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x86: copy x86_64 specific Kconfig symbols to Kconfig.i386

Browse source 
No functional changes.
A prepatory step towards full unification.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Sam Ravnborg 2007-11-06 23:10:39 +01:00
parent d2cacbcfaa
commit bc0120fdb4
2 changed files with 198 additions and 23 deletions
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6
arch/x86/Kconfig
View file

@ -353,11 +353,11 @@ 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
endif # X86_32
depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
source "drivers/pcmcia/Kconfig"

215
arch/x86/Kconfig.i386
View file

@ -218,6 +218,14 @@ config X86_ES7000
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
@ -299,20 +307,87 @@ source "arch/x86/Kconfig.cpu"
config HPET_TIMER
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
@ -329,7 +404,7 @@ 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
@ -338,7 +413,7 @@ 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
@ -374,12 +449,12 @@ config X86_UP_IOAPIC
config X86_LOCAL_APIC
bool
depends on X86_32 && (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_32 && (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
@ -404,6 +479,22 @@ 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_32 && X86_MCE
@ -651,19 +742,55 @@ config X86_PAE
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
depends on X86_32 && 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_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
@ -690,7 +817,7 @@ config HAVE_ARCH_ALLOC_REMAP
config ARCH_FLATMEM_ENABLE
def_bool y
depends on X86_32 && 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
@ -702,8 +829,9 @@ config ARCH_DISCONTIGMEM_DEFAULT
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on (NUMA || (X86_PC && EXPERIMENTAL))
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
@ -712,6 +840,10 @@ config ARCH_SELECT_MEMORY_MODEL
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
@ -833,6 +965,30 @@ 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
@ -854,7 +1010,7 @@ 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
@ -869,6 +1025,7 @@ 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.
@ -921,10 +1078,15 @@ 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
prompt "Alignment value to which kernel should be aligned" if X86_32
default "0x100000"
default "0x100000" if X86_32
default "0x200000" if X86_64
range 0x2000 0x400000
help
This value puts the alignment restrictions on physical address
@ -952,6 +1114,8 @@ 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"
@ -970,8 +1134,19 @@ endmenu
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y
depends on HIGHMEM
depends on X86_64 || (X86_32 && HIGHMEM)
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
#
# Use the generic interrupt handling code in kernel/irq/:
@ -996,7 +1171,7 @@ config X86_SMP
config X86_HT
bool
depends on SMP && !(X86_VISWS || X86_VOYAGER)
depends on SMP && !(X86_VISWS || X86_VOYAGER || MK8)
default y
config X86_BIOS_REBOOT