On Thu, 3 Aug 2006, Andi Kleen wrote: > > Those operations are only needed for special xen driver and not for > > regular kernel code! > > The Xen driver will be "regular" kernel code. As far as I can tell from this conversation there are special "Xen" drivers that need this not the rest of the system. > > for those special xen drivers. > > Well there might be reasons someone else uses this in the future too. > It's also not exactly Linux style - normally we try to add generic > facilities. What possible use could there be to someone else? The "atomic" ops lock/unlock crap exists only for i386 as far as I can tell. As you said most architectures either always use atomic ops or never. The lock/unlock atomic ops are i386 specific material that better stay contained. Its arch specific and not generic.
