Re: [PATCH v2] kvm: fix irqfd build failure discovered in linux-next

Avi Kivity
2009-05-21T13:52:06Z

Gregory Haskins wrote:
> Stephen Rothwell noted a build failure in arch != x86 in last nights
> linux-next tree, as noted here:
>
> http://lkml.org/lkml/2009/5/21/32
>
> This patch corrects the build issue by requiring explicit support for
> IRQFD to be defined, and only defining it on x86 (the only arch fully
> supported). The code itself isnt architecture dependent, but we need
> to add a new file to each makefile, advertise the capability, and
> of course, test that it works for each supported arch. We will submit
> patches against each relevant arch at a later time to enable support
> there as well.
>
>
> +config HAVE_KVM_EVENTFD
> + bool
> + default y
> +
>

The build system will complain if it sees a symbol used but not defined;
so you have to define it for all four archs. So I went ahead and did
virt/kvm/Kconfig and adapted your patch to use it.

--
error compiling committee.c: too many arguments to function