Bug#750742: linux 3.14.5-1: FTBFS on armhf due to missing configuration option

[Karsten Merker <merker@debian.org>]

Source: linux
Version: 3.14.5-1
Severity: important

Hello,

linux 3.14.5-1 FTBFS on armhf with "missing module virtio_balloon"
upon building udebs:
https://buildd.debian.org/status/fetch.php?pkg=linux&arch=armhf&ver=3.14.5-1&stamp=1402001931

It looks like the reason for this is that the kernel config
option CONFIG_VIRTIO_BALLOON is not enabled for armhf, but
building the virtio-modules udeb for armhf has been enabled in svn
revision 21401.

The udeb config references the following modules (defined in
installer/modules/virtio-modules which is included by
installer/armhf/modules/armhf-armmp/virtio-modules):

  virtio_net
  virtio_blk
  virtio_balloon
  virtio_scsi

  # Some architectures do not have PCI bus
  virtio_pci ?

For arm platforms, config/kernelarch-arm/config sets
CONFIG_VIRTIO_BALLOON to disabled by default and the
armhf-specific configs do not not change that, so either
CONFIG_VIRTIO_BALLOON has to be enabled for armhf or
virtio_balloon would have to be declared optional in the udeb
module list.

Regards,
Karten
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