[libvirt] [PATCH v2] Add new 'kvm' domain feature and ability to hide KVM signature

Ján Tomko jtomko at redhat.com
Mon Aug 25 15:13:01 UTC 2014


On 08/21/2014 07:04 PM, Alex Williamson wrote:
> QEMU 2.1 added support for the kvm=off option to the -cpu command,
> allowing the KVM hypervisor signature to be hidden from the guest.
> This enables disabling of some paravirualization features in the
> guest as well as allowing certain drivers which test for the
> hypervisor to load.  Domain XML syntax is as follows:
> 
> <domain type='kvm>
>   ...
>   <features>
>     ...
>     <kvm>
>       <hidden state='on'/>
>     </kvm>
>   </features>
>   ...
> 
> Signed-off-by: Alex Williamson <alex.williamson at redhat.com>
> ---
> 
> Hearing no further comments, here's v2:
>  - white space fix in docs/formatdomain.html.in
>  - s/virBufferAsprintf/virBufferAddLit/ in src/qemu/qemu_command.c
> 
>  docs/formatdomain.html.in                          |   21 ++++
>  docs/schemas/domaincommon.rng                      |   18 +++-
>  src/conf/domain_conf.c                             |  100 ++++++++++++++++++++
>  src/conf/domain_conf.h                             |    9 ++
>  src/qemu/qemu_command.c                            |   22 ++++
>  tests/qemuargv2xmltest.c                           |    2 
>  .../qemuxml2argv-kvm-features-off.args             |    5 +
>  .../qemuxml2argv-kvm-features-off.xml              |   27 +++++
>  .../qemuxml2argv-kvm-features.args                 |    5 +
>  .../qemuxml2argvdata/qemuxml2argv-kvm-features.xml |   27 +++++
>  tests/qemuxml2argvtest.c                           |    3 +
>  tests/qemuxml2xmltest.c                            |    3 +
>  12 files changed, 240 insertions(+), 2 deletions(-)
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvm-features-off.args
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvm-features-off.xml
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvm-features.args
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-kvm-features.xml

ACK

I will push this tomorrow unless someone has a different opinion.

(This didn't compile for me at the first try. Turns out 'git am' misplaced the
virDomainDefFeaturesCheckABIStability hunk.)

Jan

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