CVS commit: src/sys/arch

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sun Dec 13 15:53:06 UTC 2015

Modified Files:
        src/sys/arch/amd64/amd64: trap.c
        src/sys/arch/x86/x86: cpu.c

Log Message:
Implement amd64 support for SMEP - Supervisor Mode Execution Protection.

Now, on CPUs that support this feature, if the kernel tries to execute
an instruction located in userland, the CPU will trigger a page fault.

Tested on amd64 (Intel Core i5).


To generate a diff of this commit:
cvs rdiff -u -r1.82 -r1.83 src/sys/arch/amd64/amd64/trap.c
cvs rdiff -u -r1.117 -r1.118 src/sys/arch/x86/x86/cpu.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.