[libvirt] [PATCH] Wire up <loader> to set the QEMU BIOS path

[Eric Blake]

On 04/10/2012 08:03 AM, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange at redhat.com>
> 
> * src/qemu/qemu_command.c: Wire up -bios with <loader>
> * tests/qemuxml2argvdata/qemuxml2argv-bios.args,
>   tests/qemuxml2argvdata/qemuxml2argv-bios.xml: Expand
>   existing BIOS test case to cover <loader>
> ---
>  src/qemu/qemu_command.c                       |    9 +++++++++
>  tests/qemuxml2argvdata/qemuxml2argv-bios.args |    3 ++-
>  tests/qemuxml2argvdata/qemuxml2argv-bios.xml  |    1 +
>  3 files changed, 12 insertions(+), 1 deletions(-)
> 

I just realized (thanks to
https://bugzilla.redhat.com/show_bug.cgi?id=836145) that we never
documented how to use <loader> to influence whether a guest will be
started with a BIOS that advertises or suppresses S3 support (since
there are definitely guests that do not work if S3 is advertised).  We
need a followup patch to formatdomain.html.in, since it currently claims
that the <loader> sublement is only useful for Xen.

> +++ b/src/qemu/qemu_command.c
> @@ -4052,6 +4052,11 @@ qemuBuildCommandLine(virConnectPtr conn,
>      if (enableKVM)
>          virCommandAddArg(cmd, "-enable-kvm");
>  
> +    if (def->os.loader) {
> +        virCommandAddArg(cmd, "-bios");
> +        virCommandAddArg(cmd, def->os.loader);
> +    }
> +
>      /* Set '-m MB' based on maxmem, because the lower 'memory' limit
>       * is set post-startup using the balloon driver. If balloon driver
>       * is not supported, then they're out of luck anyway.  Update the

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

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