Messages in this thread | | | Date | Wed, 18 Jul 2007 20:38:40 +0200 | From | Andi Kleen <> | Subject | Re: Patches for REALLY TINY 386 kernels |
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On Wed, Jul 18, 2007 at 08:29:27PM +0200, Jan Engelhardt wrote: > > On Jul 18 2007 20:20, Andi Kleen wrote: > >> > >> Well, how big the vmlinux file is matters if it doesn't fit in memory > >> with enough time to get to the phase where it is dumping the init > >> sections. > > > >If you don't have enough memory for a few tens of KB of init sections > >you're very unlikely to have enough memory for user space. > > If the code was not too hackish, I would not buy that. > Routers for example can run -- minus the userspace utilities required to set > things up -- "without" userspace.
They still need memory for packets and other data structures. Without having enough memory to queue packets and keep the routing cache you cannot do any useful routing.
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