diff options
| author | Philip Guenther <guenther@cvs.openbsd.org> | 2018-06-14 19:57:30 +0000 |
|---|---|---|
| committer | Philip Guenther <guenther@cvs.openbsd.org> | 2018-06-14 19:57:30 +0000 |
| commit | e9bb752af5469ebc0bbb6b67f8ad7d87683801ec (patch) | |
| tree | 84ffa2347b3e127d6bf4a00d583c4d5628e8191a /sys/arch/amd64/conf | |
| parent | 8ae53f1d08462c4da1f7806ca82cdd721c937bca (diff) | |
Clear the GPRs when entering the kernel from userspace so that
user-controlled values can't take part in speculative execution in
the kernel down paths that end up "not taken" but that may cause
user-visible effects (cache, etc).
prodded by dragonflybsd commit 9474cbef7fcb61cd268019694d94db6a75af7dbe
ok deraadt@ kettenis@
Diffstat (limited to 'sys/arch/amd64/conf')
0 files changed, 0 insertions, 0 deletions