- "Crusoe" for the Transmeta Crusoe series.
- "Efficeon" for the Transmeta Efficeon series.
- "Winchip-C6" for original IDT Winchip.
- - "Winchip-2" for IDT Winchip 2.
- - "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
+ - "Winchip-2" for IDT Winchips with 3dNow! capabilities.
- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
- "Geode GX/LX" For AMD Geode GX and LX processors.
- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
treat this chip as a 586TSC with some extended instructions
and alignment requirements.
-config MWINCHIP2
- bool "Winchip-2"
- depends on X86_32
- help
- Select this for an IDT Winchip-2. Linux and GCC
- treat this chip as a 586TSC with some extended instructions
- and alignment requirements.
-
config MWINCHIP3D
- bool "Winchip-2A/Winchip-3"
+ bool "Winchip-2/Winchip-2A/Winchip-3"
depends on X86_32
help
- Select this for an IDT Winchip-2A or 3. Linux and GCC
+ 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
stores for this CPU, which can increase performance of some
int
default "7" if MPENTIUM4 || X86_GENERIC || GENERIC_CPU || MPSC
default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
- default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
+ 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
config X86_ALIGNMENT_16
def_bool y
- depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
config X86_INTEL_USERCOPY
def_bool y
config X86_USE_PPRO_CHECKSUM
def_bool y
- depends on MWINCHIP3D || MWINCHIP2 || 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
config X86_USE_3DNOW
def_bool y
config X86_OOSTORE
def_bool y
- depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
+ depends on (MWINCHIP3D || MWINCHIPC6) && MTRR
#
# P6_NOPs are a relatively minor optimization that require a family >=
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
+ 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
config X86_CMPXCHG64
def_bool y
# 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)
config X86_MINIMUM_CPU_FAMILY
int
config X86_DEBUGCTLMSR
def_bool y
- depends on !(MK6 || MWINCHIPC6 || MWINCHIP2 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
+ depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486 || M386)
menuconfig PROCESSOR_SELECT
- default y
bool "Supported processor vendors" if EMBEDDED
help
This lets you choose what x86 vendor support code your kernel
default y
bool "Support Intel processors" if PROCESSOR_SELECT
help
- This enables extended support for Intel processors
+ This enables detection, tunings and quirks for Intel processors
+
+ You need this enabled if you want your kernel to run on an
+ Intel CPU. Disabling this option on other types of CPUs
+ makes the kernel a tiny bit smaller. Disabling it on an Intel
+ CPU might render the kernel unbootable.
+
+ If unsure, say N.
config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on !64BIT
help
- This enables extended support for Cyrix processors
+ This enables detection, tunings and quirks for Cyrix processors
+
+ You need this enabled if you want your kernel to run on a
+ Cyrix CPU. Disabling this option on other types of CPUs
+ makes the kernel a tiny bit smaller. Disabling it on a Cyrix
+ CPU might render the kernel unbootable.
+
+ If unsure, say N.
config CPU_SUP_AMD
default y
bool "Support AMD processors" if PROCESSOR_SELECT
help
- This enables extended support for AMD processors
+ This enables detection, tunings and quirks for AMD processors
+
+ You need this enabled if you want your kernel to run on an
+ AMD CPU. Disabling this option on other types of CPUs
+ makes the kernel a tiny bit smaller. Disabling it on an AMD
+ CPU might render the kernel unbootable.
+
+ If unsure, say N.
config CPU_SUP_CENTAUR_32
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
depends on !64BIT
help
- This enables extended support for Centaur processors
+ 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
- This enables extended support for Centaur processors
+ 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_TRANSMETA_32
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
help
- This enables extended support for Transmeta processors
+ This enables detection, tunings and quirks for Transmeta processors
+
+ You need this enabled if you want your kernel to run on a
+ Transmeta CPU. Disabling this option on other types of CPUs
+ makes the kernel a tiny bit smaller. Disabling it on a Transmeta
+ CPU might render the kernel unbootable.
+
+ If unsure, say N.
config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on !64BIT
help
- This enables extended support for UMC processors
+ This enables detection, tunings and quirks for UMC processors
+
+ You need this enabled if you want your kernel to run on a
+ UMC CPU. Disabling this option on other types of CPUs
+ makes the kernel a tiny bit smaller. Disabling it on a UMC
+ 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.
+ def_bool X86_PTRACE_BTS
+ depends on X86_DEBUGCTLMSR
config X86_PTRACE_BTS
- bool "ptrace interface to Branch Trace Store"
+ bool "Branch Trace Store"
default y
- depends on (X86_DS && X86_DEBUGCTLMSR)
+ depends on 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.
+ This adds a ptrace interface to the hardware's branch trace store.
+
+ Debuggers may use it to collect an execution trace of the debugged
+ application in order to answer the question 'how did I get here?'.
+ Debuggers may trace user mode as well as kernel mode.
+
+ Say Y unless there is no application development on this machine
+ and you want to save a small amount of code size.