[ltt-dev] [PATCH RFC] Force build failure on unknown architectures

[Paolo Bonzini]

On 06/16/2010 01:14 AM, Paul E. McKenney wrote:
> Create urcu/arch_unknown.h and urcu/uatomic_arch_unknown.h, which
> contain only #error statements and explanatory comments.  This forces
> build failures on unrecognized architectures in preference to trying
> to guess at what operations might be safe on such architectures.
>
> One other semi-feasible alternative is to use hashed arrays of locks
> that are acquired with signals disabled.  However, this seems a bit
> too ornate, especially for architectures for which the gcc __sync_
> primitives work correctly.

ia64 is one.

Paolo