X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=arch%2Fx86%2FKconfig;h=d02b04d3009668b45aa050484e346d900097f4bf;hb=370d33da35e31c1544eb77bcf2539f09b1064b9c;hp=819f8c2e2c67695cecbf88ca11d3b2765e873e0f;hpb=d11f96d0c0c30e6ed73049c752a1ca7621e7062f;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 819f8c2..d02b04d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -468,6 +468,18 @@ config RETPOLINE
 	  branches. Requires a compiler with -mindirect-branch=thunk-extern
 	  support for full protection. The kernel may run slower.
 
+config CC_HAS_SLS
+	def_bool $(cc-option,-mharden-sls=all)
+
+config SLS
+	bool "Mitigate Straight-Line-Speculation"
+	depends on CC_HAS_SLS && X86_64
+	default n
+	help
+	  Compile the kernel with straight-line-speculation options to guard
+	  against straight line speculation. The kernel image might be slightly
+	  larger.
+
 config X86_CPU_RESCTRL
 	bool "x86 CPU resource control support"
 	depends on X86 && (CPU_SUP_INTEL || CPU_SUP_AMD)