On Wed, Mar 14, 2018 at 03:26:14AM +0100, Marek Marczykowski-Górecki wrote:
> Test enabling/disabling individual CPU features and also setting
> nested HVM support, which is also controlled by CPU features node.
>
> Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Jim Fehlig <jfehlig@xxxxxxxx>
> ---
> Changes since v3:
> - adjust for modified nested HVM handling
> Changes since v1:
> - rewritten to Jim's test suite for libxl_domain_config generator
> ---
> tests/libxlxml2domconfigdata/fullvirt-cpuid.json | 64 +++++++++++++++++-
> tests/libxlxml2domconfigdata/fullvirt-cpuid.xml | 37 ++++++++++-
> tests/libxlxml2domconfigtest.c | 1 +-
> 3 files changed, 102 insertions(+)
> create mode 100644 tests/libxlxml2domconfigdata/fullvirt-cpuid.json
> create mode 100644 tests/libxlxml2domconfigdata/fullvirt-cpuid.xml
>
> diff --git a/tests/libxlxml2domconfigdata/fullvirt-cpuid.json b/tests/libxlxml2domconfigdata/fullvirt-cpuid.json
> new file mode 100644
> index 0000000..28037be
> --- /dev/null
> +++ b/tests/libxlxml2domconfigdata/fullvirt-cpuid.json
> @@ -0,0 +1,64 @@
> +{
> + "c_info": {
> + "type": "hvm",
> + "name": "XenGuest2",
> + "uuid": "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
> + },
> + "b_info": {
> + "max_vcpus": 1,
> + "avail_vcpus": [
> + 0
> + ],
> + "max_memkb": 592896,
> + "target_memkb": 403456,
> + "video_memkb": 8192,
> + "shadow_memkb": 5656,
> + "cpuid": [
> + {
> + "leaf": 1,
> + "ecx": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0",
> + "edx": "xxxxxxxxxxxxxxxxxxxxxxxxxxx1xxxx"
> + }
Since Xen lets you specify raw "cpuid" register values here, surely
this is flexible enough to allow us to support the mode=custom CPU
models ?
We would just need to make sure every bit poisition used either
0 or 1, and not 'x', so that we are fully overriding whatever
defaults are presented by the hypervisor "host" CPU model. Or is
life more complicated than that ?
Regards,
Daniel
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