x86: let MPS support be selectable, v2

v2: seperate "fix for compiling when MPPARSE is not set" to another patch
    make X86_MPPARSE to be selectable only when acpi is set and
    X86_MPPARSE will be set if acpi is not set.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 21 insertions, 9 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7ebd986050a8..0804a889c27b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -230,6 +230,27 @@ config SMP
 
           If you don't know what to do here, say N.
 
+config X86_FIND_SMP_CONFIG
+        def_bool y
+        depends on X86_MPPARSE || X86_VOYAGER || X86_VISWS
+        depends on X86_32
+
+if ACPI
+config X86_MPPARSE
+        def_bool y
+        bool "Enable MPS table"
+        depends on ((X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64)
+        help
+          For old smp systems that do not have proper acpi support. Newer systems
+          (esp with 64bit cpus) with acpi support, MADT and DSDT will override it
+endif
+
+if !ACPI
+config X86_MPPARSE
+        def_bool y
+        depends on ((X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64)
+endif
+
 choice
         prompt "Subarchitecture Type"
         default X86_PC
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 253e7a5706d3..f7d413d6101a 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -129,15 +129,6 @@ config 4KSTACKS
           on the VM subsystem for higher order allocations. This option
           will also use IRQ stacks to compensate for the reduced stackspace.
 
-config X86_FIND_SMP_CONFIG
-        def_bool y
-        depends on X86_MPPARSE || X86_VOYAGER || X86_VISWS
-        depends on X86_32
-
-config X86_MPPARSE
-        def_bool y
-        depends on (X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64
-
 config DOUBLEFAULT
         default y
         bool "Enable doublefault exception handler" if EMBEDDED