x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / arch / Kconfig

diff --git a/arch/Kconfig b/arch/Kconfig
index 180ea33..659bdd0 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -383,6 +383,24 @@ config GCC_PLUGIN_SANCOV
          gcc-4.5 on). It is based on the commit "Add fuzzing coverage support"
          by Dmitry Vyukov <dvyukov@google.com>.
 
+config GCC_PLUGIN_LATENT_ENTROPY
+       bool "Generate some entropy during boot and runtime"
+       depends on GCC_PLUGINS
+       help
+         By saying Y here the kernel will instrument some kernel code to
+         extract some entropy from both original and artificially created
+         program state.  This will help especially embedded systems where
+         there is little 'natural' source of entropy normally.  The cost
+         is some slowdown of the boot process (about 0.5%) and fork and
+         irq processing.
+
+         Note that entropy extracted this way is not cryptographically
+         secure!
+
+         This plugin was ported from grsecurity/PaX. More information at:
+          * https://grsecurity.net/
+          * https://pax.grsecurity.net/
+
 config HAVE_CC_STACKPROTECTOR
        bool
        help
@@ -450,6 +468,27 @@ config CC_STACKPROTECTOR_STRONG
 
 endchoice
 
+config THIN_ARCHIVES
+       bool
+       help
+         Select this if the architecture wants to use thin archives
+         instead of ld -r to create the built-in.o files.
+
+config LD_DEAD_CODE_DATA_ELIMINATION
+       bool
+       help
+         Select this if the architecture wants to do dead code and
+         data elimination with the linker by compiling with
+         -ffunction-sections -fdata-sections and linking with
+         --gc-sections.
+
+         This requires that the arch annotates or otherwise protects
+         its external entry points from being discarded. Linker scripts
+         must also merge .text.*, .data.*, and .bss.* correctly into
+         output sections. Care must be taken not to pull in unrelated
+         sections (e.g., '.text.init'). Typically '.' in section names
+         is used to distinguish them from label names / C identifiers.
+
 config HAVE_ARCH_WITHIN_STACK_FRAMES
        bool
        help