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xen-devel
Re: [Xen-devel] Really really small xen0
> I was wondering if anyone has made a really minimal xen0 image. By this
> I mean an image that doesn't have much more than the kernel (f/e and b/e
> drivers linked in), and run from a crom or squashfs filesystem, and a
> minimal set of tools running in a busybox-like init process.
I did something similar for the restartable device drivers work in the OASIS
paper. I cut out everything I could from the kernel config and booted with a
tiny ramdisk, containing only a very small init (which Keir wrote to be a few
lines of assembler!). This was a bit more minimal than you describe -
basically no userspace at all ;-)
To run device drivers, the domain shouldn't need any user space at all. Its
runtime footprint was about 3megabytes. There's currently no way to
configure bridging / routing this way tho - we'd need to add some control
interface messages.
HTH,
Mark
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