[PATCH RFC 14/43] x86/Kconfig: Introduce new Kconfig for PIE kernel building

[Hou Wenlong]

Add a new Kconfig to control the behaviour of PIE building, and disable
it now.

Suggested-by: Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
Signed-off-by: Hou Wenlong <houwenlong.hwl@xxxxxxxxxxxx>
Cc: Thomas Garnier <thgarnie@xxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
---
 arch/x86/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c94297369448..68e5da464b96 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2208,6 +2208,10 @@ config RELOCATABLE
 	  it has been loaded at and the compile time physical address
 	  (CONFIG_PHYSICAL_START) is used as the minimum location.
 
+config X86_PIE
+	def_bool n
+	depends on X86_64
+
 config RANDOMIZE_BASE
 	bool "Randomize the address of the kernel image (KASLR)"
 	depends on RELOCATABLE
-- 
2.31.1