diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-26 13:49:29 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-26 13:49:29 -0700 |
commit | 0e4bd10c9b7e9ed65132f5935328275deb760384 (patch) | |
tree | ff5bd68ba7d6eb960fe2f818aa7e30d542c954a4 /arch/x86 | |
parent | ec3b67c11df42362ccda81261d62829042f223f0 (diff) | |
parent | 208652d6b2cb9d7155ca8ff8691c8ef88c8250af (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/x86:
x86: kill the old i386 and x86_64 directories
x86: move i386 and x86_64 Kconfig files to x86 directory
kconfig: small code refactoring in kconfig Makefile
x86: unification of i386 and x86_64 Kconfig.debug
x86: move defconfig files for i386 and x86_64 to x86
x86: move i386 and x86_64 Makefiles to arch/x86
Diffstat (limited to 'arch/x86')
-rw-r--r-- | arch/x86/Kconfig.cpu | 372 | ||||
-rw-r--r-- | arch/x86/Kconfig.debug | 119 | ||||
-rw-r--r-- | arch/x86/Kconfig.i386 | 1321 | ||||
-rw-r--r-- | arch/x86/Kconfig.x86_64 | 844 | ||||
-rw-r--r-- | arch/x86/Makefile | 16 | ||||
-rw-r--r-- | arch/x86/Makefile_32 | 175 | ||||
-rw-r--r-- | arch/x86/Makefile_32.cpu | 47 | ||||
-rw-r--r-- | arch/x86/Makefile_64 | 144 | ||||
-rw-r--r-- | arch/x86/configs/i386_defconfig | 1466 | ||||
-rw-r--r-- | arch/x86/configs/x86_64_defconfig | 1388 |
10 files changed, 5892 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu new file mode 100644 index 00000000000..0e2adadf590 --- /dev/null +++ b/arch/x86/Kconfig.cpu @@ -0,0 +1,372 @@ +# Put here option for CPU selection and depending optimization +if !X86_ELAN + +choice + prompt "Processor family" + default M686 + +config M386 + bool "386" + depends on !UML + ---help--- + This is the processor type of your CPU. This information is used for + optimizing purposes. In order to compile a kernel that can run on + all x86 CPU types (albeit not optimally fast), you can specify + "386" here. + + The kernel will not necessarily run on earlier architectures than + the one you have chosen, e.g. a Pentium optimized kernel will run on + a PPro, but not necessarily on a i486. + + Here are the settings recommended for greatest speed: + - "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI + 486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels + will run on a 386 class machine. + - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or + SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S. + - "586" for generic Pentium CPUs lacking the TSC + (time stamp counter) register. + - "Pentium-Classic" for the Intel Pentium. + - "Pentium-MMX" for the Intel Pentium MMX. + - "Pentium-Pro" for the Intel Pentium Pro. + - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron. + - "Pentium-III" for the Intel Pentium III or Coppermine Celeron. + - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron. + - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D). + - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird). + - "Crusoe" for the Transmeta Crusoe series. + - "Efficeon" for the Transmeta Efficeon series. + - "Winchip-C6" for original IDT Winchip. + - "Winchip-2" for IDT Winchip 2. + - "Winchip-2A" for IDT Winchips with 3dNow! capabilities. + - "GeodeGX1" for Geode GX1 (Cyrix MediaGX). + - "Geode GX/LX" For AMD Geode GX and LX processors. + - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3. + - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above). + - "VIA C7" for VIA C7. + + If you don't know what to do, choose "386". + +config M486 + bool "486" + help + Select this for a 486 series processor, either Intel or one of the + compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX, + DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or + U5S. + +config M586 + bool "586/K5/5x86/6x86/6x86MX" + help + Select this for an 586 or 686 series processor such as the AMD K5, + the Cyrix 5x86, 6x86 and 6x86MX. This choice does not + assume the RDTSC (Read Time Stamp Counter) instruction. + +config M586TSC + bool "Pentium-Classic" + help + Select this for a Pentium Classic processor with the RDTSC (Read + Time Stamp Counter) instruction for benchmarking. + +config M586MMX + bool "Pentium-MMX" + help + Select this for a Pentium with the MMX graphics/multimedia + extended instructions. + +config M686 + bool "Pentium-Pro" + help + Select this for Intel Pentium Pro chips. This enables the use of + Pentium Pro extended instructions, and disables the init-time guard + against the f00f bug found in earlier Pentiums. + +config MPENTIUMII + bool "Pentium-II/Celeron(pre-Coppermine)" + help + Select this for Intel chips based on the Pentium-II and + pre-Coppermine Celeron core. This option enables an unaligned + copy optimization, compiles the kernel with optimization flags + tailored for the chip, and applies any applicable Pentium Pro + optimizations. + +config MPENTIUMIII + bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon" + help + Select this for Intel chips based on the Pentium-III and + Celeron-Coppermine core. This option enables use of some + extended prefetch instructions in addition to the Pentium II + extensions. + +config MPENTIUMM + bool "Pentium M" + help + Select this for Intel Pentium M (not Pentium-4 M) + notebook chips. + +config MCORE2 + bool "Core 2/newer Xeon" + help + Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx) + CPUs. You can distinguish newer from older Xeons by the CPU family + in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo) + +config MPENTIUM4 + bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon" + help + Select this for Intel Pentium 4 chips. This includes the + Pentium 4, Pentium D, P4-based Celeron and Xeon, and + Pentium-4 M (not Pentium M) chips. This option enables compile + flags optimized for the chip, uses the correct cache line size, and + applies any applicable optimizations. + + CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 ) + + Select this for: + Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename: + -Willamette + -Northwood + -Mobile Pentium 4 + -Mobile Pentium 4 M + -Extreme Edition (Gallatin) + -Prescott + -Prescott 2M + -Cedar Mill + -Presler + -Smithfiled + Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename: + -Foster + -Prestonia + -Gallatin + -Nocona + -Irwindale + -Cranford + -Potomac + -Paxville + -Dempsey + + +config MK6 + bool "K6/K6-II/K6-III" + help + Select this for an AMD K6-family processor. Enables use of + some extended instructions, and passes appropriate optimization + flags to GCC. + +config MK7 + bool "Athlon/Duron/K7" + help + Select this for an AMD Athlon K7-family processor. Enables use of + some extended instructions, and passes appropriate optimization + flags to GCC. + +config MK8 + bool "Opteron/Athlon64/Hammer/K8" + help + Select this for an AMD Opteron or Athlon64 Hammer-family processor. Enables + use of some extended instructions, and passes appropriate optimization + flags to GCC. + +config MCRUSOE + bool "Crusoe" + help + Select this for a Transmeta Crusoe processor. Treats the processor + like a 586 with TSC, and sets some GCC optimization flags (like a + Pentium Pro with no alignment requirements). + +config MEFFICEON + bool "Efficeon" + help + Select this for a Transmeta Efficeon processor. + +config MWINCHIPC6 + bool "Winchip-C6" + help + Select this for an IDT Winchip C6 chip. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. + +config MWINCHIP2 + bool "Winchip-2" + help + Select this for an IDT Winchip-2. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. + +config MWINCHIP3D + bool "Winchip-2A/Winchip-3" + help + Select this for an IDT Winchip-2A or 3. Linux and GCC + treat this chip as a 586TSC with some extended instructions + and alignment requirements. Also enable out of order memory + stores for this CPU, which can increase performance of some + operations. + +config MGEODEGX1 + bool "GeodeGX1" + help + Select this for a Geode GX1 (Cyrix MediaGX) chip. + +config MGEODE_LX + bool "Geode GX/LX" + help + Select this for AMD Geode GX and LX processors. + +config MCYRIXIII + bool "CyrixIII/VIA-C3" + help + Select this for a Cyrix III or C3 chip. Presently Linux and GCC + treat this chip as a generic 586. Whilst the CPU is 686 class, + it lacks the cmov extension which gcc assumes is present when + generating 686 code. + Note that Nehemiah (Model 9) and above will not boot with this + kernel due to them lacking the 3DNow! instructions used in earlier + incarnations of the CPU. + +config MVIAC3_2 + bool "VIA C3-2 (Nehemiah)" + help + Select this for a VIA C3 "Nehemiah". Selecting this enables usage + of SSE and tells gcc to treat the CPU as a 686. + Note, this kernel will not boot on older (pre model 9) C3s. + +config MVIAC7 + bool "VIA C7" + help + Select this for a VIA C7. Selecting this uses the correct cache + shift and tells gcc to treat the CPU as a 686. + +endchoice + +config X86_GENERIC + bool "Generic x86 support" + help + Instead of just including optimizations for the selected + x86 variant (e.g. PII, Crusoe or Athlon), include some more + generic optimizations as well. This will make the kernel + perform better on x86 CPUs other than that selected. + + This is really intended for distributors who need more + generic optimizations. + +endif + +# +# Define implied options from the CPU selection here +# +config X86_CMPXCHG + bool + depends on !M386 + default y + +config X86_L1_CACHE_SHIFT + int + default "7" if MPENTIUM4 || X86_GENERIC + default "4" if X86_ELAN || M486 || M386 || MGEODEGX1 + default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX + default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MVIAC7 + +config X86_XADD + bool + depends on !M386 + default y + +config RWSEM_GENERIC_SPINLOCK + bool + depends on !X86_XADD + default y + +config RWSEM_XCHGADD_ALGORITHM + bool + depends on X86_XADD + default y + +config ARCH_HAS_ILOG2_U32 + bool + default n + +config ARCH_HAS_ILOG2_U64 + bool + default n + +config GENERIC_CALIBRATE_DELAY + bool + default y + +config X86_PPRO_FENCE + bool + depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1 + default y + +config X86_F00F_BUG + bool + depends on M586MMX || M586TSC || M586 || M486 || M386 + default y + +config X86_WP_WORKS_OK + bool + depends on !M386 + default y + +config X86_INVLPG + bool + depends on !M386 + default y + +config X86_BSWAP + bool + depends on !M386 + default y + +config X86_POPAD_OK + bool + depends on !M386 + default y + +config X86_ALIGNMENT_16 + bool + depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1 + default y + +config X86_GOOD_APIC + bool + depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 + default y + +config X86_INTEL_USERCOPY + bool + depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 + default y + +config X86_USE_PPRO_CHECKSUM + bool + depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2 + default y + +config X86_USE_3DNOW + bool + depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML + default y + +config X86_OOSTORE + bool + depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR + 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 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ + default y + +# this should be set for all -march=.. options where the compiler +# generates cmov. +config X86_CMOV + bool + depends on (MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7) + default y + +config X86_MINIMUM_CPU_FAMILY + int + default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK + default "3" + diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug new file mode 100644 index 00000000000..970b2defe7d --- /dev/null +++ b/arch/x86/Kconfig.debug @@ -0,0 +1,119 @@ +menu "Kernel hacking" + +config TRACE_IRQFLAGS_SUPPORT + def_bool y + +source "lib/Kconfig.debug" + +config EARLY_PRINTK + bool "Early printk" if EMBEDDED && DEBUG_KERNEL + default y + depends on X86_32 + help + Write kernel log output directly into the VGA buffer or to a serial + port. + + This is useful for kernel debugging when your machine crashes very + early before the console code is initialized. For normal operation + it is not recommended because it looks ugly and doesn't cooperate + with klogd/syslogd or the X server. You should normally N here, + unless you want to debug such a crash. + +config DEBUG_STACKOVERFLOW + bool "Check for stack overflows" + depends on DEBUG_KERNEL + help + This option will cause messages to be printed if free stack space + drops below a certain limit. + +config DEBUG_STACK_USAGE + bool "Stack utilization instrumentation" + depends on DEBUG_KERNEL + help + Enables the display of the minimum amount of free stack which each + task has ever had available in the sysrq-T and sysrq-P debug output. + + This option will slow down process creation somewhat. + +comment "Page alloc debug is incompatible with Software Suspend on i386" + depends on DEBUG_KERNEL && HIBERNATION + depends on X86_32 + +config DEBUG_PAGEALLOC + bool "Debug page memory allocations" + depends on DEBUG_KERNEL && !HIBERNATION && !HUGETLBFS + depends on X86_32 + help + Unmap pages from the kernel linear mapping after free_pages(). + This results in a large slowdown, but helps to find certain types + of memory corruptions. + +config DEBUG_RODATA + bool "Write protect kernel read-only data structures" + depends on DEBUG_KERNEL + help + Mark the kernel read-only data as write-protected in the pagetables, + in order to catch accidental (and incorrect) writes to such const + data. This option may have a slight performance impact because a + portion of the kernel code won't be covered by a 2MB TLB anymore. + If in doubt, say "N". + +config 4KSTACKS + bool "Use 4Kb for kernel stacks instead of 8Kb" + depends on DEBUG_KERNEL + depends on X86_32 + help + If you say Y here the kernel will use a 4Kb stacksize for the + kernel stack attached to each process/thread. This facilitates + running more threads on a system and also reduces the pressure + on the VM subsystem for higher order allocations. This option + will also use IRQ stacks to compensate for the reduced stackspace. + +config X86_FIND_SMP_CONFIG + def_bool y + depends on X86_LOCAL_APIC || X86_VOYAGER + depends on X86_32 + +config X86_MPPARSE + def_bool y + depends on X86_LOCAL_APIC && !X86_VISWS + depends on X86_32 + +config DOUBLEFAULT + default y + bool "Enable doublefault exception handler" if EMBEDDED + depends on X86_32 + help + This option allows trapping of rare doublefault exceptions that + would otherwise cause a system to silently reboot. Disabling this + option saves about 4k and might cause you much additional grey + hair. + +config IOMMU_DEBUG + bool "Enable IOMMU debugging" + depends on IOMMU && DEBUG_KERNEL + depends on X86_64 + help + Force the IOMMU to on even when you have less than 4GB of + memory and add debugging code. On overflow always panic. And + allow to enable IOMMU leak tracing. Can be disabled at boot + time with iommu=noforce. This will also enable scatter gather + list merging. Currently not recommended for production + code. When you use it make sure you have a big enough + IOMMU/AGP aperture. Most of the options enabled by this can + be set more finegrained using the iommu= command line + options. See Documentation/x86_64/boot-options.txt for more + details. + +config IOMMU_LEAK + bool "IOMMU leak tracing" + depends on DEBUG_KERNEL + depends on IOMMU_DEBUG + help + Add a simple leak tracer to the IOMMU code. This is useful when you + are debugging a buggy device driver that leaks IOMMU mappings. + +#config X86_REMOTE_DEBUG +# bool "kgdb debugging stub" + +endmenu diff --git a/arch/x86/Kconfig.i386 b/arch/x86/Kconfig.i386 new file mode 100644 index 00000000000..7331efe891a --- /dev/null +++ b/arch/x86/Kconfig.i386 @@ -0,0 +1,1321 @@ +# +# For a description of the syntax of this configuration file, +# see Documentation/kbuild/kconfig-language.txt. +# + +mainmenu "Linux Kernel Configuration" + +config X86_32 + bool + default y + help + This is Linux's home port. Linux was originally native to the Intel + 386, and runs on all the later x86 processors including the Intel + 486, 586, Pentiums, and various instruction-set-compatible chips by + AMD, Cyrix, and others. + +config GENERIC_TIME + bool + default y + +config GENERIC_CMOS_UPDATE + bool + default y + +config CLOCKSOURCE_WATCHDOG + bool + default y + +config GENERIC_CLOCKEVENTS + bool + default y + +config GENERIC_CLOCKEVENTS_BROADCAST + bool + default y + depends on X86_LOCAL_APIC + +config LOCKDEP_SUPPORT + bool + default y + +config STACKTRACE_SUPPORT + bool + default y + +config SEMAPHORE_SLEEPERS + bool + default y + +config X86 + bool + default y + +config MMU + bool + default y + +config ZONE_DMA + bool + default y + +config QUICKLIST + bool + default y + +config SBUS + bool + +config GENERIC_ISA_DMA + bool + default y + +config GENERIC_IOMAP + bool + default y + +config GENERIC_BUG + bool + default y + depends on BUG + +config GENERIC_HWEIGHT + bool + default y + +config ARCH_MAY_HAVE_PC_FDC + bool + default y + +config DMI + bool + default y + +source "init/Kconfig" + +menu "Processor type and features" + +source "kernel/time/Kconfig" + +config SMP + bool "Symmetric multi-processing support" + ---help--- + This enables support for systems with more than one CPU. If you have + a system with only one CPU, like most personal computers, say N. If + you have a system with more than one CPU, say Y. + + If you say N here, the kernel will run on single and multiprocessor + machines, but will use only one CPU of a multiprocessor machine. If + you say Y here, the kernel will run on many, but not all, + singleprocessor machines. On a singleprocessor machine, the kernel + will run faster if you say N here. + + Note that if you say Y here and choose architecture "586" or + "Pentium" under "Processor family", the kernel will not work on 486 + architectures. Similarly, multiprocessor kernels for the "PPro" + architecture may not work on all Pentium based boards. + + People using multiprocessor machines who say Y here should also say + Y to "Enhanced Real Time Clock Support", below. The "Advanced Power + Management" code will be disabled if you say Y here. + + See also the <file:Documentation/smp.txt>, + <file:Documentation/i386/IO-APIC.txt>, + <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at + <http://www.tldp.org/docs.html#howto>. + + If you don't know what to do here, say N. + +choice + prompt "Subarchitecture Type" + default X86_PC + +config X86_PC + bool "PC-compatible" + help + Choose this option if your computer is a standard PC or compatible. + +config X86_ELAN + bool "AMD Elan" + help + Select this for an AMD Elan processor. + + Do not use this option for K6/Athlon/Opteron processors! + + If unsure, choose "PC-compatible" instead. + +config X86_VOYAGER + bool "Voyager (NCR)" + select SMP if !BROKEN + help + Voyager is an MCA-based 32-way capable SMP architecture proprietary + to NCR Corp. Machine classes 345x/35xx/4100/51xx are Voyager-based. + + *** WARNING *** + + If you do not specifically know you have a Voyager based machine, + say N here, otherwise the kernel you build will not be bootable. + +config X86_NUMAQ + bool "NUMAQ (IBM/Sequent)" + select SMP + select NUMA + help + This option is used for getting Linux to run on a (IBM/Sequent) NUMA + multiquad box. This changes the way that processors are bootstrapped, + and uses Clustered Logical APIC addressing mode instead of Flat Logical. + You will need a new lynxer.elf file to flash your firmware with - send + email to <Martin.Bligh@us.ibm.com>. + +config X86_SUMMIT + bool "Summit/EXA (IBM x440)" + depends on SMP + help + This option is needed for IBM systems that use the Summit/EXA chipset. + In particular, it is needed for the x440. + + If you don't have one of these computers, you should say N here. + If you want to build a NUMA kernel, you must select ACPI. + +config X86_BIGSMP + bool "Support for other sub-arch SMP systems with more than 8 CPUs" + depends on SMP + help + This option is needed for the systems that have more than 8 CPUs + and if the system is not of any sub-arch type above. + + If you don't have such a system, you should say N here. + +config X86_VISWS + bool "SGI 320/540 (Visual Workstation)" + help + The SGI Visual Workstation series is an IA32-based workstation + based on SGI systems chips with some legacy PC hardware attached. + + Say Y here to create a kernel to run on the SGI 320 or 540. + + A kernel compiled for the Visual Workstation will not run on PCs + and vice versa. See <file:Documentation/sgi-visws.txt> for details. + +config X86_GENERICARCH + bool "Generic architecture (Summit, bigsmp, ES7000, default)" + help + This option compiles in the Summit, bigsmp, ES7000, default subarchitectures. + It is intended for a generic binary kernel. + If you want a NUMA kernel, select ACPI. We need SRAT for NUMA. + +config X86_ES7000 + bool "Support for Unisys ES7000 IA32 series" + depends on SMP + help + Support for Unisys ES7000 systems. Say 'Y' here if this kernel is + supposed to run on an IA32-based Unisys ES7000 system. + Only choose this option if you have such a system, otherwise you + should say N here. + +endchoice + +config SCHED_NO_NO_OMIT_FRAME_POINTER + bool "Single-depth WCHAN output" + default y + help + Calculate simpler /proc/<PID>/wchan values. If this option + is disabled then wchan values will recurse back to the + caller function. This provides more accurate wchan values, + at the expense of slightly more scheduling overhead. + + If in doubt, say "Y". + +config PARAVIRT + bool + depends on !(X86_VISWS || X86_VOYAGER) + help + This changes the kernel so it can modify itself when it is run + under a hypervisor, potentially improving performance significantly + over full virtualization. However, when run without a hypervisor + the kernel is theoretically slower and slightly larger. + +menuconfig PARAVIRT_GUEST + bool "Paravirtualized guest support" + help + Say Y here to get to see options related to running Linux under + various hypervisors. This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if PARAVIRT_GUEST + +source "arch/x86/xen/Kconfig" + +config VMI + bool "VMI Guest support" + select PARAVIRT + depends on !(X86_VISWS || X86_VOYAGER) + help + VMI provides a paravirtualized interface to the VMware ESX server + (it could be used by other hypervisors in theory too, but is not + at the moment), by linking the kernel to a GPL-ed ROM module + provided by the hypervisor. + +source "arch/x86/lguest/Kconfig" + +endif + +config ACPI_SRAT + bool + default y + depends on ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH) + select ACPI_NUMA + +config HAVE_ARCH_PARSE_SRAT + bool + default y + depends on ACPI_SRAT + +config X86_SUMMIT_NUMA + bool + default y + depends on NUMA && (X86_SUMMIT || X86_GENERICARCH) + +config X86_CYCLONE_TIMER + bool + default y + depends on X86_SUMMIT || X86_GENERICARCH + +config ES7000_CLUSTERED_APIC + bool + default y + depends on SMP && X86_ES7000 && MPENTIUMIII + +source "arch/x86/Kconfig.cpu" + +config HPET_TIMER + bool "HPET Timer Support" + help + This enables the use of the HPET for the kernel's internal timer. + HPET is the next generation timer replacing legacy 8254s. + You can safely choose Y here. However, HPET will only be + activated if the platform and the BIOS support this feature. + Otherwise the 8254 will be used for timing services. + + Choose N to continue using the legacy 8254 timer. + +config HPET_EMULATE_RTC + bool + depends on HPET_TIMER && RTC=y + default y + +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 X86_HT + help + SMT scheduler support improves the CPU scheduler's decision making + when dealing with Intel Pentium 4 chips with HyperThreading at a + cost of slightly increased overhead in some places. If unsure say + N here. + +config SCHED_MC + bool "Multi-core scheduler support" + depends on X86_HT + default y + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. If unsure say N here. + +source "kernel/Kconfig.preempt" + +config X86_UP_APIC + bool "Local APIC support on uniprocessors" + depends on !SMP && !(X86_VISWS || X86_VOYAGER || X86_GENERICARCH) + help + A local APIC (Advanced Programmable Interrupt Controller) is an + integrated interrupt controller in the CPU. If you have a single-CPU + 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) || X86_GENERICARCH + default y + +config X86_IO_APIC + bool + depends on X86_UP_IOAPIC || (SMP && !(X86_VISWS || X86_VOYAGER)) || X86_GENERICARCH + default y + +config X86_VISWS_APIC + bool + depends on X86_VISWS + 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 + 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 VM86 + default y + bool "Enable VM86 support" if EMBEDDED + help + This option is required by programs like DOSEMU to run 16-bit legacy + code on X86 processors. It also may be needed by software like + XFree86 to initialize some video cards via BIOS. Disabling this + option saves about 6k. + +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 machines using + CS5530A and CS5536 chipsets. + + 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" + select FW_LOADER + ---help--- + If you say Y here, 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 MICROCODE_OLD_INTERFACE + bool + depends on MICROCODE + default y + +config X86_MSR + tristate "/dev/cpu/*/msr - Model-specific register support" + help + This device gives privileged processes access to the x86 + Model-Specific Registers (MSRs). It is a character device with + major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr. + MSR accesses are directed to a specific CPU on multi-processor + systems. + +config X86_CPUID + tristate "/dev/cpu/*/cpuid - CPU information support" + help + This device gives processes access to the x86 CPUID instruction to + be executed on a specific processor. It is a character device + with major 203 and minors 0 to 31 for |