On Tue, Sep 10, 2024 at 05:21:57PM +1000, Michael Ellerman wrote: > "Ryan B. Sullivan" <rysulliv@xxxxxxxxxx> writes: > > Hello all, > > > > Just wanted to ping and see if there was any further feedback or > > questions regarding the patch? > Hi Michael, Thank you for the update. > Hi Ryan, > > I'd really like a selftest that triggers the sibling call behaviour. > > As I said upthread I tried writing one but failed. Which you later > explained is because the cross-module sibling call is not generated by > the compiler but rather by the code being objcopy'ed (or similar). > > I think it should be possible to trick the compiler into letting us do a > cross-module sibling call by doing it in an inline asm block. Obviously > that's non-standard, but I think it might work well enough for a test? > > We have an example of calling a function within an inline asm block in > call_do_irq(). If you think that that would be a welcome addition to the patch I can look into adding it, especially if you are busy at the moment. > > I'll try to find time to get that done, but I can't promise when. > > cheers > Cheers, Ryan
