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authorMasahiro Yamada <masahiroy@kernel.org>2020-06-13 19:50:22 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2020-06-13 19:57:21 +0300
commita7f7f6248d9740d710fd6bd190293fe5e16410ac (patch)
treedc59d36a552f7e25f909f5b2edc83f96c013befa /arch/x86
parente4a42c82e943b97ce124539fcd7a47445b43fa0d (diff)
downloadlinux-a7f7f6248d9740d710fd6bd190293fe5e16410ac.tar.xz
treewide: replace '---help---' in Kconfig files with 'help'
Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig276
-rw-r--r--arch/x86/Kconfig.cpu72
-rw-r--r--arch/x86/Kconfig.debug48
-rw-r--r--arch/x86/events/Kconfig8
-rw-r--r--arch/x86/kvm/Kconfig12
-rw-r--r--arch/x86/ras/Kconfig2
6 files changed, 209 insertions, 209 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 10dae8b96ed5..8ea987dd44f1 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -3,7 +3,7 @@
config 64BIT
bool "64-bit kernel" if "$(ARCH)" = "x86"
default "$(ARCH)" != "i386"
- ---help---
+ help
Say yes to build a 64-bit kernel - formerly known as x86_64
Say no to build a 32-bit kernel - formerly known as i386
@@ -386,7 +386,7 @@ config ZONE_DMA
config SMP
bool "Symmetric multi-processing support"
- ---help---
+ help
This enables support for systems with more than one CPU. If you have
a system with only one CPU, say N. If you have a system with more
than one CPU, say Y.
@@ -415,7 +415,7 @@ config SMP
config X86_FEATURE_NAMES
bool "Processor feature human-readable names" if EMBEDDED
default y
- ---help---
+ help
This option compiles in a table of x86 feature bits and corresponding
names. This is required to support /proc/cpuinfo and a few kernel
messages. You can disable this to save space, at the expense of
@@ -426,7 +426,7 @@ config X86_FEATURE_NAMES
config X86_X2APIC
bool "Support x2apic"
depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP || HYPERVISOR_GUEST)
- ---help---
+ help
This enables x2apic support on CPUs that have this feature.
This allows 32-bit apic IDs (so it can support very large systems),
@@ -438,7 +438,7 @@ config X86_MPPARSE
bool "Enable MPS table" if ACPI || SFI
default y
depends on X86_LOCAL_APIC
- ---help---
+ help
For old smp systems that do not have proper acpi support. Newer systems
(esp with 64bit cpus) with acpi support, MADT and DSDT will override it
@@ -481,13 +481,13 @@ if X86_32
config X86_BIGSMP
bool "Support for big SMP systems with more than 8 CPUs"
depends on SMP
- ---help---
+ help
This option is needed for the systems that have more than 8 CPUs.
config X86_EXTENDED_PLATFORM
bool "Support for extended (non-PC) x86 platforms"
default y
- ---help---
+ help
If you disable this option then the kernel will only support
standard PC platforms. (which covers the vast majority of
systems out there.)
@@ -509,7 +509,7 @@ if X86_64
config X86_EXTENDED_PLATFORM
bool "Support for extended (non-PC) x86 platforms"
default y
- ---help---
+ help
If you disable this option then the kernel will only support
standard PC platforms. (which covers the vast majority of
systems out there.)
@@ -533,7 +533,7 @@ config X86_NUMACHIP
depends on SMP
depends on X86_X2APIC
depends on PCI_MMCONFIG
- ---help---
+ help
Adds support for Numascale NumaChip large-SMP systems. Needed to
enable more than ~168 cores.
If you don't have one of these, you should say N here.
@@ -545,7 +545,7 @@ config X86_VSMP
depends on X86_64 && PCI
depends on X86_EXTENDED_PLATFORM
depends on SMP
- ---help---
+ help
Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
supposed to run on these EM64T-based machines. Only choose this option
if you have one of these machines.
@@ -558,7 +558,7 @@ config X86_UV
depends on EFI
depends on X86_X2APIC
depends on PCI
- ---help---
+ help
This option is needed in order to support SGI Ultraviolet systems.
If you don't have one of these, you should say N here.
@@ -568,7 +568,7 @@ config X86_UV
config X86_GOLDFISH
bool "Goldfish (Virtual Platform)"
depends on X86_EXTENDED_PLATFORM
- ---help---
+ help
Enable support for the Goldfish virtual platform used primarily
for Android development. Unless you are building for the Android
Goldfish emulator say N here.
@@ -583,7 +583,7 @@ config X86_INTEL_CE
select X86_REBOOTFIXUPS
select OF
select OF_EARLY_FLATTREE
- ---help---
+ help
Select for the Intel CE media processor (CE4100) SOC.
This option compiles in support for the CE4100 SOC for settop
boxes and media devices.
@@ -601,7 +601,7 @@ config X86_INTEL_MID
select APB_TIMER
select INTEL_SCU_PCI
select MFD_INTEL_MSIC
- ---help---
+ help
Select to build a kernel capable of supporting Intel MID (Mobile
Internet Device) platform systems which do not have the PCI legacy
interfaces. If you are building for a PC class system say N here.
@@ -621,7 +621,7 @@ config X86_INTEL_QUARK
select IOSF_MBI
select INTEL_IMR
select COMMON_CLK
- ---help---
+ help
Select to include support for Quark X1000 SoC.
Say Y here if you have a Quark based system such as the Arduino
compatible Intel Galileo.
@@ -632,7 +632,7 @@ config X86_INTEL_LPSS
select COMMON_CLK
select PINCTRL
select IOSF_MBI
- ---help---
+ help
Select to build support for Intel Low Power Subsystem such as
found on Intel Lynxpoint PCH. Selecting this option enables
things like clock tree (common clock framework) and pincontrol
@@ -643,7 +643,7 @@ config X86_AMD_PLATFORM_DEVICE
depends on ACPI
select COMMON_CLK
select PINCTRL
- ---help---
+ help
Select to interpret AMD specific ACPI device to platform device
such as I2C, UART, GPIO found on AMD Carrizo and later chipsets.
I2C and UART depend on COMMON_CLK to set clock. GPIO driver is
@@ -652,7 +652,7 @@ config X86_AMD_PLATFORM_DEVICE
config IOSF_MBI
tristate "Intel SoC IOSF Sideband support for SoC platforms"
depends on PCI
- ---help---
+ help
This option enables sideband register access support for Intel SoC
platforms. On these platforms the IOSF sideband is used in lieu of
MSR's for some register accesses, mostly but not limited to thermal
@@ -669,7 +669,7 @@ config IOSF_MBI
config IOSF_MBI_DEBUG
bool "Enable IOSF sideband access through debugfs"
depends on IOSF_MBI && DEBUG_FS
- ---help---
+ help
Select this option to expose the IOSF sideband access registers (MCR,
MDR, MCRX) through debugfs to write and read register information from
different units on the SoC. This is most useful for obtaining device
@@ -685,7 +685,7 @@ config X86_RDC321X
depends on X86_EXTENDED_PLATFORM
select M486
select X86_REBOOTFIXUPS
- ---help---
+ help
This option is needed for RDC R-321x system-on-chip, also known
as R-8610-(G).
If you don't have one of these chips, you should say N here.
@@ -694,7 +694,7 @@ config X86_32_NON_STANDARD
bool "Support non-standard 32-bit SMP architectures"
depends on X86_32 && SMP
depends on X86_EXTENDED_PLATFORM
- ---help---
+ help
This option compiles in the bigsmp and STA2X11 default
subarchitectures. It is intended for a generic binary
kernel. If you select them all, kernel will probe it one by
@@ -717,7 +717,7 @@ config STA2X11
select SWIOTLB
select MFD_STA2X11
select GPIOLIB
- ---help---
+ help
This adds support for boards based on the STA2X11 IO-Hub,
a.k.a. "ConneXt". The chip is used in place of the standard
PC chipset, so all "standard" peripherals are missing. If this
@@ -727,7 +727,7 @@ config STA2X11
config X86_32_IRIS
tristate "Eurobraille/Iris poweroff module"
depends on X86_32
- ---help---
+ help
The Iris machines from EuroBraille do not have APM or ACPI support
to shut themselves down properly. A special I/O sequence is
needed to do so, which is what this module does at
@@ -741,7 +741,7 @@ config SCHED_OMIT_FRAME_POINTER
def_bool y
prompt "Single-depth WCHAN output"
depends on X86
- ---help---
+ 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,
@@ -751,7 +751,7 @@ config SCHED_OMIT_FRAME_POINTER
menuconfig HYPERVISOR_GUEST
bool "Linux guest support"
- ---help---
+ help
Say Y here to enable options for running Linux under various hyper-
visors. This option enables basic hypervisor detection and platform
setup.
@@ -763,7 +763,7 @@ if HYPERVISOR_GUEST
config PARAVIRT
bool "Enable paravirtualization code"
- ---help---
+ 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
@@ -775,14 +775,14 @@ config PARAVIRT_XXL
config PARAVIRT_DEBUG
bool "paravirt-ops debugging"
depends on PARAVIRT && DEBUG_KERNEL
- ---help---
+ help
Enable to debug paravirt_ops internals. Specifically, BUG if
a paravirt_op is missing when it is called.
config PARAVIRT_SPINLOCKS
bool "Paravirtualization layer for spinlocks"
depends on PARAVIRT && SMP
- ---help---
+ help
Paravirtualized spinlocks allow a pvops backend to replace the
spinlock implementation with something virtualization-friendly
(for example, block the virtual CPU rather than spinning).
@@ -803,7 +803,7 @@ config KVM_GUEST
select PARAVIRT_CLOCK
select ARCH_CPUIDLE_HALTPOLL
default y
- ---help---
+ help
This option enables various optimizations for running under the KVM
hypervisor. It includes a paravirtualized clock, so that instead
of relying on a PIT (or probably other) emulation by the
@@ -818,14 +818,14 @@ config ARCH_CPUIDLE_HALTPOLL
config PVH
bool "Support for running PVH guests"
- ---help---
+ help
This option enables the PVH entry point for guest virtual machines
as specified in the x86/HVM direct boot ABI.
config KVM_DEBUG_FS
bool "Enable debug information for KVM Guests in debugfs"
depends on KVM_GUEST && DEBUG_FS
- ---help---
+ help
This option enables collection of various statistics for KVM guest.
Statistics are displayed in debugfs filesystem. Enabling this option
may incur significant overhead.
@@ -833,7 +833,7 @@ config KVM_DEBUG_FS
config PARAVIRT_TIME_ACCOUNTING
bool "Paravirtual steal time accounting"
depends on PARAVIRT
- ---help---
+ help
Select this option to enable fine granularity task steal time
accounting. Time spent executing other tasks in parallel with
the current vCPU is discounted from the vCPU power. To account for
@@ -848,7 +848,7 @@ config JAILHOUSE_GUEST
bool "Jailhouse non-root cell support"
depends on X86_64 && PCI
select X86_PM_TIMER
- ---help---
+ help
This option allows to run Linux as guest in a Jailhouse non-root
cell. You can leave this option disabled if you only want to start
Jailhouse and run Linux afterwards in the root cell.
@@ -871,7 +871,7 @@ source "arch/x86/Kconfig.cpu"
config HPET_TIMER
def_bool X86_64
prompt "HPET Timer Support" if X86_32
- ---help---
+ help
Use the IA-PC HPET (High Precision Event Timer) to manage
time in preference to the PIT and RTC, if a HPET is
present.
@@ -909,7 +909,7 @@ config DMI
default y
select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
bool "Enable DMI scanning" if EXPERT
- ---help---
+ help
Enabled scanning of DMI to identify machine quirks. Say Y
here unless you have verified that your setup is not
affected by entries in the DMI blacklist. Required by PNP
@@ -920,7 +920,7 @@ config GART_IOMMU
select IOMMU_HELPER
select SWIOTLB
depends on X86_64 && PCI && AMD_NB
- ---help---
+ help
Provides a driver for older AMD Athlon64/Opteron/Turion/Sempron
GART based hardware IOMMUs.
@@ -941,7 +941,7 @@ config MAXSMP
bool "Enable Maximum number of SMP Processors and NUMA Nodes"
depends on X86_64 && SMP && DEBUG_KERNEL
select CPUMASK_OFFSTACK
- ---help---
+ help
Enable maximum number of CPUS and NUMA Nodes for this architecture.
If unsure, say N.
@@ -997,7 +997,7 @@ config NR_CPUS
int "Maximum number of CPUs" if SMP && !MAXSMP
range NR_CPUS_RANGE_BEGIN NR_CPUS_RANGE_END
default NR_CPUS_DEFAULT
- ---help---
+ help
This allows you to specify the maximum number of CPUs which this
kernel will support. If CPUMASK_OFFSTACK is enabled, the maximum
supported value is 8192, otherwise the maximum value is 512. The
@@ -1013,7 +1013,7 @@ config SCHED_MC
def_bool y
prompt "Multi-core scheduler support"
depends on SMP
- ---help---
+ 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.
@@ -1024,7 +1024,7 @@ config SCHED_MC_PRIO
select X86_INTEL_PSTATE
select CPU_FREQ
default y
- ---help---
+ help
Intel Turbo Boost Max Technology 3.0 enabled CPUs have a
core ordering determined at manufacturing time, which allows
certain cores to reach higher turbo frequencies (when running
@@ -1047,7 +1047,7 @@ config X86_UP_APIC
bool "Local APIC support on uniprocessors" if !PCI_MSI
default PCI_MSI
depends on X86_32 && !SMP && !X86_32_NON_STANDARD
- ---help---
+ 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
@@ -1060,7 +1060,7 @@ config X86_UP_APIC
config X86_UP_IOAPIC
bool "IO-APIC support on uniprocessors"
depends on X86_UP_APIC
- ---help---
+ 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.
@@ -1082,7 +1082,7 @@ config X86_IO_APIC
config X86_REROUTE_FOR_BROKEN_BOOT_IRQS
bool "Reroute for broken boot IRQs"
depends on X86_IO_APIC
- ---help---
+ help
This option enables a workaround that fixes a source of
spurious interrupts. This is recommended when threaded
interrupt handling is used on systems where the generation of
@@ -1106,7 +1106,7 @@ config X86_MCE
bool "Machine Check / overheating reporting"
select GENERIC_ALLOCATOR
default y
- ---help---
+ help
Machine Check support allows the processor to notify the
kernel if it detects a problem (e.g. overheating, data corruption).
The action the kernel takes depends on the severity of the problem,
@@ -1115,7 +1115,7 @@ config X86_MCE
config X86_MCELOG_LEGACY
bool "Support for deprecated /dev/mcelog character device"
depends on X86_MCE
- ---help---
+ help
Enable support for /dev/mcelog which is needed by the old mcelog
userspace logging daemon. Consider switching to the new generation
rasdaemon solution.
@@ -1124,7 +1124,7 @@ config X86_MCE_INTEL
def_bool y
prompt "Intel MCE features"
depends on X86_MCE && X86_LOCAL_APIC
- ---help---
+ help
Additional support for intel specific MCE features such as
the thermal monitor.
@@ -1132,14 +1132,14 @@ config X86_MCE_AMD
def_bool y
prompt "AMD MCE features"
depends on X86_MCE && X86_LOCAL_APIC && AMD_NB
- ---help---
+ help
Additional support for AMD specific MCE features such as
the DRAM Error Threshold.
config X86_ANCIENT_MCE
bool "Support for old Pentium 5 / WinChip machine checks"
depends on X86_32 && X86_MCE
- ---help---
+ help
Include support for machine check handling on old Pentium 5 or WinChip
systems. These typically need to be enabled explicitly on the command
line.
@@ -1151,7 +1151,7 @@ config X86_MCE_THRESHOLD
config X86_MCE_INJECT
depends on X86_MCE && X86_LOCAL_APIC && DEBUG_FS
tristate "Machine check injector support"
- ---help---
+ help
Provide support for injecting machine checks for testing purposes.
If you don't know what a machine check is and you don't do kernel
QA it is safe to say n.
@@ -1165,7 +1165,7 @@ source "arch/x86/events/Kconfig"
config X86_LEGACY_VM86
bool "Legacy VM86 support"
depends on X86_32
- ---help---
+ help
This option allows user programs to put the CPU into V8086
mode, which is an 80286-era approximation of 16-bit real mode.
@@ -1197,7 +1197,7 @@ config X86_16BIT
bool "Enable support for 16-bit segments" if EXPERT
default y
depends on MODIFY_LDT_SYSCALL
- ---help---
+ help
This option is required by programs like Wine to run 16-bit
protected mode legacy code on x86 processors. Disabling
this option saves about 300 bytes on i386, or around 6K text
@@ -1215,7 +1215,7 @@ config X86_VSYSCALL_EMULATION
bool "Enable vsyscall emulation" if EXPERT
default y
depends on X86_64
- ---help---
+ help
This enables emulation of the legacy vsyscall page. Disabling
it is roughly equivalent to booting with vsyscall=none, except
that it will also disable the helpful warning if a program
@@ -1232,7 +1232,7 @@ config X86_VSYSCALL_EMULATION
config X86_IOPL_IOPERM
bool "IOPERM and IOPL Emulation"
default y
- ---help---
+ help
This enables the ioperm() and iopl() syscalls which are necessary
for legacy applications.
@@ -1250,7 +1250,7 @@ config X86_IOPL_IOPERM
config TOSHIBA
tristate "Toshiba Laptop support"
depends on X86_32
- ---help---
+ 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
@@ -1267,7 +1267,7 @@ config I8K
tristate "Dell i8k legacy laptop support"
select HWMON
select SENSORS_DELL_SMM
- ---help---
+ help
This option enables legacy /proc/i8k userspace interface in hwmon
dell-smm-hwmon driver. Character file /proc/i8k reports bios version,
temperature and allows controlling fan speeds of Dell laptops via
@@ -1282,7 +1282,7 @@ config I8K
config X86_REBOOTFIXUPS
bool "Enable X86 board specific fixups for reboot"
depends on X86_32
- ---help---
+ 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
@@ -1301,7 +1301,7 @@ config MICROCODE
default y
depends on CPU_SUP_AMD || CPU_SUP_INTEL
select FW_LOADER
- ---help---
+ help
If you say Y here, you will be able to update the microcode on
Intel and AMD processors. The Intel support is for the IA32 family,
e.g. Pentium Pro, Pentium II, Pentium III, Pentium 4, Xeon etc. The
@@ -1323,7 +1323,7 @@ config MICROCODE_INTEL
depends on MICROCODE
default MICROCODE
select FW_LOADER
- ---help---
+ help
This options enables microcode patch loading support for Intel
processors.
@@ -1335,7 +1335,7 @@ config MICROCODE_AMD
bool "AMD microcode loading support"
depends on MICROCODE
select FW_LOADER
- ---help---
+ help
If you select this option, microcode patch loading support for AMD
processors will be enabled.
@@ -1343,7 +1343,7 @@ config MICROCODE_OLD_INTERFACE
bool "Ancient loading interface (DEPRECATED)"
default n
depends on MICROCODE
- ---help---
+ help
DO NOT USE THIS! This is the ancient /dev/cpu/microcode interface
which was used by userspace tools like iucode_tool and microcode.ctl.
It is inadequate because it runs too late to be able to properly
@@ -1353,7 +1353,7 @@ config MICROCODE_OLD_INTERFACE
config X86_MSR
tristate "/dev/cpu/*/msr - Model-specific register support"
- ---help---
+ 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.
@@ -1362,7 +1362,7 @@ config X86_MSR
config X86_CPUID
tristate "/dev/cpu/*/cpuid - CPU information support"
- ---help---
+ 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
@@ -1375,7 +1375,7 @@ choice
config NOHIGHMEM
bool "off"
- ---help---
+ 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
@@ -1411,7 +1411,7 @@ config NOHIGHMEM
config HIGHMEM4G
bool "4GB"
- ---help---
+ help
Select this if you have a 32-bit processor and between 1 and 4
gigabytes of physical RAM.
@@ -1419,7 +1419,7 @@ config HIGHMEM64G
bool "64GB"
depends on !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
select X86_PAE
- ---help---
+ help
Select this if you have a 32-bit processor and more than 4
gigabytes of physical RAM.
@@ -1429,7 +1429,7 @@ choice
prompt "Memory split" if EXPERT
default VMSPLIT_3G
depends on X86_32
- ---help---
+ help
Select the desired split between kernel and user memory.
If the address range available to the kernel is less than the
@@ -1477,7 +1477,7 @@ config X86_PAE
depends on X86_32 && !HIGHMEM4G
select PHYS_ADDR_T_64BIT
select SWIOTLB
- ---help---
+ help
PAE is required for NX support, and furthermore enables
larger swapspace support for non-overcommit purposes. It
has the cost of more pagetable lookup overhead, and also
@@ -1489,7 +1489,7 @@ config X86_5LEVEL
select DYNAMIC_MEMORY_LAYOUT
select SPARSEMEM_VMEMMAP
depends on X86_64
- ---help---
+ help
5-level paging enables access to larger address space:
upto 128 PiB of virtual address space and 4 PiB of
physical address space.
@@ -1507,7 +1507,7 @@ config X86_5LEVEL
config X86_DIRECT_GBPAGES
def_bool y
depends on X86_64
- ---help---
+ help
Certain kernel features effectively disable kernel
linear 1 GB mappings (even if the CPU otherwise
supports them), so don't confuse the user by printing
@@ -1516,7 +1516,7 @@ config X86_DIRECT_GBPAGES
config X86_CPA_STATISTICS
bool "Enable statistic for Change Page Attribute"
depends on DEBUG_FS
- ---help---
+ help
Expose statistics about the Change Page Attribute mechanism, which
helps to determine the effectiveness of preserving large and huge
page mappings when mapping protections are changed.
@@ -1528,7 +1528,7 @@ config AMD_MEM_ENCRYPT
select DYNAMIC_PHYSICAL_MASK
select ARCH_USE_MEMREMAP_PROT
select ARCH_HAS_FORCE_DMA_UNENCRYPTED
- ---help---
+ help
Say yes to enable support for the encryption of system memory.
This requires an AMD processor that supports Secure Memory
Encryption (SME).
@@ -1537,7 +1537,7 @@ config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT
bool "Activate AMD Secure Memory Encryption (SME) by default"
default y
depends on AMD_MEM_ENCRYPT
- ---help---
+ help
Say yes to have system memory encrypted by default if running on
an AMD processor that supports Secure Memory Encryption (SME).
@@ -1553,7 +1553,7 @@ config NUMA
depends on SMP
depends on X86_64 || (X86_32 && HIGHMEM64G && X86_BIGSMP)
default y if X86_BIGSMP
- ---help---
+ help
Enable NUMA (Non-Uniform Memory Access) support.
The kernel will try to allocate memory used by a CPU on the
@@ -1572,7 +1572,7 @@ config AMD_NUMA
def_bool y
prompt "Old style AMD Opteron NUMA detection"
depends on X86_64 && NUMA && PCI
- ---help---
+ help
Enable AMD NUMA node topology detection. You should say Y here if
you have a multi processor AMD system. This uses an old method to
read the NUMA configuration directly from the builtin Northbridge
@@ -1584,13 +1584,13 @@ config X86_64_ACPI_NUMA
prompt "ACPI NUMA detection"
depends on X86_64 && NUMA && ACPI && PCI
select ACPI_NUMA
- ---help---
+ help
Enable ACPI SRAT based node topology detection.
config NUMA_EMU
bool "NUMA emulation"
depends on NUMA
- ---help---
+ help
Enable NUMA emulation. A flat machine will be split
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
@@ -1602,7 +1602,7 @@ config NODES_SHIFT
default "6" if X86_64
default "3"
depends on NEED_MULTIPLE_NODES
- ---help---
+ help
Specify the maximum number of NUMA Nodes available on the target
system. Increases memory reserved to accommodate various tables.
@@ -1661,7 +1661,7 @@ config X86_PMEM_LEGACY
config HIGHPTE
bool "Allocate 3rd-level pagetables from highmem"
depends on HIGHMEM
- ---help---
+ 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
@@ -1669,7 +1669,7 @@ config HIGHPTE
config X86_CHECK_BIOS_CORRUPTION
bool "Check for low memory corruption"
- ---help---
+ help
Periodically check for memory corruption in low memory, which
is suspected to be caused by BIOS. Even when enabled in the
configuration, it is disabled at runtime. Enable it by
@@ -1693,7 +1693,7 @@ config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
bool "Set the default setting of memory_corruption_check"
depends on X86_CHECK_BIOS_CORRUPTION
default y
- ---help---
+ help
Set whether the default state of memory_corruption_check is
on or off.
@@ -1701,7 +1701,7 @@ config X86_RESERVE_LOW
int "Amount of low memory, in kilobytes, to reserve for the BIOS"
default 64
range 4 640
- ---help---
+ help
Specify the amount of low memory to reserve for the BIOS.
The first page contains BIOS data structures that the kernel
@@ -1730,7 +1730,7 @@ config MATH_EMULATION
bool
depends on MODIFY_LDT_SYSCALL
prompt "Math emulation" if X86_32 && (M486SX || MELAN)
- ---help---
+ 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
@@ -1756,7 +1756,7 @@ config MATH_EMULATION
config MTRR
def_bool y
prompt "MTRR (Memory Type Range Register) support" if EXPERT
- ---help---
+ 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
@@ -1792,7 +1792,7 @@ config MTRR_SANITIZER
def_bool y
prompt "MTRR cleanup support"
depends on MTRR
- ---help---
+ help
Convert MTRR layout from continuous to discrete, so X drivers can
add writeback entries.
@@ -1807,7 +1807,7 @@ config MTRR_SANITIZER_ENABLE_DEFAULT
range 0 1
default "0"
depends on MTRR_SANITIZER
- ---help---
+ help
Enable mtrr cleanup default value
config MTRR_SANITIZER_SPARE_REG_NR_DEFAULT
@@ -1815,7 +1815,7 @@ config MTRR_SANITIZER_SPARE_REG_NR_DEFAULT
range 0 7
default "1"
depends on MTRR_SANITIZER
- ---help---
+ help
mtrr cleanup spare entries default, it can be changed via
mtrr_spare_reg_nr=N on the kernel command line.
@@ -1823,7 +1823,7 @@ config X86_PAT
def_bool y
prompt "x86 PAT support" if EXPERT
depends on MTRR
- ---help---
+ help
Use PAT attributes to setup page level cache control.
PATs are the modern equivalents of MTRRs and are much more
@@ -1841,7 +1841,7 @@ config ARCH_USES_PG_UNCACHED
config ARCH_RANDOM
def_bool y
prompt "x86 architectural random number generator" if EXPERT
- ---help---
+ help
Enable the x86 architectural RDRAND instruction
(Intel Bull Mountain technology) to generate random numbers.
If supported, this is a high bandwidth, cryptographically
@@ -1850,7 +1850,7 @@ config ARCH_RANDOM
config X86_SMAP
def_bool y
prompt "Supervisor Mode Access Prevention" if EXPERT
- ---help---
+ help
Supervisor Mode Access Prevention (SMAP) is a security
feature in newer Intel processors. There is a small
performance cost if this enabled and turned on; there is
@@ -1861,7 +1861,7 @@ config X86_SMAP
config X86_UMIP
def_bool y
prompt "User Mode Instruction Prevention" if EXPERT
- ---help---
+ help
User Mode Instruction Prevention (UMIP) is a security feature in
some x86 processors. If enabled, a general protection fault is
issued if the SGDT, SLDT, SIDT, SMSW or STR instructions are
@@ -1880,7 +1880,7 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS
depends on X86_64 && (CPU_SUP_INTEL || CPU_SUP_AMD)
select ARCH_USES_HIGH_VMA_FLAGS
select ARCH_HAS_PKEYS
- ---help---
+ help
Memory Protection Keys provides a mechanism for enforcing
page-based protections, but without requiring modification of the
page tables when an application changes protection domains.
@@ -1939,7 +1939,7 @@ config EFI
depends on ACPI
select UCS2_STRING
select EFI_RUNTIME_WRAPPERS
- ---help---
+ help
This enables the kernel to use EFI runtime services that are
available (such as the EFI variable services).
@@ -1955,7 +1955,7 @@ config EFI_STUB
depends on EFI && !X86_USE_3DNOW
depends on $(cc-option,-mabi=ms) || X86_32
select RELOCATABLE
- ---help---
+ help
This kernel feature allows a bzImage to be loaded directly
by EFI firmware without the use of a bootloader.
@@ -1964,7 +1964,7 @@ config EFI_STUB
config EFI_MIXED
bool "EFI mixed-mode support"
depends on EFI_STUB && X86_64
- ---help---
+ help
Enabling this feature allows a 64-bit kernel to be booted
on a 32-bit firmware, provided that your CPU supports 64-bit
mode.
@@ -1978,7 +1978,7 @@ config EFI_MIXED
config SECCOMP
def_bool y
prompt "Enable seccomp to safely compute untrusted bytecode"
- ---help---
+ 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
@@ -1996,7 +1996,7 @@ source "kernel/Kconfig.hz"
config KEXEC
bool "kexec system call"
select KEXEC_CORE
- ---help---
+ 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 independent of the system firmware. And like a reboot
@@ -2017,7 +2017,7 @@ config KEXEC_FILE
depends on X86_64
depends on CRYPTO=y
depends on CRYPTO_SHA256=y
- ---help---
+ help
This is new version of kexec system call. This system call is
file based and takes file descriptors as system call argument
for kernel and initramfs as opposed to list of segments as
@@ -2029,7 +2029,7 @@ config ARCH_HAS_KEXEC_PURGATORY
config KEXEC_SIG
bool "Verify kernel signature during kexec_file_load() syscall"
depends on KEXEC_FILE
- ---help---
+ help
This option makes the kexec_file_load() syscall check for a valid
signature of the kernel image. The image can still be loaded without
@@ -2043,7 +2043,7 @@ config KEXEC_SIG
config KEXEC_SIG_FORCE
bool "Require a valid signature in kexec_file_load() syscall"
depends on KEXEC_SIG
- ---help---
+ help
This option makes kernel signature verification mandatory for
the kexec_file_load() syscall.
@@ -2052,13 +2052,13 @@ config KEXEC_BZIMAGE_VERIFY_SIG
depends on KEXEC_SIG
depends on SIGNED_PE_FILE_VERIFICATION
select SYSTEM_TRUSTED_KEYRING
- ---help---
+ help
Enable bzImage signature verification support.
config CRASH_DUMP
bool "kernel crash dumps"
depends on X86_64 || (X86_32 && HIGHMEM)
- ---help---
+ help
Generate crash dump after being started by kexec.
This should be normally only set in special crash dump kernels
which are loaded in the main kernel with kexec-tools into
@@ -2072,14 +2072,14 @@ config CRASH_DUMP
config KEXEC_JUMP
bool "kexec jump"
depends on KEXEC && HIBERNATION
- ---help---
+ help
Jump between original kernel and kexeced kernel and invoke
code in physical address mode via KEXEC
config PHYSICAL_START
hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
default "0x1000000"
- ---help---
+ help
This gives the physical address where the kernel is loaded.
If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then
@@ -2120,7 +2120,7 @@ config PHYSICAL_START
config RELOCATABLE
bool "Build a relocatable kernel"
default y
- ---help---
+ help
This builds a kernel image that retains relocation information
so it can be loaded someplace besides the default 1MB.
The relocations tend to make the kernel binary about 10% larger,
@@ -2138,7 +2138,7 @@ config RANDOMIZE_BASE
bool "Randomize the address of the kernel image (KASLR)"
depends on RELOCATABLE
default y
- ---help---
+ help
In support of Kernel Address Space Layout Randomization (KASLR),
this randomizes the physical address at which the kernel image
is decompressed and the virtual address where the kernel
@@ -2179,7 +2179,7 @@ config PHYSICAL_ALIGN
default "0x200000"
range 0x2000 0x1000000 if X86_32
range 0x200000 0x1000000 if X86_64
- ---help---
+ help
This value puts the alignment restrictions on physical address
where kernel is loaded and run from. Kernel is compiled for an
address which meets above alignment restriction.
@@ -2203,7 +2203,7 @@ config PHYSICAL_ALIGN
config DYNAMIC_MEMORY_LAYOUT
bool
- ---help---
+ help
This option makes base addresses of vmalloc and vmemmap as well as
__PAGE_OFFSET movable during boot.
@@ -2213,7 +2213,7 @@ config RANDOMIZE_MEMORY
depends on RANDOMIZE_BASE
select DYNAMIC_MEMORY_LAYOUT
default RANDOMIZE_BASE
- ---help---
+ help
Randomizes the base virtual address of kernel memory sections
(physical memory mapping, vmalloc & vmemmap). This security feature
makes exploits relying on predictable memory locations less reliable.
@@ -2232,7 +2232,7 @@ config RANDOMIZE_MEMORY_PHYSICAL_PADDING
default "0x0"
range 0x1 0x40 if MEMORY_HOTPLUG
range 0x0 0x40
- ---help---
+ help
Define the padding in terabytes added to the existing physical
memory size during kernel memory randomization. It is useful
for memory hotplug support but reduces the entropy available for
@@ -2247,7 +2247,7 @@ config HOTPLUG_CPU
config BOOTPARAM_HOTPLUG_CPU0
bool "Set default setting of cpu0_hotpluggable"
depends on HOTPLUG_CPU
- ---help---
+ help
Set whether default state of cpu0_hotpluggable is on or off.
Say Y here to enable CPU0 hotplug by default. If this switch
@@ -2276,7 +2276,7 @@ config DEBUG_HOTPLUG_CPU0
def_bool n
prompt "Debug CPU0 hotplug"
depends on HOTPLUG_CPU
- ---help---
+ help
Enabling this option offlines CPU0 (if CPU0 can be offlined) as
soon as possible and boots up userspace with CPU0 offlined. User
can online CPU0 back after boot time.
@@ -2291,7 +2291,7 @@ config COMPAT_VDSO
def_bool n
prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
depends on COMPAT_32
- ---help---
+ help
Certain buggy versions of glibc will crash if they are
presented with a 32-bit vDSO that is not mapped at the address
indicated in its segment table.
@@ -2369,7 +2369,7 @@ endchoice
config CMDLINE_BOOL
bool "Built-in kernel command line"
- ---help---
+ help
Allow for specifying boot arguments to the kernel at
build time. On some systems (e.g. embedded ones), it is
necessary or convenient to provide some or all of the
@@ -2387,7 +2387,7 @@ config CMDLINE
string "Built-in kernel command string"
depends on CMDLINE_BOOL
default ""
- ---help---
+ help
Enter arguments here that should be compiled into the kernel
image and used at boot time. If the boot loader provides a
command line at boot time, it is appended to this string to
@@ -2403,7 +2403,7 @@ config CMDLINE
config CMDLINE_OVERRIDE
bool "Built-in command line overrides boot loader arguments"
depends on CMDLINE_BOOL && CMDLINE != ""
- ---help---
+ help
Set this option to 'Y' to have the kernel ignore the boot loader
command line, and use ONLY the built-in command line.
@@ -2413,7 +2413,7 @@ config CMDLINE_OVERRIDE
config MODIFY_LDT_SYSCALL
bool "Enable the LDT (local descriptor table)" if EXPERT
default y
- ---help---
+ help
Linux can allow user programs to install a per-process x86
Local Descriptor Table (LDT) using the modify_ldt(2) system
call. This is required to run 16-bit or segmented code such as
@@ -2477,7 +2477,7 @@ config X86_APM_BOOT
menuconfig APM
tristate "APM (Advanced Power Management) BIOS support"
depends on X86_32 && PM_SLEEP
- ---help---
+ 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
@@ -2537,14 +2537,14 @@ if APM
config APM_IGNORE_USER_SUSPEND
bool "Ignore USER SUSPEND"
- ---help---
+ 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"
- ---help---
+ 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
@@ -2562,7 +2562,7 @@ config APM_DO_ENABLE
config APM_CPU_IDLE
depends on CPU_IDLE
bool "Make CPU Idle calls when idle"
- ---help---
+ 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
@@ -2573,7 +2573,7 @@ config APM_CPU_IDLE
config APM_DISPLAY_BLANK
bool "Enable console blanking using APM"
- ---help---
+ 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
@@ -2586,7 +2586,7 @@ config APM_DISPLAY_BLANK
config APM_ALLOW_INTS
bool "Allow interrupts during APM BIOS calls"
- ---help---
+ 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
@@ -2611,7 +2611,7 @@ choice
prompt "PCI access mode"
depends on X86_32 && PCI
default PCI_GOANY
- ---help---
+ 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
@@ -2708,7 +2708,7 @@ if X86_32
config ISA
bool "ISA support"
- ---help---
+ 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
@@ -2717,7 +2717,7 @@ config ISA
config SCx200
tristate "NatSemi SCx200 support"
- ---help---
+ help
This provides basic support for National Semiconductor's
(now AMD's) Geode processors. The driver probes for the
PCI-IDs of several on-chip devices, so its a good dependency
@@ -2729,7 +2729,7 @@ config SCx200HR_TIMER
tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
depends on SCx200
default y
- ---help---
+ help
This driver provides a clocksource built upon the on-chip
27MHz high-resolution timer. Its also a workaround for
NSC Geode SC-1100's buggy TSC, which loses time when the
@@ -2744,20 +2744,20 @@ config OLPC
select OF_PROMTREE
select IRQ_DOMAIN
select OLPC_EC
- ---help---
+ help
Add support for detecting the unique features of the OLPC
XO hardware.
config OLPC_XO1_PM
bool "OLPC XO-1 Power Management"
depends on OLPC && MFD_CS5535=y && PM_SLEEP
- ---help---
+ help
Add support for poweroff and suspend of the OLPC XO-1 laptop.
config OLPC_XO1_RTC
bool "OLPC XO-1 Real Time Clock"
depends on OLPC_XO1_PM && RTC_DRV_CMOS
- ---help---
+ help
Add support for the XO-1 real time clock, which can be used as a
programmable wakeup source.
@@ -2766,7 +2766,7 @@ config OLPC_XO1_SCI
depends on OLPC && OLPC_XO1_PM && GPIO_CS5535=y
depends on INPUT=y
select POWER_SUPPLY
- ---help---
+ help
Add support for SCI-based features of the OLPC XO-1 laptop:
- EC-driven system wakeups
- Power button
@@ -2779,7 +2779,7 @@ config OLPC_XO15_SCI
bool "OLPC XO-1.5 SCI extras"
depends on OLPC && ACPI
select POWER_SUPPLY
- ---help---
+ help
Add support for SCI-based features of the OLPC XO-1.5 laptop:
- EC-driven system wakeups
- AC adapter status updates
@@ -2788,7 +2788,7 @@ config OLPC_XO15_SCI
config ALIX
bool "PCEngines ALIX System Support (LED setup)"
select GPIOLIB
- ---help---
+ help
This option enables system support for the PCEngines ALIX.
At present this just sets up LEDs for GPIO control on
ALIX2/3/6 boards. However, other system specific setup should
@@ -2802,14 +2802,14 @@ config ALIX
config NET5501
bool "Soekris Engineering net5501 System Support (LEDS, GPIO, etc)"
select GPIOLIB
- ---help---
+ help
This option enables system support for the Soekris Engineering net5501.
config GEOS
bool "Traverse Technologies GEOS System Support (LEDS, GPIO, etc)"
select GPIOLIB
depends on DMI
- ---help---
+ help
This option enables system support for the Traverse Technologies GEOS.
config TS5500
@@ -2818,7 +2818,7 @@ config TS5500
select CHECK_SIGNATURE
select NEW_LEDS
select LEDS_CLASS
- ---help---
+ help
This option enables system support for the Technologic Systems TS-5500.
endif # X86_32
@@ -2865,7 +2865,7 @@ config IA32_EMULATION
select BINFMT_ELF
select COMPAT_BINFMT_ELF
select COMPAT_OLD_SIGACTION
- ---help---
+ help
Include code to run legacy 32-bit programs under a
64-bit kernel. You should likely turn this on, unless you're
100% sure that you don't have any 32-bit programs left.
@@ -2874,13 +2874,13 @@ config IA32_AOUT
tristate "IA32 a.out support"
depends on IA32_EMULATION
depends on BROKEN
- ---help---
+ help
Support old a.out binaries in the 32bit emulation.
config X86_X32
bool "x32 ABI for 64-bit mode"
depends on X86_64
- ---help---
+ help
Include code to run binaries for the x32 native 32-bit ABI
for 64-bit processors. An x32 process gets access to the
full 64-bit register file and wide data path while leaving
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index bc3a497c029c..814fe0d349b0 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -4,7 +4,7 @@ choice
prompt "Processor family"
default M686 if X86_32
default GENERIC_CPU if X86_64
- ---help---
+ 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 supported x86 CPU types (albeit not
@@ -53,21 +53,21 @@ choice
config M486SX
bool "486SX"
depends on X86_32
- ---help---
+ help
Select this for an 486-class CPU without an FPU such as
AMD/Cyrix/IBM/Intel SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5S.
config M486
bool "486DX"
depends on X86_32
- ---help---
+ help
Select this for an 486-class CPU such as AMD/Cyrix/IBM/Intel
486DX/DX2/DX4 and UMC U5D.
config M586
bool "586/K5/5x86/6x86/6x86MX"
depends on X86_32
- ---help---
+ 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.
@@ -75,21 +75,21 @@ config M586
config M586TSC
bool "Pentium-Classic"
depends on X86_32
- ---help---
+ help
Select this for a Pentium Classic processor with the RDTSC (Read
Time Stamp Counter) instruction for benchmarking.
config M586MMX
bool "Pentium-MMX"
depends on X86_32
- ---help---
+ help
Select this for a Pentium with the MMX graphics/multimedia
extended instructions.
config M686
bool "Pentium-Pro"
depends on X86_32
- ---help---
+ 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.
@@ -97,7 +97,7 @@ config M686
config MPENTIUMII
bool "Pentium-II/Celeron(pre-Coppermine)"
depends on X86_32
- ---help---
+ 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
@@ -107,7 +107,7 @@ config MPENTIUMII
config MPENTIUMIII
bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
depends on X86_32
- ---help---
+ 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
@@ -116,14 +116,14 @@ config MPENTIUMIII
config MPENTIUMM
bool "Pentium M"
depends on X86_32
- ---help---
+ help
Select this for Intel Pentium M (not Pentium-4 M)
notebook chips.
config MPENTIUM4
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
depends on X86_32
- ---help---
+ 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
@@ -159,7 +159,7 @@ config MPENTIUM4
config MK6
bool "K6/K6-II/K6-III"
depends on X86_32
- ---help---
+ help
Select this for an AMD K6-family processor. Enables use of
some extended instructions, and passes appropriate optimization
flags to GCC.
@@ -167,14 +167,14 @@ config MK6
config MK7
bool "Athlon/Duron/K7"
depends on X86_32
- ---help---
+ 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---
+ 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.
@@ -182,7 +182,7 @@ config MK8
config MCRUSOE
bool "Crusoe"
depends on X86_32
- ---help---
+ 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).
@@ -190,13 +190,13 @@ config MCRUSOE
config MEFFICEON
bool "Efficeon"
depends on X86_32
- ---help---
+ help
Select this for a Transmeta Efficeon processor.
config MWINCHIPC6
bool "Winchip-C6"
depends on X86_32
- ---help---
+ 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.
@@ -204,7 +204,7 @@ config MWINCHIPC6
config MWINCHIP3D
bool "Winchip-2/Winchip-2A/Winchip-3"
depends on X86_32
- ---help---
+ help
Select this for an IDT Winchip-2, 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
@@ -214,7 +214,7 @@ config MWINCHIP3D
config MELAN
bool "AMD Elan"
depends on X86_32
- ---help---
+ help
Select this for an AMD Elan processor.
Do not use this option for K6/Athlon/Opteron processors!
@@ -222,19 +222,19 @@ config MELAN
config MGEODEGX1
bool "GeodeGX1"
depends on X86_32
- ---help---
+ help
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
depends on X86_32
- ---help---
+ help
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
depends on X86_32
- ---help---
+ 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
@@ -246,7 +246,7 @@ config MCYRIXIII
config MVIAC3_2
bool "VIA C3-2 (Nehemiah)"
depends on X86_32
- ---help---
+ 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.
@@ -254,14 +254,14 @@ config MVIAC3_2
config MVIAC7
bool "VIA C7"
depends on X86_32
- ---help---
+ help
Select this for a VIA C7. Selecting this uses the correct cache
shift and tells gcc to treat the CPU as a 686.
config MPSC
bool "Intel P4 / older Netburst based Xeon"
depends on X86_64
- ---help---
+ help
Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
Xeon CPUs with Intel 64bit which is compatible with x86-64.
Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the
@@ -271,7 +271,7 @@ config MPSC
config MCORE2
bool "Core 2/newer Xeon"
- ---help---
+ 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
@@ -280,7 +280,7 @@ config MCORE2
config MATOM
bool "Intel Atom"
- ---help---
+ help
Select this for the Intel Atom platform. Intel Atom CPUs have an
in-order pipelining architecture and thus can benefit from
@@ -290,7 +290,7 @@ config MATOM
config GENERIC_CPU
bool "Generic-x86-64"
depends on X86_64
- ---help---
+ help
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
@@ -299,7 +299,7 @@ endchoice
config X86_GENERIC
bool "Generic x86 support"
depends on X86_32
- ---help---
+ 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
@@ -397,14 +397,14 @@ config X86_VMX_FEATURE_NAMES
menuconfig PROCESSOR_SELECT
bool "Supported processor vendors" if EXPERT
- ---help---
+ help
This lets you choose what x86 vendor support code your kernel
will include.
config CPU_SUP_INTEL
default y
bool "Support Intel processors" if PROCESSOR_SELECT
- ---help---
+ help
This enables detection, tunings and quirks for Intel processors
You need this enabled if you want your kernel to run on an
@@ -418,7 +418,7 @@ config CPU_SUP_CYRIX_32
default y
bool "Support Cyrix processors" if PROCESSOR_SELECT
depends on M486SX || M486 || M586 || M586TSC || M586MMX || (EXPERT && !64BIT)
- ---help---
+ help
This enables detection, tunings and quirks for Cyrix processors
You need this enabled if you want your kernel to run on a
@@ -431,7 +431,7 @@ config CPU_SUP_CYRIX_32
config CPU_SUP_AMD
default y
bool "Support AMD processors" if PROCESSOR_SELECT
- ---help---
+ help
This enables detection, tunings and quirks for AMD processors
You need this enabled if you want your kernel to run on an
@@ -458,7 +458,7 @@ config CPU_SUP_HYGON
config CPU_SUP_CENTAUR
default y
bool "Support Centaur processors" if PROCESSOR_SELECT
- ---help---
+ help
This enables detection, tunings and quirks for Centaur processors
You need this enabled if you want your kernel to run on a
@@ -472,7 +472,7 @@ config CPU_SUP_TRANSMETA_32
default y
bool "Support Transmeta processors" if PROCESSOR_SELECT
depends on !64BIT
- ---help---
+ help
This enables detection, tunings and quirks for Transmeta processors
You need this enabled if you want your kernel to run on a
@@ -486,7 +486,7 @@ config CPU_SUP_UMC_32
default y
bool "Support UMC processors" if PROCESSOR_SELECT
depends on M486SX || M486 || (EXPERT && !64BIT)
- ---help---
+ help
This enables detection, tunings and quirks for UMC processors
You need this enabled if you want your kernel to run on a
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index fdf1431ac8c2..0dd319e6e5b4 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -9,7 +9,7 @@ config EARLY_PRINTK_USB
config X86_VERBOSE_BOOTUP
bool "Enable verbose x86 bootup info messages"
default y
- ---help---
+ help
Enables the informational output from the decompression stage
(e.g. bzImage) of the boot. If you disable this you will still
see errors. Disable this if you want silent bootup.
@@ -17,7 +17,7 @@ config X86_VERBOSE_BOOTUP
config EARLY_PRINTK
bool "Early printk" if EXPERT
default y
- ---help---
+ help
Write kernel log output directly into the VGA buffer or to a serial
port.
@@ -31,7 +31,7 @@ config EARLY_PRINTK_DBGP
bool "Early printk via EHCI debug port"
depends on EARLY_PRINTK && PCI
select EARLY_PRINTK_USB
- ---help---
+ help
Write kernel log output directly into the EHCI debug port.
This is useful for kernel debugging when your machine crashes very
@@ -44,7 +44,7 @@ config EARLY_PRINTK_USB_XDBC
bool "Early printk via the xHCI debug port"
depends on EARLY_PRINTK && PCI
select EARLY_PRINTK_USB
- ---help---
+ help
Write kernel log output directly into the xHCI debug port.
One use for this feature is kernel debugging, for example when your
@@ -66,7 +66,7 @@ config EFI_PGT_DUMP
bool "Dump the EFI pagetable"
depends on EFI
select PTDUMP_CORE
- ---help---
+ help
Enable this if you want to dump the EFI page table before
enabling virtual mode. This can be used to debug miscellaneous
issues with the mapping of the EFI runtime regions into that
@@ -75,7 +75,7 @@ config EFI_PGT_DUMP
config DEBUG_TLBFLUSH
bool "Set upper limit of TLB entries to flush one-by-one"
depends on DEBUG_KERNEL
- ---help---
+ help
X86-only for now.
@@ -95,7 +95,7 @@ config IOMMU_DEBUG
bool "Enable IOMMU debugging"
depends on GART_IOMMU && DEBUG_KERNEL
depends on X86_64
- ---help---
+ 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
@@ -110,7 +110,7 @@ config IOMMU_DEBUG
config IOMMU_LEAK
bool "IOMMU leak tracing"
depends on IOMMU_DEBUG && DMA_API_DEBUG
- ---help---
+ 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.
@@ -121,7 +121,7 @@ config X86_DECODER_SELFTEST
bool "x86 instruction decoder selftest"
depends on DEBUG_KERNEL && INSTRUCTION_DECODER
depends on !COMPILE_TEST
- ---help---
+ help
Perform x86 instruction decoder selftests at build time.
This option is useful for checking the sanity of x86 instruction
decoder code.
@@ -133,25 +133,25 @@ choice
config IO_DELAY_0X80
bool "port 0x80 based port-IO delay [recommended]"
- ---help---
+ help
This is the traditional Linux IO delay used for in/out_p.
It is the most tested hence safest selection here.
config IO_DELAY_0XED
bool "port 0xed based port-IO delay"
- ---help---
+ help
Use port 0xed as the IO delay. This frees up port 0x80 which is
often used as a hardware-debug port.
config IO_DELAY_UDELAY
bool "udelay based port-IO delay"
- ---help---
+ help
Use udelay(2) as the IO delay method. This provides the delay
while not having any side-effect on the IO port space.
config IO_DELAY_NONE
bool "no port-IO delay"
- ---help---
+ help
No port-IO delay. Will break on old boxes that require port-IO
delay for certain operations. Should work on most new machines.
@@ -161,19 +161,19 @@ config DEBUG_BOOT_PARAMS
bool "Debug boot parameters"
depends on DEBUG_KERNEL
depends on DEBUG_FS
- ---help---
+ help
This option will cause struct boot_params to be exported via debugfs.
config CPA_DEBUG
bool "CPA self-test code"
depends on DEBUG_KERNEL
- ---help---
+ help
Do change_page_attr() self-tests every 30 seconds.
config DEBUG_ENTRY
bool "Debug low-level entry code"
depends on DEBUG_KERNEL
- ---help---
+ help
This option enables sanity checks in x86's low-level entry code.
Some of these sanity checks may slow down kernel entries and
exits or otherwise impact performance.
@@ -183,7 +183,7 @@ config DEBUG_ENTRY
config DEBUG_NMI_SELFTEST
bool "NMI Selftest"
depends on DEBUG_KERNEL && X86_LOCAL_APIC
- ---help---
+ help
Enabling this option turns on a quick NMI selftest to verify
that the NMI behaves correctly.
@@ -195,7 +195,7 @@ config DEBUG_NMI_SELFTEST
config DEBUG_IMR_SELFTEST
bool "Isolated Memory Region self test"
depends on INTEL_IMR
- ---help---
+ help
This option enables automated sanity testing of the IMR code.
Some simple tests are run to verify IMR bounds checking, alignment
and overlapping. This option is really only useful if you are
@@ -208,7 +208,7 @@ config X86_DEBUG_FPU
bool "Debug the x86 FPU code"
depends on DEBUG_KERNEL
default y
- ---help---
+ help
If this option is enabled then there will be extra sanity
checks and (boot time) debug printouts added to the kernel.
This debugging adds some small amount of runtime overhead
@@ -221,7 +221,7 @@ config PUNIT_ATOM_DEBUG
depends on PCI
select DEBUG_FS
select IOSF_MBI
- ---help---
+ help
This is a debug driver, which gets the power states
of all Punit North Complex devices. The power states of
each device is exposed as part of the debugfs interface.
@@ -232,7 +232,7 @@ choice
prompt "Choose kernel unwinder"
default UNWINDER_ORC if X86_64
default UNWINDER_FRAME_POINTER if X86_32
- ---help---
+ help
This determines which method will be used for unwinding kernel stack
traces for panics, oopses, bugs, warnings, perf, /proc/<pid>/stack,
livepatch, lockdep, and more.
@@ -241,7 +241,7 @@ config UNWINDER_ORC
bool "ORC unwinder"
depends on X86_64
select STACK_VALIDATION
- ---help---
+ help
This option enables the ORC (Oops Rewind Capability) unwinder for
unwinding kernel stack traces. It uses a custom data format which is
a simplified version of the DWARF Call Frame Information standard.
@@ -256,7 +256,7 @@ config UNWINDER_ORC
config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
select FRAME_POINTER
- ---help---
+ help
This option enables the frame pointer unwinder for unwinding kernel
stack traces.
@@ -268,7 +268,7 @@ config UNWINDER_GUESS
bool "Guess unwinder"
depends on EXPERT
depends on !STACKDEPOT
- ---help---
+ help
This option enables the "guess" unwinder for unwinding kernel stack
traces. It scans the stack and reports every kernel text address it
finds. Some of the addresses it reports may be incorrect.
diff --git a/arch/x86/events/Kconfig b/arch/x86/events/Kconfig
index 4a809c6cbd2f..39d9ded9e25a 100644
--- a/arch/x86/events/Kconfig
+++ b/arch/x86/events/Kconfig
@@ -5,7 +5,7 @@ config PERF_EVENTS_INTEL_UNCORE
tristate "Intel uncore performance events"
depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
default y
- ---help---
+ help
Include support for Intel uncore performance events. These are
available on NehalemEX and more modern processors.
@@ -13,7 +13,7 @@ config PERF_EVENTS_INTEL_RAPL
tristate "Intel/AMD rapl performance events"
depends on PERF_EVENTS && (CPU_SUP_INTEL || CPU_SUP_AMD) && PCI
default y
- ---help---
+ help
Include support for Intel and AMD rapl performance events for power
monitoring on modern processors.
@@ -21,14 +21,14 @@ config PERF_EVENTS_INTEL_CSTATE
tristate "Intel cstate performance events"
depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
default y
- ---help---
+ help
Include support for Intel cstate performance events for power
monitoring on modern processors.
config PERF_EVENTS_AMD_POWER
depends on PERF_EVENTS && CPU_SUP_AMD
tristate "AMD Processor Power Reporting Mechanism"
- ---help---
+ help
Provide power reporting mechanism support for AMD processors.
Currently, it leverages X86_FEATURE_ACC_POWER
(CPUID Fn8000_0007_EDX[12]) interface to calculate the
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index d8154e0684b6..b277a2db6267 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -9,7 +9,7 @@ menuconfig VIRTUALIZATION
bool "Virtualization"
depends on HAVE_KVM || X86
default y
- ---help---
+ help
Say Y here to get to see options for using your Linux host to run other
operating systems inside virtual machines (guests).
This option alone does not add any kernel code.
@@ -45,7 +45,7 @@ config KVM
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select KVM_VFIO
select SRCU
- ---help---
+ help
Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent
processor equipped with virtualization extensions. You will also
@@ -75,7 +75,7 @@ config KVM_WERROR
config KVM_INTEL
tristate "KVM for Intel (and compatible) processors support"
depends on KVM && IA32_FEAT_CTL
- ---help---
+ help
Provides support for KVM on processors equipped with Intel's VT
extensions, a.k.a. Virtual Machine Extensions (VMX).
@@ -85,7 +85,7 @@ config KVM_INTEL
config KVM_AMD
tristate "KVM for AMD processors support"
depends on KVM
- ---help---
+ help
Provides support for KVM on AMD processors equipped with the AMD-V
(SVM) extensions.
@@ -97,13 +97,13 @@ config KVM_AMD_SEV
bool "AMD Secure Encrypted Virtualization (SEV) support"
depends on KVM_AMD && X86_64
depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
- ---help---
+ help
Provides support for launching Encrypted VMs on AMD processors.
config KVM_MMU_AUDIT
bool "Audit KVM MMU"
depends on KVM && TRACEPOINTS
- ---help---
+ help
This option adds a R/W kVM module parameter 'mmu_audit', which allows
auditing of KVM MMU events at runtime.
diff --git a/arch/x86/ras/Kconfig b/arch/x86/ras/Kconfig
index 9ad6842de4b4..7488c715427e 100644
--- a/arch/x86/ras/Kconfig
+++ b/arch/x86/ras/Kconfig
@@ -2,7 +2,7 @@
config RAS_CEC
bool "Correctable Errors Collector"
depends on X86_MCE && MEMORY_FAILURE && DEBUG_FS
- ---help---
+ help
This is a small cache which collects correctable memory errors per 4K
page PFN and counts their repeated occurrence. Once the counter for a
PFN overflows, we try to soft-offline that page as we take it to mean