just for reference the work-in-progress implementation for this on 9front amd64 kernel:
https://felloff.net/usr/cinap_lenrek/pc64fpnote.patch needs some work around the devproc access to the fpsave structs and maybe find an alternative to the #ifdef code... but otherwise the handler part was easy to implement. and the fpnote.c testsuite (thanks for that btw :-)) output from my ryzen: cpu% ./6.out # nop # float1 # noteonly floatnote mynote # beforenote floatnote mynote # afternote floatnote mynote # beforeafter floatnote mynote # simul start counting 5e+13 PASS postnote cpu% postnote done -- cinap ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Taf6b900592afc500-M3e58a7cb7e234baa24a5de28 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
