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

[~andy/linux] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index edd300aca17309cfb6c2e1ef9cef2fcf36de1d74..fd3386242cf06a9f588a363362ecc94b646ddc41 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -67,7 +67,7 @@ config DISCONTIGMEM
 
 config SPARSEMEM
        def_bool y
-       depends on SPARSEMEM_MANUAL
+       depends on (!SELECT_MEMORY_MODEL && ARCH_SPARSEMEM_ENABLE) || SPARSEMEM_MANUAL
 
 config FLATMEM
        def_bool y
@@ -129,7 +129,7 @@ config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
        depends on SPARSEMEM || X86_64_ACPI_NUMA
        depends on HOTPLUG && !(HIBERNATION && !S390) && ARCH_ENABLE_MEMORY_HOTPLUG
-       depends on (IA64 || X86 || PPC64 || SUPERH || S390)
+       depends on (IA64 || X86 || PPC_BOOK3S_64 || SUPERH || S390)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
        depends on SPARSEMEM && HOTPLUG && HIBERNATION && !S390
@@ -224,7 +224,9 @@ config KSM
          the many instances by a single resident page with that content, so
          saving memory until one or another app needs to modify the content.
          Recommended for use with KVM, or with other duplicative applications.
-         See Documentation/vm/ksm.txt for more information.
+         See Documentation/vm/ksm.txt for more information: KSM is inactive
+         until a program has madvised that an area is MADV_MERGEABLE, and
+         root has set /sys/kernel/mm/ksm/run to 1 (if CONFIG_SYSFS is set).
 
 config DEFAULT_MMAP_MIN_ADDR
         int "Low address space to protect from user allocation"