arm64: dts: rockchip: rk3328: Use new define for RK3328 pins

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 91a2f4d4c970b60a6d512ed3aa0b379f1e8c711e..4bda2c06fe0543cd3356877c5bfd61c3a4f21a17 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -719,6 +719,14 @@ config SETEND_EMULATION
          If unsure, say Y
 endif
 
+config ARM64_SW_TTBR0_PAN
+       bool "Emulate Privileged Access Never using TTBR0_EL1 switching"
+       help
+         Enabling this option prevents the kernel from accessing
+         user-space memory directly by pointing TTBR0_EL1 to a reserved
+         zeroed area and reserved ASID. The user access routines
+         restore the valid TTBR0_EL1 temporarily.
+
 menu "ARMv8.1 architectural features"
 
 config ARM64_HW_AFDBM