x86: cleanup early per cpu variables/accesses v4

[linux-2.6-omap-h63xx.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 52e18e6d2ba0aae955bf1624e8370e18229fb861..4469a0db1ae1da2d67b6571dfdcbe4e6ce1c3987 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -121,7 +121,7 @@ config ARCH_HAS_CACHE_LINE_SIZE
        def_bool y
 
 config HAVE_SETUP_PER_CPU_AREA
-       def_bool X86_64 || (X86_SMP && !X86_VOYAGER)
+       def_bool X86_64_SMP || (X86_SMP && !X86_VOYAGER)
 
 config HAVE_CPUMASK_OF_CPU_MAP
        def_bool X86_64_SMP
@@ -383,6 +383,7 @@ config VMI
 config KVM_CLOCK
        bool "KVM paravirtualized clock"
        select PARAVIRT
+       select PARAVIRT_CLOCK
        depends on !(X86_VISWS || X86_VOYAGER)
        help
          Turning on this option will allow you to run a paravirtualized clock
@@ -410,6 +411,10 @@ config PARAVIRT
          over full virtualization.  However, when run without a hypervisor
          the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_CLOCK
+       bool
+       default n
+
 endif
 
 config MEMTEST_BOOTPARAM
@@ -556,20 +561,35 @@ config SWIOTLB
 
 config IOMMU_HELPER
        def_bool (CALGARY_IOMMU || GART_IOMMU || SWIOTLB)
+config MAXSMP
+       bool "Configure Maximum number of SMP Processors and NUMA Nodes"
+       depends on X86_64 && SMP
+       default n
+       help
+         Configure maximum number of CPUS and NUMA Nodes for this architecture.
+         If unsure, say N.
+
+if MAXSMP
+config NR_CPUS
+       int
+       default "4096"
+endif
 
+if !MAXSMP
 config NR_CPUS
-       int "Maximum number of CPUs (2-255)"
-       range 2 255
+       int "Maximum number of CPUs (2-4096)"
+       range 2 4096
        depends on SMP
        default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
        default "8"
        help
          This allows you to specify the maximum number of CPUs which this
-         kernel will support.  The maximum supported value is 255 and the
+         kernel will support.  The maximum supported value is 4096 and the
          minimum value which makes sense is 2.
 
          This is purely to save memory - each supported CPU adds
          approximately eight kilobytes to the kernel image.
+endif
 
 config SCHED_SMT
        bool "SMT (Hyperthreading) scheduler support"
@@ -960,13 +980,25 @@ config NUMA_EMU
          into virtual nodes when booted with "numa=fake=N", where N is the
          number of nodes. This is only useful for debugging.
 
+if MAXSMP
+
+config NODES_SHIFT
+       int
+       default "9"
+endif
+
+if !MAXSMP
 config NODES_SHIFT
-       int "Max num nodes shift(1-15)"
-       range 1 15  if X86_64
+       int "Maximum NUMA Nodes (as a power of 2)"
+       range 1 9   if X86_64
        default "6" if X86_64
        default "4" if X86_NUMAQ
        default "3"
        depends on NEED_MULTIPLE_NODES
+       help
+         Specify the maximum number of NUMA Nodes available on the target
+         system.  Increases memory reserved to accomodate various tables.
+endif
 
 config HAVE_ARCH_BOOTMEM_NODE
        def_bool y