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| author | Jan Beulich <jbeulich@novell.com> | 2008-04-22 16:27:29 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-05-12 21:28:09 +0200 |
| commit | f8096f92b87d81c55ed63964d27baa9ce5ffe508 (patch) | |
| tree | fe9686eea010725efc815d42e91154f8cd5c5f13 | |
| parent | 492c2e476eac010962850006c49df326919b284c (diff) | |
| download | linux-f8096f92b87d81c55ed63964d27baa9ce5ffe508.tar.gz linux-f8096f92b87d81c55ed63964d27baa9ce5ffe508.tar.bz2 linux-f8096f92b87d81c55ed63964d27baa9ce5ffe508.zip | |
x86: separate cmpxchg8b checking from PAE checking
.. allowing the former to be use in non-PAE kernels, too.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/Kconfig.cpu | 4 | ||||
| -rw-r--r-- | include/asm-x86/required-features.h | 6 |
2 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 2ad6301849a1..3d22bb8175b4 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -399,6 +399,10 @@ 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 +config X86_CMPXCHG64 + def_bool y + depends on X86_PAE || X86_64 + # this should be set for all -march=.. options where the compiler # generates cmov. config X86_CMOV diff --git a/include/asm-x86/required-features.h b/include/asm-x86/required-features.h index 7400d3ad75c6..8c387198ca88 100644 --- a/include/asm-x86/required-features.h +++ b/include/asm-x86/required-features.h @@ -19,9 +19,13 @@ #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) # define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) -# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) #else # define NEED_PAE 0 +#endif + +#ifdef CONFIG_X86_CMPXCHG64 +# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) +#else # define NEED_CX8 0 #endif |