Re: [patch] x86: allow ZONE_DMA to be configurable

[H. Peter Anvin]

On 10/14/2010 08:03 PM, Ingo Molnar wrote:
> 
> Dunno, that i'd consider more of a bug. If an architecture absolutely 
> needs to configure in or out a kernel feature then it should not be 
> under CONFIG_EXPERT on other architectures either: it only sets us up 
> for cross-arch build failures if say the CONFIG_EXPERT dependency is 
> present on x86.
> 

Well, no, it really rather makes sense.

Consider something like CONFIG_SERIO_I8042 -- that is very much an
EXPERT option to remove on x86, but on a lot of other platforms it is
Just Another Interface.

So I think CONFIG_EXPERT_ will just encourage people to do strange
things and reduces flexibility.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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