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| author |   Andi Kleen <ak@suse.de> | 2007-05-02 19:27:20 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:20 +0200 |
| commit | c7f81c9453375d6416658995eafd3397cb9bba1d (patch) | |
| tree | 44e018745a0b7c12b127eb54106f2f0c2bb5a570 /arch/i386/Kconfig.cpu | |
| parent | [PATCH] i386: Drop -traditional in arch/i386/boot (diff) | |
| download | linux-dev-c7f81c9453375d6416658995eafd3397cb9bba1d.tar.xz linux-dev-c7f81c9453375d6416658995eafd3397cb9bba1d.zip | |
[PATCH] i386: Verify important CPUID bits in real mode
Check some CPUID bits that are needed for compiler generated early in boot.
When the system is still in real mode before changing the VESA BIOS mode
it is possible to still display an visible error message on the screen.
Similar to x86-64.
Includes cleanups from Eric Biederman
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/i386/Kconfig.cpu')
| -rw-r--r-- | arch/i386/Kconfig.cpu | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu index b1af9f50a143..dce6124cb842 100644 --- a/arch/i386/Kconfig.cpu +++ b/arch/i386/Kconfig.cpu @@ -240,14 +240,19 @@ config X86_L1_CACHE_SHIFT default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 +config X86_XADD + bool + depends on !M386 + default y + config RWSEM_GENERIC_SPINLOCK bool - depends on M386 + depends on !X86_XADD default y config RWSEM_XCHGADD_ALGORITHM bool - depends on !M386 + depends on X86_XADD default y config ARCH_HAS_ILOG2_U32 @@ -331,3 +336,16 @@ config X86_TSC bool 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 default y + +# this should be set for all -march=.. options where the compiler +# generates cmov. +config X86_CMOV + bool + depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) + default y + +config X86_MINIMUM_CPU_MODEL + int + default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP + default "0" + |