18a272653SPeter Holm#!/bin/sh 28a272653SPeter Holm 38a272653SPeter Holm# 4*4d846d26SWarner Losh# SPDX-License-Identifier: BSD-2-Clause 58a272653SPeter Holm# 68a272653SPeter Holm# Copyright (c) 2019 Dell EMC Isilon 78a272653SPeter Holm# 88a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 98a272653SPeter Holm# modification, are permitted provided that the following conditions 108a272653SPeter Holm# are met: 118a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 128a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 138a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 148a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 158a272653SPeter Holm# documentation and/or other materials provided with the distribution. 168a272653SPeter Holm# 178a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 188a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 198a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 208a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 218a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 228a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 238a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 248a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 258a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 268a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 278a272653SPeter Holm# SUCH DAMAGE. 288a272653SPeter Holm# 298a272653SPeter Holm 308a272653SPeter Holm# Simple test of kpti (Kernel page-table isolation) enable / disable 318a272653SPeter Holm 328a272653SPeter Holm# Page fault seen: https://people.freebsd.org/~pho/stress/log/dougm061.txt 338a272653SPeter Holm# Fixed by r354132 348a272653SPeter Holm 358a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 368a272653SPeter Holmproccontrol -m kpti -q 2> /dev/null || exit 0 378a272653SPeter Holm[ `sysctl -n vm.pmap.pti` -eq 1 ] && echo "Page Table Isolation enabled" || 388a272653SPeter Holm echo "Page Table Isolation disabled" 398a272653SPeter Holm 408a272653SPeter Holmprog=date 418a272653SPeter Holm[ $# -eq 1 ] && prog=$1 428a272653SPeter Holmstart=`date +%s` 438a272653SPeter Holmwhile [ $((`date +%s` - start)) -lt 120 ]; do 448a272653SPeter Holm for i in `jot 50`; do 458a272653SPeter Holm proccontrol -m kpti -s disable $prog & 468a272653SPeter Holm proccontrol -m kpti -s enable $prog & 478a272653SPeter Holm done > /dev/null 488a272653SPeter Holm wait 498a272653SPeter Holmdone 508a272653SPeter Holmexit 0 51