[fedora-arm] ARMv5 and atomic operations

As we get closer to having 100% package coverage in F17-ARM we're running into harder build failures due to the limitations of the chips we're building for. The problem I've noticed on many of the recent failures is due to the lack of atomic operations (These didn't arrive until ARMv6). How do we want to handle this? I see a few options: 1. Abandon armv5 and move to armv6 where some of the operations we need are available. This will still support the raspberry pi- what about kirkwood *plugs? 2. Excludearch armv5tel from the affected packages since they'll never work atomically. 3. Accept that these packages simply won't be available to 32 bit Fedora systems (this is the result of inaction). 4. Pretend operations are atomic when they are not. 5. Create magic patch that implements atomic operations through software. Would appreciate feedback, especially if one of these options is a terrible idea that would impact you or the way you use Fedora adversely. -- Brendan Conoboy / Red Hat, Inc. / blc(a)redhat.com