x86, mm: Allow ZONE_DMA to be configurable

[pandora-kernel.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 140e254..0eb801a 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -71,6 +71,7 @@ config X86
        select GENERIC_IRQ_SHOW
        select IRQ_FORCED_THREADING
        select USE_GENERIC_SMP_HELPERS if SMP
+       select ARCH_NO_SYSDEV_OPS
 
 config INSTRUCTION_DECODER
        def_bool (KPROBES || PERF_EVENTS)
@@ -111,7 +112,14 @@ config MMU
        def_bool y
 
 config ZONE_DMA
-       def_bool y
+       bool "DMA memory allocation support" if EXPERT
+       default y
+       help
+         DMA memory allocation support allows devices with less than 32-bit
+         addressing to allocate within the first 16MB of address space.
+         Disable if no such devices will be used.
+
+         If unsure, say Y.
 
 config SBUS
        bool
@@ -1173,7 +1181,7 @@ comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
 config AMD_NUMA
        def_bool y
        prompt "Old style AMD Opteron NUMA detection"
-       depends on X86_64 && NUMA && PCI
+       depends on NUMA && PCI
        ---help---
          Enable AMD NUMA node topology detection.  You should say Y here if
          you have a multi processor AMD system. This uses an old method to
@@ -1200,7 +1208,7 @@ config NODES_SPAN_OTHER_NODES
 
 config NUMA_EMU
        bool "NUMA emulation"
-       depends on X86_64 && NUMA
+       depends on NUMA
        ---help---
          Enable NUMA emulation. A flat machine will be split
          into virtual nodes when booted with "numa=fake=N", where N is the
@@ -1222,6 +1230,10 @@ config HAVE_ARCH_BOOTMEM
        def_bool y
        depends on X86_32 && NUMA
 
+config HAVE_ARCH_ALLOC_REMAP
+       def_bool y
+       depends on X86_32 && NUMA
+
 config ARCH_HAVE_MEMORY_PRESENT
        def_bool y
        depends on X86_32 && DISCONTIGMEM
@@ -1230,13 +1242,9 @@ config NEED_NODE_MEMMAP_SIZE
        def_bool y
        depends on X86_32 && (DISCONTIGMEM || SPARSEMEM)
 
-config HAVE_ARCH_ALLOC_REMAP
-       def_bool y
-       depends on X86_32 && NUMA
-
 config ARCH_FLATMEM_ENABLE
        def_bool y
-       depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && !NUMA
+       depends on X86_32 && !NUMA
 
 config ARCH_DISCONTIGMEM_ENABLE
        def_bool y
@@ -1246,20 +1254,16 @@ config ARCH_DISCONTIGMEM_DEFAULT
        def_bool y
        depends on NUMA && X86_32
 
-config ARCH_PROC_KCORE_TEXT
-       def_bool y
-       depends on X86_64 && PROC_KCORE
-
-config ARCH_SPARSEMEM_DEFAULT
-       def_bool y
-       depends on X86_64
-
 config ARCH_SPARSEMEM_ENABLE
        def_bool y
        depends on X86_64 || NUMA || (EXPERIMENTAL && X86_32) || X86_32_NON_STANDARD
        select SPARSEMEM_STATIC if X86_32
        select SPARSEMEM_VMEMMAP_ENABLE if X86_64
 
+config ARCH_SPARSEMEM_DEFAULT
+       def_bool y
+       depends on X86_64
+
 config ARCH_SELECT_MEMORY_MODEL
        def_bool y
        depends on ARCH_SPARSEMEM_ENABLE
@@ -1268,6 +1272,10 @@ config ARCH_MEMORY_PROBE
        def_bool X86_64
        depends on MEMORY_HOTPLUG
 
+config ARCH_PROC_KCORE_TEXT
+       def_bool y
+       depends on X86_64 && PROC_KCORE
+
 config ILLEGAL_POINTER_VALUE
        hex
        default 0 if X86_32
@@ -1702,10 +1710,6 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE
        def_bool y
        depends on MEMORY_HOTPLUG
 
-config HAVE_ARCH_EARLY_PFN_TO_NID
-       def_bool X86_64
-       depends on NUMA
-
 config USE_PERCPU_NUMA_NODE_ID
        def_bool y
        depends on NUMA