On Nov 7, 2006, at 2:55 PM, YAMAMOTO Takashi wrote:

>> I don't think it's a great idea to mandate "no alloca() or
>> variable array allocations in the kernel", especially if we have a
>> long-term goal of providing ABI stability in the kernel.
>
> how is it related to ABI stability?

In some cases, you might want to replace a constant with a function  
that returns a value, and it would be nice to allow arrays-allocated- 
on-stack in such cases.

-- thorpej