CVSROOT: /cvs Module name: src Changes by: dera...@cvs.openbsd.org 2020/03/13 02:46:50
Modified files:
sys/arch/arm/arm: sigcode.S syscall.c
Log message:
Anthony Steinhauser reports that 32-bit arm cpus have the same speculation
problems as 64-bit models. All syscall instructions ("swi 0") now have a
nop;nop after them. We make the kernel skip over these when returning, so
that we can (soon) change the nops into a speculation barrier.
ok kettenis
