54d5d42404
When handling writes to /proc/irq, current code is re-programming rte entries directly. This is not recommended and could potentially cause chipset's to lockup, or cause missing interrupts. CONFIG_IRQ_BALANCE does this correctly, where it re-programs only when the interrupt is pending. The same needs to be done for /proc/irq handling as well. Otherwise user space irq balancers are really not doing the right thing. - Changed pending_irq_balance_cpumask to pending_irq_migrate_cpumask for lack of a generic name. - added move_irq out of IRQ_BALANCE, and added this same to X86_64 - Added new proc handler for write, so we can do deferred write at irq handling time. - Display of /proc/irq/XX/smp_affinity used to display CPU_MASKALL, instead it now shows only active cpu masks, or exactly what was set. - Provided a common move_irq implementation, instead of duplicating when using generic irq framework. Tested on i386/x86_64 and ia64 with CONFIG_PCI_MSI turned on and off. Tested UP builds as well. MSI testing: tbd: I have cards, need to look for a x-over cable, although I did test an earlier version of this patch. Will test in a couple days. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Zwane Mwaikambo <zwane@holomorphy.com> Grudgingly-acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1350 lines
43 KiB
Plaintext
1350 lines
43 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Linux Kernel Configuration"
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config X86
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bool
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default y
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help
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This is Linux's home port. Linux was originally native to the Intel
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386, and runs on all the later x86 processors including the Intel
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486, 586, Pentiums, and various instruction-set-compatible chips by
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AMD, Cyrix, and others.
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config SEMAPHORE_SLEEPERS
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bool
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default y
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config MMU
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bool
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default y
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config SBUS
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bool
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config UID16
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bool
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default y
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config GENERIC_ISA_DMA
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bool
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default y
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config GENERIC_IOMAP
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bool
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default y
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source "init/Kconfig"
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menu "Processor type and features"
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choice
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prompt "Subarchitecture Type"
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default X86_PC
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config X86_PC
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bool "PC-compatible"
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help
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Choose this option if your computer is a standard PC or compatible.
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config X86_ELAN
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bool "AMD Elan"
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help
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Select this for an AMD Elan processor.
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Do not use this option for K6/Athlon/Opteron processors!
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If unsure, choose "PC-compatible" instead.
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config X86_VOYAGER
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bool "Voyager (NCR)"
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help
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Voyager is an MCA-based 32-way capable SMP architecture proprietary
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to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based.
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*** WARNING ***
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If you do not specifically know you have a Voyager based machine,
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say N here, otherwise the kernel you build will not be bootable.
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config X86_NUMAQ
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bool "NUMAQ (IBM/Sequent)"
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select NUMA
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help
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This option is used for getting Linux to run on a (IBM/Sequent) NUMA
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multiquad box. This changes the way that processors are bootstrapped,
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and uses Clustered Logical APIC addressing mode instead of Flat Logical.
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You will need a new lynxer.elf file to flash your firmware with - send
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email to <Martin.Bligh@us.ibm.com>.
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config X86_SUMMIT
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bool "Summit/EXA (IBM x440)"
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depends on SMP
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help
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This option is needed for IBM systems that use the Summit/EXA chipset.
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In particular, it is needed for the x440.
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If you don't have one of these computers, you should say N here.
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config X86_BIGSMP
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bool "Support for other sub-arch SMP systems with more than 8 CPUs"
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depends on SMP
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help
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This option is needed for the systems that have more than 8 CPUs
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and if the system is not of any sub-arch type above.
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If you don't have such a system, you should say N here.
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config X86_VISWS
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bool "SGI 320/540 (Visual Workstation)"
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help
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The SGI Visual Workstation series is an IA32-based workstation
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based on SGI systems chips with some legacy PC hardware attached.
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Say Y here to create a kernel to run on the SGI 320 or 540.
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A kernel compiled for the Visual Workstation will not run on PCs
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and vice versa. See <file:Documentation/sgi-visws.txt> for details.
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config X86_GENERICARCH
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bool "Generic architecture (Summit, bigsmp, ES7000, default)"
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depends on SMP
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help
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This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
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It is intended for a generic binary kernel.
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config X86_ES7000
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bool "Support for Unisys ES7000 IA32 series"
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depends on SMP
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help
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Support for Unisys ES7000 systems. Say 'Y' here if this kernel is
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supposed to run on an IA32-based Unisys ES7000 system.
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Only choose this option if you have such a system, otherwise you
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should say N here.
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endchoice
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config ACPI_SRAT
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bool
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default y
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depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
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config X86_SUMMIT_NUMA
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bool
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default y
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depends on NUMA && (X86_SUMMIT || X86_GENERICARCH)
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config X86_CYCLONE_TIMER
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bool
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default y
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depends on X86_SUMMIT || X86_GENERICARCH
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config ES7000_CLUSTERED_APIC
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bool
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default y
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depends on SMP && X86_ES7000 && MPENTIUMIII
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if !X86_ELAN
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choice
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prompt "Processor family"
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default M686
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config M386
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bool "386"
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---help---
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This is the processor type of your CPU. This information is used for
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optimizing purposes. In order to compile a kernel that can run on
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all x86 CPU types (albeit not optimally fast), you can specify
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"386" here.
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The kernel will not necessarily run on earlier architectures than
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the one you have chosen, e.g. a Pentium optimized kernel will run on
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a PPro, but not necessarily on a i486.
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Here are the settings recommended for greatest speed:
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- "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
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486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels
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will run on a 386 class machine.
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- "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
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SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
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- "586" for generic Pentium CPUs lacking the TSC
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(time stamp counter) register.
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- "Pentium-Classic" for the Intel Pentium.
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- "Pentium-MMX" for the Intel Pentium MMX.
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- "Pentium-Pro" for the Intel Pentium Pro.
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- "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
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- "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
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- "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
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- "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
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- "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
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- "Crusoe" for the Transmeta Crusoe series.
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- "Efficeon" for the Transmeta Efficeon series.
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- "Winchip-C6" for original IDT Winchip.
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- "Winchip-2" for IDT Winchip 2.
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- "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
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- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
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- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
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- "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
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If you don't know what to do, choose "386".
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config M486
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bool "486"
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help
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Select this for a 486 series processor, either Intel or one of the
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compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
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DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
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U5S.
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config M586
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bool "586/K5/5x86/6x86/6x86MX"
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help
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Select this for an 586 or 686 series processor such as the AMD K5,
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the Cyrix 5x86, 6x86 and 6x86MX. This choice does not
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assume the RDTSC (Read Time Stamp Counter) instruction.
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config M586TSC
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bool "Pentium-Classic"
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help
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Select this for a Pentium Classic processor with the RDTSC (Read
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Time Stamp Counter) instruction for benchmarking.
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config M586MMX
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bool "Pentium-MMX"
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help
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Select this for a Pentium with the MMX graphics/multimedia
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extended instructions.
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config M686
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bool "Pentium-Pro"
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help
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Select this for Intel Pentium Pro chips. This enables the use of
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Pentium Pro extended instructions, and disables the init-time guard
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against the f00f bug found in earlier Pentiums.
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config MPENTIUMII
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bool "Pentium-II/Celeron(pre-Coppermine)"
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help
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Select this for Intel chips based on the Pentium-II and
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pre-Coppermine Celeron core. This option enables an unaligned
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copy optimization, compiles the kernel with optimization flags
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tailored for the chip, and applies any applicable Pentium Pro
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optimizations.
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config MPENTIUMIII
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bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
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help
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Select this for Intel chips based on the Pentium-III and
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Celeron-Coppermine core. This option enables use of some
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extended prefetch instructions in addition to the Pentium II
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extensions.
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config MPENTIUMM
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bool "Pentium M"
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help
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Select this for Intel Pentium M (not Pentium-4 M)
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notebook chips.
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config MPENTIUM4
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bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/Xeon"
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help
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Select this for Intel Pentium 4 chips. This includes the
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Pentium 4, P4-based Celeron and Xeon, and Pentium-4 M
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(not Pentium M) chips. This option enables compile flags
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optimized for the chip, uses the correct cache shift, and
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applies any applicable Pentium III optimizations.
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config MK6
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bool "K6/K6-II/K6-III"
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help
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Select this for an AMD K6-family processor. Enables use of
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some extended instructions, and passes appropriate optimization
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flags to GCC.
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config MK7
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bool "Athlon/Duron/K7"
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help
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Select this for an AMD Athlon K7-family processor. Enables use of
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some extended instructions, and passes appropriate optimization
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flags to GCC.
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config MK8
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bool "Opteron/Athlon64/Hammer/K8"
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help
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Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables
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use of some extended instructions, and passes appropriate optimization
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flags to GCC.
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config MCRUSOE
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bool "Crusoe"
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help
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Select this for a Transmeta Crusoe processor. Treats the processor
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like a 586 with TSC, and sets some GCC optimization flags (like a
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Pentium Pro with no alignment requirements).
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config MEFFICEON
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bool "Efficeon"
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help
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Select this for a Transmeta Efficeon processor.
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config MWINCHIPC6
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bool "Winchip-C6"
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help
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Select this for an IDT Winchip C6 chip. Linux and GCC
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treat this chip as a 586TSC with some extended instructions
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and alignment requirements.
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config MWINCHIP2
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bool "Winchip-2"
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help
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Select this for an IDT Winchip-2. Linux and GCC
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treat this chip as a 586TSC with some extended instructions
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and alignment requirements.
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config MWINCHIP3D
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bool "Winchip-2A/Winchip-3"
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help
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Select this for an IDT Winchip-2A or 3. Linux and GCC
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treat this chip as a 586TSC with some extended instructions
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and alignment reqirements. Also enable out of order memory
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stores for this CPU, which can increase performance of some
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operations.
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config MGEODEGX1
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bool "GeodeGX1"
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help
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Select this for a Geode GX1 (Cyrix MediaGX) chip.
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config MCYRIXIII
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bool "CyrixIII/VIA-C3"
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help
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Select this for a Cyrix III or C3 chip. Presently Linux and GCC
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treat this chip as a generic 586. Whilst the CPU is 686 class,
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it lacks the cmov extension which gcc assumes is present when
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generating 686 code.
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Note that Nehemiah (Model 9) and above will not boot with this
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kernel due to them lacking the 3DNow! instructions used in earlier
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incarnations of the CPU.
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config MVIAC3_2
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bool "VIA C3-2 (Nehemiah)"
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help
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Select this for a VIA C3 "Nehemiah". Selecting this enables usage
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of SSE and tells gcc to treat the CPU as a 686.
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Note, this kernel will not boot on older (pre model 9) C3s.
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endchoice
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config X86_GENERIC
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bool "Generic x86 support"
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help
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Instead of just including optimizations for the selected
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x86 variant (e.g. PII, Crusoe or Athlon), include some more
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generic optimizations as well. This will make the kernel
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perform better on x86 CPUs other than that selected.
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This is really intended for distributors who need more
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generic optimizations.
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endif
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#
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# Define implied options from the CPU selection here
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#
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config X86_CMPXCHG
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bool
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depends on !M386
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default y
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config X86_XADD
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bool
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depends on !M386
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default y
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config X86_L1_CACHE_SHIFT
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int
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default "7" if MPENTIUM4 || X86_GENERIC
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default "4" if X86_ELAN || M486 || M386
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default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1
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default "6" if MK7 || MK8 || MPENTIUMM
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config RWSEM_GENERIC_SPINLOCK
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bool
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depends on M386
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default y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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depends on !M386
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config X86_PPRO_FENCE
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bool
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depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
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default y
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config X86_F00F_BUG
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bool
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depends on M586MMX || M586TSC || M586 || M486 || M386
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default y
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config X86_WP_WORKS_OK
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bool
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depends on !M386
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default y
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config X86_INVLPG
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bool
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depends on !M386
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default y
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config X86_BSWAP
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bool
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depends on !M386
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default y
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config X86_POPAD_OK
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bool
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depends on !M386
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default y
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config X86_ALIGNMENT_16
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bool
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depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
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default y
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config X86_GOOD_APIC
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bool
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depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON
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default y
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config X86_INTEL_USERCOPY
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bool
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depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON
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default y
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config X86_USE_PPRO_CHECKSUM
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bool
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depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON
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default y
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config X86_USE_3DNOW
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bool
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depends on MCYRIXIII || MK7
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default y
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config X86_OOSTORE
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bool
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depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
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default y
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config HPET_TIMER
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bool "HPET Timer Support"
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help
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This enables the use of the HPET for the kernel's internal timer.
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HPET is the next generation timer replacing legacy 8254s.
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You can safely choose Y here. However, HPET will only be
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activated if the platform and the BIOS support this feature.
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Otherwise the 8254 will be used for timing services.
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Choose N to continue using the legacy 8254 timer.
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config HPET_EMULATE_RTC
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bool
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depends on HPET_TIMER && RTC=y
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default y
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config SMP
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bool "Symmetric multi-processing support"
|
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---help---
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, like most personal computers, say N. If
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you have a system with more than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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singleprocessor machines. On a singleprocessor machine, the kernel
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will run faster if you say N here.
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Note that if you say Y here and choose architecture "586" or
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"Pentium" under "Processor family", the kernel will not work on 486
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architectures. Similarly, multiprocessor kernels for the "PPro"
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architecture may not work on all Pentium based boards.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
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Management" code will be disabled if you say Y here.
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|
See also the <file:Documentation/smp.txt>,
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|
<file:Documentation/i386/IO-APIC.txt>,
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|
<file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
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|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs (2-255)"
|
|
range 2 255
|
|
depends on SMP
|
|
default "32" if X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000
|
|
default "8"
|
|
help
|
|
This allows you to specify the maximum number of CPUs which this
|
|
kernel will support. The maximum supported value is 255 and the
|
|
minimum value which makes sense is 2.
|
|
|
|
This is purely to save memory - each supported CPU adds
|
|
approximately eight kilobytes to the kernel image.
|
|
|
|
config SCHED_SMT
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
depends on SMP
|
|
default off
|
|
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.
|
|
|
|
source "kernel/Kconfig.preempt"
|
|
|
|
config X86_UP_APIC
|
|
bool "Local APIC support on uniprocessors"
|
|
depends on !SMP && !(X86_VISWS || X86_VOYAGER)
|
|
help
|
|
A local APIC (Advanced Programmable Interrupt Controller) is an
|
|
integrated interrupt controller in the CPU. If you have a single-CPU
|
|
system which has a processor with a local APIC, you can say Y here to
|
|
enable and use it. If you say Y here even though your machine doesn't
|
|
have a local APIC, then the kernel will still run with no slowdown at
|
|
all. The local APIC supports CPU-generated self-interrupts (timer,
|
|
performance counters), and the NMI watchdog which detects hard
|
|
lockups.
|
|
|
|
config X86_UP_IOAPIC
|
|
bool "IO-APIC support on uniprocessors"
|
|
depends on X86_UP_APIC
|
|
help
|
|
An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
|
|
SMP-capable replacement for PC-style interrupt controllers. Most
|
|
SMP systems and many recent uniprocessor systems have one.
|
|
|
|
If you have a single-CPU system with an IO-APIC, you can say Y here
|
|
to use it. If you say Y here even though your machine doesn't have
|
|
an IO-APIC, then the kernel will still run with no slowdown at all.
|
|
|
|
config X86_LOCAL_APIC
|
|
bool
|
|
depends on X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER)
|
|
default y
|
|
|
|
config X86_IO_APIC
|
|
bool
|
|
depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER))
|
|
default y
|
|
|
|
config X86_VISWS_APIC
|
|
bool
|
|
depends on X86_VISWS
|
|
default y
|
|
|
|
config X86_TSC
|
|
bool
|
|
depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1) && !X86_NUMAQ
|
|
default y
|
|
|
|
config X86_MCE
|
|
bool "Machine Check Exception"
|
|
depends on !X86_VOYAGER
|
|
---help---
|
|
Machine Check Exception support allows the processor to notify the
|
|
kernel if it detects a problem (e.g. overheating, component failure).
|
|
The action the kernel takes depends on the severity of the problem,
|
|
ranging from a warning message on the console, to halting the machine.
|
|
Your processor must be a Pentium or newer to support this - check the
|
|
flags in /proc/cpuinfo for mce. Note that some older Pentium systems
|
|
have a design flaw which leads to false MCE events - hence MCE is
|
|
disabled on all P5 processors, unless explicitly enabled with "mce"
|
|
as a boot argument. Similarly, if MCE is built in and creates a
|
|
problem on some new non-standard machine, you can boot with "nomce"
|
|
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_NONFATAL
|
|
tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4"
|
|
depends on 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.
|
|
Non-fatal problems automatically get corrected (but still logged).
|
|
Disable this if you don't want to see these messages.
|
|
Seeing the messages this option prints out may be indicative of dying hardware,
|
|
or out-of-spec (ie, overclocked) hardware.
|
|
This option only does something on certain CPUs.
|
|
(AMD Athlon/Duron and Intel Pentium 4)
|
|
|
|
config X86_MCE_P4THERMAL
|
|
bool "check for P4 thermal throttling interrupt."
|
|
depends on 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 TOSHIBA
|
|
tristate "Toshiba Laptop support"
|
|
---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
|
|
not work on models with a Phoenix BIOS. The System Management Mode
|
|
is used to set the BIOS and power saving options on Toshiba portables.
|
|
|
|
For information on utilities to make use of this driver see the
|
|
Toshiba Linux utilities web site at:
|
|
<http://www.buzzard.org.uk/toshiba/>.
|
|
|
|
Say Y if you intend to run this kernel on a Toshiba portable.
|
|
Say N otherwise.
|
|
|
|
config I8K
|
|
tristate "Dell laptop support"
|
|
---help---
|
|
This adds a driver to safely access the System Management Mode
|
|
of the CPU on the Dell Inspiron 8000. The System Management Mode
|
|
is used to read cpu temperature and cooling fan status and to
|
|
control the fans on the I8K portables.
|
|
|
|
This driver has been tested only on the Inspiron 8000 but it may
|
|
also work with other Dell laptops. You can force loading on other
|
|
models by passing the parameter `force=1' to the module. Use at
|
|
your own risk.
|
|
|
|
For information on utilities to make use of this driver see the
|
|
I8K Linux utilities web site at:
|
|
<http://people.debian.org/~dz/i8k/>
|
|
|
|
Say Y if you intend to run this kernel on a Dell Inspiron 8000.
|
|
Say N otherwise.
|
|
|
|
config X86_REBOOTFIXUPS
|
|
bool "Enable X86 board specific fixups for reboot"
|
|
depends on X86
|
|
default n
|
|
---help---
|
|
This enables chipset and/or board specific fixups to be done
|
|
in order to get reboot to work correctly. This is only needed on
|
|
some combinations of hardware and BIOS. The symptom, for which
|
|
this config is intended, is when reboot ends with a stalled/hung
|
|
system.
|
|
|
|
Currently, the only fixup is for the Geode GX1/CS5530A/TROM2.1.
|
|
combination.
|
|
|
|
Say Y if you want to enable the fixup. Currently, it's safe to
|
|
enable this option even if you don't need it.
|
|
Say N otherwise.
|
|
|
|
config MICROCODE
|
|
tristate "/dev/cpu/microcode - Intel IA32 CPU microcode support"
|
|
---help---
|
|
If you say Y here and also to "/dev file system support" in the
|
|
'File systems' section, you will be able to update the microcode on
|
|
Intel processors in the IA32 family, e.g. Pentium Pro, Pentium II,
|
|
Pentium III, Pentium 4, Xeon etc. 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.
|
|
|
|
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.
|
|
|
|
source "drivers/firmware/Kconfig"
|
|
|
|
choice
|
|
prompt "High Memory Support"
|
|
default NOHIGHMEM
|
|
|
|
config NOHIGHMEM
|
|
bool "off"
|
|
---help---
|
|
Linux can use up to 64 Gigabytes of physical memory on x86 systems.
|
|
However, the address space of 32-bit x86 processors is only 4
|
|
Gigabytes large. That means that, if you have a large amount of
|
|
physical memory, not all of it can be "permanently mapped" by the
|
|
kernel. The physical memory that's not permanently mapped is called
|
|
"high memory".
|
|
|
|
If you are compiling a kernel which will never run on a machine with
|
|
more than 1 Gigabyte total physical RAM, answer "off" here (default
|
|
choice and suitable for most users). This will result in a "3GB/1GB"
|
|
split: 3GB are mapped so that each process sees a 3GB virtual memory
|
|
space and the remaining part of the 4GB virtual memory space is used
|
|
by the kernel to permanently map as much physical memory as
|
|
possible.
|
|
|
|
If the machine has between 1 and 4 Gigabytes physical RAM, then
|
|
answer "4GB" here.
|
|
|
|
If more than 4 Gigabytes is used then answer "64GB" here. This
|
|
selection turns Intel PAE (Physical Address Extension) mode on.
|
|
PAE implements 3-level paging on IA32 processors. PAE is fully
|
|
supported by Linux, PAE mode is implemented on all recent Intel
|
|
processors (Pentium Pro and better). NOTE: If you say "64GB" here,
|
|
then the kernel will not boot on CPUs that don't support PAE!
|
|
|
|
The actual amount of total physical memory will either be
|
|
auto detected or can be forced by using a kernel command line option
|
|
such as "mem=256M". (Try "man bootparam" or see the documentation of
|
|
your boot loader (lilo or loadlin) about how to pass options to the
|
|
kernel at boot time.)
|
|
|
|
If unsure, say "off".
|
|
|
|
config HIGHMEM4G
|
|
bool "4GB"
|
|
help
|
|
Select this if you have a 32-bit processor and between 1 and 4
|
|
gigabytes of physical RAM.
|
|
|
|
config HIGHMEM64G
|
|
bool "64GB"
|
|
help
|
|
Select this if you have a 32-bit processor and more than 4
|
|
gigabytes of physical RAM.
|
|
|
|
endchoice
|
|
|
|
config HIGHMEM
|
|
bool
|
|
depends on HIGHMEM64G || HIGHMEM4G
|
|
default y
|
|
|
|
config X86_PAE
|
|
bool
|
|
depends on HIGHMEM64G
|
|
default y
|
|
|
|
# Common NUMA Features
|
|
config NUMA
|
|
bool "Numa Memory Allocation and Scheduler Support"
|
|
depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
|
|
default n if X86_PC
|
|
default y if (X86_NUMAQ || X86_SUMMIT)
|
|
select SPARSEMEM_STATIC
|
|
|
|
# Need comments to help the hapless user trying to turn on NUMA support
|
|
comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
|
|
depends on X86_NUMAQ && (!HIGHMEM64G || !SMP)
|
|
|
|
comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
|
|
depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
|
|
|
|
config HAVE_ARCH_BOOTMEM_NODE
|
|
bool
|
|
depends on NUMA
|
|
default y
|
|
|
|
config ARCH_HAVE_MEMORY_PRESENT
|
|
bool
|
|
depends on DISCONTIGMEM
|
|
default y
|
|
|
|
config NEED_NODE_MEMMAP_SIZE
|
|
bool
|
|
depends on DISCONTIGMEM || SPARSEMEM
|
|
default y
|
|
|
|
config HAVE_ARCH_ALLOC_REMAP
|
|
bool
|
|
depends on NUMA
|
|
default y
|
|
|
|
config ARCH_DISCONTIGMEM_ENABLE
|
|
def_bool y
|
|
depends on NUMA
|
|
|
|
config ARCH_DISCONTIGMEM_DEFAULT
|
|
def_bool y
|
|
depends on NUMA
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
def_bool y
|
|
depends on NUMA
|
|
|
|
config ARCH_SELECT_MEMORY_MODEL
|
|
def_bool y
|
|
depends on ARCH_SPARSEMEM_ENABLE
|
|
|
|
source "mm/Kconfig"
|
|
|
|
config HAVE_ARCH_EARLY_PFN_TO_NID
|
|
bool
|
|
default y
|
|
depends on NUMA
|
|
|
|
config HIGHPTE
|
|
bool "Allocate 3rd-level pagetables from highmem"
|
|
depends on 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
|
|
low memory. Setting this option will put user-space page table
|
|
entries in high memory.
|
|
|
|
config MATH_EMULATION
|
|
bool "Math emulation"
|
|
---help---
|
|
Linux can emulate a math coprocessor (used for floating point
|
|
operations) if you don't have one. 486DX and Pentium processors have
|
|
a math coprocessor built in, 486SX and 386 do not, unless you added
|
|
a 487DX or 387, respectively. (The messages during boot time can
|
|
give you some hints here ["man dmesg"].) Everyone needs either a
|
|
coprocessor or this emulation.
|
|
|
|
If you don't have a math coprocessor, you need to say Y here; if you
|
|
say Y here even though you have a coprocessor, the coprocessor will
|
|
be used nevertheless. (This behavior can be changed with the kernel
|
|
command line option "no387", which comes handy if your coprocessor
|
|
is broken. Try "man bootparam" or see the documentation of your boot
|
|
loader (lilo or loadlin) about how to pass options to the kernel at
|
|
boot time.) This means that it is a good idea to say Y here if you
|
|
intend to use this kernel on different machines.
|
|
|
|
More information about the internals of the Linux math coprocessor
|
|
emulation can be found in <file:arch/i386/math-emu/README>.
|
|
|
|
If you are not sure, say Y; apart from resulting in a 66 KB bigger
|
|
kernel, it won't hurt.
|
|
|
|
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:
|
|
|
|
The Cyrix 6x86, 6x86MX and M II processors have Address Range
|
|
Registers (ARRs) which provide a similar functionality to MTRRs. For
|
|
these, the ARRs are used to emulate the MTRRs.
|
|
The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
|
|
MTRRs. The Centaur C6 (WinChip) has 8 MCRs, allowing
|
|
write-combining. All of these processors are supported by this code
|
|
and it makes sense to say Y here if you have one of them.
|
|
|
|
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.
|
|
|
|
You can safely say Y even if your machine doesn't have MTRRs, you'll
|
|
just add about 9 KB to your kernel.
|
|
|
|
See <file:Documentation/mtrr.txt> for more information.
|
|
|
|
config EFI
|
|
bool "Boot from EFI support (EXPERIMENTAL)"
|
|
depends on ACPI
|
|
default n
|
|
---help---
|
|
This enables the the kernel to boot on EFI platforms using
|
|
system configuration information passed to it from the firmware.
|
|
This also enables the kernel to use any EFI runtime services that are
|
|
available (such as the EFI variable services).
|
|
|
|
This option is only useful on systems that have EFI firmware
|
|
and will result in a kernel image that is ~8k larger. In addition,
|
|
you must use the latest ELILO loader available at
|
|
<http://elilo.sourceforge.net> in order to take advantage of
|
|
kernel initialization using EFI information (neither GRUB nor LILO know
|
|
anything about EFI). However, even with this option, the resultant
|
|
kernel should continue to boot on existing non-EFI platforms.
|
|
|
|
config IRQBALANCE
|
|
bool "Enable kernel irq balancing"
|
|
depends on SMP && X86_IO_APIC
|
|
default y
|
|
help
|
|
The default yes will allow the kernel to do irq load balancing.
|
|
Saying no will keep the kernel from doing irq load balancing.
|
|
|
|
config HAVE_DEC_LOCK
|
|
bool
|
|
depends on (SMP || PREEMPT) && X86_CMPXCHG
|
|
default y
|
|
|
|
# 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))
|
|
default y
|
|
|
|
config REGPARM
|
|
bool "Use register arguments (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
default n
|
|
help
|
|
Compile the kernel with -mregparm=3. This uses a different ABI
|
|
and passes the first three arguments of a function call in registers.
|
|
This will probably break binary only modules.
|
|
|
|
This feature is only enabled for gcc-3.0 and later - earlier compilers
|
|
generate incorrect output with certain kernel constructs when
|
|
-mregparm=3 is used.
|
|
|
|
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.
|
|
|
|
source kernel/Kconfig.hz
|
|
|
|
config PHYSICAL_START
|
|
hex "Physical address where the kernel is loaded" if EMBEDDED
|
|
default "0x100000"
|
|
help
|
|
This gives the physical address where the kernel is loaded.
|
|
Primarily used in the case of kexec on panic where the
|
|
fail safe kernel needs to run at a different address than
|
|
the panic-ed kernel.
|
|
|
|
Don't change this unless you know what you are doing.
|
|
|
|
config KEXEC
|
|
bool "kexec system call (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL
|
|
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 indepedent of the system firmware. And like a reboot
|
|
you can start any kernel with it, not just Linux.
|
|
|
|
The name comes from the similiarity 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 EMBEDDED
|
|
depends on EXPERIMENTAL
|
|
depends on HIGHMEM
|
|
help
|
|
Generate crash dump after being started by kexec.
|
|
endmenu
|
|
|
|
|
|
menu "Power management options (ACPI, APM)"
|
|
depends on !X86_VOYAGER
|
|
|
|
source kernel/power/Kconfig
|
|
|
|
source "drivers/acpi/Kconfig"
|
|
|
|
menu "APM (Advanced Power Management) BIOS Support"
|
|
depends on PM && !X86_VISWS
|
|
|
|
config APM
|
|
tristate "APM (Advanced Power Management) BIOS support"
|
|
depends on PM
|
|
---help---
|
|
APM is a BIOS specification for saving power using several different
|
|
techniques. This is mostly useful for battery powered laptops with
|
|
APM compliant BIOSes. If you say Y here, the system time will be
|
|
reset after a RESUME operation, the /proc/apm device will provide
|
|
battery status information, and user-space programs will receive
|
|
notification of APM "events" (e.g. battery status change).
|
|
|
|
If you select "Y" here, you can disable actual use of the APM
|
|
BIOS by passing the "apm=off" option to the kernel at boot time.
|
|
|
|
Note that the APM support is almost completely disabled for
|
|
machines with more than one CPU.
|
|
|
|
In order to use APM, you will need supporting software. For location
|
|
and more information, read <file:Documentation/pm.txt> and the
|
|
Battery Powered Linux mini-HOWTO, available from
|
|
<http://www.tldp.org/docs.html#howto>.
|
|
|
|
This driver does not spin down disk drives (see the hdparm(8)
|
|
manpage ("man 8 hdparm") for that), and it doesn't turn off
|
|
VESA-compliant "green" monitors.
|
|
|
|
This driver does not support the TI 4000M TravelMate and the ACER
|
|
486/DX4/75 because they don't have compliant BIOSes. Many "green"
|
|
desktop machines also don't have compliant BIOSes, and this driver
|
|
may cause those machines to panic during the boot phase.
|
|
|
|
Generally, if you don't have a battery in your machine, there isn't
|
|
much point in using this driver and you should say N. If you get
|
|
random kernel OOPSes or reboots that don't seem to be related to
|
|
anything, try disabling/enabling this option (or disabling/enabling
|
|
APM in your BIOS).
|
|
|
|
Some other things you should try when experiencing seemingly random,
|
|
"weird" problems:
|
|
|
|
1) make sure that you have enough swap space and that it is
|
|
enabled.
|
|
2) pass the "no-hlt" option to the kernel
|
|
3) switch on floating point emulation in the kernel and pass
|
|
the "no387" option to the kernel
|
|
4) pass the "floppy=nodma" option to the kernel
|
|
5) pass the "mem=4M" option to the kernel (thereby disabling
|
|
all but the first 4 MB of RAM)
|
|
6) make sure that the CPU is not over clocked.
|
|
7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/>
|
|
8) disable the cache from your BIOS settings
|
|
9) install a fan for the video card or exchange video RAM
|
|
10) install a better fan for the CPU
|
|
11) exchange RAM chips
|
|
12) exchange the motherboard.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called apm.
|
|
|
|
config APM_IGNORE_USER_SUSPEND
|
|
bool "Ignore USER SUSPEND"
|
|
depends on APM
|
|
help
|
|
This option will ignore USER SUSPEND requests. On machines with a
|
|
compliant APM BIOS, you want to say N. However, on the NEC Versa M
|
|
series notebooks, it is necessary to say Y because of a BIOS bug.
|
|
|
|
config APM_DO_ENABLE
|
|
bool "Enable PM at boot time"
|
|
depends on APM
|
|
---help---
|
|
Enable APM features at boot time. From page 36 of the APM BIOS
|
|
specification: "When disabled, the APM BIOS does not automatically
|
|
power manage devices, enter the Standby State, enter the Suspend
|
|
State, or take power saving steps in response to CPU Idle calls."
|
|
This driver will make CPU Idle calls when Linux is idle (unless this
|
|
feature is turned off -- see "Do CPU IDLE calls", below). This
|
|
should always save battery power, but more complicated APM features
|
|
will be dependent on your BIOS implementation. You may need to turn
|
|
this option off if your computer hangs at boot time when using APM
|
|
support, or if it beeps continuously instead of suspending. Turn
|
|
this off if you have a NEC UltraLite Versa 33/C or a Toshiba
|
|
T400CDT. This is off by default since most machines do fine without
|
|
this feature.
|
|
|
|
config APM_CPU_IDLE
|
|
bool "Make CPU Idle calls when idle"
|
|
depends on APM
|
|
help
|
|
Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
|
|
On some machines, this can activate improved power savings, such as
|
|
a slowed CPU clock rate, when the machine is idle. These idle calls
|
|
are made after the idle loop has run for some length of time (e.g.,
|
|
333 mS). On some machines, this will cause a hang at boot time or
|
|
whenever the CPU becomes idle. (On machines with more than one CPU,
|
|
this option does nothing.)
|
|
|
|
config APM_DISPLAY_BLANK
|
|
bool "Enable console blanking using APM"
|
|
depends on APM
|
|
help
|
|
Enable console blanking using the APM. Some laptops can use this to
|
|
turn off the LCD backlight when the screen blanker of the Linux
|
|
virtual console blanks the screen. Note that this is only used by
|
|
the virtual console screen blanker, and won't turn off the backlight
|
|
when using the X Window system. This also doesn't have anything to
|
|
do with your VESA-compliant power-saving monitor. Further, this
|
|
option doesn't work for all laptops -- it might not turn off your
|
|
backlight at all, or it might print a lot of errors to the console,
|
|
especially if you are using gpm.
|
|
|
|
config APM_RTC_IS_GMT
|
|
bool "RTC stores time in GMT"
|
|
depends on APM
|
|
help
|
|
Say Y here if your RTC (Real Time Clock a.k.a. hardware clock)
|
|
stores the time in GMT (Greenwich Mean Time). Say N if your RTC
|
|
stores localtime.
|
|
|
|
It is in fact recommended to store GMT in your RTC, because then you
|
|
don't have to worry about daylight savings time changes. The only
|
|
reason not to use GMT in your RTC is if you also run a broken OS
|
|
that doesn't understand GMT.
|
|
|
|
config APM_ALLOW_INTS
|
|
bool "Allow interrupts during APM BIOS calls"
|
|
depends on APM
|
|
help
|
|
Normally we disable external interrupts while we are making calls to
|
|
the APM BIOS as a measure to lessen the effects of a badly behaving
|
|
BIOS implementation. The BIOS should reenable interrupts if it
|
|
needs to. Unfortunately, some BIOSes do not -- especially those in
|
|
many of the newer IBM Thinkpads. If you experience hangs when you
|
|
suspend, try setting this to Y. Otherwise, say N.
|
|
|
|
config APM_REAL_MODE_POWER_OFF
|
|
bool "Use real mode APM BIOS call to power off"
|
|
depends on APM
|
|
help
|
|
Use real mode APM BIOS calls to switch off the computer. This is
|
|
a work-around for a number of buggy BIOSes. Switch this option on if
|
|
your computer crashes instead of powering off properly.
|
|
|
|
endmenu
|
|
|
|
source "arch/i386/kernel/cpu/cpufreq/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
|
|
|
|
config PCI
|
|
bool "PCI support" if !X86_VISWS
|
|
depends on !X86_VOYAGER
|
|
default y if X86_VISWS
|
|
help
|
|
Find out whether you have a PCI motherboard. PCI is the name of a
|
|
bus system, i.e. the way the CPU talks to the other stuff inside
|
|
your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
|
|
VESA. If you have PCI, say Y, otherwise N.
|
|
|
|
The PCI-HOWTO, available from
|
|
<http://www.tldp.org/docs.html#howto>, contains valuable
|
|
information about which PCI hardware does work under Linux and which
|
|
doesn't.
|
|
|
|
choice
|
|
prompt "PCI access mode"
|
|
depends on PCI && !X86_VISWS
|
|
default PCI_GOANY
|
|
---help---
|
|
On PCI systems, the BIOS can be used to detect the PCI devices and
|
|
determine their configuration. However, some old PCI motherboards
|
|
have BIOS bugs and may crash if this is done. Also, some embedded
|
|
PCI-based systems don't have any BIOS at all. Linux can also try to
|
|
detect the PCI hardware directly without using the BIOS.
|
|
|
|
With this option, you can specify how Linux should detect the
|
|
PCI devices. If you choose "BIOS", the BIOS will be used,
|
|
if you choose "Direct", the BIOS won't be used, and if you
|
|
choose "MMConfig", then PCI Express MMCONFIG will be used.
|
|
If you choose "Any", the kernel will try MMCONFIG, then the
|
|
direct access method and falls back to the BIOS if that doesn't
|
|
work. If unsure, go with the default, which is "Any".
|
|
|
|
config PCI_GOBIOS
|
|
bool "BIOS"
|
|
|
|
config PCI_GOMMCONFIG
|
|
bool "MMConfig"
|
|
|
|
config PCI_GODIRECT
|
|
bool "Direct"
|
|
|
|
config PCI_GOANY
|
|
bool "Any"
|
|
|
|
endchoice
|
|
|
|
config PCI_BIOS
|
|
bool
|
|
depends on !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
|
|
default y
|
|
|
|
config PCI_DIRECT
|
|
bool
|
|
depends on PCI && ((PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
|
|
default y
|
|
|
|
config PCI_MMCONFIG
|
|
bool
|
|
depends on PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
|
|
select ACPI_BOOT
|
|
default y
|
|
|
|
source "drivers/pci/pcie/Kconfig"
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
config ISA_DMA_API
|
|
bool
|
|
default y
|
|
|
|
config ISA
|
|
bool "ISA support"
|
|
depends on !(X86_VOYAGER || X86_VISWS)
|
|
help
|
|
Find out whether you have ISA slots on your motherboard. ISA is the
|
|
name of a bus system, i.e. the way the CPU talks to the other stuff
|
|
inside your box. Other bus systems are PCI, EISA, MicroChannel
|
|
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
|
|
newer boards don't support it. If you have ISA, say Y, otherwise N.
|
|
|
|
config EISA
|
|
bool "EISA support"
|
|
depends on ISA
|
|
---help---
|
|
The Extended Industry Standard Architecture (EISA) bus was
|
|
developed as an open alternative to the IBM MicroChannel bus.
|
|
|
|
The EISA bus provided some of the features of the IBM MicroChannel
|
|
bus while maintaining backward compatibility with cards made for
|
|
the older ISA bus. The EISA bus saw limited use between 1988 and
|
|
1995 when it was made obsolete by the PCI bus.
|
|
|
|
Say Y here if you are building a kernel for an EISA-based machine.
|
|
|
|
Otherwise, say N.
|
|
|
|
source "drivers/eisa/Kconfig"
|
|
|
|
config MCA
|
|
bool "MCA support" if !(X86_VISWS || X86_VOYAGER)
|
|
default y if X86_VOYAGER
|
|
help
|
|
MicroChannel Architecture is found in some IBM PS/2 machines and
|
|
laptops. It is a bus system similar to PCI or ISA. See
|
|
<file:Documentation/mca.txt> (and especially the web page given
|
|
there) before attempting to build an MCA bus kernel.
|
|
|
|
source "drivers/mca/Kconfig"
|
|
|
|
config SCx200
|
|
tristate "NatSemi SCx200 support"
|
|
depends on !X86_VOYAGER
|
|
help
|
|
This provides basic support for the National Semiconductor SCx200
|
|
processor. Right now this is just a driver for the GPIO pins.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
This support is also available as a module. If compiled as a
|
|
module, it will be called scx200.
|
|
|
|
config HOTPLUG_CPU
|
|
bool "Support for 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.
|
|
|
|
Say N.
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Executable file formats"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/i386/oprofile/Kconfig"
|
|
|
|
source "arch/i386/Kconfig.debug"
|
|
|
|
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 PC
|
|
bool
|
|
depends on X86 && !EMBEDDED
|
|
default y
|