID data from QEMU
stored in x86-cpuid-Something.json to produce two more CPUID files:
x86-cpuid-Something-enabled.xml and x86-cpuid-Something-disabled.xml.

- x86-cpuid-Something-enabled.xml will contain CPUID bits present in
    x86-cpuid-Something.json (i.e., enabled by QEMU for the "host" CPU)

- x86-cpuid-Something-disabled.xml will contain all CPUID bits from
    x86-cpuid-Something.xml which are not present in
    x86-cpuid-Something.json (i.e., CPUID bits which the host CPU
    supports, but QEMU does not enable them for the "host" CPU)

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-03-27 16:29:27 +02:00
Jiri Denemark
72c44a15c9 cputest: Rename cpu-convert.py script as cpu-cpuid.py
The new script is going to be more general and the original
functionality can be requested by "cpu-cpuid.py convert".

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-03-27 16:29:27 +02:00
Jiri Denemark
d065934cd0 cputest: Switch host CPU data scripts to model expansion
Instantiating "host" CPU and querying it using qom-get has been the only
way of probing host CPU via QEMU until 2.9.0 implemented
query-cpu-model-expansion for x86_64. Even though libvirt never really
used the old way its result can be easily converted into the one
produced by query-cpu-model-expansion. Thus we can reuse the original
test data and possible get new data from hosts where QEMU does not
support the new QMP command.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-03-03 19:57:57 +01:00
Jiri Denemark
3944aba1df cputest: Rename x86 data files
While "x86" is a CPU sub driver name, it is not a recognized name of any
architecture known to libvirt. Let's use "x86_64" prefix which can be
used with virArch APIs.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-02-24 14:10:57 +01:00
Jiri Denemark
78d27c6501 cputest: Fix name of the file removed by cpu-parse.sh
We want to remove the file created by

    json <<<"$data" >$fname.json

in case it was empty.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-02-17 11:19:29 +01:00
Jiri Denemark
3704b9003f tests: Add CPU detection tests
So far we only test CPUID -> CPU def conversion on artificial CPUID data
computed from another CPU def. This patch adds the infrastructure to
test this conversion on real data gathered from a host CPU and two
helper scripts for adding new test data:

- cpu-gather.sh runs cpuid tool and qemu-system-x86_64 to get CPUID data
  from the host CPU; this is what users can be asked to run if they run
  into an issue with host CPU detection in libvirt

- cpu-parse.sh takes the data generated by cpu-gather.sh and creates
  data files for CPU detection tests

The CPUID data queried from QEMU will eventually switch to the format
used by query-host-cpu QMP command once QEMU implements it. Until then
we just spawn QEMU with -cpu host and query the guest CPU in QOM. They
should both provide the same CPUID results, but query-host-cpu does not
require any guest CPU to be created by QEMU.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2016-06-09 09:47:56 +02:00