git: Kernel - Enable NX for PROT_READ by default
dillon at crater.dragonflybsd.org
Tue Jun 12 10:29:12 PDT 2018
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Tue Jun 12 10:18:41 2018 -0700
Kernel - Enable NX for PROT_READ by default
* We've had NX support for a while, requiring a loader.conf tunable to
* Enhance the feature to support two modes. Mode 1 allows NX support
for PROT_READ mappings, Mode 2 allows NX support for both PROT_READ
and PROT_WRITE mappings.
Third party code should work universally with Mode 1, but apparently
quite a bit still does not work with mode 2.
* Change the default from disabled to Mode 1 in master, lets see if
anyone has any problems with it.
Suggested-by: Theo de Raadt
Summary of changes:
sys/platform/pc64/x86_64/pmap.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
DragonFly BSD source repository
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