On Fri, 2013-06-07 at 14:19 -0500, Kumar Gala wrote: > > I don't personally have the bandwidth to do a clean implementation (that > > handles FP exceptions, NaNs, FPSCR, etc...) but I believe it would be > > valuable if somebody else did (hint hint hint :-) since without this, > > Fedora ppc64 is basically going to be a non-started on those chips. > > > > BTW. Did you guys (ie. FSL) finally add fsqrt to e6500 or it's still > > out ? > > > > Cheers, > > Ben. > > Pretty sure fsqrt is still out of e6500.
Ok, thinking out loud... looks like we might be able to just use existing math-emu for that. From what I can tell, all it needs (other than enabling the config option), is a call to flush_fp_to_thread(current); While talking math-emu... we seem to have some duplication between the code on do_mathemu which can be compiled without CONFIG_MATH_EMULATION and in this case only just emulates loads/stores/fmr and the code in arch/powerpc/kernel/softemu8xx.c. Is there any reason we can't just get rid of the latter ? Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
