Zachary Amsden wrote: >> >> Things like what? Do you mean the %[foo] asm parameter syntax? I think >> those versions are no longer supported - Arjan posted a patch a few days >> ago to convert a pile of asms to this form. Or do you mean something >> else? >> > > I meant having an output in the clobber list, There's no output in the clobber list, just "memory" and "cc". The paravirt_clobber() is the stuff which gets put in the .parainstructions section which tells the patcher what registers are expected to be modified at that callsite (including both temp and output registers). J