Centos 7 kernel patch for Intel flaw for spectre/meltdown

centos7_patching.txt

sudo rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
sudo rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
sudo yum repolist
sudo yum --enablerepo=elrepo-kernel install kernel-ml
sudo yum repolist all

# check the groub entries for the latest Kernel 4.xx
sudo awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg

# Results should be something like this
# 0 : CentOS Linux (4.15.0-1.el7.elrepo.x86_64) 7 (Core)
# 1 : CentOS Linux (3.10.0-693.17.1.el7.x86_64) 7 (Core)
# 2 : CentOS Linux (3.10.0-514.21.1.el7.x86_64) 7 (Core)
# 3 : CentOS Linux (3.10.0-514.16.1.el7.x86_64) 7 (Core)
# 4 : CentOS Linux (3.10.0-327.10.1.el7.x86_64) 7 (Core)
# 5 : CentOS Linux (0-rescue-f32e0af35637b5dfcbedcb0a1de8dca1) 7 (Core)

sudo grub2-set-default 0
sudo grub2-mkconfig -o /boot/grub2/grub.cfg
sudo reboot

# upon reboot you should get the latest kernel
uname -r

4.15.0-1.el7.elrepo.x86_64