#! /bin/bash -efu

# Trigger microcode reload with additional check for BDW-EP that can have

# microcode reloaded only in case kernel has specific patches.

#

# SPDX-License-Identifier: CC0-1.0

CHECK_CAVEATS=/usr/libexec/microcode_ctl/check_caveats

IGNORE_HYPERVISOR="/etc/microcode_ctl/ignore-hypervisor-flag"

[ -e "$IGNORE_HYPERVISOR" ] || {

	if grep -q '^flags[[:space:]]*:.* hypervisor\( .*\)\?$' /proc/cpuinfo

	then

		exit 0

	fi

}

"$CHECK_CAVEATS" -m > /dev/null || exit 0

echo 2>/dev/null 1 > /sys/devices/system/cpu/microcode/reload || :

exit 0