[ Moving discussion to tech-userlevel ] > On Aug 5, 2026, at 7:03 PM, Nat Sloss <[email protected]> wrote: > > Hi Jason, > > All M68040 configs require FPSP... > Not necessarily true if you prefer to run soft float. > My current kernel config has options M68030 and M68040 which I use with a > soft float userland. > Also I don't think FPSP is required for an LC040 when used with options > FPU_EMULATE. > Attached is my attempt at addressing this....It would mean changing every > existing instance of M68040 to options M68040HF :(
I was about to suggest - “just use ’no options FPSP’!”, but then I noticed that config(1) doesn’t handle that if the option is a depended-option. Oops! I think I’d like to make config(1) handle this case so that the implied FPSP / M060SP options work, but folks like yourself who want to elide it can do so. Looks like the changes to config(1) will be small. Because option dependencies are done as a separate pass after parsing the config file, what I’ll need to do is keep track of every option explicitly de-selected in the config file with a “no option” statement, and then consult that table when processing the depended-options. Sound reasonable? > Removing FPSP on a kernel with FPU_EMULATE reduced the kernel size ~200kB > of much needed memory. > Best regards, > Nat >
040hf.diff
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