x86: copy x86_64 specific Kconfig symbols to Kconfig.i386
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>hifive-unleashed-5.1
Sam Ravnborg
parent
d2cacbcfaa
commit
bc0120fdb4
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@ -353,11 +353,11 @@ config GEODE_MFGPT_TIMER
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MFGPTs have a better resolution and max interval than the
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generic PIT, and are suitable for use as high-res timers.
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endif # X86_32
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config K8_NB
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def_bool y
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depends on AGP_AMD64
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endif # X86_32
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depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
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source "drivers/pcmcia/Kconfig"
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@ -218,6 +218,14 @@ config X86_ES7000
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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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config X86_VSMP
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bool "Support for ScaleMP vSMP"
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depends on X86_64 && PCI
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help
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Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
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supposed to run on these EM64T-based machines. Only choose this option
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if you have one of these machines.
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endchoice
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config SCHED_NO_NO_OMIT_FRAME_POINTER
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@ -299,20 +307,87 @@ source "arch/x86/Kconfig.cpu"
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config HPET_TIMER
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bool
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prompt "HPET Timer Support" if X86_32
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default X86_64
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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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Use the IA-PC HPET (High Precision Event Timer) to manage
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time in preference to the PIT and RTC, if a HPET is
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present.
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HPET is the next generation timer replacing legacy 8254s.
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The HPET provides a stable time base on SMP
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systems, unlike the TSC, but it is more expensive to access,
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as it is off-chip. You can find the HPET spec at
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<http://www.intel.com/hardwaredesign/hpetspec.htm>.
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Choose N to continue using the legacy 8254 timer.
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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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# Mark as embedded because too many people got it wrong.
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# The code disables itself when not needed.
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config GART_IOMMU
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bool "GART IOMMU support" if EMBEDDED
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default y
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select SWIOTLB
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select AGP
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depends on X86_64 && PCI
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help
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Support for full DMA access of devices with 32bit memory access only
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on systems with more than 3GB. This is usually needed for USB,
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sound, many IDE/SATA chipsets and some other devices.
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Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
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based hardware IOMMU and a software bounce buffer based IOMMU used
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on Intel systems and as fallback.
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The code is only active when needed (enough memory and limited
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device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
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too.
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config CALGARY_IOMMU
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bool "IBM Calgary IOMMU support"
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select SWIOTLB
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depends on X86_64 && PCI && EXPERIMENTAL
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help
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Support for hardware IOMMUs in IBM's xSeries x366 and x460
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systems. Needed to run systems with more than 3GB of memory
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properly with 32-bit PCI devices that do not support DAC
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(Double Address Cycle). Calgary also supports bus level
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isolation, where all DMAs pass through the IOMMU. This
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prevents them from going anywhere except their intended
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destination. This catches hard-to-find kernel bugs and
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mis-behaving drivers and devices that do not use the DMA-API
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properly to set up their DMA buffers. The IOMMU can be
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turned off at boot time with the iommu=off parameter.
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Normally the kernel will make the right choice by itself.
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If unsure, say Y.
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config CALGARY_IOMMU_ENABLED_BY_DEFAULT
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bool "Should Calgary be enabled by default?"
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default y
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depends on CALGARY_IOMMU
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help
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Should Calgary be enabled by default? if you choose 'y', Calgary
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will be used (if it exists). If you choose 'n', Calgary will not be
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used even if it exists. If you choose 'n' and would like to use
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Calgary anyway, pass 'iommu=calgary' on the kernel command line.
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If unsure, say Y.
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# need this always selected by IOMMU for the VIA workaround
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config SWIOTLB
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bool
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help
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Support for software bounce buffers used on x86-64 systems
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which don't have a hardware IOMMU (e.g. the current generation
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of Intel's x86-64 CPUs). Using this PCI devices which can only
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access 32-bits of memory can be used on systems with more than
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3 GB of memory. If unsure, say Y.
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config NR_CPUS
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int "Maximum number of CPUs (2-255)"
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range 2 255
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@ -329,7 +404,7 @@ config NR_CPUS
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config SCHED_SMT
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bool "SMT (Hyperthreading) scheduler support"
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depends on X86_HT
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depends on (X86_64 && SMP) || (X86_32 && X86_HT)
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help
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SMT scheduler support improves the CPU scheduler's decision making
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when dealing with Intel Pentium 4 chips with HyperThreading at a
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@ -338,7 +413,7 @@ config SCHED_SMT
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on X86_HT
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depends on (X86_64 && SMP) || (X86_32 && X86_HT)
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default y
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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@ -374,12 +449,12 @@ config X86_UP_IOAPIC
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config X86_LOCAL_APIC
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bool
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depends on X86_32 && (X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH)
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depends on X86_64 || (X86_32 && (X86_UP_APIC || ((X86_VISWS || SMP) && !X86_VOYAGER) || X86_GENERICARCH))
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default y
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config X86_IO_APIC
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bool
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depends on X86_32 && (X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH)
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depends on X86_64 || (X86_32 && (X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH))
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default y
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config X86_VISWS_APIC
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@ -404,6 +479,22 @@ config X86_MCE
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to disable it. MCE support simply ignores non-MCE processors like
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the 386 and 486, so nearly everyone can say Y here.
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config X86_MCE_INTEL
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bool "Intel MCE features"
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depends on X86_64 && X86_MCE && X86_LOCAL_APIC
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default y
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help
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Additional support for intel specific MCE features such as
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the thermal monitor.
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config X86_MCE_AMD
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bool "AMD MCE features"
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depends on X86_64 && X86_MCE && X86_LOCAL_APIC
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default y
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help
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Additional support for AMD specific MCE features such as
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the DRAM Error Threshold.
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config X86_MCE_NONFATAL
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tristate "Check for non-fatal errors on AMD Athlon/Duron / Intel Pentium 4"
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depends on X86_32 && X86_MCE
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@ -651,19 +742,55 @@ config X86_PAE
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# Common NUMA Features
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config NUMA
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bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
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depends on X86_32 && SMP && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL
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depends on SMP
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depends on X86_64 || (X86_32 && HIGHMEM64G && (X86_NUMAQ || (X86_SUMMIT || X86_GENERICARCH) && ACPI) && EXPERIMENTAL)
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default n if X86_PC
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default y if (X86_NUMAQ || X86_SUMMIT)
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help
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NUMA support for i386. This is currently highly experimental
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and should be only used for kernel development. It might also
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cause boot failures.
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Enable NUMA (Non Uniform Memory Access) support.
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The kernel will try to allocate memory used by a CPU on the
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local memory controller of the CPU and add some more
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NUMA awareness to the kernel.
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For i386 this is currently highly experimental and should be only
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used for kernel development. It might also cause boot failures.
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For x86_64 this is recommended on all multiprocessor Opteron systems.
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If the system is EM64T, you should say N unless your system is
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EM64T NUMA.
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comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
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depends on X86_32 && X86_SUMMIT && (!HIGHMEM64G || !ACPI)
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config K8_NUMA
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bool "Old style AMD Opteron NUMA detection"
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depends on X86_64 && NUMA && PCI
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default y
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help
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Enable K8 NUMA node topology detection. You should say Y here if
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you have a multi processor AMD K8 system. This uses an old
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method to read the NUMA configuration directly from the builtin
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Northbridge of Opteron. It is recommended to use X86_64_ACPI_NUMA
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instead, which also takes priority if both are compiled in.
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config X86_64_ACPI_NUMA
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bool "ACPI NUMA detection"
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depends on X86_64 && NUMA && ACPI && PCI
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select ACPI_NUMA
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default y
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help
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Enable ACPI SRAT based node topology detection.
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config NUMA_EMU
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bool "NUMA emulation"
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depends on X86_64 && NUMA
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help
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Enable NUMA emulation. A flat machine will be split
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into virtual nodes when booted with "numa=fake=N", where N is the
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number of nodes. This is only useful for debugging.
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config NODES_SHIFT
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int
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default "6" if X86_64
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default "4" if X86_NUMAQ
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default "3"
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depends on NEED_MULTIPLE_NODES
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@ -690,7 +817,7 @@ config HAVE_ARCH_ALLOC_REMAP
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config ARCH_FLATMEM_ENABLE
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def_bool y
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depends on X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC
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depends on (X86_32 && ARCH_SELECT_MEMORY_MODEL && X86_PC) || (X86_64 && !NUMA)
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config ARCH_DISCONTIGMEM_ENABLE
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def_bool y
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@ -702,8 +829,9 @@ config ARCH_DISCONTIGMEM_DEFAULT
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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depends on (NUMA || (X86_PC && EXPERIMENTAL))
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depends on NUMA || (EXPERIMENTAL && (X86_PC || X86_64))
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select SPARSEMEM_STATIC if X86_32
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select SPARSEMEM_VMEMMAP_ENABLE if X86_64
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y
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@ -712,6 +840,10 @@ config ARCH_SELECT_MEMORY_MODEL
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config ARCH_POPULATES_NODE_MAP
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def_bool y
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config ARCH_MEMORY_PROBE
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def_bool X86_64
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depends on MEMORY_HOTPLUG
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source "mm/Kconfig"
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config HIGHPTE
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@ -833,6 +965,30 @@ config SECCOMP
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If unsure, say Y. Only embedded should say N here.
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config CC_STACKPROTECTOR
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bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
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depends on X86_64 && EXPERIMENTAL
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help
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This option turns on the -fstack-protector GCC feature. This
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feature puts, at the beginning of critical functions, a canary
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value on the stack just before the return address, and validates
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the value just before actually returning. Stack based buffer
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overflows (that need to overwrite this return address) now also
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overwrite the canary, which gets detected and the attack is then
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neutralized via a kernel panic.
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This feature requires gcc version 4.2 or above, or a distribution
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gcc with the feature backported. Older versions are automatically
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detected and for those versions, this configuration option is ignored.
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config CC_STACKPROTECTOR_ALL
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bool "Use stack-protector for all functions"
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depends on CC_STACKPROTECTOR
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help
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Normally, GCC only inserts the canary value protection for
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functions that use large-ish on-stack buffers. By enabling
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this option, GCC will be asked to do this for ALL functions.
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source kernel/Kconfig.hz
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config KEXEC
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@ -854,7 +1010,7 @@ config KEXEC
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config CRASH_DUMP
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bool "kernel crash dumps (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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depends on HIGHMEM
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depends on X86_64 || (X86_32 && HIGHMEM)
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help
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Generate crash dump after being started by kexec.
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This should be normally only set in special crash dump kernels
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@ -869,6 +1025,7 @@ config CRASH_DUMP
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config PHYSICAL_START
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hex "Physical address where the kernel is loaded" if (EMBEDDED || CRASH_DUMP)
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default "0x1000000" if X86_NUMAQ
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default "0x200000" if X86_64
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default "0x100000"
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help
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This gives the physical address where the kernel is loaded.
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@ -921,10 +1078,15 @@ config RELOCATABLE
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must live at a different physical address than the primary
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kernel.
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Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
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it has been loaded at and the compile time physical address
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(CONFIG_PHYSICAL_START) is ignored.
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config PHYSICAL_ALIGN
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hex
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prompt "Alignment value to which kernel should be aligned" if X86_32
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default "0x100000"
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default "0x100000" if X86_32
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default "0x200000" if X86_64
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range 0x2000 0x400000
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help
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This value puts the alignment restrictions on physical address
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@ -952,6 +1114,8 @@ config HOTPLUG_CPU
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Say Y here to experiment with turning CPUs off and on, and to
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enable suspend on SMP systems. CPUs can be controlled through
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/sys/devices/system/cpu.
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Say N if you want to disable CPU hotplug and don't need to
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suspend.
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config COMPAT_VDSO
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bool "Compat VDSO support"
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@ -970,8 +1134,19 @@ endmenu
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config ARCH_ENABLE_MEMORY_HOTPLUG
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def_bool y
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depends on HIGHMEM
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depends on X86_64 || (X86_32 && HIGHMEM)
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config MEMORY_HOTPLUG_RESERVE
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def_bool X86_64
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depends on (MEMORY_HOTPLUG && DISCONTIGMEM)
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config HAVE_ARCH_EARLY_PFN_TO_NID
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def_bool X86_64
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depends on NUMA
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config OUT_OF_LINE_PFN_TO_PAGE
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def_bool X86_64
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depends on DISCONTIGMEM
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#
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# Use the generic interrupt handling code in kernel/irq/:
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@ -996,7 +1171,7 @@ config X86_SMP
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config X86_HT
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bool
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depends on SMP && !(X86_VISWS || X86_VOYAGER)
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depends on SMP && !(X86_VISWS || X86_VOYAGER || MK8)
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default y
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config X86_BIOS_REBOOT
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