Re: [PATCH 4/7] qemu: Default to GIC v2

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On 02/03/2016 03:25 PM, Andrea Bolognani wrote:
> When a domain is configured to use GIC but no version has been
> specified by the user, default to GIC v2.
> ---
>  src/qemu/qemu_domain.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index 1895520..d120e15 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -1239,6 +1239,18 @@ qemuDomainDefAddDefaultDevices(virDomainDefPtr def,
>  
>  
>  static int
> +qemuDomainDefAddDefaultFeatures(virDomainDefPtr def)

?qemuDomainDefSetDefaultFeatures?

You're not adding gic, it's already added, you're just setting the
default version... although this could be unnecessary if host were the
default...

> +{
> +    /* Default to GIC v2 if no version was specified */
> +    if (def->features[VIR_DOMAIN_FEATURE_GIC] == VIR_TRISTATE_SWITCH_ON &&
> +        def->gic_version == VIR_GIC_VERSION_NONE)
> +        def->gic_version = VIR_GIC_VERSION_2;
> +
> +    return 0;

Since there is no other return value, this should be a void

Also, consider my comment in 1/7... We could set the version=host when
we send the XML to Why not use 'host' as the default?  If that's the
case, then this patch goes away.

BTW: Somewhere along the way docs/formatdomain.html.in needs an
adjustment to describe the options (host, 2, 3) and how they work.

John

> +}
> +
> +
> +static int
>  qemuCanonicalizeMachine(virDomainDefPtr def, virQEMUCapsPtr qemuCaps)
>  {
>      const char *canon;
> @@ -1289,6 +1301,9 @@ qemuDomainDefPostParse(virDomainDefPtr def,
>      if (qemuCanonicalizeMachine(def, qemuCaps) < 0)
>          goto cleanup;
>  
> +    if (qemuDomainDefAddDefaultFeatures(def) < 0)
> +        goto cleanup;
> +
>      if (virSecurityManagerVerify(driver->securityManager, def) < 0)
>          goto cleanup;
>  
> 

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