From mboxrd@z Thu Jan  1 00:00:00 1970
From: pbonzini@redhat.com (Paolo Bonzini)
Date: Wed, 16 Jun 2010 01:55:13 +0200
Subject: [ltt-dev] [PATCH RFC] Force build failure on unknown
	architectures
In-Reply-To: <20100615231423.GA16064@linux.vnet.ibm.com>
References: <20100615231423.GA16064@linux.vnet.ibm.com>
Message-ID: <4C1812E1.5080103@redhat.com>

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