CVSROOT: /cvs
Module name: src
Changes by: guent...@cvs.openbsd.org 2019/08/07 12:53:28
Modified files:
sys/arch/amd64/amd64: cpu.c locore.S vector.S
sys/arch/amd64/include: codepatch.h frameasm.h
Log message:
Mitigate CVE-2019-1125: block speculation past conditional jump to mis-skip
or mis-take swapgs in interrupt path and in trap/fault/exception path. The
latter is improved to have no conditionals around this when Meltdown mitigation
is in effect. Codepatch out the fences based on the description of CPU bugs
in the (well written) Linux commit message.
feedback from kettenis@
ok deraadt@
