Re: [Xen-devel] [PATCH 11/21] mini-os: make frontends and xenbus optional

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2012-01-20 at 20:47 +0000, Daniel De Graaf wrote:
> This adds compile-time logic to disable certain frontends in mini-os:
>  - pcifront is disabled by default, enabled for ioemu
>  - blkfront, netfront, fbfront, and kbdfront are enabled by default
>  - xenbus is required for any frontend, and is enabled by default
> 
> If all frontends and xenbus are disabled, mini-os will run without
> needing to communicate with xenstore, making it suitable to run the
> xenstore daemon.

I should've read this properly first time, then it wouldn't have taken
me until 17/21 to figure it out.

I think would be worthwhile to refactor the xenstore driver "extra"
consoles from the single console provided via start info and to make the
former a configurable option in line with the other front end drivers.
That would, I think, tidy up the changes to xencons_ring. I think
free_consfront and init_consfront only apply to the extra console case
so the ifdefs you add within them would instead surround the whole
functions (or even consfront.o if you decide that works).

Ian.


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