Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cc91e5e..2995788 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -24,6 +24,7 @@ config X86
        select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
        select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
        select ARCH_HAS_FAST_MULTIPLIER
+       select ARCH_HAS_GCOV_PROFILE_ALL
        select ARCH_MIGHT_HAVE_PC_PARPORT
        select ARCH_MIGHT_HAVE_PC_SERIO
        select HAVE_AOUT if X86_32
@@ -144,7 +145,7 @@ config INSTRUCTION_DECODER
 
 config PERF_EVENTS_INTEL_UNCORE
        def_bool y
-       depends on PERF_EVENTS && SUP_SUP_INTEL && PCI
+       depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
 
 config OUTPUT_FORMAT
        string
@@ -988,6 +989,24 @@ config X86_ESPFIX64
        def_bool y
        depends on X86_16BIT && X86_64
 
+config X86_VSYSCALL_EMULATION
+       bool "Enable vsyscall emulation" if EXPERT
+       default y
+       depends on X86_64
+       ---help---
+        This enables emulation of the legacy vsyscall page.  Disabling
+        it is roughly equivalent to booting with vsyscall=none, except
+        that it will also disable the helpful warning if a program
+        tries to use a vsyscall.  With this option set to N, offending
+        programs will just segfault, citing addresses of the form
+        0xffffffffff600?00.
+
+        This option is required by many programs built before 2013, and
+        care should be used even with newer programs if set to N.
+
+        Disabling this option saves about 7K of kernel size and
+        possibly 4K of additional runtime pagetable memory.
+
 config TOSHIBA
        tristate "Toshiba Laptop support"
        depends on X86_32