x86/pti: Enable PTI by default

This really want's to be enabled by default. Users who know what they are
doing can disable it either in the config or on the kernel command line.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org

diff --git a/security/Kconfig b/security/Kconfig
index a623d13..3d4debd 100644 (file)
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -56,6 +56,7 @@ config SECURITY_NETWORK
 
 config PAGE_TABLE_ISOLATION
        bool "Remove the kernel mapping in user mode"
+       default y
        depends on X86_64 && !UML
        help
          This feature reduces the number of hardware side channels by