[libvirt] [PATCH v5 6/9] libxl: add support for CPUID features policy

[Daniel P. Berrangé]

On Wed, Mar 14, 2018 at 03:26:13AM +0100, Marek Marczykowski-Górecki wrote:
> Convert CPU features policy into libxl cpuid policy settings. Use new
> ("libxl") syntax, which allow to enable/disable specific bits, using
> host CPU as a base. For this reason, only "host-passthrough" mode is
> accepted.
> Libxl do not have distinction between "force" and "required" policy
> (there is only "force") and also between "forbid" and "disable" (there
> is only "disable"). So, merge them appropriately. If anything, "require"
> and "forbid" should be enforced outside of specific driver.
> Nested HVM (vmx and svm features) is handled separately, so exclude it
> from translation.
> 
> Signed-off-by: Marek Marczykowski-Górecki <marmarek at invisiblethingslab.com>
> ---
> Changes since v4:
>  - added spec-ctrl/ibrsb
> Changes since v2:
>  - drop spurious changes
>  - move libxlTranslateCPUFeature function to xen_xl.c, to be reused by
>  xenconfig driver
> Changes since v1:
>  - use new ("libxl") syntax to set only bits explicitly mentioned in
>  domain XML
> ---
>  src/libxl/libxl_conf.c | 36 +++++++++++++++++++++++++++++++++---
>  src/xenconfig/xen_xl.c | 35 +++++++++++++++++++++++++++++++++++
>  src/xenconfig/xen_xl.h |  2 ++
>  3 files changed, 70 insertions(+), 3 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange at redhat.com>


Regards,
Daniel
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