1 files changed, 43 insertions, 15 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1042d69b267d..5e2919c0ff92 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -235,6 +235,20 @@ config SMP
 
           If you don't know what to do here, say N.
 
+config X86_X2APIC
+        bool "Support x2apic"
+        depends on X86_LOCAL_APIC && X86_64
+        ---help---
+          This enables x2apic support on CPUs that have this feature.
+
+          This allows 32-bit apic IDs (so it can support very large systems),
+          and accesses the local apic via MSRs not via mmio.
+
+          ( On certain CPU models you may need to enable INTR_REMAP too,
+            to get functional x2apic mode. )
+
+          If you don't know what to do here, say N.
+
 config SPARSE_IRQ
         bool "Support sparse irq numbering"
         depends on PCI_MSI || HT_IRQ
@@ -271,6 +285,7 @@ config X86_BIGSMP
         ---help---
           This option is needed for the systems that have more than 8 CPUs
 
+if X86_32
 config X86_EXTENDED_PLATFORM
         bool "Support for extended (non-PC) x86 platforms"
         default y
@@ -279,12 +294,36 @@ config X86_EXTENDED_PLATFORM
           standard PC platforms. (which covers the vast majority of
           systems out there.)
 
-          If you enable this option then you'll be able to select a number
-          of non-PC x86 platforms.
+          If you enable this option then you'll be able to select support
+          for the following (non-PC) 32 bit x86 platforms:
+                AMD Elan
+                NUMAQ (IBM/Sequent)
+                RDC R-321x SoC
+                SGI 320/540 (Visual Workstation)
+                Summit/EXA (IBM x440)
+                Unisys ES7000 IA32 series
 
           If you have one of these systems, or if you want to build a
           generic distribution kernel, say Y here - otherwise say N.
+endif
 
+if X86_64
+config X86_EXTENDED_PLATFORM
+        bool "Support for extended (non-PC) x86 platforms"
+        default y
+        ---help---
+          If you disable this option then the kernel will only support
+          standard PC platforms. (which covers the vast majority of
+          systems out there.)
+
+          If you enable this option then you'll be able to select support
+          for the following (non-PC) 64 bit x86 platforms:
+                ScaleMP vSMP
+                SGI Ultraviolet
+
+          If you have one of these systems, or if you want to build a
+          generic distribution kernel, say Y here - otherwise say N.
+endif
 # This is an alphabetically sorted list of 64 bit extended platforms
 # Please maintain the alphabetic order if and when there are additions
 
@@ -302,6 +341,7 @@ config X86_UV
         bool "SGI Ultraviolet"
         depends on X86_64
         depends on X86_EXTENDED_PLATFORM
+        select X86_X2APIC
         ---help---
           This option is needed in order to support SGI Ultraviolet systems.
           If you don't have one of these, you should say N here.
@@ -382,19 +422,6 @@ config X86_ES7000
           Support for Unisys ES7000 systems.  Say 'Y' here if this kernel is
           supposed to run on an IA32-based Unisys ES7000 system.
 
-config X86_VOYAGER
-        bool "Voyager (NCR)"
-        depends on SMP && !PCI && BROKEN
-        depends on X86_32_NON_STANDARD
-        ---help---
-          Voyager is an MCA-based 32-way capable SMP architecture proprietary
-          to NCR Corp.  Machine classes 345x/35xx/4100/51xx are Voyager-based.
-
-          *** WARNING ***
-
-          If you do not specifically know you have a Voyager based machine,
-          say N here, otherwise the kernel you build will not be bootable.
-
 config SCHED_OMIT_FRAME_POINTER
         def_bool y
         prompt "Single-depth WCHAN output"
@@ -1828,6 +1855,7 @@ config DMAR_FLOPPY_WA
 config INTR_REMAP
         bool "Support for Interrupt Remapping (EXPERIMENTAL)"
         depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI && EXPERIMENTAL
+        select X86_X2APIC
         ---help---
           Supports Interrupt remapping for IO-APIC and MSI devices.
           To use x2apic mode in the CPU's which support x2APIC enhancements or