diff options
Diffstat (limited to 'arch/x86/Kconfig.cpu')
| -rw-r--r-- | arch/x86/Kconfig.cpu | 65 |
1 files changed, 31 insertions, 34 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index c30162202dc4..e09a6b73a1aa 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -219,10 +219,10 @@ config MGEODEGX1 Select this for a Geode GX1 (Cyrix MediaGX) chip. config MGEODE_LX - bool "Geode GX/LX" + bool "Geode GX/LX" depends on X86_32 - help - Select this for AMD Geode GX and LX processors. + help + Select this for AMD Geode GX and LX processors. config MCYRIXIII bool "CyrixIII/VIA-C3" @@ -258,7 +258,7 @@ config MPSC Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey Xeon CPUs with Intel 64bit which is compatible with x86-64. Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the - Netburst core and shouldn't use this option. You can distinguish them + Netburst core and shouldn't use this option. You can distinguish them using the cpu family field in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one. @@ -317,81 +317,75 @@ config X86_L1_CACHE_SHIFT default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 config X86_XADD - bool + def_bool y depends on X86_32 && !M386 - default y config X86_PPRO_FENCE - bool + bool "PentiumPro memory ordering errata workaround" depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 - default y + help + Old PentiumPro multiprocessor systems had errata that could cause memory + operations to violate the x86 ordering standard in rare cases. Enabling this + option will attempt to work around some (but not all) occurances of + this problem, at the cost of much heavier spinlock and memory barrier + operations. + + If unsure, say n here. Even distro kernels should think twice before enabling + this: there are few systems, and an unlikely bug. config X86_F00F_BUG - bool + def_bool y depends on M586MMX || M586TSC || M586 || M486 || M386 - default y config X86_WP_WORKS_OK - bool + def_bool y depends on X86_32 && !M386 - default y config X86_INVLPG - bool + def_bool y depends on X86_32 && !M386 - default y config X86_BSWAP - bool + def_bool y depends on X86_32 && !M386 - default y config X86_POPAD_OK - bool + def_bool y depends on X86_32 && !M386 - default y config X86_ALIGNMENT_16 - bool + def_bool y depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 - default y config X86_GOOD_APIC - bool + def_bool y depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 || X86_64 - default y config X86_INTEL_USERCOPY - bool + def_bool y depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 - default y config X86_USE_PPRO_CHECKSUM - bool + def_bool y depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 - default y config X86_USE_3DNOW - bool + def_bool y depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML - default y config X86_OOSTORE - bool + def_bool y depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR - default y config X86_TSC - bool + 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 - default y # this should be set for all -march=.. options where the compiler # generates cmov. config X86_CMOV - bool + def_bool y depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) - default y config X86_MINIMUM_CPU_FAMILY int @@ -399,3 +393,6 @@ config X86_MINIMUM_CPU_FAMILY default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK) default "3" +config X86_DEBUGCTLMSR + def_bool y + depends on !(M586MMX || M586TSC || M586 || M486 || M386) |