artulab.com Git - openbsd/commit

author	kettenis <kettenis@openbsd.org>
	Mon, 27 Mar 2023 19:02:47 +0000 (19:02 +0000)
committer	kettenis <kettenis@openbsd.org>
	Mon, 27 Mar 2023 19:02:47 +0000 (19:02 +0000)
commit	aa60921aa22cd2c4d517dfbcb04731f5614b8130
tree	3e22ada0a8ea5b676a0445207453fb1d01dd2417	tree \| snapshot
parent	ad4909c5bd7a422ecb69d208c2c299bbf0ab6987	commit \| diff

Implement branch target protection using the branch target identification
feature introduced in Armv8.5.  This provides "head-CFI" to complement
the "tail-CFI" provided by retguard.  Unfortunately most arm64 machines
don't support this feature yet.  But Apple M2 does support it and it
seems to work there.

ok deraadt@

OpenBSD src

RSS Atom

by Ahmet Artu Yildirim

sys/arch/arm64/arm64/aesv8-armx.S		diff \| blob \| history
sys/arch/arm64/arm64/pmap.c		diff \| blob \| history
sys/arch/arm64/arm64/trap.c		diff \| blob \| history
sys/arch/arm64/conf/Makefile.arm64		diff \| blob \| history
sys/arch/arm64/include/armreg.h		diff \| blob \| history
sys/arch/arm64/include/asm.h		diff \| blob \| history
sys/arch/arm64/include/pte.h		diff \| blob \| history