How to Change SElinux to permissive For Galaxy A8 Rooted Stock Marshmallow?? Help Plz

Guys Help me
Need to Change my selinux permissive. Selinux chnger app not working. Any fixed solution for these in marshmallow. Previously in lollipop its work fine by spaceXkernal root. Guys also wanted to know if any custom kernal is available for A800F

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