config M486
bool "486"
depends on X86_32
- help
+ ---help---
Select this for a 486 series processor, either Intel or one of the
compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
config M586
bool "586/K5/5x86/6x86/6x86MX"
depends on X86_32
- help
+ ---help---
Select this for an 586 or 686 series processor such as the AMD K5,
the Cyrix 5x86, 6x86 and 6x86MX. This choice does not
assume the RDTSC (Read Time Stamp Counter) instruction.
config M586TSC
bool "Pentium-Classic"
depends on X86_32
- help
+ ---help---
Select this for a Pentium Classic processor with the RDTSC (Read
Time Stamp Counter) instruction for benchmarking.
config M586MMX
bool "Pentium-MMX"
depends on X86_32
- help
+ ---help---
Select this for a Pentium with the MMX graphics/multimedia
extended instructions.
config M686
bool "Pentium-Pro"
depends on X86_32
- help
+ ---help---
Select this for Intel Pentium Pro chips. This enables the use of
Pentium Pro extended instructions, and disables the init-time guard
against the f00f bug found in earlier Pentiums.
config MPENTIUMII
bool "Pentium-II/Celeron(pre-Coppermine)"
depends on X86_32
- help
+ ---help---
Select this for Intel chips based on the Pentium-II and
pre-Coppermine Celeron core. This option enables an unaligned
copy optimization, compiles the kernel with optimization flags
config MPENTIUMIII
bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
depends on X86_32
- help
+ ---help---
Select this for Intel chips based on the Pentium-III and
Celeron-Coppermine core. This option enables use of some
extended prefetch instructions in addition to the Pentium II
config MPENTIUMM
bool "Pentium M"
depends on X86_32
- help
+ ---help---
Select this for Intel Pentium M (not Pentium-4 M)
notebook chips.
config MPENTIUM4
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
depends on X86_32
- help
+ ---help---
Select this for Intel Pentium 4 chips. This includes the
Pentium 4, Pentium D, P4-based Celeron and Xeon, and
Pentium-4 M (not Pentium M) chips. This option enables compile
config MK6
bool "K6/K6-II/K6-III"
depends on X86_32
- help
+ ---help---
Select this for an AMD K6-family processor. Enables use of
some extended instructions, and passes appropriate optimization
flags to GCC.
config MK7
bool "Athlon/Duron/K7"
depends on X86_32
- help
+ ---help---
Select this for an AMD Athlon K7-family processor. Enables use of
some extended instructions, and passes appropriate optimization
flags to GCC.
config MK8
bool "Opteron/Athlon64/Hammer/K8"
- help
- Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables
- use of some extended instructions, and passes appropriate optimization
- flags to GCC.
+ ---help---
+ Select this for an AMD Opteron or Athlon64 Hammer-family processor.
+ Enables use of some extended instructions, and passes appropriate
+ optimization flags to GCC.
config MCRUSOE
bool "Crusoe"
depends on X86_32
- help
+ ---help---
Select this for a Transmeta Crusoe processor. Treats the processor
like a 586 with TSC, and sets some GCC optimization flags (like a
Pentium Pro with no alignment requirements).
config MEFFICEON
bool "Efficeon"
depends on X86_32
- help
+ ---help---
Select this for a Transmeta Efficeon processor.
config MWINCHIPC6
bool "Winchip-C6"
depends on X86_32
- help
+ ---help---
Select this for an IDT Winchip C6 chip. Linux and GCC
treat this chip as a 586TSC with some extended instructions
and alignment requirements.
config MWINCHIP3D
bool "Winchip-2/Winchip-2A/Winchip-3"
depends on X86_32
- help
+ ---help---
Select this for an IDT Winchip-2, 2A or 3. Linux and GCC
treat this chip as a 586TSC with some extended instructions
and alignment requirements. Also enable out of order memory
config MGEODEGX1
bool "GeodeGX1"
depends on X86_32
- help
+ ---help---
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
depends on X86_32
- help
+ ---help---
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
depends on X86_32
- help
+ ---help---
Select this for a Cyrix III or C3 chip. Presently Linux and GCC
treat this chip as a generic 586. Whilst the CPU is 686 class,
it lacks the cmov extension which gcc assumes is present when
config MVIAC3_2
bool "VIA C3-2 (Nehemiah)"
depends on X86_32
- help
+ ---help---
Select this for a VIA C3 "Nehemiah". Selecting this enables usage
of SSE and tells gcc to treat the CPU as a 686.
Note, this kernel will not boot on older (pre model 9) C3s.
config MVIAC7
bool "VIA C7"
depends on X86_32
- help
+ ---help---
Select this for a VIA C7. Selecting this uses the correct cache
shift and tells gcc to treat the CPU as a 686.
config MPSC
bool "Intel P4 / older Netburst based Xeon"
depends on X86_64
- help
+ ---help---
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
config MCORE2
bool "Core 2/newer Xeon"
- help
- Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx)
- CPUs. You can distinguish newer from older Xeons by the CPU family
- in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo)
+ ---help---
+
+ Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
+ 53xx) CPUs. You can distinguish newer from older Xeons by the CPU
+ family in /proc/cpuinfo. Newer ones have 6 and older ones 15
+ (not a typo)
+
+config MATOM
+ bool "Intel Atom"
+ ---help---
+
+ Select this for the Intel Atom platform. Intel Atom CPUs have an
+ in-order pipelining architecture and thus can benefit from
+ accordingly optimized code. Use a recent GCC with specific Atom
+ support in order to fully benefit from selecting this option.
config GENERIC_CPU
bool "Generic-x86-64"
depends on X86_64
- help
+ ---help---
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
config X86_GENERIC
bool "Generic x86 support"
depends on X86_32
- help
+ ---help---
Instead of just including optimizations for the selected
x86 variant (e.g. PII, Crusoe or Athlon), include some more
generic optimizations as well. This will make the kernel
#
# Define implied options from the CPU selection here
-config X86_L1_CACHE_BYTES
- int
- default "128" if GENERIC_CPU || MPSC
- default "64" if MK8 || MCORE2
- depends on X86_64
-
-config X86_INTERNODE_CACHE_BYTES
+config X86_INTERNODE_CACHE_SHIFT
int
- default "4096" if X86_VSMP
- default X86_L1_CACHE_BYTES if !X86_VSMP
- depends on X86_64
+ default "12" if X86_VSMP
+ default "7" if NUMA
+ default X86_L1_CACHE_SHIFT
config X86_CMPXCHG
def_bool X86_64 || (X86_32 && !M386)
config X86_L1_CACHE_SHIFT
int
- default "7" if MPENTIUM4 || X86_GENERIC || GENERIC_CPU || MPSC
+ default "7" if MPENTIUM4 || MPSC
+ default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
default "5" if MWINCHIP3D || 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
def_bool y
- depends on X86_32 && !M386
+ depends on X86_64 || !M386
config X86_PPRO_FENCE
bool "PentiumPro memory ordering errata workaround"
depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
- 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.
+ ---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.
+ 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
def_bool y
depends on M586MMX || M586TSC || M586 || M486 || M386
+config X86_INVD_BUG
+ def_bool y
+ depends on M486 || M386
+
config X86_WP_WORKS_OK
def_bool y
depends on !M386
config X86_USE_PPRO_CHECKSUM
def_bool y
- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2
+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM
config X86_USE_3DNOW
def_bool y
config X86_TSC
def_bool y
- depends on ((MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ) || X86_64
+ depends on ((MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) && !X86_NUMAQ) || X86_64
config X86_CMPXCHG64
def_bool y
- depends on X86_PAE || X86_64
+ depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
# this should be set for all -march=.. options where the compiler
# generates cmov.
config X86_CMOV
def_bool y
- depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || X86_64)
+ depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
config X86_MINIMUM_CPU_FAMILY
int
default "64" if X86_64
default "6" if X86_32 && X86_P6_NOP
+ default "5" if X86_32 && X86_CMPXCHG64
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 !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
+ depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386) && !UML
menuconfig PROCESSOR_SELECT
bool "Supported processor vendors" if EMBEDDED
- help
+ ---help---
This lets you choose what x86 vendor support code your kernel
will include.
config CPU_SUP_INTEL
default y
bool "Support Intel processors" if PROCESSOR_SELECT
- help
+ ---help---
This enables detection, tunings and quirks for Intel processors
You need this enabled if you want your kernel to run on an
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on !64BIT
- help
+ ---help---
This enables detection, tunings and quirks for Cyrix processors
You need this enabled if you want your kernel to run on a
config CPU_SUP_AMD
default y
bool "Support AMD processors" if PROCESSOR_SELECT
- help
+ ---help---
This enables detection, tunings and quirks for AMD processors
You need this enabled if you want your kernel to run on an
If unsure, say N.
-config CPU_SUP_CENTAUR_32
+config CPU_SUP_CENTAUR
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
- depends on !64BIT
- help
- This enables detection, tunings and quirks for Centaur processors
-
- You need this enabled if you want your kernel to run on a
- Centaur CPU. Disabling this option on other types of CPUs
- makes the kernel a tiny bit smaller. Disabling it on a Centaur
- CPU might render the kernel unbootable.
-
- If unsure, say N.
-
-config CPU_SUP_CENTAUR_64
- default y
- bool "Support Centaur processors" if PROCESSOR_SELECT
- depends on 64BIT
- help
+ ---help---
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
- help
+ ---help---
This enables detection, tunings and quirks for Transmeta processors
You need this enabled if you want your kernel to run on a
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on !64BIT
- help
+ ---help---
This enables detection, tunings and quirks for UMC processors
You need this enabled if you want your kernel to run on a
CPU might render the kernel unbootable.
If unsure, say N.
-
-config X86_DS
- bool "Debug Store support"
- default y
- help
- Add support for Debug Store.
- This allows the kernel to provide a memory buffer to the hardware
- to store various profiling and tracing events.
-
-config X86_PTRACE_BTS
- bool "ptrace interface to Branch Trace Store"
- default y
- depends on (X86_DS && X86_DEBUGCTLMSR)
- help
- Add a ptrace interface to allow collecting an execution trace
- of the traced task.
- This collects control flow changes in a (cyclic) buffer and allows
- debuggers to fill in the gaps and show an execution trace of the debuggee.
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff