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    SubjectRe: [PATCH] init/do_mounts.c: Add root="fstag:<tag>" syntax for root device
    Stefan Hajnoczi wrote on Thu, Jun 10, 2021 at 09:16:38AM +0100:
    > virtio-9p should be simple. I'm not sure how much additional setup the
    > other 9p transports require. TCP and RDMA seem doable if there are
    > kernel parameters to configure things before the root file system is
    > mounted.

    For TCP, we can probably piggyback on what nfs does for this, see the
    ip= parameter in Documentation/admin-guide/nfs/nfsroot.rst -- it lives
    in net/ipv4/ipconfig.c so should just work out of the box

    For RDMA I'm less optimistic, technically if we can setup ipoib with an
    ip with the same parameter it should work, but I have nothing to test it
    on anyway so that'll wait until someone who cares actually does try...


    Either way, we've got to start somewhere, so it's good there's something :)
    --
    Dominique


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