x86: require family >= 6 if we are using P6 NOPs

The P6 family of NOPs are only available on family >= 6 or above, so
enforce that in the boot code.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index e09a6b73a1a..86fd2a0e459 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -377,6 +377,10 @@ config X86_OOSTORE
         def_bool y
         depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
 
+config X86_P6_NOP
+        def_bool y
+        depends on (M686 || MPENTIUMII || MPENTIUMIII || MPENTIUMM || MCORE2 || PENTIUM4)
+
 config X86_TSC
         def_bool y
         depends on ((MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ) || X86_64
@@ -390,6 +394,7 @@ config X86_CMOV
 config X86_MINIMUM_CPU_FAMILY
         int
         default "64" if X86_64
+        default "6" if X86_32 && X86_P6_NOP
         default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK)
         default "3"