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Diffstat (limited to 'arch/x86/Kconfig.x86_64')
| -rw-r--r-- | arch/x86/Kconfig.x86_64 | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/arch/x86/Kconfig.x86_64 b/arch/x86/Kconfig.x86_64 index e441062472a8..b262aaec67cc 100644 --- a/arch/x86/Kconfig.x86_64 +++ b/arch/x86/Kconfig.x86_64 @@ -17,494 +17,4 @@ config X86_64 classical 32-bit x86 architecture. For details see <http://www.x86-64.org/>. -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 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 - -source "arch/x86/Kconfig.cpu" - -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 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 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 NODES_SHIFT - int - default "6" if X86_64 - 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 X86_64 && 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 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 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 X86_64 - depends on MEMORY_HOTPLUG - -config ARCH_FLATMEM_ENABLE - def_bool y - depends on !NUMA - -source "mm/Kconfig" - -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 - -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" if X86_64 - -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 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 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_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 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 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 K8_NB - def_bool X86_64 - depends on AGP_AMD64 || GART_IOMMU || (PCI && NUMA) - -endmenu - source "arch/x86/Kconfig" |