Merge branch 'linus' into perfcounters/core

[linux-drm-fsl-dcu.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 9c39095b33fc0d1dbdc7f92408314dae1ed38e87..97d3bd17b7dfcfe6fd3b69e6c8074103c59a9268 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -391,6 +391,13 @@ config X86_RDC321X
          as R-8610-(G).
          If you don't have one of these chips, you should say N here.
 
+config X86_UV
+       bool "SGI Ultraviolet"
+       depends on X86_64
+       help
+         This option is needed in order to support SGI Ultraviolet systems.
+         If you don't have one of these, you should say N here.
+
 config SCHED_OMIT_FRAME_POINTER
        def_bool y
        prompt "Single-depth WCHAN output"
@@ -685,6 +692,7 @@ config X86_UP_IOAPIC
 config X86_LOCAL_APIC
        def_bool y
        depends on X86_64 || (X86_32 && (X86_UP_APIC || (SMP && !X86_VOYAGER) || X86_GENERICARCH))
+       select HAVE_PERF_COUNTERS if (!M386 && !M486)
 
 config X86_IO_APIC
        def_bool y
@@ -1340,13 +1348,17 @@ config SECCOMP
 
          If unsure, say Y. Only embedded should say N here.
 
+config CC_STACKPROTECTOR_ALL
+       bool
+
 config CC_STACKPROTECTOR
        bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
-       depends on X86_64 && EXPERIMENTAL && BROKEN
+       depends on X86_64
+       select CC_STACKPROTECTOR_ALL
        help
-         This option turns on the -fstack-protector GCC feature. This
-         feature puts, at the beginning of critical functions, a canary
-         value on the stack just before the return address, and validates
+          This option turns on the -fstack-protector GCC feature. This
+         feature puts, at the beginning of functions, a canary value on
+         the stack just before the return address, and validates
          the value just before actually returning.  Stack based buffer
          overflows (that need to overwrite this return address) now also
          overwrite the canary, which gets detected and the attack is then
@@ -1354,15 +1366,8 @@ config CC_STACKPROTECTOR
 
          This feature requires gcc version 4.2 or above, or a distribution
          gcc with the feature backported. Older versions are automatically
-         detected and for those versions, this configuration option is ignored.
-
-config CC_STACKPROTECTOR_ALL
-       bool "Use stack-protector for all functions"
-       depends on CC_STACKPROTECTOR
-       help
-         Normally, GCC only inserts the canary value protection for
-         functions that use large-ish on-stack buffers. By enabling
-         this option, GCC will be asked to do this for ALL functions.
+         detected and for those versions, this configuration option is
+         ignored. (and a warning is printed during bootup)
 
 source kernel/Kconfig.hz