Re: [uml-user] UML on non x86/ppc

[Jeff D. <jd...@ad...>]

On Tue, Apr 29, 2008 at 10:27:54AM +0200, Daniel Janzon wrote:
> Thanks for the information. Two follow-up questions though. First, are
> there any certain features of the kernel that can be turned off that
> makes the porting effort substantially smaller? 

Turn off hostfs.

You can make the smallest possible kernel that you can boot, but
it doesn't seem to me that much else will make a big difference in the
porting effort.

> And secondly, can you
> recommend any documentation that will set me off in the right direction?
> Otherwise the source is my friend, I guess :)

There's http://user-mode-linux.sourceforge.net/old/arch-port.html, but
it's horribly out of date.  The issues described there are obviously
the same, but the interfaces described there are different now for the
most part.

The arch-specific stuff is in
    include/asm-um/*-$(ARCH).h
    arch/um/sys-$(ARCH)
    arch/um/os-Linux/sys-$(ARCH)
    arch/um/include/sysdep-$(ARCH)

Plus arch/um/Makefile-$(ARCH) and arch/um/Kconfig-$(ARCH).

			Jeff

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