qemu virtfs 9p and virtio netdev let you do a lot, but the docs are all missing or wrong.
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Yay, netdev is up, virtual system running off 9p rootfs in a dir on host, able to ping outside world. No root or nasty disk images and loopback mounts anywhere.
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Did the mkroot setup work? I had virtfs links on the 9p mailing list and some old blog entries if I knew you wanted that. :)
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The old (last) aboriginal sh4 kernel was working but lacked any network driver. Copying its kconfig to my 4.15 and adding virtio-net got a working kernel.
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Yeah, qemu horked its virtio support so if you upgrade qemu old kernels stop working. https://patchwork.ozlabs.org/patch/668344/
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Maybe I missed something but I just couldn't find any virtio net driver (or other net driver) in its kconfig. Checked /proc/config.gz.
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They're per arch, the one I was fighting with today was aarrcchh6644. On sh4 -m r2d I got 8139cp working instead?
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Happy to take a patch for a better way, though. :)
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We recently got the RISC-V QEMU port upstream and I’m now working on QEMU RISC-V TCG backend so am compiling native riscv64 qemu inside of qemu-system-riscv64. We have a riscv front-end and some docs here: https://github.com/riscv/riscv-qemu/wiki …. BTW - must finish the musl-riscv port.
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