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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86

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* git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86:
  x86: enable "make ARCH=x86"
  x86: do not use $(ARCH) when not needed
  kconfig: use $K64BIT to set 64BIT with all*config targets
  kconfig: add helper to set config symbol from environment variable
  kconfig: factor out code in confdata.c
  x86: move the rest of the menu's to Kconfig
  x86: move all simple arch settings to Kconfig
  x86: copy x86_64 specific Kconfig symbols to Kconfig.i386
  x86: add X86_64 dependency to x86_64 specific symbols in Kconfig.x86_64
  x86: add X86_32 dependency to i386 specific symbols in Kconfig.i386
  x86: arch/x86/Kconfig.cpu unification
  x86: start unification of arch/x86/Kconfig.*
  x86: unification of cfufreq/Kconfig
This commit is contained in:
Linus Torvalds 2007-11-14 18:53:11 -08:00
commit a052f44736
19 changed files with 682 additions and 1233 deletions
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13
Makefile
View file

@ -197,8 +197,15 @@ CROSS_COMPILE ?=
UTS_MACHINE := $(ARCH)
SRCARCH := $(ARCH)
# for i386 and x86_64 we use SRCARCH equal to x86
SRCARCH := $(if $(filter x86_64 i386,$(SRCARCH)),x86,$(SRCARCH))
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
SRCARCH := x86
K64BIT := n
endif
ifeq ($(ARCH),x86_64)
SRCARCH := x86
K64BIT := y
endif
KCONFIG_CONFIG ?= .config
@ -334,7 +341,7 @@ KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export ARCH SRCARCH K64BIT CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS

2
README
View file

@ -194,6 +194,8 @@ CONFIGURING the kernel:
"make *config" checks for a file named "all{yes/mod/no/random}.config"
for symbol values that are to be forced. If this file is not found,
it checks for a file named "all.config" to contain forced values.
Finally it checks the environment variable K64BIT and if found, sets
the config symbol "64BIT" to the value of the K64BIT variable.
NOTES on "make config":
- having unnecessary drivers will make the kernel bigger, and can

563
arch/x86/Kconfig.i386 → arch/x86/Kconfig
View file

@ -1,18 +1,24 @@
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
# x86 configuration
mainmenu "Linux Kernel Configuration for x86"
mainmenu "Linux Kernel Configuration"
# Select 32 or 64 bit
config 64BIT
bool "64-bit kernel"
default n
help
Say yes to build a 64-bit kernel - formerly known as x86_64
Say no to build a 32-bit kernel - formerly known as i386
config X86_32
def_bool !64BIT
config X86_64
def_bool 64BIT
### Arch settings
config X86
bool
default y
help
This is Linux's home port. Linux was originally native to the Intel
386, and runs on all the later x86 processors including the Intel
486, 586, Pentiums, and various instruction-set-compatible chips by
AMD, Cyrix, and others.
config GENERIC_TIME
bool
@ -33,7 +39,7 @@ config GENERIC_CLOCKEVENTS
config GENERIC_CLOCKEVENTS_BROADCAST
bool
default y
depends on X86_LOCAL_APIC
depends on X86_64 || (X86_32 && X86_LOCAL_APIC)
config LOCKDEP_SUPPORT
bool
@ -47,10 +53,6 @@ config SEMAPHORE_SLEEPERS
bool
default y
config X86
bool
default y
config MMU
bool
default y
@ -61,7 +63,7 @@ config ZONE_DMA
config QUICKLIST
bool
default y
default X86_32
config SBUS
bool
@ -91,6 +93,76 @@ config DMI
bool
default y
config RWSEM_GENERIC_SPINLOCK
def_bool !X86_XADD
config RWSEM_XCHGADD_ALGORITHM
def_bool X86_XADD
config ARCH_HAS_ILOG2_U32
def_bool n
config ARCH_HAS_ILOG2_U64
def_bool n
config GENERIC_CALIBRATE_DELAY
def_bool y
config GENERIC_TIME_VSYSCALL
bool
default X86_64
config ZONE_DMA32
bool
default X86_64
config ARCH_POPULATES_NODE_MAP
def_bool y
config AUDIT_ARCH
bool
default X86_64
# Use the generic interrupt handling code in kernel/irq/:
config GENERIC_HARDIRQS
bool
default y
config GENERIC_IRQ_PROBE
bool
default y
config GENERIC_PENDING_IRQ
bool
depends on GENERIC_HARDIRQS && SMP
default y
config X86_SMP
bool
depends on X86_32 && SMP && !X86_VOYAGER
default y
config X86_HT
bool
depends on SMP && !(X86_VISWS || X86_VOYAGER || MK8)
default y
config X86_BIOS_REBOOT
bool
depends on X86_32 && !(X86_VISWS || X86_VOYAGER)
default y
config X86_TRAMPOLINE
bool
depends on X86_SMP || (X86_VOYAGER && SMP)
default y
config KTIME_SCALAR
def_bool X86_32
source "init/Kconfig"
menu "Processor type and features"
@ -137,6 +209,7 @@ config X86_PC
config X86_ELAN
bool "AMD Elan"
depends on X86_32
help
Select this for an AMD Elan processor.
@ -146,6 +219,7 @@ config X86_ELAN
config X86_VOYAGER
bool "Voyager (NCR)"
depends on X86_32
select SMP if !BROKEN
help
Voyager is an MCA-based 32-way capable SMP architecture proprietary
@ -160,6 +234,7 @@ config X86_NUMAQ
bool "NUMAQ (IBM/Sequent)"
select SMP
select NUMA
depends on X86_32
help
This option is used for getting Linux to run on a (IBM/Sequent) NUMA
multiquad box. This changes the way that processors are bootstrapped,
@ -169,7 +244,7 @@ config X86_NUMAQ
config X86_SUMMIT
bool "Summit/EXA (IBM x440)"
depends on SMP
depends on X86_32 && SMP
help
This option is needed for IBM systems that use the Summit/EXA chipset.
In particular, it is needed for the x440.
@ -179,7 +254,7 @@ config X86_SUMMIT
config X86_BIGSMP
bool "Support for other sub-arch SMP systems with more than 8 CPUs"
depends on SMP
depends on X86_32 && SMP
help
This option is needed for the systems that have more than 8 CPUs
and if the system is not of any sub-arch type above.
@ -188,6 +263,7 @@ config X86_BIGSMP
config X86_VISWS
bool "SGI 320/540 (Visual Workstation)"
depends on X86_32
help
The SGI Visual Workstation series is an IA32-based workstation
based on SGI systems chips with some legacy PC hardware attached.
@ -199,6 +275,7 @@ config X86_VISWS
config X86_GENERICARCH
bool "Generic architecture (Summit, bigsmp, ES7000, default)"
depends on X86_32
help
This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
It is intended for a generic binary kernel.
@ -206,18 +283,27 @@ config X86_GENERICARCH
config X86_ES7000
bool "Support for Unisys ES7000 IA32 series"
depends on SMP
depends on X86_32 && SMP
help
Support for Unisys ES7000 systems. Say 'Y' here if this kernel is
supposed to run on an IA32-based Unisys ES7000 system.
Only choose this option if you have such a system, otherwise you
should say N here.
config X86_VSMP
bool "Support for ScaleMP vSMP"
depends on X86_64 && PCI
help
Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
supposed to run on these EM64T-based machines. Only choose this option
if you have one of these machines.
endchoice
config SCHED_NO_NO_OMIT_FRAME_POINTER
bool "Single-depth WCHAN output"
default y
depends on X86_32
help
Calculate simpler /proc/<PID>/wchan values. If this option
is disabled then wchan values will recurse back to the
@ -228,7 +314,7 @@ config SCHED_NO_NO_OMIT_FRAME_POINTER
config PARAVIRT
bool
depends on !(X86_VISWS || X86_VOYAGER)
depends on X86_32 && !(X86_VISWS || X86_VOYAGER)
help
This changes the kernel so it can modify itself when it is run
under a hypervisor, potentially improving performance significantly
@ -237,6 +323,7 @@ config PARAVIRT
menuconfig PARAVIRT_GUEST
bool "Paravirtualized guest support"
depends on X86_32
help
Say Y here to get to see options related to running Linux under
various hypervisors. This option alone does not add any kernel code.
@ -264,7 +351,7 @@ endif
config ACPI_SRAT
bool
default y
depends on ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH)
depends on X86_32 && ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH)
select ACPI_NUMA
config HAVE_ARCH_PARSE_SRAT
@ -275,12 +362,12 @@ config HAVE_ARCH_PARSE_SRAT
config X86_SUMMIT_NUMA
bool
default y
depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
depends on X86_32 && NUMA && (X86_SUMMIT || X86_GENERICARCH)
config X86_CYCLONE_TIMER
bool
default y
depends on X86_SUMMIT || X86_GENERICARCH
depends on X86_32 && X86_SUMMIT || X86_GENERICARCH
config ES7000_CLUSTERED_APIC
bool
@ -290,21 +377,89 @@ config ES7000_CLUSTERED_APIC
source "arch/x86/Kconfig.cpu"
config HPET_TIMER
bool "HPET Timer Support"
bool
prompt "HPET Timer Support" if X86_32
default X86_64
help
This enables the use of the HPET for the kernel's internal timer.
HPET is the next generation timer replacing legacy 8254s.
You can safely choose Y here. However, HPET will only be
activated if the platform and the BIOS support this feature.
Otherwise the 8254 will be used for timing services.
Use the IA-PC HPET (High Precision Event Timer) to manage
time in preference to the PIT and RTC, if a HPET is
present.
HPET is the next generation timer replacing legacy 8254s.
The HPET provides a stable time base on SMP
systems, unlike the TSC, but it is more expensive to access,
as it is off-chip. You can find the HPET spec at
<http://www.intel.com/hardwaredesign/hpetspec.htm>.
Choose N to continue using the legacy 8254 timer.
You can safely choose Y here. However, HPET will only be
activated if the platform and the BIOS support this feature.
Otherwise the 8254 will be used for timing services.
Choose N to continue using the legacy 8254 timer.
config HPET_EMULATE_RTC
bool
depends on HPET_TIMER && RTC=y
default y
# Mark as embedded because too many people got it wrong.
# The code disables itself when not needed.
config GART_IOMMU
bool "GART IOMMU support" if EMBEDDED
default y
select SWIOTLB
select AGP
depends on X86_64 && PCI
help
Support for full DMA access of devices with 32bit memory access only
on systems with more than 3GB. This is usually needed for USB,
sound, many IDE/SATA chipsets and some other devices.
Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
based hardware IOMMU and a software bounce buffer based IOMMU used
on Intel systems and as fallback.
The code is only active when needed (enough memory and limited
device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
too.
config CALGARY_IOMMU
bool "IBM Calgary IOMMU support"
select SWIOTLB
depends on X86_64 && PCI && EXPERIMENTAL
help
Support for hardware IOMMUs in IBM's xSeries x366 and x460
systems. Needed to run systems with more than 3GB of memory
properly with 32-bit PCI devices that do not support DAC
(Double Address Cycle). Calgary also supports bus level
isolation, where all DMAs pass through the IOMMU. This
prevents them from going anywhere except their intended
destination. This catches hard-to-find kernel bugs and
mis-behaving drivers and devices that do not use the DMA-API
properly to set up their DMA buffers. The IOMMU can be
turned off at boot time with the iommu=off parameter.
Normally the kernel will make the right choice by itself.
If unsure, say Y.
config CALGARY_IOMMU_ENABLED_BY_DEFAULT
bool "Should Calgary be enabled by default?"
default y
depends on CALGARY_IOMMU
help
Should Calgary be enabled by default? if you choose 'y', Calgary
will be used (if it exists). If you choose 'n', Calgary will not be
used even if it exists. If you choose 'n' and would like to use
Calgary anyway, pass 'iommu=calgary' on the kernel command line.
If unsure, say Y.
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
bool
help
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
of Intel's x86-64 CPUs). Using this PCI devices which can only
access 32-bits of memory can be used on systems with more than
3 GB of memory. If unsure, say Y.
config NR_CPUS
int "Maximum number of CPUs (2-255)"
range 2 255
@ -321,7 +476,7 @@ config NR_CPUS
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
depends on X86_HT
depends on (X86_64 && SMP) || (X86_32 && X86_HT)
help
SMT scheduler support improves the CPU scheduler's decision making
when dealing with Intel Pentium 4 chips with HyperThreading at a
@ -330,7 +485,7 @@ config SCHED_SMT
config SCHED_MC
bool "Multi-core scheduler support"
depends on X86_HT
depends on (X86_64 && SMP) || (X86_32 && X86_HT)
default y
help
Multi-core scheduler support improves the CPU scheduler's decision
@ -341,7 +496,7 @@ source "kernel/Kconfig.preempt"
config X86_UP_APIC
bool "Local APIC support on uniprocessors"
depends on !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH)
depends on X86_32 && !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH)
help
A local APIC (Advanced Programmable Interrupt Controller) is an
integrated interrupt controller in the CPU. If you have a single-CPU
@ -366,17 +521,17 @@ config X86_UP_IOAPIC
config X86_LOCAL_APIC
bool
depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH
depends on X86_64 || (X86_32 && (X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH))
default y
config X86_IO_APIC
bool
depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH
depends on X86_64 || (X86_32 && (X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH))
default y
config X86_VISWS_APIC
bool
depends on X86_VISWS
depends on X86_32 && X86_VISWS
default y
config X86_MCE
@ -396,9 +551,25 @@ config X86_MCE
to disable it. MCE support simply ignores non-MCE processors like
the 386 and 486, so nearly everyone can say Y here.
config X86_MCE_INTEL
bool "Intel MCE features"
depends on X86_64 && X86_MCE && X86_LOCAL_APIC
default y
help
Additional support for intel specific MCE features such as
the thermal monitor.
config X86_MCE_AMD
bool "AMD MCE features"
depends on X86_64 && X86_MCE && X86_LOCAL_APIC
default y
help
Additional support for AMD specific MCE features such as
the DRAM Error Threshold.
config X86_MCE_NONFATAL
tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4"
depends on X86_MCE
depends on X86_32 && X86_MCE
help
Enabling this feature starts a timer that triggers every 5 seconds which
will look at the machine check registers to see if anything happened.
@ -411,14 +582,15 @@ config X86_MCE_NONFATAL
config X86_MCE_P4THERMAL
bool "check for P4 thermal throttling interrupt."
depends on X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS
depends on X86_32 && X86_MCE && (X86_UP_APIC || SMP) && !X86_VISWS
help
Enabling this feature will cause a message to be printed when the P4
enters thermal throttling.
config VM86
default y
bool "Enable VM86 support" if EMBEDDED
default y
depends on X86_32
help
This option is required by programs like DOSEMU to run 16-bit legacy
code on X86 processors. It also may be needed by software like
@ -427,6 +599,7 @@ config VM86
config TOSHIBA
tristate "Toshiba Laptop support"
depends on X86_32
---help---
This adds a driver to safely access the System Management Mode of
the CPU on Toshiba portables with a genuine Toshiba BIOS. It does
@ -442,6 +615,7 @@ config TOSHIBA
config I8K
tristate "Dell laptop support"
depends on X86_32
---help---
This adds a driver to safely access the System Management Mode
of the CPU on the Dell Inspiron 8000. The System Management Mode
@ -462,7 +636,7 @@ config I8K
config X86_REBOOTFIXUPS
bool "Enable X86 board specific fixups for reboot"
depends on X86
depends on X86_32 && X86
default n
---help---
This enables chipset and/or board specific fixups to be done
@ -517,12 +691,11 @@ config X86_CPUID
with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
/dev/cpu/31/cpuid.
source "drivers/firmware/Kconfig"
choice
prompt "High Memory Support"
default HIGHMEM4G if !X86_NUMAQ
default HIGHMEM64G if X86_NUMAQ
depends on X86_32
config NOHIGHMEM
bool "off"
@ -582,6 +755,7 @@ choice
depends on EXPERIMENTAL
prompt "Memory split" if EMBEDDED
default VMSPLIT_3G
depends on X86_32
help
Select the desired split between kernel and user memory.
@ -619,16 +793,17 @@ config PAGE_OFFSET
default 0x78000000 if VMSPLIT_2G_OPT
default 0x40000000 if VMSPLIT_1G
default 0xC0000000
depends on X86_32
config HIGHMEM
bool
depends on HIGHMEM64G || HIGHMEM4G
depends on X86_32 && (HIGHMEM64G || HIGHMEM4G)
default y
config X86_PAE
bool "PAE (Physical Address Extension) Support"
default n
depends on !HIGHMEM4G
depends on X86_32 && !HIGHMEM4G
select RESOURCES_64BIT
help
PAE is required for NX support, and furthermore enables
@ -639,46 +814,82 @@ config X86_PAE
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
depends on SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL
depends on SMP
depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL)
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT)
help
NUMA support for i386. This is currently highly experimental
and should be only used for kernel development. It might also
cause boot failures.
Enable NUMA (Non Uniform Memory Access) support.
The kernel will try to allocate memory used by a CPU on the
local memory controller of the CPU and add some more
NUMA awareness to the kernel.
For i386 this is currently highly experimental and should be only
used for kernel development. It might also cause boot failures.
For x86_64 this is recommended on all multiprocessor Opteron systems.
If the system is EM64T, you should say N unless your system is
EM64T NUMA.
comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
depends on X86_32 && X86_SUMMIT && (!HIGHMEM64G || !ACPI)
config K8_NUMA
bool "Old style AMD Opteron NUMA detection"
depends on X86_64 && NUMA && PCI
default y
help
Enable K8 NUMA node topology detection. You should say Y here if
you have a multi processor AMD K8 system. This uses an old
method to read the NUMA configuration directly from the builtin
Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
instead, which also takes priority if both are compiled in.
config X86_64_ACPI_NUMA
bool "ACPI NUMA detection"
depends on X86_64 && NUMA && ACPI && PCI
select ACPI_NUMA
default y
help
Enable ACPI SRAT based node topology detection.
config NUMA_EMU
bool "NUMA emulation"
depends on X86_64 && NUMA
help
Enable NUMA emulation. A flat machine will be split
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
config NODES_SHIFT
int
default "6" if X86_64
default "4" if X86_NUMAQ
default "3"
depends on NEED_MULTIPLE_NODES
config HAVE_ARCH_BOOTMEM_NODE
bool
depends on NUMA
depends on X86_32 && NUMA
default y
config ARCH_HAVE_MEMORY_PRESENT
bool
depends on DISCONTIGMEM
depends on X86_32 && DISCONTIGMEM
default y
config NEED_NODE_MEMMAP_SIZE
bool
depends on DISCONTIGMEM || SPARSEMEM
depends on X86_32 && (DISCONTIGMEM || SPARSEMEM)
default y
config HAVE_ARCH_ALLOC_REMAP
bool
depends on NUMA
depends on X86_32 && NUMA
default y
config ARCH_FLATMEM_ENABLE
def_bool y
depends on (ARCH_SELECT_MEMORY_MODEL && X86_PC)
depends on (X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC) || (X86_64 && !NUMA)
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
@ -690,21 +901,23 @@ config ARCH_DISCONTIGMEM_DEFAULT
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on (NUMA || (X86_PC && EXPERIMENTAL))
select SPARSEMEM_STATIC
depends on NUMA || (EXPERIMENTAL && (X86_PC || X86_64))
select SPARSEMEM_STATIC if X86_32
select SPARSEMEM_VMEMMAP_ENABLE if X86_64
config ARCH_SELECT_MEMORY_MODEL
def_bool y
depends on ARCH_SPARSEMEM_ENABLE
depends on X86_32 && ARCH_SPARSEMEM_ENABLE
config ARCH_POPULATES_NODE_MAP
def_bool y
config ARCH_MEMORY_PROBE
def_bool X86_64
depends on MEMORY_HOTPLUG
source "mm/Kconfig"
config HIGHPTE
bool "Allocate 3rd-level pagetables from highmem"
depends on HIGHMEM4G || HIGHMEM64G
depends on X86_32 && (HIGHMEM4G || HIGHMEM64G)
help
The VM uses one page table entry for each page of physical memory.
For systems with a lot of RAM, this can be wasteful of precious
@ -712,7 +925,8 @@ config HIGHPTE
entries in high memory.
config MATH_EMULATION
bool "Math emulation"
bool
prompt "Math emulation" if X86_32
---help---
Linux can emulate a math coprocessor (used for floating point
operations) if you don't have one. 486DX and Pentium processors have
@ -772,7 +986,7 @@ config MTRR
config EFI
bool "Boot from EFI support"
depends on ACPI
depends on X86_32 && ACPI
default n
---help---
This enables the kernel to boot on EFI platforms using
@ -789,18 +1003,18 @@ config EFI
kernel should continue to boot on existing non-EFI platforms.
config IRQBALANCE
bool "Enable kernel irq balancing"
depends on SMP && X86_IO_APIC
bool "Enable kernel irq balancing"
depends on X86_32 && SMP && X86_IO_APIC
default y
help
The default yes will allow the kernel to do irq load balancing.
The default yes will allow the kernel to do irq load balancing.
Saying no will keep the kernel from doing irq load balancing.
# turning this on wastes a bunch of space.
# Summit needs it only when NUMA is on
config BOOT_IOREMAP
bool
depends on (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
depends on X86_32 && (((X86_SUMMIT || X86_GENERICARCH) && NUMA) || (X86 && EFI))
default y
config SECCOMP
@ -820,6 +1034,30 @@ config SECCOMP
If unsure, say Y. Only embedded should say N here.
config CC_STACKPROTECTOR
bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
depends on X86_64 && EXPERIMENTAL
help
This option turns on the -fstack-protector GCC feature. This
feature puts, at the beginning of critical functions, a canary
value on the stack just before the return address, and validates
the value just before actually returning. Stack based buffer
overflows (that need to overwrite this return address) now also
overwrite the canary, which gets detected and the attack is then
neutralized via a kernel panic.
This feature requires gcc version 4.2 or above, or a distribution
gcc with the feature backported. Older versions are automatically
detected and for those versions, this configuration option is ignored.
config CC_STACKPROTECTOR_ALL
bool "Use stack-protector for all functions"
depends on CC_STACKPROTECTOR
help
Normally, GCC only inserts the canary value protection for
functions that use large-ish on-stack buffers. By enabling
this option, GCC will be asked to do this for ALL functions.
source kernel/Kconfig.hz
config KEXEC
@ -841,7 +1079,7 @@ config KEXEC
config CRASH_DUMP
bool "kernel crash dumps (EXPERIMENTAL)"
depends on EXPERIMENTAL
depends on HIGHMEM
depends on X86_64 || (X86_32 && HIGHMEM)
help
Generate crash dump after being started by kexec.
This should be normally only set in special crash dump kernels
@ -856,6 +1094,7 @@ config CRASH_DUMP
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
default "0x1000000" if X86_NUMAQ
default "0x200000" if X86_64
default "0x100000"
help
This gives the physical address where the kernel is loaded.
@ -908,25 +1147,31 @@ config RELOCATABLE
must live at a different physical address than the primary
kernel.
Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
it has been loaded at and the compile time physical address
(CONFIG_PHYSICAL_START) is ignored.
config PHYSICAL_ALIGN
hex "Alignment value to which kernel should be aligned"
default "0x100000"
hex
prompt "Alignment value to which kernel should be aligned" if X86_32
default "0x100000" if X86_32
default "0x200000" if X86_64
range 0x2000 0x400000
help
This value puts the alignment restrictions on physical address
where kernel is loaded and run from. Kernel is compiled for an
address which meets above alignment restriction.
where kernel is loaded and run from. Kernel is compiled for an
address which meets above alignment restriction.
If bootloader loads the kernel at a non-aligned address and
CONFIG_RELOCATABLE is set, kernel will move itself to nearest
address aligned to above value and run from there.
If bootloader loads the kernel at a non-aligned address and
CONFIG_RELOCATABLE is set, kernel will move itself to nearest
address aligned to above value and run from there.
If bootloader loads the kernel at a non-aligned address and
CONFIG_RELOCATABLE is not set, kernel will ignore the run time
load address and decompress itself to the address it has been
compiled for and run from there. The address for which kernel is
compiled already meets above alignment restrictions. Hence the
end result is that kernel runs from a physical address meeting
If bootloader loads the kernel at a non-aligned address and
CONFIG_RELOCATABLE is not set, kernel will ignore the run time
load address and decompress itself to the address it has been
compiled for and run from there. The address for which kernel is
compiled already meets above alignment restrictions. Hence the
end result is that kernel runs from a physical address meeting
above alignment restrictions.
Don't change this unless you know what you are doing.
@ -938,10 +1183,13 @@ config HOTPLUG_CPU
Say Y here to experiment with turning CPUs off and on, and to
enable suspend on SMP systems. CPUs can be controlled through
/sys/devices/system/cpu.
Say N if you want to disable CPU hotplug and don't need to
suspend.
config COMPAT_VDSO
bool "Compat VDSO support"
default y
depends on X86_32
help
Map the VDSO to the predictable old-style address too.
---help---
@ -955,18 +1203,35 @@ endmenu
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y
depends on HIGHMEM
depends on X86_64 || (X86_32 && HIGHMEM)
menu "Power management options (ACPI, APM)"
config MEMORY_HOTPLUG_RESERVE
def_bool X86_64
depends on (MEMORY_HOTPLUG && DISCONTIGMEM)
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool X86_64
depends on NUMA
config OUT_OF_LINE_PFN_TO_PAGE
def_bool X86_64
depends on DISCONTIGMEM
menu "Power management options"
depends on !X86_VOYAGER
source kernel/power/Kconfig
config ARCH_HIBERNATION_HEADER
bool
depends on X86_64 && HIBERNATION
default y
source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"
menuconfig APM
tristate "APM (Advanced Power Management) BIOS support"
depends on PM_SLEEP && !X86_VISWS
depends on X86_32 && PM_SLEEP && !X86_VISWS
---help---
APM is a BIOS specification for saving power using several different
techniques. This is mostly useful for battery powered laptops with
@ -1092,13 +1357,14 @@ config APM_REAL_MODE_POWER_OFF
endif # APM
source "arch/x86/kernel/cpu/cpufreq/Kconfig_32"
source "arch/x86/kernel/cpu/cpufreq/Kconfig"
source "drivers/cpuidle/Kconfig"
endmenu
menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
menu "Bus options (PCI etc.)"
config PCI
bool "PCI support" if !X86_VISWS
@ -1118,7 +1384,7 @@ config PCI
choice
prompt "PCI access mode"
depends on PCI && !X86_VISWS
depends on X86_32 && PCI && !X86_VISWS
default PCI_GOANY
---help---
On PCI systems, the BIOS can be used to detect the PCI devices and
@ -1151,17 +1417,18 @@ endchoice
config PCI_BIOS
bool
depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
depends on X86_32 && !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
default y
# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
config PCI_DIRECT
bool
depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
default y
config PCI_MMCONFIG
bool
depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
default y
config PCI_DOMAINS
@ -1169,14 +1436,52 @@ config PCI_DOMAINS
depends on PCI
default y
config PCI_MMCONFIG
bool "Support mmconfig PCI config space access"
depends on X86_64 && PCI && ACPI
config DMAR
bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
depends on X86_64 && PCI_MSI && ACPI && EXPERIMENTAL
help
DMA remapping (DMAR) devices support enables independent address
translations for Direct Memory Access (DMA) from devices.
These DMA remapping devices are reported via ACPI tables
and include PCI device scope covered by these DMA
remapping devices.
config DMAR_GFX_WA
bool "Support for Graphics workaround"
depends on DMAR
default y
help
Current Graphics drivers tend to use physical address
for DMA and avoid using DMA APIs. Setting this config
option permits the IOMMU driver to set a unity map for
all the OS-visible memory. Hence the driver can continue
to use physical addresses for DMA.
config DMAR_FLOPPY_WA
bool
depends on DMAR
default y
help
Floppy disk drivers are know to bypass DMA API calls
thereby failing to work when IOMMU is enabled. This
workaround will setup a 1:1 mapping for the first
16M to make floppy (an ISA device) work.
source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
# x86_64 have no ISA slots, but do have ISA-style DMA.
config ISA_DMA_API
bool
default y
if X86_32
config ISA
bool "ISA support"
depends on !(X86_VOYAGER || X86_VISWS)
@ -1248,9 +1553,11 @@ config GEODE_MFGPT_TIMER
MFGPTs have a better resolution and max interval than the
generic PIT, and are suitable for use as high-res timers.
endif # X86_32
config K8_NB
def_bool y
depends on AGP_AMD64
depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
source "drivers/pcmcia/Kconfig"
@ -1258,16 +1565,48 @@ source "drivers/pci/hotplug/Kconfig"
endmenu
menu "Executable file formats"
menu "Executable file formats / Emulations"
source "fs/Kconfig.binfmt"
config IA32_EMULATION
bool "IA32 Emulation"
depends on X86_64
help
Include code to run 32-bit programs under a 64-bit kernel. You should
likely turn this on, unless you're 100% sure that you don't have any
32-bit programs left.
config IA32_AOUT
tristate "IA32 a.out support"
depends on IA32_EMULATION
help
Support old a.out binaries in the 32bit emulation.
config COMPAT
bool
depends on IA32_EMULATION
default y
config COMPAT_FOR_U64_ALIGNMENT
def_bool COMPAT
depends on X86_64
config SYSVIPC_COMPAT
bool
depends on X86_64 && COMPAT && SYSVIPC
default y
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "drivers/firmware/Kconfig"
source "fs/Kconfig"
source "kernel/Kconfig.instrumentation"
@ -1279,43 +1618,3 @@ source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
#
# Use the generic interrupt handling code in kernel/irq/:
#
config GENERIC_HARDIRQS
bool
default y
config GENERIC_IRQ_PROBE
bool
default y
config GENERIC_PENDING_IRQ
bool
depends on GENERIC_HARDIRQS && SMP
default y
config X86_SMP
bool
depends on SMP && !X86_VOYAGER
default y
config X86_HT
bool
depends on SMP && !(X86_VISWS || X86_VOYAGER)
default y
config X86_BIOS_REBOOT
bool
depends on !(X86_VISWS || X86_VOYAGER)
default y
config X86_TRAMPOLINE
bool
depends on X86_SMP || (X86_VOYAGER && SMP)
default y
config KTIME_SCALAR
bool
default y

121
arch/x86/Kconfig.cpu
View file

@ -3,11 +3,12 @@ if !X86_ELAN
choice
prompt "Processor family"
default M686
default M686 if X86_32
default GENERIC_CPU if X86_64
config M386
bool "386"
depends on !UML
depends on X86_32 && !UML
---help---
This is the processor type of your CPU. This information is used for
optimizing purposes. In order to compile a kernel that can run on
@ -49,6 +50,7 @@ config M386
config M486
bool "486"
depends on X86_32
help
Select this for a 486 series processor, either Intel or one of the
compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
@ -57,6 +59,7 @@ config M486
config M586
bool "586/K5/5x86/6x86/6x86MX"
depends on X86_32
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
@ -64,18 +67,21 @@ config M586
config M586TSC
bool "Pentium-Classic"
depends on X86_32
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
Select this for a Pentium with the MMX graphics/multimedia
extended instructions.
config M686
bool "Pentium-Pro"
depends on X86_32
help
Select this for Intel Pentium Pro chips. This enables the use of
Pentium Pro extended instructions, and disables the init-time guard
@ -83,6 +89,7 @@ config M686
config MPENTIUMII
bool "Pentium-II/Celeron(pre-Coppermine)"
depends on X86_32
help
Select this for Intel chips based on the Pentium-II and
pre-Coppermine Celeron core. This option enables an unaligned
@ -92,6 +99,7 @@ config MPENTIUMII
config MPENTIUMIII
bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
depends on X86_32
help
Select this for Intel chips based on the Pentium-III and
Celeron-Coppermine core. This option enables use of some
@ -100,19 +108,14 @@ config MPENTIUMIII
config MPENTIUMM
bool "Pentium M"
depends on X86_32
help
Select this for Intel Pentium M (not Pentium-4 M)
notebook chips.
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)
config MPENTIUM4
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
depends on X86_32
help
Select this for Intel Pentium 4 chips. This includes the
Pentium 4, Pentium D, P4-based Celeron and Xeon, and
@ -148,6 +151,7 @@ config MPENTIUM4
config MK6
bool "K6/K6-II/K6-III"
depends on X86_32
help
Select this for an AMD K6-family processor. Enables use of
some extended instructions, and passes appropriate optimization
@ -155,6 +159,7 @@ config MK6
config MK7
bool "Athlon/Duron/K7"
depends on X86_32
help
Select this for an AMD Athlon K7-family processor. Enables use of
some extended instructions, and passes appropriate optimization
@ -169,6 +174,7 @@ config MK8
config MCRUSOE
bool "Crusoe"
depends on X86_32
help
Select this for a Transmeta Crusoe processor. Treats the processor
like a 586 with TSC, and sets some GCC optimization flags (like a
@ -176,11 +182,13 @@ config MCRUSOE
config MEFFICEON
bool "Efficeon"
depends on X86_32
help
Select this for a Transmeta Efficeon processor.
config MWINCHIPC6
bool "Winchip-C6"
depends on X86_32
help
Select this for an IDT Winchip C6 chip. Linux and GCC
treat this chip as a 586TSC with some extended instructions
@ -188,6 +196,7 @@ config MWINCHIPC6
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
@ -195,6 +204,7 @@ config MWINCHIP2
config MWINCHIP3D
bool "Winchip-2A/Winchip-3"
depends on X86_32
help
Select this for an IDT Winchip-2A or 3. Linux and GCC
treat this chip as a 586TSC with some extended instructions
@ -204,16 +214,19 @@ config MWINCHIP3D
config MGEODEGX1
bool "GeodeGX1"
depends on X86_32
help
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
depends on X86_32
help
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
depends on X86_32
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,
@ -225,6 +238,7 @@ config MCYRIXIII
config MVIAC3_2
bool "VIA C3-2 (Nehemiah)"
depends on X86_32
help
Select this for a VIA C3 "Nehemiah". Selecting this enables usage
of SSE and tells gcc to treat the CPU as a 686.
@ -232,15 +246,42 @@ config MVIAC3_2
config MVIAC7
bool "VIA C7"
depends on X86_32
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
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
using the cpu family field
in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
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)
config GENERIC_CPU
bool "Generic-x86-64"
depends on X86_64
help
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
endchoice
config X86_GENERIC
bool "Generic x86 support"
help
bool "Generic x86 support"
depends on X86_32
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
@ -253,44 +294,31 @@ endif
#
# 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
int
default "4096" if X86_VSMP
default X86_L1_CACHE_BYTES if !X86_VSMP
depends on X86_64
config X86_CMPXCHG
bool
depends on !M386
default y
def_bool X86_64 || (X86_32 && !M386)
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || X86_GENERIC
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 "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7
config X86_XADD
bool
depends on !M386
default y
config RWSEM_GENERIC_SPINLOCK
bool
depends on !X86_XADD
default y
config RWSEM_XCHGADD_ALGORITHM
bool
depends on X86_XADD
default y
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
config GENERIC_CALIBRATE_DELAY
bool
depends on X86_32 && !M386
default y
config X86_PPRO_FENCE
@ -305,22 +333,22 @@ config X86_F00F_BUG
config X86_WP_WORKS_OK
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_INVLPG
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_BSWAP
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_POPAD_OK
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_ALIGNMENT_16
@ -330,7 +358,7 @@ config X86_ALIGNMENT_16
config X86_GOOD_APIC
bool
depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7
depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 || X86_64
default y
config X86_INTEL_USERCOPY
@ -355,7 +383,7 @@ config X86_OOSTORE
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
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
@ -367,6 +395,7 @@ config X86_CMOV
config X86_MINIMUM_CPU_FAMILY
int
default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK
default "64" if X86_64
default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK)
default "3"

839
arch/x86/Kconfig.x86_64
View file

@ -1,839 +0,0 @@
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
# Note: ISA is disabled and will hopefully never be enabled.
# If you managed to buy an ISA x86-64 box you'll have to fix all the
# ISA drivers you need yourself.
#
mainmenu "Linux Kernel Configuration"
config X86_64
bool
default y
help
Port to the x86-64 architecture. x86-64 is a 64-bit extension to the
classical 32-bit x86 architecture. For details see
<http://www.x86-64.org/>.
config 64BIT
def_bool y
config X86
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_TIME_VSYSCALL
bool
default y
config GENERIC_CMOS_UPDATE
bool
default y
config CLOCKSOURCE_WATCHDOG
bool
default y
config GENERIC_CLOCKEVENTS
bool
default y
config GENERIC_CLOCKEVENTS_BROADCAST
bool
default y
config ZONE_DMA32
bool
default y
config LOCKDEP_SUPPORT
bool
default y
config STACKTRACE_SUPPORT
bool
default y
config SEMAPHORE_SLEEPERS
bool
default y
config MMU
bool
default y
config ZONE_DMA
bool
default y
config ISA
bool
config SBUS
bool
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config X86_CMPXCHG
bool
default y
config GENERIC_ISA_DMA
bool
default y
config GENERIC_IOMAP
bool
default y
config ARCH_MAY_HAVE_PC_FDC
bool
default y
config ARCH_POPULATES_NODE_MAP
def_bool y
config DMI
bool
default y
config AUDIT_ARCH
bool
default y
config GENERIC_BUG
bool
default y
depends on BUG
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
source "init/Kconfig"
menu "Processor type and features"
source "kernel/time/Kconfig"
choice
prompt "Subarchitecture Type"
default X86_PC
config X86_PC
bool "PC-compatible"
help
Choose this option if your computer is a standard PC or compatible.
config X86_VSMP
bool "Support for ScaleMP vSMP"
depends on PCI
help
Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
supposed to run on these EM64T-based machines. Only choose this option
if you have one of these machines.
endchoice
choice
prompt "Processor family"
default GENERIC_CPU
config MK8
bool "AMD-Opteron/Athlon64"
help
Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.
config MPSC
bool "Intel P4 / older Netburst based Xeon"
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
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.
config MCORE2
bool "Intel Core2 / newer Xeon"
help
Optimize for Intel Core2 and newer Xeons (51xx)
You can distinguish the newer Xeons from the older ones using
the cpu family field in /proc/cpuinfo. 15 is an older Xeon
(use CONFIG_MPSC then), 6 is a newer one.
config GENERIC_CPU
bool "Generic-x86-64"
help
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
endchoice
#
# 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
config X86_L1_CACHE_SHIFT
int
default "7" if GENERIC_CPU || MPSC
default "6" if MK8 || MCORE2
config X86_INTERNODE_CACHE_BYTES
int
default "4096" if X86_VSMP
default X86_L1_CACHE_BYTES if !X86_VSMP
config X86_TSC
bool
default y
config X86_GOOD_APIC
bool
default y
config MICROCODE
tristate "/dev/cpu/microcode - Intel CPU microcode support"
select FW_LOADER
---help---
If you say Y here the 'File systems' section, you will be
able to update the microcode on Intel processors. You will
obviously need the actual microcode binary data itself which is
not shipped with the Linux kernel.
For latest news and information on obtaining all the required
ingredients for this driver, check:
<http://www.urbanmyth.org/microcode/>.
To compile this driver as a module, choose M here: the
module will be called microcode.
If you use modprobe or kmod you may also want to add the line
'alias char-major-10-184 microcode' to your /etc/modules.conf file.
config MICROCODE_OLD_INTERFACE
bool
depends on MICROCODE
default y
config X86_MSR
tristate "/dev/cpu/*/msr - Model-specific register support"
help
This device gives privileged processes access to the x86
Model-Specific Registers (MSRs). It is a character device with
major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
MSR accesses are directed to a specific CPU on multi-processor
systems.
config X86_CPUID
tristate "/dev/cpu/*/cpuid - CPU information support"
help
This device gives processes access to the x86 CPUID instruction to
be executed on a specific processor. It is a character device
with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
/dev/cpu/31/cpuid.
config X86_HT
bool
depends on SMP && !MK8
default y
config MATH_EMULATION
bool
config MCA
bool
config EISA
bool
config X86_IO_APIC
bool
default y
config X86_LOCAL_APIC
bool
default y
config MTRR
bool "MTRR (Memory Type Range Register) support"
---help---
On Intel P6 family processors (Pentium Pro, Pentium II and later)
the Memory Type Range Registers (MTRRs) may be used to control
processor access to memory ranges. This is most useful if you have
a video (VGA) card on a PCI or AGP bus. Enabling write-combining
allows bus write transfers to be combined into a larger transfer
before bursting over the PCI/AGP bus. This can increase performance
of image write operations 2.5 times or more. Saying Y here creates a
/proc/mtrr file which may be used to manipulate your processor's
MTRRs. Typically the X server should use this.
This code has a reasonably generic interface so that similar
control registers on other processors can be easily supported
as well.
Saying Y here also fixes a problem with buggy SMP BIOSes which only
set the MTRRs for the boot CPU and not for the secondary CPUs. This
can lead to all sorts of problems, so it's good to say Y here.
Just say Y here, all x86-64 machines support MTRRs.
See <file:Documentation/mtrr.txt> for more information.
config SMP
bool "Symmetric multi-processing support"
---help---
This enables support for systems with more than one CPU. If you have
a system with only one CPU, like most personal computers, say N. If
you have a system with more than one CPU, say Y.
If you say N here, the kernel will run on single and multiprocessor
machines, but will use only one CPU of a multiprocessor machine. If
you say Y here, the kernel will run on many, but not all,
singleprocessor machines. On a singleprocessor machine, the kernel
will run faster if you say N here.
If you don't know what to do here, say N.
config SCHED_SMT
bool "SMT (Hyperthreading) scheduler support"
depends on SMP
default n
help
SMT scheduler support improves the CPU scheduler's decision making
when dealing with Intel Pentium 4 chips with HyperThreading at a
cost of slightly increased overhead in some places. If unsure say
N here.
config SCHED_MC
bool "Multi-core scheduler support"
depends on SMP
default y
help
Multi-core scheduler support improves the CPU scheduler's decision
making when dealing with multi-core CPU chips at a cost of slightly
increased overhead in some places. If unsure say N here.
source "kernel/Kconfig.preempt"
config NUMA
bool "Non Uniform Memory Access (NUMA) Support"
depends on SMP
help
Enable NUMA (Non Uniform Memory Access) support. The kernel
will try to allocate memory used by a CPU on the local memory
controller of the CPU and add some more NUMA awareness to the kernel.
This code is recommended on all multiprocessor Opteron systems.
If the system is EM64T, you should say N unless your system is EM64T
NUMA.
config K8_NUMA
bool "Old style AMD Opteron NUMA detection"
depends on NUMA && PCI
default y
help
Enable K8 NUMA node topology detection. You should say Y here if
you have a multi processor AMD K8 system. This uses an old
method to read the NUMA configuration directly from the builtin
Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
instead, which also takes priority if both are compiled in.
config NODES_SHIFT
int
default "6"
depends on NEED_MULTIPLE_NODES
# Dummy CONFIG option to select ACPI_NUMA from drivers/acpi/Kconfig.
config X86_64_ACPI_NUMA
bool "ACPI NUMA detection"
depends on NUMA
select ACPI
select PCI
select ACPI_NUMA
default y
help
Enable ACPI SRAT based node topology detection.
config NUMA_EMU
bool "NUMA emulation"
depends on NUMA
help
Enable NUMA emulation. A flat machine will be split
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
config ARCH_DISCONTIGMEM_ENABLE
bool
depends on NUMA
default y
config ARCH_DISCONTIGMEM_DEFAULT
def_bool y
depends on NUMA
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on (NUMA || EXPERIMENTAL)
select SPARSEMEM_VMEMMAP_ENABLE
config ARCH_MEMORY_PROBE
def_bool y
depends on MEMORY_HOTPLUG
config ARCH_FLATMEM_ENABLE
def_bool y
depends on !NUMA
source "mm/Kconfig"
config MEMORY_HOTPLUG_RESERVE
def_bool y
depends on (MEMORY_HOTPLUG && DISCONTIGMEM)
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NUMA
config OUT_OF_LINE_PFN_TO_PAGE
def_bool y
depends on DISCONTIGMEM
config NR_CPUS
int "Maximum number of CPUs (2-255)"
range 2 255
depends on SMP
default "8"
help
This allows you to specify the maximum number of CPUs which this
kernel will support. Current maximum is 255 CPUs due to
APIC addressing limits. Less depending on the hardware.
This is purely to save memory - each supported CPU requires
memory in the static kernel configuration.
config PHYSICAL_ALIGN
hex
default "0x200000"
config HOTPLUG_CPU
bool "Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL)"
depends on SMP && HOTPLUG && EXPERIMENTAL
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu/cpu#.
This is also required for suspend/hibernation on SMP systems.
Say N if you want to disable CPU hotplug and don't need to
suspend.
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y
config HPET_TIMER
bool
default y
help
Use the IA-PC HPET (High Precision Event Timer) to manage
time in preference to the PIT and RTC, if a HPET is
present. The HPET provides a stable time base on SMP
systems, unlike the TSC, but it is more expensive to access,
as it is off-chip. You can find the HPET spec at
<http://www.intel.com/hardwaredesign/hpetspec.htm>.
config HPET_EMULATE_RTC
bool
depends on HPET_TIMER && RTC=y
default y
# Mark as embedded because too many people got it wrong.
# The code disables itself when not needed.
config GART_IOMMU
bool "GART IOMMU support" if EMBEDDED
default y
select SWIOTLB
select AGP
depends on PCI
help
Support for full DMA access of devices with 32bit memory access only
on systems with more than 3GB. This is usually needed for USB,
sound, many IDE/SATA chipsets and some other devices.
Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
based hardware IOMMU and a software bounce buffer based IOMMU used
on Intel systems and as fallback.
The code is only active when needed (enough memory and limited
device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
too.
config CALGARY_IOMMU
bool "IBM Calgary IOMMU support"
select SWIOTLB
depends on PCI && EXPERIMENTAL
help
Support for hardware IOMMUs in IBM's xSeries x366 and x460
systems. Needed to run systems with more than 3GB of memory
properly with 32-bit PCI devices that do not support DAC
(Double Address Cycle). Calgary also supports bus level
isolation, where all DMAs pass through the IOMMU. This
prevents them from going anywhere except their intended
destination. This catches hard-to-find kernel bugs and
mis-behaving drivers and devices that do not use the DMA-API
properly to set up their DMA buffers. The IOMMU can be
turned off at boot time with the iommu=off parameter.
Normally the kernel will make the right choice by itself.
If unsure, say Y.
config CALGARY_IOMMU_ENABLED_BY_DEFAULT
bool "Should Calgary be enabled by default?"
default y
depends on CALGARY_IOMMU
help
Should Calgary be enabled by default? if you choose 'y', Calgary
will be used (if it exists). If you choose 'n', Calgary will not be
used even if it exists. If you choose 'n' and would like to use
Calgary anyway, pass 'iommu=calgary' on the kernel command line.
If unsure, say Y.
# need this always selected by IOMMU for the VIA workaround
config SWIOTLB
bool
help
Support for software bounce buffers used on x86-64 systems
which don't have a hardware IOMMU (e.g. the current generation
of Intel's x86-64 CPUs). Using this PCI devices which can only
access 32-bits of memory can be used on systems with more than
3 GB of memory. If unsure, say Y.
config X86_MCE
bool "Machine check support" if EMBEDDED
default y
help
Include a machine check error handler to report hardware errors.
This version will require the mcelog utility to decode some
machine check error logs. See
ftp://ftp.x86-64.org/pub/linux/tools/mcelog
config X86_MCE_INTEL
bool "Intel MCE features"
depends on X86_MCE && X86_LOCAL_APIC
default y
help
Additional support for intel specific MCE features such as
the thermal monitor.
config X86_MCE_AMD
bool "AMD MCE features"
depends on X86_MCE && X86_LOCAL_APIC
default y
help
Additional support for AMD specific MCE features such as
the DRAM Error Threshold.
config KEXEC
bool "kexec system call"
help
kexec is a system call that implements the ability to shutdown your
current kernel, and to start another kernel. It is like a reboot
but it is independent of the system firmware. And like a reboot
you can start any kernel with it, not just Linux.
The name comes from the similarity to the exec system call.
It is an ongoing process to be certain the hardware in a machine
is properly shutdown, so do not be surprised if this code does not
initially work for you. It may help to enable device hotplugging
support. As of this writing the exact hardware interface is
strongly in flux, so no good recommendation can be made.
config CRASH_DUMP
bool "kernel crash dumps (EXPERIMENTAL)"
depends on EXPERIMENTAL
help
Generate crash dump after being started by kexec.
This should be normally only set in special crash dump kernels
which are loaded in the main kernel with kexec-tools into
a specially reserved region and then later executed after
a crash by kdump/kexec. The crash dump kernel must be compiled
to a memory address not used by the main kernel or BIOS using
PHYSICAL_START, or it must be built as a relocatable image
(CONFIG_RELOCATABLE=y).
For more details see Documentation/kdump/kdump.txt
config RELOCATABLE
bool "Build a relocatable kernel (EXPERIMENTAL)"
depends on EXPERIMENTAL
help
Builds a relocatable kernel. This enables loading and running
a kernel binary from a different physical address than it has
been compiled for.
One use is for the kexec on panic case where the recovery kernel
must live at a different physical address than the primary
kernel.
Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
it has been loaded at and the compile time physical address
(CONFIG_PHYSICAL_START) is ignored.
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
default "0x200000"
help
This gives the physical address where the kernel is loaded. It
should be aligned to 2MB boundary.
If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then
bzImage will decompress itself to above physical address and
run from there. Otherwise, bzImage will run from the address where
it has been loaded by the boot loader and will ignore above physical
address.
In normal kdump cases one does not have to set/change this option
as now bzImage can be compiled as a completely relocatable image
(CONFIG_RELOCATABLE=y) and be used to load and run from a different
address. This option is mainly useful for the folks who don't want
to use a bzImage for capturing the crash dump and want to use a
vmlinux instead.
So if you are using bzImage for capturing the crash dump, leave
the value here unchanged to 0x200000 and set CONFIG_RELOCATABLE=y.
Otherwise if you plan to use vmlinux for capturing the crash dump
change this value to start of the reserved region (Typically 16MB
0x1000000). In other words, it can be set based on the "X" value as
specified in the "crashkernel=YM@XM" command line boot parameter
passed to the panic-ed kernel. Typically this parameter is set as
crashkernel=64M@16M. Please take a look at
Documentation/kdump/kdump.txt for more details about crash dumps.
Usage of bzImage for capturing the crash dump is advantageous as
one does not have to build two kernels. Same kernel can be used
as production kernel and capture kernel.
Don't change this unless you know what you are doing.
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS
default y
help
This kernel feature is useful for number crunching applications
that may need to compute untrusted bytecode during their
execution. By using pipes or other transports made available to
the process as file descriptors supporting the read/write
syscalls, it's possible to isolate those applications in
their own address space using seccomp. Once seccomp is
enabled via /proc/<pid>/seccomp, it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
If unsure, say Y. Only embedded should say N here.
config CC_STACKPROTECTOR
bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
depends on EXPERIMENTAL
help
This option turns on the -fstack-protector GCC feature. This
feature puts, at the beginning of critical functions, a canary
value on the stack just before the return address, and validates
the value just before actually returning. Stack based buffer
overflows (that need to overwrite this return address) now also
overwrite the canary, which gets detected and the attack is then
neutralized via a kernel panic.
This feature requires gcc version 4.2 or above, or a distribution
gcc with the feature backported. Older versions are automatically
detected and for those versions, this configuration option is ignored.
config CC_STACKPROTECTOR_ALL
bool "Use stack-protector for all functions"
depends on CC_STACKPROTECTOR
help
Normally, GCC only inserts the canary value protection for
functions that use large-ish on-stack buffers. By enabling
this option, GCC will be asked to do this for ALL functions.
source kernel/Kconfig.hz
config K8_NB
def_bool y
depends on AGP_AMD64 || GART_IOMMU || (PCI && NUMA)
endmenu
#
# Use the generic interrupt handling code in kernel/irq/:
#
config GENERIC_HARDIRQS
bool
default y
config GENERIC_IRQ_PROBE
bool
default y
# we have no ISA slots, but we do have ISA-style DMA.
config ISA_DMA_API
bool
default y
config GENERIC_PENDING_IRQ
bool
depends on GENERIC_HARDIRQS && SMP
default y
menu "Power management options"
source kernel/power/Kconfig
config ARCH_HIBERNATION_HEADER
bool
depends on HIBERNATION
default y
source "drivers/acpi/Kconfig"
source "arch/x86/kernel/cpu/cpufreq/Kconfig_64"
source "drivers/cpuidle/Kconfig"
endmenu
menu "Bus options (PCI etc.)"
config PCI
bool "PCI support"
select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
config PCI_DIRECT
bool
depends on PCI
default y
config PCI_MMCONFIG
bool "Support mmconfig PCI config space access"
depends on PCI && ACPI
config PCI_DOMAINS
bool
depends on PCI
default y
config DMAR
bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
depends on PCI_MSI && ACPI && EXPERIMENTAL
help
DMA remapping (DMAR) devices support enables independent address
translations for Direct Memory Access (DMA) from devices.
These DMA remapping devices are reported via ACPI tables
and include PCI device scope covered by these DMA
remapping devices.
config DMAR_GFX_WA
bool "Support for Graphics workaround"
depends on DMAR
default y
help
Current Graphics drivers tend to use physical address
for DMA and avoid using DMA APIs. Setting this config
option permits the IOMMU driver to set a unity map for
all the OS-visible memory. Hence the driver can continue
to use physical addresses for DMA.
config DMAR_FLOPPY_WA
bool
depends on DMAR
default y
help
Floppy disk drivers are know to bypass DMA API calls
thereby failing to work when IOMMU is enabled. This
workaround will setup a 1:1 mapping for the first
16M to make floppy (an ISA device) work.
source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
source "drivers/pcmcia/Kconfig"
source "drivers/pci/hotplug/Kconfig"
endmenu
menu "Executable file formats / Emulations"
source "fs/Kconfig.binfmt"
config IA32_EMULATION
bool "IA32 Emulation"
help
Include code to run 32-bit programs under a 64-bit kernel. You should
likely turn this on, unless you're 100% sure that you don't have any
32-bit programs left.
config IA32_AOUT
tristate "IA32 a.out support"
depends on IA32_EMULATION
help
Support old a.out binaries in the 32bit emulation.
config COMPAT
bool
depends on IA32_EMULATION
default y
config COMPAT_FOR_U64_ALIGNMENT
def_bool COMPAT
config SYSVIPC_COMPAT
bool
depends on COMPAT && SYSVIPC
default y
endmenu
source "net/Kconfig"
source drivers/Kconfig
source "drivers/firmware/Kconfig"
source fs/Kconfig
source "kernel/Kconfig.instrumentation"
source "arch/x86/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"

10
arch/x86/Makefile
View file

@ -1,12 +1,16 @@
# Unified Makefile for i386 and x86_64
# select defconfig based on actual architecture
KBUILD_DEFCONFIG := $(ARCH)_defconfig
ifeq ($(ARCH),x86)
KBUILD_DEFCONFIG := i386_defconfig
else
KBUILD_DEFCONFIG := $(ARCH)_defconfig
endif
# # No need to remake these files
# No need to remake these files
$(srctree)/arch/x86/Makefile%: ;
ifeq ($(ARCH),i386)
ifeq ($(CONFIG_X86_32),y)
include $(srctree)/arch/x86/Makefile_32
else
include $(srctree)/arch/x86/Makefile_64

8
arch/x86/Makefile_32
View file

@ -160,7 +160,7 @@ archclean:
$(Q)$(MAKE) $(clean)=arch/x86/boot
define archhelp
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
echo ' (your) ~/bin/installkernel or'
echo ' (distribution) /sbin/installkernel or'
@ -170,6 +170,6 @@ define archhelp
echo ' isoimage - Create a boot CD-ROM image'
endef
CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
arch/$(ARCH)/boot/image.iso \
arch/$(ARCH)/boot/mtools.conf
CLEAN_FILES += arch/x86/boot/fdimage \
arch/x86/boot/image.iso \
arch/x86/boot/mtools.conf

8
arch/x86/Makefile_64
View file

@ -127,7 +127,7 @@ archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
echo ' install - Install kernel using'
echo ' (your) ~/bin/installkernel or'
echo ' (distribution) /sbin/installkernel or'
@ -137,8 +137,8 @@ define archhelp
echo ' isoimage - Create a boot CD-ROM image'
endef
CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
arch/$(ARCH)/boot/image.iso \
arch/$(ARCH)/boot/mtools.conf
CLEAN_FILES += arch/x86/boot/fdimage \
arch/x86/boot/image.iso \
arch/x86/boot/mtools.conf

6
arch/x86/boot/Makefile
View file

@ -49,10 +49,10 @@ HOSTCFLAGS_build.o := $(LINUXINCLUDE)
# How to compile the 16-bit code. Note we always compile for -march=i386,
# that way we can complain to the user if the CPU is insufficient.
cflags-i386 :=
cflags-x86_64 := -m32
cflags-$(CONFIG_X86_32) :=
cflags-$(CONFIG_X86_64) := -m32
KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
$(cflags-$(ARCH)) \
$(cflags-y) \
-Wall -Wstrict-prototypes \
-march=i386 -mregparm=3 \
-include $(srctree)/$(src)/code16gcc.h \

6
arch/x86/boot/cpucheck.c
View file

@ -42,13 +42,7 @@ static struct cpu_features cpu;
static u32 cpu_vendor[3];
static u32 err_flags[NCAPINTS];
#ifdef CONFIG_X86_64
static const int req_level = 64;
#elif defined(CONFIG_X86_MINIMUM_CPU_FAMILY)
static const int req_level = CONFIG_X86_MINIMUM_CPU_FAMILY;
#else
static const int req_level = 3;
#endif
static const u32 req_flags[NCAPINTS] =
{

3
arch/x86/kernel/Makefile_32
View file

@ -3,6 +3,7 @@
#
extra-y := head_32.o init_task.o vmlinux.lds
CPPFLAGS_vmlinux.lds += -Ui386
obj-y := process_32.o signal_32.o entry_32.o traps_32.o irq_32.o \
ptrace_32.o time_32.o ioport_32.o ldt_32.o setup_32.o i8259_32.o sys_i386_32.o \
@ -60,7 +61,7 @@ quiet_cmd_syscall = SYSCALL $@
cmd_syscall = $(CC) -m elf_i386 -nostdlib $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@
export CPPFLAGS_vsyscall_32.lds += -P -C -U$(ARCH)
export CPPFLAGS_vsyscall_32.lds += -P -C -Ui386
vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)

2
arch/x86/kernel/Makefile_64
View file

@ -3,7 +3,9 @@
#
extra-y := head_64.o head64.o init_task.o vmlinux.lds
CPPFLAGS_vmlinux.lds += -Ux86_64
EXTRA_AFLAGS := -traditional
obj-y := process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \
ptrace_64.o time_64.o ioport_64.o ldt_64.o setup_64.o i8259_64.o sys_x86_64.o \
x8664_ksyms_64.o i387_64.o syscall_64.o vsyscall_64.o \

69
arch/x86/kernel/cpu/cpufreq/Kconfig_32 → arch/x86/kernel/cpu/cpufreq/Kconfig
View file

@ -19,6 +19,9 @@ config X86_ACPI_CPUFREQ
Processor Performance States.
This driver also supports Intel Enhanced Speedstep.
To compile this driver as a module, choose M here: the
module will be called acpi-cpufreq.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
@ -26,7 +29,7 @@ config X86_ACPI_CPUFREQ
config ELAN_CPUFREQ
tristate "AMD Elan SC400 and SC410"
select CPU_FREQ_TABLE
depends on X86_ELAN
depends on X86_32 && X86_ELAN
---help---
This adds the CPUFreq driver for AMD Elan SC400 and SC410
processors.
@ -42,7 +45,7 @@ config ELAN_CPUFREQ
config SC520_CPUFREQ
tristate "AMD Elan SC520"
select CPU_FREQ_TABLE
depends on X86_ELAN
depends on X86_32 && X86_ELAN
---help---
This adds the CPUFreq driver for AMD Elan SC520 processor.
@ -54,6 +57,7 @@ config SC520_CPUFREQ
config X86_POWERNOW_K6
tristate "AMD Mobile K6-2/K6-3 PowerNow!"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
AMD K6-3+ processors.
@ -65,6 +69,7 @@ config X86_POWERNOW_K6
config X86_POWERNOW_K7
tristate "AMD Mobile Athlon/Duron PowerNow!"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for mobile AMD K7 mobile processors.
@ -76,23 +81,27 @@ config X86_POWERNOW_K7_ACPI
bool
depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
depends on X86_32
default y
config X86_POWERNOW_K8
tristate "AMD Opteron/Athlon64 PowerNow!"
select CPU_FREQ_TABLE
depends on EXPERIMENTAL
help
This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
To compile this driver as a module, choose M here: the
module will be called powernow-k8.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
config X86_POWERNOW_K8_ACPI
bool "ACPI Support"
select ACPI_PROCESSOR
depends on ACPI && X86_POWERNOW_K8
bool
prompt "ACPI Support" if X86_32
depends on ACPI && X86_POWERNOW_K8 && ACPI_PROCESSOR
depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m)
default y
help
This provides access to the K8s Processor Performance States via ACPI.
@ -104,7 +113,7 @@ config X86_POWERNOW_K8_ACPI
config X86_GX_SUSPMOD
tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
depends on PCI
depends on X86_32 && PCI
help
This add the CPUFreq driver for NatSemi Geode processors which
support suspend modulation.
@ -114,15 +123,20 @@ config X86_GX_SUSPMOD
If in doubt, say N.
config X86_SPEEDSTEP_CENTRINO
tristate "Intel Enhanced SpeedStep"
tristate "Intel Enhanced SpeedStep (deprecated)"
select CPU_FREQ_TABLE
select X86_SPEEDSTEP_CENTRINO_TABLE
select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
depends on X86_32 || (X86_64 && ACPI_PROCESSOR)
help
This is deprecated and this functionality is now merged into
acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
speedstep_centrino.
This adds the CPUFreq driver for Enhanced SpeedStep enabled
mobile CPUs. This means Intel Pentium M (Centrino) CPUs. However,
you also need to say Y to "Use ACPI tables to decode..." below
[which might imply enabling ACPI] if you want to use this driver
on non-Banias CPUs.
mobile CPUs. This means Intel Pentium M (Centrino) CPUs
or 64bit enabled Intel Xeons.
To compile this driver as a module, choose M here: the
module will be called speedstep-centrino.
For details, take a look at <file:Documentation/cpu-freq/>.
@ -130,7 +144,7 @@ config X86_SPEEDSTEP_CENTRINO
config X86_SPEEDSTEP_CENTRINO_TABLE
bool "Built-in tables for Banias CPUs"
depends on X86_SPEEDSTEP_CENTRINO
depends on X86_32 && X86_SPEEDSTEP_CENTRINO
default y
help
Use built-in tables for Banias CPUs if ACPI encoding
@ -141,6 +155,7 @@ config X86_SPEEDSTEP_CENTRINO_TABLE
config X86_SPEEDSTEP_ICH
tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
select CPU_FREQ_TABLE
depends on X86_32
help
This adds the CPUFreq driver for certain mobile Intel Pentium III
(Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
@ -154,7 +169,7 @@ config X86_SPEEDSTEP_ICH
config X86_SPEEDSTEP_SMI
tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
select CPU_FREQ_TABLE
depends on EXPERIMENTAL
depends on X86_32 && EXPERIMENTAL
help
This adds the CPUFreq driver for certain mobile Intel Pentium III
(Coppermine), all mobile Intel Pentium III-M (Tualatin)
@ -169,15 +184,24 @@ config X86_P4_CLOCKMOD
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for Intel Pentium 4 / XEON
processors.
processors. When enabled it will lower CPU temperature by skipping
clocks.
This driver should be only used in exceptional
circumstances when very low power is needed because it causes severe
slowdowns and noticeable latencies. Normally Speedstep should be used
instead.
To compile this driver as a module, choose M here: the
module will be called p4-clockmod.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
Unless you are absolutely sure say N.
config X86_CPUFREQ_NFORCE2
tristate "nVidia nForce2 FSB changing"
depends on EXPERIMENTAL
depends on X86_32 && EXPERIMENTAL
help
This adds the CPUFreq driver for FSB changing on nVidia nForce2
platforms.
@ -188,6 +212,7 @@ config X86_CPUFREQ_NFORCE2
config X86_LONGRUN
tristate "Transmeta LongRun"
depends on X86_32
help
This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
which support LongRun.
@ -199,7 +224,7 @@ config X86_LONGRUN
config X86_LONGHAUL
tristate "VIA Cyrix III Longhaul"
select CPU_FREQ_TABLE
depends on ACPI_PROCESSOR
depends on X86_32 && ACPI_PROCESSOR
help
This adds the CPUFreq driver for VIA Samuel/CyrixIII,
VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
@ -212,7 +237,7 @@ config X86_LONGHAUL
config X86_E_POWERSAVER
tristate "VIA C7 Enhanced PowerSaver (EXPERIMENTAL)"
select CPU_FREQ_TABLE
depends on EXPERIMENTAL
depends on X86_32 && EXPERIMENTAL
help
This adds the CPUFreq driver for VIA C7 processors.
@ -233,11 +258,11 @@ config X86_ACPI_CPUFREQ_PROC_INTF
config X86_SPEEDSTEP_LIB
tristate
default X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD
default (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD)
config X86_SPEEDSTEP_RELAXED_CAP_CHECK
bool "Relaxed speedstep capability checks"
depends on (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
depends on X86_32 && (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
help
Don't perform all checks for a speedstep capable system which would
normally be done. Some ancient or strange systems, though speedstep

108
arch/x86/kernel/cpu/cpufreq/Kconfig_64
View file

@ -1,108 +0,0 @@
#
# CPU Frequency scaling
#
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
if CPU_FREQ
comment "CPUFreq processor drivers"
config X86_POWERNOW_K8
tristate "AMD Opteron/Athlon64 PowerNow!"
select CPU_FREQ_TABLE
help
This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
To compile this driver as a module, choose M here: the
module will be called powernow-k8.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
config X86_POWERNOW_K8_ACPI
bool
depends on X86_POWERNOW_K8 && ACPI_PROCESSOR
depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m)
default y
config X86_SPEEDSTEP_CENTRINO
tristate "Intel Enhanced SpeedStep (deprecated)"
select CPU_FREQ_TABLE
depends on ACPI_PROCESSOR
help
This is deprecated and this functionality is now merged into
acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
speedstep_centrino.
This adds the CPUFreq driver for Enhanced SpeedStep enabled
mobile CPUs. This means Intel Pentium M (Centrino) CPUs
or 64bit enabled Intel Xeons.
To compile this driver as a module, choose M here: the
module will be called speedstep-centrino.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
config X86_ACPI_CPUFREQ
tristate "ACPI Processor P-States driver"
select CPU_FREQ_TABLE
depends on ACPI_PROCESSOR
help
This driver adds a CPUFreq driver which utilizes the ACPI
Processor Performance States.
This driver also supports Intel Enhanced Speedstep.
To compile this driver as a module, choose M here: the
module will be called acpi-cpufreq.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
comment "shared options"
config X86_ACPI_CPUFREQ_PROC_INTF
bool "/proc/acpi/processor/../performance interface (deprecated)"
depends on PROC_FS
depends on X86_ACPI_CPUFREQ || X86_POWERNOW_K8_ACPI
help
This enables the deprecated /proc/acpi/processor/../performance
interface. While it is helpful for debugging, the generic,
cross-architecture cpufreq interfaces should be used.
If in doubt, say N.
config X86_P4_CLOCKMOD
tristate "Intel Pentium 4 clock modulation"
depends on EMBEDDED
select CPU_FREQ_TABLE
help
This adds the clock modulation driver for Intel Pentium 4 / XEON
processors. When enabled it will lower CPU temperature by skipping
clocks.
This driver should be only used in exceptional
circumstances when very low power is needed because it causes severe
slowdowns and noticeable latencies. Normally Speedstep should be used
instead.
To compile this driver as a module, choose M here: the
module will be called p4-clockmod.
For details, take a look at <file:Documentation/cpu-freq/>.
Unless you are absolutely sure say N.
config X86_SPEEDSTEP_LIB
tristate
default X86_P4_CLOCKMOD
endif
endmenu

2
arch/x86/vdso/Makefile
View file

@ -20,7 +20,7 @@ quiet_cmd_syscall = SYSCALL $@
cmd_syscall = $(CC) -m elf_x86_64 -nostdlib $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@
export CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
export CPPFLAGS_vdso.lds += -P -C
vdso-flags = -fPIC -shared -Wl,-soname=linux-vdso.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv) \

7
scripts/kconfig/Makefile
View file

@ -4,12 +4,7 @@
PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
# If a arch/$(SRCARCH)/Kconfig.$(ARCH) file exist use it
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/Kconfig.$(ARCH)),)
Kconfig := arch/$(SRCARCH)/Kconfig.$(ARCH)
else
Kconfig := arch/$(SRCARCH)/Kconfig
endif
Kconfig := arch/$(SRCARCH)/Kconfig
xconfig: $(obj)/qconf
$< $(Kconfig)

1
scripts/kconfig/conf.c
View file

@ -591,6 +591,7 @@ int main(int ac, char **av)
conf_read_simple(name, S_DEF_USER);
else if (!stat("all.config", &tmpstat))
conf_read_simple("all.config", S_DEF_USER);
conf_set_env_sym("K64BIT", "64BIT", S_DEF_USER);
break;
default:
break;

146
scripts/kconfig/confdata.c
View file

@ -83,6 +83,95 @@ char *conf_get_default_confname(void)
return name;
}
static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
{
char *p2;
switch (sym->type) {
case S_TRISTATE:
if (p[0] == 'm') {
sym->def[def].tri = mod;
sym->flags |= def_flags;
break;
}
case S_BOOLEAN:
if (p[0] == 'y') {
sym->def[def].tri = yes;
sym->flags |= def_flags;
break;
}
if (p[0] == 'n') {
sym->def[def].tri = no;
sym->flags |= def_flags;
break;
}
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
break;
case S_OTHER:
if (*p != '"') {
for (p2 = p; *p2 && !isspace(*p2); p2++)
;
sym->type = S_STRING;
goto done;
}
case S_STRING:
if (*p++ != '"')
break;
for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
if (*p2 == '"') {
*p2 = 0;
break;
}
memmove(p2, p2 + 1, strlen(p2));
}
if (!p2) {
conf_warning("invalid string found");
return 1;
}
case S_INT:
case S_HEX:
done:
if (sym_string_valid(sym, p)) {
sym->def[def].val = strdup(p);
sym->flags |= def_flags;
} else {
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
return 1;
}
break;
default:
;
}
return 0;
}
/* Read an environment variable and assign the value to the symbol */
int conf_set_env_sym(const char *env, const char *symname, int def)
{
struct symbol *sym;
char *p;
int def_flags;
p = getenv(env);
if (p) {
char warning[200];
sprintf(warning, "Environment variable (%s = \"%s\")", env, p);
conf_filename = warning;
def_flags = SYMBOL_DEF << def;
if (def == S_DEF_USER) {
sym = sym_find(symname);
if (!sym)
return 1;
} else {
sym = sym_lookup(symname, 0);
if (sym->type == S_UNKNOWN)
sym->type = S_OTHER;
}
conf_set_sym_val(sym, def, def_flags, p);
}
return 0;
}
int conf_read_simple(const char *name, int def)
{
FILE *in = NULL;
@ -213,61 +302,8 @@ int conf_read_simple(const char *name, int def)
conf_warning("trying to reassign symbol %s", sym->name);
break;
}
switch (sym->type) {
case S_TRISTATE:
if (p[0] == 'm') {
sym->def[def].tri = mod;
sym->flags |= def_flags;
break;
}
case S_BOOLEAN:
if (p[0] == 'y') {
sym->def[def].tri = yes;
sym->flags |= def_flags;
break;
}
if (p[0] == 'n') {
sym->def[def].tri = no;
sym->flags |= def_flags;
break;
}
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
break;
case S_OTHER:
if (*p != '"') {
for (p2 = p; *p2 && !isspace(*p2); p2++)
;
sym->type = S_STRING;
goto done;
}
case S_STRING:
if (*p++ != '"')
break;
for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
if (*p2 == '"') {
*p2 = 0;
break;
}
memmove(p2, p2 + 1, strlen(p2));
}
if (!p2) {
conf_warning("invalid string found");
continue;
}
case S_INT:
case S_HEX:
done:
if (sym_string_valid(sym, p)) {
sym->def[def].val = strdup(p);
sym->flags |= def_flags;
} else {
conf_warning("symbol value '%s' invalid for %s", p, sym->name);
continue;
}
break;
default:
;
}
if (conf_set_sym_val(sym, def, def_flags, p))
continue;
break;
case '\r':
case '\n':

1
scripts/kconfig/lkc_proto.h
View file

@ -1,6 +1,7 @@
/* confdata.c */
P(conf_parse,void,(const char *name));
P(conf_set_env_sym,int,(const char *envname, const char *symname, int def));
P(conf_read,int,(const char *name));
P(conf_read_simple,int,(const char *name, int));
P(conf_write,int,(const char *name));