CVS commit: src/sys/arch/x86

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

Module Name:    src
Committed By:   maxv
Date:           Tue May 22 10:20:05 UTC 2018

Modified Files:
        src/sys/arch/x86/include: specialreg.h
        src/sys/arch/x86/x86: spectre.c

Log Message:
Implement a mitigation for SpectreV4 on AMD families 15h and 16h. We use
a non-architectural MSR. This MSR is also available on 17h, but there SMT
is involved, and it needs more investigation.

Not tested (I have only 10h).


To generate a diff of this commit:
cvs rdiff -u -r1.122 -r1.123 src/sys/arch/x86/include/specialreg.h
cvs rdiff -u -r1.14 -r1.15 src/sys/arch/x86/x86/spectre.c

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