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Re: [libvirt] [PATCH] conf: Ignore panic device on pSeries.



On Thu, May 07, 2015 at 06:40:52PM +0200, Andrea Bolognani wrote:
> The guest firmware already provides the same functionality, so we can
> just safely drop the <panic/> element from the domain definition.
> Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1182388
> ---
>  src/conf/domain_conf.c                             | 17 +++++++-----
>  .../qemuxml2argv-pseries-panic.args                |  7 +++++
>  .../qemuxml2argv-pseries-panic.xml                 | 30 ++++++++++++++++++++++
>  tests/qemuxml2argvtest.c                           |  2 ++
>  .../qemuxml2xmlout-pseries-panic.xml               | 29 +++++++++++++++++++++
>  tests/qemuxml2xmltest.c                            |  1 +
>  6 files changed, 80 insertions(+), 6 deletions(-)
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic.args
>  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-panic.xml
>  create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-pseries-panic.xml
> 
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 4cd36a1..a7d4efa 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -15478,13 +15478,18 @@ virDomainDefParseXML(xmlDocPtr xml,
>          goto error;
>      }
>      if (n > 0) {
> -        virDomainPanicDefPtr panic =
> -            virDomainPanicDefParseXML(nodes[0]);
> -        if (!panic)
> -            goto error;
> +        /* Ignore the panic device on pSeries, as the guest
> +         * firmware already provides the same functionality */
> +        if (!(ARCH_IS_PPC64(def->os.arch) &&
> +              STRPREFIX(def->os.machine, "pseries"))) {
> +            virDomainPanicDefPtr panic =
> +                virDomainPanicDefParseXML(nodes[0]);
> +            if (!panic)
> +                goto error;
>  
> -        def->panic = panic;
> -        VIR_FREE(nodes);
> +            def->panic = panic;
> +            VIR_FREE(nodes);
> +        }

No, this is totally wrong thing todo. Any fix should be in the QEMU
code, not the XML parser.


Regards,
Daniel
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