Date: Tue, 2 Jan 2001 11:22:42 +0000 From: Matthew Wilcox <matthew@wil.cx> We really can't. We _only_ have load-and-zero. And it has to be 16-byte aligned. xchg() is just not something the CPU implements. Oh bugger... you do have real problems. Later, David S. Miller davem@redhat.com