CVSROOT: /cvs
Module name: src
Changes by: guent...@cvs.openbsd.org 2011/07/04 09:54:24
Modified files:
sys/arch/amd64/include: frameasm.h
sys/arch/amd64/amd64: locore.S machdep.c
Log message:
Force the sigreturn syscall to return to userspace via iretq by setting
the MDP_IRET flag in md_proc, then switch sigcode to enter the kernel
via syscall instead of int$80. Rearrange the return paths in both the
sysretq and iretq paths to reduce how long interrupts are blocked and
shave instructions.
ok kettenis@, extra testing krw@
