386 specific workaround code still needed to be updated if relevant part of the code is updated. If you look at the patch the remove 386 support (http://lkml.i

386 specific workaround code still needed to be updated if relevant part of the code is updated. If you look at the patch the remove 386 support (http://lkml.iu.edu/hypermail/linux/kernel/1212.1/01152.html http://lkml.iu.edu/hypermail/linux/kernel/1212.1/01152.html), you can already see that it's already under #ifdef. There are quite a number of atomic instructions not available for 386 which all requires workaround.