[libvirt] [PATCH] capabilities: defaultConsoleTargetType can depend on architecture

[Eric Blake]

On 11/09/2012 08:00 AM, Viktor Mihajlovski wrote:
> For S390, the default console target type cannot be of type 'serial'.
> It is necessary to at least interpret the 'arch' attribute
> value of the os/type element to produce the correct default type.
> 
> Therefore we need to extend the signature of defaultConsoleTargetType
> to account for architecture. As a consequence all the drivers
> supporting this capability function must be updated.
> 
> Despite the amount of changed files, the only change in behavior is
> that for S390 the default console target type will be 'virtio'.

Makes sense.

> 
> N.B.: A more future-proof approach could be to to use hypervisor
> specific capabilities to determine the best possible console type.
> For instance one could add an opaque private data pointer to the
> virCaps structure (in case of QEMU to hold capsCache) which could
> then be passed to the defaultConsoleTargetType callback to determine
> the console target type.
> Seems to be however a bit overengineered for the use case...

And we can always make that change in the future if it proves necessary,
so I agree with your approach of the simpler change for now.

> 
> Signed-off-by: Viktor Mihajlovski <mihajlov at linux.vnet.ibm.com>
> ---
>  src/conf/capabilities.h          |    2 +-
>  src/conf/domain_conf.c           |    2 +-
>  src/esx/esx_driver.c             |    3 ++-
>  src/libxl/libxl_conf.c           |    3 ++-
>  src/lxc/lxc_conf.c               |    3 ++-
>  src/openvz/openvz_conf.c         |    3 ++-
>  src/parallels/parallels_driver.c |    3 ++-
>  src/phyp/phyp_driver.c           |    3 ++-
>  src/qemu/qemu_capabilities.c     |    8 ++++++--
>  src/security/virt-aa-helper.c    |    3 ++-
>  src/test/test_driver.c           |    3 ++-
>  src/uml/uml_conf.c               |    3 ++-
>  src/vbox/vbox_tmpl.c             |    3 ++-
>  src/vmware/vmware_conf.c         |    3 ++-
>  src/xen/xen_hypervisor.c         |    3 ++-
>  src/xenapi/xenapi_driver.c       |    3 ++-
>  tests/testutilslxc.c             |    3 ++-
>  tests/testutilsqemu.c            |    8 ++++++--
>  tests/testutilsxen.c             |    3 ++-
>  tests/vmx2xmltest.c              |    3 ++-
>  tests/xml2vmxtest.c              |    3 ++-
>  21 files changed, 48 insertions(+), 23 deletions(-)

ACK and pushed.

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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