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danobi/vmtest is going to migrate from using 9p to using virtio_fs to
mount the local rootfs: https://github.com/danobi/vmtest/pull/88
BPF CI uses danobi/vmtest to run bpf selftests and will need to support
VIRTIO_FS.
This change enables new kconfigs to be able to support the upcoming
danobi/vmtest.
Tested by building a new kernel with those config and confirming it
would successfully run with 9p (currently what is used by vmtest), and
with virtio_fs (using a local build of vmtest).
$ vmtest -k arch/x86/boot/bzImage "findmnt /"
=> bzImage
===> Booting
===> Setting up VM
===> Running command
TARGET SOURCE FSTYPE OPTIONS
/ /dev/root 9p rw,relatime,cache=5,access=client,msize=512000,trans=virtio
$ /home/chantra/local/danobi-vmtest/target/debug/vmtest -k arch/x86/boot/bzImage "findmnt /"
=> bzImage
===> Initializing host environment
===> Booting
===> Setting up VM
===> Running command
TARGET SOURCE FSTYPE OPTIONS
/ rootfs virtiofs rw,relatime
Changes in v2:
* Sorted configs alphabetically
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/bpf/20240925002210.501266-1-chantr4@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Those configs are needed to be able to run VM somewhat consistently.
For instance, ATM, s390x is missing the `CONFIG_VIRTIO_CONSOLE` which
prevents s390x kernels built in CI to leverage qemu-guest-agent.
By moving them to `config,vm`, we should have selftest kernels which are
equal in term of VM functionalities when they include this file.
The set of config unabled were picked using
grep -h -E '(_9P|_VIRTIO)' config.x86_64 config | sort | uniq
added to `config.vm` and then
grep -vE '(_9P|_VIRTIO)' config.{x86_64,aarch64,s390x}
as a side-effect, some config may have disappeared to the aarch64 and
s390x kernels, but they should not be needed. CI will tell.
Signed-off-by: Manu Bretelle <chantr4@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20231031212717.4037892-1-chantr4@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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