Lines Matching +full:sci +full:- +full:pm +full:- +full:domain
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:
53 # ported to 32-bit as well. )
134 # Word-size accesses may read uninitialized data past the trailing \0
302 default "elf32-i386" if X86_32
303 default "elf64-x86-64" if X86_64
406 …default $(success,$(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(CC) $(CLANG_FLAGS)) if 64…
407 default $(success,$(srctree)/scripts/gcc-x86_32-has-stack-protector.sh $(CC) $(CLANG_FLAGS))
411 the segment on 32-bit kernels.
416 bool "Symmetric multi-processing support"
422 If you say N here, the kernel will run on uni- and multiprocessor
437 See also <file:Documentation/x86/i386/IO-APIC.rst>,
438 <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at
444 bool "Processor feature human-readable names" if EMBEDDED
460 This allows 32-bit apic IDs (so it can support very large systems),
511 bool "Support for extended (non-PC) x86 platforms"
519 for the following (non-PC) 32 bit x86 platforms:
522 RDC R-321x SoC
524 STA2X11-based (e.g. Northville)
528 generic distribution kernel, say Y here - otherwise say N.
533 bool "Support for extended (non-PC) x86 platforms"
541 for the following (non-PC) 64 bit x86 platforms:
547 generic distribution kernel, say Y here - otherwise say N.
560 Adds support for Numascale NumaChip large-SMP systems. Needed to
573 supposed to run on these EM64T-based machines. Only choose this option
684 - BayTrail
685 - Braswell
686 - Quark
704 bool "RDC R-321x SoC"
710 This option is needed for RDC R-321x system-on-chip, also known
711 as R-8610-(G).
715 bool "Support non-standard 32-bit SMP architectures"
730 # On 32-bit this adds too big of NODES_SHIFT and we run out of page flags:
731 # On 32-bit SPARSEMEM adds too big of SECTIONS_WIDTH:
742 This adds support for boards based on the STA2X11 IO-Hub,
763 prompt "Single-depth WCHAN output"
776 Say Y here to enable options for running Linux under various hyper-
798 bool "paravirt-ops debugging"
809 spinlock implementation with something virtualization-friendly
863 bool "Jailhouse non-root cell support"
867 This option allows to run Linux as guest in a Jailhouse non-root
877 a flexible, lightweight reference open-source hypervisor, built with
878 real-time and safety-criticality in mind. It is built for embedded
879 IOT with small footprint and real-time features. More details can be
883 bool "Intel TDX (Trust Domain Extensions) - Guest Support"
905 Use the IA-PC HPET (High Precision Event Timer) to manage
911 as it is off-chip. The interface used is documented
946 The GART supports full DMA access for devices with 32-bit access
955 32-bit limited device.
980 # The ranges are different on 32-bit and 64-bit kernels, depending on
1042 by sharing mid-level caches, last-level cache tags or internal
1050 prompt "Multi-core scheduler support"
1053 Multi-core scheduler support improves the CPU scheduler's decision
1054 making when dealing with multi-core CPU chips at a cost of slightly
1088 integrated interrupt controller in the CPU. If you have a single-CPU
1092 all. The local APIC supports CPU-generated self-interrupts (timer,
1097 bool "IO-APIC support on uniprocessors"
1100 An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
1101 SMP-capable replacement for PC-style interrupt controllers. Most
1104 If you have a single-CPU system with an IO-APIC, you can say Y here
1106 an IO-APIC, then the kernel will still run with no slowdown at all.
1128 entry in the chipset's IO-APIC is masked (as, e.g. the RT
1202 mode, which is an 80286-era approximation of 16-bit real mode.
1210 a 16-bit DOS program where 16-bit performance matters, vm86
1214 Note that any app that works on a 64-bit kernel is unlikely to
1215 need this option, as 64-bit kernels don't, and can't, support
1216 V8086 mode. This option is also unrelated to 16-bit protected
1217 mode and is not needed to run most 16-bit programs under Wine.
1229 bool "Enable support for 16-bit segments" if EXPERT
1233 This option is required by programs like Wine to run 16-bit
1236 plus 16K runtime memory on x86-64,
1309 CS5530A and CS5536 chipsets and the RDC R-321x SoC.
1333 need to add the vendor-supplied microcode to the CONFIG_EXTRA_FIRMWARE
1367 tristate "/dev/cpu/*/msr - Model-specific register support"
1370 Model-Specific Registers (MSRs). It is a character device with
1372 MSR accesses are directed to a specific CPU on multi-processor
1376 tristate "/dev/cpu/*/cpuid - CPU information support"
1392 However, the address space of 32-bit x86 processors is only 4
1411 PAE implements 3-level paging on IA32 processors. PAE is fully
1427 Select this if you have a 32-bit processor and between 1 and 4
1435 Select this if you have a 32-bit processor and more than 4
1454 will also likely make your kernel incompatible with binary-only
1494 larger swapspace support for non-overcommit purposes. It
1499 bool "Enable 5-level page tables support"
1505 5-level paging enables access to larger address space:
1512 support 4- or 5-level paging.
1514 See Documentation/x86/x86_64/5level-paging.rst for more
1575 Enable NUMA (Non-Uniform Memory Access) support.
1581 For 64-bit this is recommended if the system is Intel Core i7
1584 For 32-bit this is only needed if you boot a 32-bit
1585 kernel on a 64-bit NUMA platform.
1649 See Documentation/admin-guide/mm/memory-hotplug.rst for more information.
1665 tristate "Support non-standard NVDIMMs and ADR protected memory"
1672 Treat memory marked using the non-standard e820 type of 12 as used
1673 by the Intel Sandy Bridge-EP reference BIOS as protected memory.
1680 bool "Allocate 3rd-level pagetables from highmem"
1685 low memory. Setting this option will put user-space page table
1698 Documentation/admin-guide/kernel-parameters.rst to adjust this.
1706 BIOS-originated corruption always affects the same memory,
1740 emulation can be found in <file:arch/x86/math-emu/README>.
1752 a video (VGA) card on a PCI or AGP bus. Enabling write-combining
1766 The AMD K6-2 (stepping 8 and above) and K6-3 processors have two
1768 write-combining. All of these processors are supported by this code
1795 int "MTRR cleanup enable value (0-1)"
1803 int "MTRR cleanup spare reg num (0-7)"
1822 spontaneous reboots) or a non-working video driver.
1842 specific cases in protected and virtual-8086 modes. Emulated
1849 # https://github.com/llvm/llvm-project/commit/e0b89df2e0f0130881bf6c39bf31d7f6aac00e0f
1850 # https://github.com/llvm/llvm-project/commit/dfcf69770bc522b9e411c66454934a37c1f35332
1851 def_bool ((CC_IS_GCC && $(cc-option, -fcf-protection=branch -mindirect-branch-register)) || \
1853 $(as-instr,endbr64)
1859 # https://github.com/llvm/llvm-project/commit/9d7001eba9c4cb311e03cd8cdc231f9e579f2d0f
1864 hardware support course-grain forward-edge Control Flow Integrity
1879 # Note: only available in 64-bit mode
1885 page-based protections, but without requiring modification of the
1888 For details, see Documentation/core-api/protection-keys.rst
1912 and =auto. See Documentation/admin-guide/kernel-parameters.txt for more
1922 TSX is disabled if possible - equals to tsx=off command line parameter.
1927 TSX is always enabled on TSX capable HW - equals the tsx=on command
1934 side channel attacks- equals the tsx=auto command line parameter.
1970 resultant kernel should continue to boot on existing non-EFI
1981 See Documentation/admin-guide/efi-stub.rst for more information.
1984 bool "EFI mixed-mode support"
1987 Enabling this feature allows a 64-bit kernel to be booted
1988 on a 32-bit firmware, provided that your CPU supports 64-bit
1991 Note that it is not possible to boot a mixed-mode enabled
1992 kernel via the EFI boot stub - a bootloader that supports
2067 which are loaded in the main kernel with kexec-tools into
2073 For more details see Documentation/admin-guide/kdump/kdump.rst
2109 command line boot parameter passed to the panic-ed
2110 kernel. Please take a look at Documentation/admin-guide/kdump/kdump.rst
2152 On 64-bit, the kernel physical and virtual addresses are
2159 On 32-bit, the kernel physical and virtual addresses are
2190 If bootloader loads the kernel at a non-aligned address and
2194 If bootloader loads the kernel at a non-aligned address and
2202 On 32-bit this value must be a multiple of 0x2000. On 64-bit
2295 prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
2299 presented with a 32-bit vDSO that is not mapped at the address
2309 dl_main: Assertion `(void *) ph->p_vaddr == _rtld_local._dl_sysinfo_dso' failed!
2312 option from 1 to 0, which turns off the 32-bit vDSO entirely.
2347 certain uses of the vsyscall area as an ASLR-bypassing
2362 bool "Built-in kernel command line"
2374 Systems with fully functional boot loaders (i.e. non-embedded)
2378 string "Built-in kernel command string"
2390 In most cases, the command line (whether built-in or provided
2395 bool "Built-in command line overrides boot loader arguments"
2399 command line, and use ONLY the built-in command line.
2408 Linux can allow user programs to install a per-process x86
2410 call. This is required to run 16-bit or segmented code such as
2415 context switches and increases the low-level kernel attack
2441 def_bool $(cc-option,-mharden-sls=all)
2444 def_bool $(cc-option,-mfunction-return=thunk-extern)
2475 kernel-to-user data leaks by avoiding speculative indirect
2476 branches. Requires a compiler with -mindirect-branch=thunk-extern
2480 bool "Enable return-thunks"
2485 Compile the kernel with the return-thunks compiler option to guard
2486 against kernel-to-user data leaks by avoiding return speculation.
2487 Requires a compiler with -mfunction-return=thunk-extern
2514 bool "Mitigate Straight-Line-Speculation"
2519 Compile the kernel with straight-line-speculation options to guard
2554 battery status information, and user-space programs will receive
2564 and more information, read <file:Documentation/power/apm-acpi.rst>
2565 and the Battery Powered Linux mini-HOWTO, available from
2570 VESA-compliant "green" monitors.
2615 bool "Enable PM at boot time"
2622 feature is turned off -- see "Do CPU IDLE calls", below). This
2651 do with your VESA-compliant power-saving monitor. Further, this
2652 option doesn't work for all laptops -- it might not turn off your
2662 needs to. Unfortunately, some BIOSes do not -- especially those in
2686 PCI-based systems don't have any BIOS at all. Linux can also try to
2707 bool "OLPC XO-1"
2719 # x86-64 doesn't support PCI BIOS access from long mode so always go direct.
2761 architectures -- if your target machine is modern, it probably does
2766 # x86_64 have no ISA slots, but can have ISA-style DMA.
2768 bool "ISA-style DMA support" if (X86_64 && EXPERT)
2771 Enables ISA-style DMA support for devices requiring such controllers.
2790 PCI-IDs of several on-chip devices, so its a good dependency
2796 tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
2800 This driver provides a clocksource built upon the on-chip
2801 27MHz high-resolution timer. Its also a workaround for
2802 NSC Geode SC-1100's buggy TSC, which loses time when the
2819 bool "OLPC XO-1 Power Management"
2822 Add support for poweroff and suspend of the OLPC XO-1 laptop.
2825 bool "OLPC XO-1 Real Time Clock"
2828 Add support for the XO-1 real time clock, which can be used as a
2832 bool "OLPC XO-1 SCI extras"
2837 Add support for SCI-based features of the OLPC XO-1 laptop:
2838 - EC-driven system wakeups
2839 - Power button
2840 - Ebook switch
2841 - Lid switch
2842 - AC adapter status updates
2843 - Battery status updates
2846 bool "OLPC XO-1.5 SCI extras"
2850 Add support for SCI-based features of the OLPC XO-1.5 laptop:
2851 - EC-driven system wakeups
2852 - AC adapter status updates
2853 - Battery status updates
2883 bool "Technologic Systems TS-5500 platform support"
2889 This option enables system support for the Technologic Systems TS-5500.
2908 Include code to run legacy 32-bit programs under a
2909 64-bit kernel. You should likely turn this on, unless you're
2910 100% sure that you don't have any 32-bit programs left.
2913 bool "x32 ABI for 64-bit mode"
2915 # llvm-objcopy does not convert x86_64 .note.gnu.property or
2919 depends on $(success,$(OBJCOPY) --version | head -n1 | grep -qv llvm)
2921 Include code to run binaries for the x32 native 32-bit ABI
2922 for 64-bit processors. An x32 process gets access to the
2923 full 64-bit register file and wide data path while leaving