Public bug reported:
So to do virtual machine / cloudy stuff things in the kernel config, are
not how one would expect them to be. Whilst investigating that I've went
ahead to compare all our kernel configs.
amd64/config.common.amd64:CONFIG_VIRTIO_BLK=y
amd64/config.common.amd64:CONFIG_VIRTIO_NET=y
arm64/config.common.arm64:CONFIG_VIRTIO_BLK=y
arm64/config.common.arm64:CONFIG_VIRTIO_NET=y
armhf/config.common.armhf:CONFIG_VIRTIO_BLK=y
armhf/config.common.armhf:CONFIG_VIRTIO_NET=y
i386/config.common.i386:CONFIG_VIRTIO_BLK=y
i386/config.common.i386:CONFIG_VIRTIO_NET=y
powerpc/config.common.powerpc:CONFIG_VIRTIO_BLK=y
powerpc/config.common.powerpc:CONFIG_VIRTIO_NET=y
ppc64el/config.common.ppc64el:CONFIG_VIRTIO_BLK=y
ppc64el/config.common.ppc64el:CONFIG_VIRTIO_NET=y
but...
s390x/config.common.s390x:CONFIG_VIRTIO_BLK=m
s390x/config.common.s390x:CONFIG_VIRTIO_NET=m
It would make sense to set CONFIG_VIRTIO_BLK and _NET to "=y" on s390x.
Also:
amd64/config.common.amd64:CONFIG_KVM=m
arm64/config.common.arm64:CONFIG_KVM=y
armhf/config.common.armhf:CONFIG_KVM=y
i386/config.common.i386:CONFIG_KVM=m
powerpc/config.common.powerpc:CONFIG_KVM=y
ppc64el/config.common.ppc64el:CONFIG_KVM=y
s390x/config.common.s390x:CONFIG_KVM=m
Is a bit of mixed bag... x86+s390x have it as a module, yet
arm*+powerpc* have it built in? Maybe all arches should be =y ?
another one:
Is there something special about ZLIB_DEFLATE on s390x?
amd64/config.common.amd64:CONFIG_ZLIB_DEFLATE=y
arm64/config.common.arm64:CONFIG_ZLIB_DEFLATE=y
armhf/config.common.armhf:CONFIG_ZLIB_DEFLATE=y
i386/config.common.i386:CONFIG_ZLIB_DEFLATE=y
powerpc/config.common.powerpc:CONFIG_ZLIB_DEFLATE=y
ppc64el/config.common.ppc64el:CONFIG_ZLIB_DEFLATE=y
s390x/config.common.s390x:CONFIG_ZLIB_DEFLATE=m
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
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https://bugs.launchpad.net/bugs/1532886
Title:
s390x kernels are inconsistent for cloud stuff
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