On Thu, 2011-08-25 at 20:49 +0200, Peter Zijlstra wrote: > the ARM LL/SC constraints pretty much mandate we do > preempt_disable()/preempt_enable() around them,
My bad, that was MIPS, it states that portable programs should not issue load/store/prefetch insn inside a LL/SC region or the behaviour is undefined or somesuch.