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

[linux-2.6] / arch / i386 / Kconfig

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index 361aca8b3ec3bc1ce7195babe77efa95d55aa965..abb582bc218fdf4207d3fa3ce92d753fffa35f40 100644 (file)
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -548,6 +548,7 @@ config HIGHMEM4G
 config HIGHMEM64G
        bool "64GB"
        depends on !M386 && !M486
+       select X86_PAE
        help
          Select this if you have a 32-bit processor and more than 4
          gigabytes of physical RAM.
@@ -577,12 +578,12 @@ choice
        config VMSPLIT_3G
                bool "3G/1G user/kernel split"
        config VMSPLIT_3G_OPT
-               depends on !HIGHMEM
+               depends on !X86_PAE
                bool "3G/1G user/kernel split (for full 1G low memory)"
        config VMSPLIT_2G
                bool "2G/2G user/kernel split"
        config VMSPLIT_2G_OPT
-               depends on !HIGHMEM
+               depends on !X86_PAE
                bool "2G/2G user/kernel split (for full 2G low memory)"
        config VMSPLIT_1G
                bool "1G/3G user/kernel split"
@@ -602,10 +603,15 @@ config HIGHMEM
        default y
 
 config X86_PAE
-       bool
-       depends on HIGHMEM64G
-       default y
+       bool "PAE (Physical Address Extension) Support"
+       default n
+       depends on !HIGHMEM4G
        select RESOURCES_64BIT
+       help
+         PAE is required for NX support, and furthermore enables
+         larger swapspace support for non-overcommit purposes. It
+         has the cost of more pagetable lookup overhead, and also
+         consumes more pagetable space per process.
 
 # Common NUMA Features
 config NUMA
@@ -821,6 +827,7 @@ config CRASH_DUMP
 
 config PHYSICAL_START
        hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
+       default "0x1000000" if X86_NUMAQ
        default "0x100000"
        help
          This gives the physical address where the kernel is loaded.