CVS commit: src/sys/arch/x86/x86

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

Module Name:    src
Committed By:   maxv
Date:           Sat Jul 14 14:46:41 UTC 2018

Modified Files:
        src/sys/arch/x86/x86: via_padlock.c

Log Message:
Add splhigh() around the FPU code, we don't want to be preempted in the
middle, this could corrupt the FPU state and trigger undefined behavior.

Intentionally use splhigh and not kpreempt_disable, to match the generic
x86 FPU code.

Compile-tested only (I don't have VIA).

Found by Maya almost a year ago.


To generate a diff of this commit:
cvs rdiff -u -r1.25 -r1.26 src/sys/arch/x86/x86/via_padlock.c

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