L4Re,
I’ve been working with the examples and tweaking them for AMD64 (QEMU), and I’ve managed to get linux up and booting, reading the ramdisk, and even spawning a login process which kicks off /bin/sh and displays a # prompt. And that’s great, but that’s all it does. I can’t get any input to it. That’s using the device hvc0. Of course uvmm complains that there is no virtual console and warns that it might not work, so the software is at least not surprised! 😊 But when I try to use the device ttyS0, linux stops printing even before the login process tries to run. I don’t get any errors, but also no output. And I can’t seem to run the IO server because then linux won’t load at all (something about out-of-memory).
I’m sure I’m missing some little piece of magic somewhere, but I can’t find any working examples. None of them have active logins (I had to add my own iniittab to the ramdisk). A little help connecting the cons service to my linux so I can get a real bash shell? Or running IO and connecting through that?
Thank you in advance!
Richard
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Hi Richard,
On Fri Apr 11, 2025 at 15:27:18 +0000, Richard Clark wrote:
L4Re,
I’ve been working with the examples and tweaking them for AMD64 (QEMU), and I’ve managed to get linux up and booting, reading the ramdisk, and even spawning a login process which kicks off /bin/sh and displays a # prompt. And that’s great, but that’s all it does. I can’t get any input to it. That’s using the device hvc0. Of course uvmm complains that there is no virtual console and warns that it might not work, so the software is at least not surprised! 😊 But when I try to use the device ttyS0, linux stops printing even before the login process tries to run. I don’t get any errors, but also no output. And I can’t seem to run the IO server because then linux won’t load at all (something about out-of-memory).
I’m sure I’m missing some little piece of magic somewhere, but I can’t find any working examples. None of them have active logins (I had to add my own iniittab to the ramdisk). A little help connecting the cons service to my linux so I can get a real bash shell? Or running IO and connecting through that?
Did you try to run for example the "VM-basic" entry that is there? That is supposed to be a minimal working example. Please also provide the output from the system you're getting, that is helping understanding what's going on.
Thanks, Adam _______________________________________________ l4-hackers mailing list -- l4-hackers@os.inf.tu-dresden.de To unsubscribe send an email to l4-hackers-leave@os.inf.tu-dresden.de
l4-hackers@os.inf.tu-dresden.de
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Adam Lackorzynski -
Richard Clark