Lines Matching +full:sci +full:- +full:proc +full:- +full:ids
1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
27 # Options that are inherently 64-bit kernel only:
54 # ported to 32-bit as well. )
141 # Word-size accesses may read uninitialized data past the trailing \0
315 default "elf32-i386" if X86_32
316 default "elf64-x86-64" if X86_64
414 …default $(success,$(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) $(CLANG_FLAGS)) if 64…
415 default $(success,$(srctree)/scripts/gcc-x86_32-has-stack-protector.sh $(CC) $(CLANG_FLAGS))
419 the segment on 32-bit kernels.
424 bool "Symmetric multi-processing support"
430 If you say N here, the kernel will run on uni- and multiprocessor
445 See also <file:Documentation/arch/x86/i386/IO-APIC.rst>,
446 <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at
457 This allows 32-bit apic IDs (so it can support very large systems),
508 bool "Support for extended (non-PC) x86 platforms"
516 for the following (non-PC) 32 bit x86 platforms:
519 RDC R-321x SoC
521 STA2X11-based (e.g. Northville)
525 generic distribution kernel, say Y here - otherwise say N.
530 bool "Support for extended (non-PC) x86 platforms"
538 for the following (non-PC) 64 bit x86 platforms:
544 generic distribution kernel, say Y here - otherwise say N.
557 Adds support for Numascale NumaChip large-SMP systems. Needed to
570 supposed to run on these EM64T-based machines. Only choose this option
681 - BayTrail
682 - Braswell
683 - Quark
701 bool "RDC R-321x SoC"
707 This option is needed for RDC R-321x system-on-chip, also known
708 as R-8610-(G).
712 bool "Support non-standard 32-bit SMP architectures"
727 # On 32-bit this adds too big of NODES_SHIFT and we run out of page flags:
728 # On 32-bit SPARSEMEM adds too big of SECTIONS_WIDTH:
739 This adds support for boards based on the STA2X11 IO-Hub,
760 prompt "Single-depth WCHAN output"
763 Calculate simpler /proc/<PID>/wchan values. If this option
773 Say Y here to enable options for running Linux under various hyper-
795 bool "paravirt-ops debugging"
806 spinlock implementation with something virtualization-friendly
860 bool "Jailhouse non-root cell support"
864 This option allows to run Linux as guest in a Jailhouse non-root
874 a flexible, lightweight reference open-source hypervisor, built with
875 real-time and safety-criticality in mind. It is built for embedded
876 IOT with small footprint and real-time features. More details can be
880 bool "Intel TDX (Trust Domain Extensions) - Guest Support"
904 Use the IA-PC HPET (High Precision Event Timer) to manage
910 as it is off-chip. The interface used is documented
945 The GART supports full DMA access for devices with 32-bit access
954 32-bit limited device.
979 # The ranges are different on 32-bit and 64-bit kernels, depending on
1041 by sharing mid-level caches, last-level cache tags or internal
1049 prompt "Multi-core scheduler support"
1052 Multi-core scheduler support improves the CPU scheduler's decision
1053 making when dealing with multi-core CPU chips at a cost of slightly
1087 integrated interrupt controller in the CPU. If you have a single-CPU
1091 all. The local APIC supports CPU-generated self-interrupts (timer,
1096 bool "IO-APIC support on uniprocessors"
1099 An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
1100 SMP-capable replacement for PC-style interrupt controllers. Most
1103 If you have a single-CPU system with an IO-APIC, you can say Y here
1105 an IO-APIC, then the kernel will still run with no slowdown at all.
1126 entry in the chipset's IO-APIC is masked (as, e.g. the RT
1200 mode, which is an 80286-era approximation of 16-bit real mode.
1208 a 16-bit DOS program where 16-bit performance matters, vm86
1212 Note that any app that works on a 64-bit kernel is unlikely to
1213 need this option, as 64-bit kernels don't, and can't, support
1214 V8086 mode. This option is also unrelated to 16-bit protected
1215 mode and is not needed to run most 16-bit programs under Wine.
1227 bool "Enable support for 16-bit segments" if EXPERT
1231 This option is required by programs like Wine to run 16-bit
1234 plus 16K runtime memory on x86-64,
1307 CS5530A and CS5536 chipsets and the RDC R-321x SoC.
1329 tristate "/dev/cpu/*/msr - Model-specific register support"
1332 Model-Specific Registers (MSRs). It is a character device with
1334 MSR accesses are directed to a specific CPU on multi-processor
1338 tristate "/dev/cpu/*/cpuid - CPU information support"
1354 However, the address space of 32-bit x86 processors is only 4
1373 PAE implements 3-level paging on IA32 processors. PAE is fully
1389 Select this if you have a 32-bit processor and between 1 and 4
1397 Select this if you have a 32-bit processor and more than 4
1416 will also likely make your kernel incompatible with binary-only
1456 larger swapspace support for non-overcommit purposes. It
1461 bool "Enable 5-level page tables support"
1467 5-level paging enables access to larger address space:
1474 support 4- or 5-level paging.
1476 See Documentation/arch/x86/x86_64/5level-paging.rst for more
1526 Enable NUMA (Non-Uniform Memory Access) support.
1532 For 64-bit this is recommended if the system is Intel Core i7
1535 For 32-bit this is only needed if you boot a 32-bit
1536 kernel on a 64-bit NUMA platform.
1600 See Documentation/admin-guide/mm/memory-hotplug.rst for more information.
1616 tristate "Support non-standard NVDIMMs and ADR protected memory"
1623 Treat memory marked using the non-standard e820 type of 12 as used
1624 by the Intel Sandy Bridge-EP reference BIOS as protected memory.
1631 bool "Allocate 3rd-level pagetables from highmem"
1636 low memory. Setting this option will put user-space page table
1649 Documentation/admin-guide/kernel-parameters.rst to adjust this.
1657 BIOS-originated corruption always affects the same memory,
1691 emulation can be found in <file:arch/x86/math-emu/README>.
1703 a video (VGA) card on a PCI or AGP bus. Enabling write-combining
1707 /proc/mtrr file which may be used to manipulate your processor's
1717 The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
1719 write-combining. All of these processors are supported by this code
1746 int "MTRR cleanup enable value (0-1)"
1754 int "MTRR cleanup spare reg num (0-7)"
1773 spontaneous reboots) or a non-working video driver.
1793 specific cases in protected and virtual-8086 modes. Emulated
1800 # https://github.com/llvm/llvm-project/commit/e0b89df2e0f0130881bf6c39bf31d7f6aac00e0f
1801 # https://github.com/llvm/llvm-project/commit/dfcf69770bc522b9e411c66454934a37c1f35332
1802 def_bool ((CC_IS_GCC && $(cc-option, -fcf-protection=branch -mindirect-branch-register)) || \
1804 $(as-instr,endbr64)
1815 # https://github.com/llvm/llvm-project/commit/9d7001eba9c4cb311e03cd8cdc231f9e579f2d0f
1821 hardware support course-grain forward-edge Control Flow Integrity
1836 # Note: only available in 64-bit mode
1842 page-based protections, but without requiring modification of the
1845 For details, see Documentation/core-api/protection-keys.rst
1869 and =auto. See Documentation/admin-guide/kernel-parameters.txt for more
1879 TSX is disabled if possible - equals to tsx=off command line parameter.
1884 TSX is always enabled on TSX capable HW - equals the tsx=on command
1891 side channel attacks- equals the tsx=auto command line parameter.
1945 resultant kernel should continue to boot on existing non-EFI
1956 See Documentation/admin-guide/efi-stub.rst for more information.
1976 bool "EFI mixed-mode support"
1979 Enabling this feature allows a 64-bit kernel to be booted
1980 on a 32-bit firmware, provided that your CPU supports 64-bit
1983 Note that it is not possible to boot a mixed-mode enabled
1984 kernel via the EFI boot stub - a bootloader that supports
2006 Ranges can be set up to this value using comma-separated list.
2013 Export EFI runtime memory regions to /sys/firmware/efi/runtime-map.
2017 See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.
2080 command line boot parameter passed to the panic-ed
2081 kernel. Please take a look at Documentation/admin-guide/kdump/kdump.rst
2123 On 64-bit, the kernel physical and virtual addresses are
2130 On 32-bit, the kernel physical and virtual addresses are
2161 If bootloader loads the kernel at a non-aligned address and
2165 If bootloader loads the kernel at a non-aligned address and
2173 On 32-bit this value must be a multiple of 0x2000. On 64-bit
2223 to 64-bit linear addresses, allowing software to use of the
2235 prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
2239 presented with a 32-bit vDSO that is not mapped at the address
2249 dl_main: Assertion `(void *) ph->p_vaddr == _rtld_local._dl_sysinfo_dso' failed!
2252 option from 1 to 0, which turns off the 32-bit vDSO entirely.
2287 certain uses of the vsyscall area as an ASLR-bypassing
2302 bool "Built-in kernel command line"
2314 Systems with fully functional boot loaders (i.e. non-embedded)
2318 string "Built-in kernel command string"
2330 In most cases, the command line (whether built-in or provided
2335 bool "Built-in command line overrides boot loader arguments"
2339 command line, and use ONLY the built-in command line.
2348 Linux can allow user programs to install a per-process x86
2350 call. This is required to run 16-bit or segmented code such as
2355 context switches and increases the low-level kernel attack
2381 def_bool $(cc-option,-mharden-sls=all)
2384 def_bool $(cc-option,-mfunction-return=thunk-extern)
2387 def_bool $(cc-option,-fpatchable-function-entry=16,16)
2397 # Basically: FUNCTION_ALIGNMENT - 5*CFI_CLANG
2459 kernel-to-user data leaks by avoiding speculative indirect
2460 branches. Requires a compiler with -mindirect-branch=thunk-extern
2464 bool "Enable return-thunks"
2469 Compile the kernel with the return-thunks compiler option to guard
2470 against kernel-to-user data leaks by avoiding return speculation.
2471 Requires a compiler with -mfunction-return=thunk-extern
2489 SKL Return-Speculation-Buffer (RSB) underflow issue. The
2492 non-affected systems the overhead of this option is marginal as
2493 the call depth tracking is using run-time generated call thunks
2508 kernel command line with 'debug-callthunks'.
2533 Enable the SRSO mitigation needed on AMD Zen1-4 machines.
2536 bool "Mitigate Straight-Line-Speculation"
2541 Compile the kernel with straight-line-speculation options to guard
2573 See also <file:Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst>
2576 bool "Mitigate Spectre-BHB (Branch History Injection)"
2583 See <file:Documentation/admin-guide/hw-vuln/spectre.rst>
2612 reset after a RESUME operation, the /proc/apm device will provide
2613 battery status information, and user-space programs will receive
2623 and more information, read <file:Documentation/power/apm-acpi.rst>
2624 and the Battery Powered Linux mini-HOWTO, available from
2629 VESA-compliant "green" monitors.
2681 feature is turned off -- see "Do CPU IDLE calls", below). This
2710 do with your VESA-compliant power-saving monitor. Further, this
2711 option doesn't work for all laptops -- it might not turn off your
2721 needs to. Unfortunately, some BIOSes do not -- especially those in
2745 PCI-based systems don't have any BIOS at all. Linux can also try to
2766 bool "OLPC XO-1"
2778 # x86-64 doesn't support PCI BIOS access from long mode so always go direct.
2820 architectures -- if your target machine is modern, it probably does
2825 # x86_64 have no ISA slots, but can have ISA-style DMA.
2827 bool "ISA-style DMA support" if (X86_64 && EXPERT)
2830 Enables ISA-style DMA support for devices requiring such controllers.
2849 PCI-IDs of several on-chip devices, so its a good dependency
2855 tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
2859 This driver provides a clocksource built upon the on-chip
2860 27MHz high-resolution timer. Its also a workaround for
2861 NSC Geode SC-1100's buggy TSC, which loses time when the
2878 bool "OLPC XO-1 Power Management"
2881 Add support for poweroff and suspend of the OLPC XO-1 laptop.
2884 bool "OLPC XO-1 Real Time Clock"
2887 Add support for the XO-1 real time clock, which can be used as a
2891 bool "OLPC XO-1 SCI extras"
2896 Add support for SCI-based features of the OLPC XO-1 laptop:
2897 - EC-driven system wakeups
2898 - Power button
2899 - Ebook switch
2900 - Lid switch
2901 - AC adapter status updates
2902 - Battery status updates
2905 bool "OLPC XO-1.5 SCI extras"
2909 Add support for SCI-based features of the OLPC XO-1.5 laptop:
2910 - EC-driven system wakeups
2911 - AC adapter status updates
2912 - Battery status updates
2942 bool "Technologic Systems TS-5500 platform support"
2948 This option enables system support for the Technologic Systems TS-5500.
2967 Include code to run legacy 32-bit programs under a
2968 64-bit kernel. You should likely turn this on, unless you're
2969 100% sure that you don't have any 32-bit programs left.
2972 bool "x32 ABI for 64-bit mode"
2974 # llvm-objcopy does not convert x86_64 .note.gnu.property or
2978 depends on $(success,$(OBJCOPY) --version | head -n1 | grep -qv llvm)
2980 Include code to run binaries for the x32 native 32-bit ABI
2981 for 64-bit processors. An x32 process gets access to the
2982 full 64-bit register file and wide data path while leaving