Lines Matching +full:0 +full:x86
1 acpi= [HW,ACPI,X86,ARM64]
21 1,0: use 1st APIC table
22 default: 0
62 acpi.debug_layer=0x20000000
65 acpi.debug_layer=0xffffffff acpi.debug_level=0x2
67 acpi.debug_layer=0x2 acpi.debug_level=0xffffffff
91 By default, this is disabled due to x86 early mapping
215 acpi_pm_good [X86]
253 add_efi_memmap [EFI; X86] Include EFI memory map in
267 behaviour to be specified. Bit 0 enables warnings,
270 align_va_addr= [X86-64]
301 amd_iommu= [HW,X86-64]
316 amd_iommu_dump= [HW,X86-64]
322 amd_iommu_intr= [HW,X86-64]
348 apic= [APIC,X86] Advanced Programmable Interrupt Controller
353 For X86-32, this can also be used to specify an APIC
358 apic_extnmi= [APIC,X86] External NMI delivery setting
360 bsp: External NMI is delivered only to CPU 0
362 backup of CPU 0
370 show_lapic= [APIC,X86] Advanced Programmable Interrupt Controller
380 See header of arch/x86/kernel/apm_32.c.
410 Format: <bool> (0 = real, 1 = synthetic (default))
416 Format: { "0" | "1" | "off" | "on" }
417 0 | off - kernel audit is disabled and can not be
428 Format: <int> (must be >=0)
432 behavior is to disable the BAU (i.e. bau=0).
433 Format: { "0" | "1" }
434 0 - Disable the BAU.
461 no delay (0).
473 bgrt_disable [ACPI][X86]
488 cachesize= [BUGS=X86-32] Override level 2 CPU cache size detection.
506 algorithm. Accepted values range from 0 to 7
545 Format: { "0" | "1" }
547 0 -- check protection applied by kernel (includes
569 clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
586 [X86-32] pit,hpet,tsc;
593 [X86-64] hpet,tsc
625 clearcpuid=BITNUM[,BITNUM...] [X86]
627 arch/x86/include/asm/cpufeatures.h for the valid bit
643 memory allocations. A value of 0 disables CMA
650 contiguous memory allocations. A value of 0 disables
652 specificed, the default value is 0.
704 uart[8250],0x<addr>[,options]
738 seconds. A value of 0 disables the blank timer.
739 Defaults to 0.
750 0: default value, disable debugging
768 [X86] Delay for N microsec between assert and de-assert
783 [KNL, X86-64] Select a region under 4G first, and
796 [KNL, X86-64] range could be above 4G. Allow kernel
803 [KNL, X86-64] range under 4G. When crashkernel=X,high
813 0: to disable low allocation.
831 0: disable csdlock debugging (default)
864 Bitmask for the various LOCKTYPE_ tests. Defaults to 0
917 debugpat [X86] Enable PAT debugging
938 drivers) that have opted in will be ignored. A timeout of 0
994 disable_cpu_apicid= [X86,APIC,SMP]
1010 disable_mtrr_cleanup [X86]
1015 disable_mtrr_trim [X86, Intel and AMD only]
1021 disable_timer_pin_1 [X86]
1025 dis_ucode_ldr [X86] Disable the microcode loader.
1077 dump_apple_properties [X86]
1079 x86 Macs. Useful for driver authors to determine
1088 nopku [X86] Disable Memory Protection Keys CPU feature found
1117 uart[8250],0x<addr>[,options]
1223 coherent non-x86 systems that use system memory for
1233 earlyprintk= [X86,SH,ARM,M68k,S390]
1238 earlyprintk=serial[,0x...[,baudrate]]
1256 on some architectures (x86 and arm at least) by
1258 earlyprintk=serial,0x1008,115200
1285 ekgdboc= [X86,KGDB] Allow early kernel console debugging
1320 efi_no_storage_paranoia [EFI; X86]
1326 efi_fake_mem= nn[KMG]@ss[KMG]:aa[,nn[KMG]@ss[KMG]:aa,..] [EFI; X86]
1332 If efi_fake_mem=2G@4G:0x10000,2G@0x10a0000000:0x10000
1333 is specified, EFI_MEMORY_MORE_RELIABLE(0x10000)
1334 attribute is added to range 0x100000000-0x180000000 and
1335 0x10a0000000-0x1120000000.
1337 If efi_fake_mem=8G@9G:0x40000 is specified, the
1338 EFI_MEMORY_SP(0x40000) attribute is added to
1339 range 0x240000000-0x43fffffff.
1347 efivar_ssdt= [EFI; X86] Name of an EFI variable that contains an SSDT
1357 elanfreq= [X86-32]
1359 arch/x86/kernel/cpu/cpufreq/elanfreq.c.
1361 elfcorehdr=[size[KMG]@]offset[KMG] [IA64,PPC,SH,X86,S390]
1367 enable_mtrr_cleanup [X86]
1372 enable_timer_pin_1 [X86]
1379 Format: {"0" | "1"}
1381 0 -- permissive (log only, no denials).
1383 Default value is 0.
1422 forcepae [X86-32]
1471 in the tracefs tracing directory. default: 0 (no limit)
1504 gart_fix_e820= [X86-64] disable the fix e820 for K8 GART
1514 goldfish [X86] Enable the goldfish android emulator platform.
1529 grcan.enable0= [HW] Configuration of physical interface 0. Determines
1530 the "Enable 0" bit of the configuration register.
1531 Format: 0 | 1
1532 Default: 0
1534 the "Enable 0" bit of the configuration register.
1535 Format: 0 | 1
1536 Default: 0
1538 Format: 0 | 1
1539 Default: 0
1541 Format: <unsigned int> such that (txsize & ~0x1fffc0) == 0.
1544 Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
1550 Format: 0 | 1
1555 Format: 0 | 1 (for off | on)
1578 hpet= [X86-32,HPET] option to control HPET usage
1586 hpet_mmap= [X86, HPET_MMAP] Allow userspace to mmap HPET
1635 Format: 0 | 1
1644 terminal devices. Valid values: 0..8
1649 hv_nopvspin [X86,HYPER_V] Disables the paravirt spinlock optimizations
1686 Format: { 1 | Y | y | 0 | N | n }
1688 0, N, n: don't ever reset controller
1689 Default: only on s2r transitions on x86; most other
1710 brightness value of 0 indicates backlight switched off,
1712 to maximum brightness. If this parameter is set to 0
1714 is set to 1, a brightness value of 0 sets the backlight
1718 0 -- machine default
1735 default value is 0x0, which has a special meaning.
1739 of 0x0 enables probing the two first ports as if it
1740 was 0x3.
1745 idle= [X86]
1764 for the device. By default it is set to false (0).
1822 owned by uid=0.
1843 mode bit set by either the effective uid (euid=0) or
1844 uid=0.
1865 opened for read by uid=0.
1925 Default is 0, 0
1929 Format: 0 | 1
1933 Format: 0 | 1
1936 init_pkru= [X86] Specify the default memory protection keys rights
1937 register contents for all processes. 0x55555554 by
1938 default (disallow access to all but pkey 0). Can
1944 int_pln_enable [X86] Enable power limit notification interrupt
1947 Format: { "0" | "1" }
1948 0 -- basic integrity auditing messages. (Default)
1984 intel_idle.max_cstate= [KNL,HW,ACPI,X86]
1985 0 disables intel_idle and fall back on acpi_idle.
1988 intel_pstate= [X86]
2022 intremap= [X86-64, Intel-IOMMU]
2034 iommu= [X86]
2044 pt [X86]
2045 nopt [X86]
2049 iommu.forcedac= [ARM64, X86] Control IOVA allocation for PCI devices.
2050 Format: { "0" | "1" }
2051 0 - Try to allocate a 32-bit DMA address first, before
2057 iommu.strict= [ARM64, X86] Configure TLB invalidation behaviour
2058 Format: { "0" | "1" }
2059 0 - Lazy mode.
2069 Note: on x86, strict mode specified via one of the
2073 [ARM64, X86] Configure DMA to bypass the IOMMU by default.
2074 Format: { "0" | "1" }
2075 0 - Use IOMMU translation for DMA.
2083 io_delay= [X86] I/O delay method
2084 0x80
2085 Standard port 0x80 based delay
2086 0xed
2087 Alternate port 0xed based delay (needed on some systems)
2168 <cpu number> begins at 0 and the maximum value is
2199 ivrs_ioapic [HW,X86-64]
2206 ivrs_hpet [HW,X86-64]
2209 example, to map HPET-ID decimal 0 to
2211 ivrs_hpet[0]=00:14.0
2213 ivrs_acpihid [HW,X86-64]
2216 example, to map UART-HID:UID AMD0020:0 to
2218 ivrs_acpihid[00:14.5]=AMD0020:0
2236 kernelcore= [KNL,X86,IA-64,PPC]
2326 0: force disabled
2330 Default is 0 (don't ignore, but inject #GP)
2337 Default is 0 (off)
2354 back to huge pages. 0 disables the recovery, otherwise if
2378 [KVM,ARM] Trap guest accesses to GICv3 group-0
2407 Default is 0 (disabled)
2415 Default is 0 (disabled)
2438 l1d_flush= [X86,INTEL]
2455 l1tf= [X86] Control mitigation of the L1TF vulnerability on
2524 lapic [X86-32,APIC] Enable the local APIC even if BIOS
2527 lapic= [X86,APIC] Do not use TSC deadline
2532 lapic_timer_c2_ok [X86,APIC] trust the local apic timer
2536 libata.dma=0 Disable all PATA and SATA DMA
2544 libata.ignore_hpa=0 keep BIOS limits (default)
2562 number of 0 either selects the first device or the
2577 * Transfer mode: pio[0-7], mwdma[0-4] and udma[0-7].
2673 0 (KERN_EMERG) system is unusable
2695 lp=0 [LP] Specify parallel ports to use, e.g,
2697 lp=reset first parallel port). 'lp=0' disables the
2715 CPU). 0 enables autodetection (default). To determine
2747 will bring up during bootup. maxcpus=n : n >= 0 limits
2752 While n=0 is a special case, it is equivalent to "nosmp",
2762 mce [X86-32] Machine Check Exception
2764 mce=option [X86-64] See Documentation/x86/x86_64/boot-options.rst
2773 mds= [X86,INTEL]
2813 [X86] Work as limiting max address. Use together
2822 mem=nopentium [BUGS=X86-32] Disable usage of 4MB pages for kernel
2837 memmap=exactmap [KNL,X86] Enable setting of an exact
2844 [KNL, X86, MIPS, XTENSA] Force usage of a specific region of memory.
2860 Example: Exclude memory from 0x18690000-0x1869ffff
2861 memmap=64K$0x18690000
2863 memmap=0x10000$0x18690000
2869 [KNL,X86] Mark specific memory as protected.
2871 The memory region may be marked as e820 type 12 (0xc)
2883 memory_corruption_check=0/1 [X86]
2895 memory_corruption_check_size=size [X86]
2901 memory_corruption_check_period=seconds [X86]
2904 other rate. 0 disables periodic checking.
2907 [KNL,X86,ARM] Boolean flag to enable this feature.
2927 memtest= [KNL,X86,ARM,PPC,RISCV] Enable memtest
2929 default : 0 <disable>
2937 mem_encrypt= [X86-64] AMD Secure Memory Encryption (SME) control
2961 mfgptfix [X86-32] Fix MFGPT timers on AMD Geode platforms when
2972 Format:[0..2][b][c][t]
2973 Default: "0tb"
2975 0 - The attached screen is the 3.5" TFT
2993 [X86,PPC,S390,ARM64] Control optional mitigations for
3002 Equivalent to: nopti [X86,PPC]
3003 kpti=0 [ARM64]
3004 nospectre_v1 [X86,PPC]
3005 nobp=0 [S390]
3006 nospectre_v2 [X86,PPC,S390,ARM64]
3007 spectre_v2_user=off [X86]
3008 spec_store_bypass_disable=off [X86,PPC]
3010 l1tf=off [X86]
3011 mds=off [X86]
3012 tsx_async_abort=off [X86]
3013 kvm.nx_huge_pages=off [X86]
3034 Equivalent to: l1tf=flush,nosmt [X86]
3035 mds=full,nosmt [X86]
3036 tsx_async_abort=full,nosmt [X86]
3042 of 0 disables mminit logging and a level of 4 will
3066 movablecore= [KNL,X86,IA-64,PPC]
3104 1 indicates lock status, 0 indicates unlock status.
3115 mtrr_chunk_size=nn[KMG] [X86]
3119 mtrr_gran_size=nn[KMG] [X86]
3125 mtrr_spare_reg_nr=n [X86]
3127 Range: 0,7 : spare reg number
3143 0 to disable accounting
3145 Default value is 0.
3210 To turn off this behaviour, set the value to '0'.
3234 The default parameter value of '0' causes the kernel
3241 Setting this to value to 0 causes the kernel to use
3261 nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels
3263 Valid num: 0 or 1
3264 0 - turn hardlockup detector in nmi_watchdog off
3282 no387 [BUGS=X86-32] Tells the kernel to use the 387 maths
3286 no5lvl [X86-64] Disable 5-level paging mode. Forces
3289 nofsgsbase [X86] Disables FSGSBASE instructions.
3336 noclflush [BUGS=X86] Don't use the CLFLUSH instruction
3348 noexec [X86]
3349 On X86-32 available only on PAE configured kernels.
3353 nosmap [X86,PPC]
3357 nosmep [X86,PPC]
3361 noexec32 [X86-64]
3370 nofxsr [BUGS=X86-32] Disables x86 floating point extended
3374 nohugeiomap [KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings.
3381 [KNL,X86] Disable symmetric multithreading (SMT).
3385 nospectre_v1 [X86,PPC] Disable mitigations for Spectre Variant 1
3389 nospectre_v2 [X86,PPC_FSL_BOOK3E,ARM64] Disable all mitigations for
3400 noxsave [BUGS=X86] Disables x86 extended register state save
3404 noxsaveopt [X86] Disables xsaveopt used in saving x86 extended
3411 noxsaves [X86] Disables xsaves and xrstors used in saving and
3412 restoring x86 extended register state in compacted
3472 noirqdebug [X86-32] Disables the code which attempts to detect and
3475 no_timer_check [X86,APIC] Disables the code which tests for
3483 nointremap [X86-64, Intel-IOMMU] Do not enable interrupt
3489 noinvpcid [X86] Disable the INVPCID cpu feature.
3493 no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver
3495 no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page
3499 [X86,PV_OPS] Disable paravirtualized VMware scheduler
3502 no-steal-acc [X86,PV_OPS,ARM64] Disable paravirtualized steal time
3506 nolapic [X86-32,APIC] Do not enable or use the local APIC.
3508 nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
3515 nomce [X86-32] Disable Machine Check Exception
3517 nomfgpt [X86-32] Disable Multi-Function General Purpose
3520 nonmi_ipi [X86] Disable using NMI IPIs during panic/reboot to
3526 nopat [X86] Disable PAT (page attribute table extension of
3529 nopcid [X86-64] Disable the PCID cpu feature.
3532 echo 0 > /proc/sys/kernel/randomize_va_space
3534 noreplace-smp [X86-32,SMP] Don't replace SMP instructions
3537 nordrand [X86] Disable kernel use of the RDRAND and
3551 nosep [BUGS=X86-32] Disables x86 SYSENTER/SYSEXIT support.
3553 nosgx [X86-64,SGX] Disables Intel SGX kernel support.
3556 and disable the IO APIC. legacy for "maxcpus=0".
3567 nox2apic [X86-64,APIC] Do not enable x2APIC mode.
3569 cpu0_hotplug [X86] Turn on CPU0 hotplug feature when
3607 numa=off [KNL, ARM64, PPC, RISCV, SPARC, X86] Disable NUMA, Only
3610 numa_balancing= [KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
3633 omap_mux=i2c2_scl.i2c2_scl=0x100,i2c2_sda.i2c2_sda=0x100
3670 timeout > 0: seconds before rebooting
3671 timeout = 0: wait forever
3672 timeout < 0: reboot immediately
3677 bit 0: print all tasks info
3709 connected to, default is 0.
3712 0 for XT, 1 for AT (default is AT).
3715 parport= [HW,PPT] Specify parallel ports. 0 disables.
3716 Format: { 0 | auto | 0xBBB[,IRQ[,DMA]] }
3763 for the respective channel. Bit 0 is for the first
3788 Bit 0 is for mode 0, bit 1 is for mode 1, and so on.
3800 options up to 6 legacy ports are supported: 0x1f0,
3801 0x170, 0x1e8, 0x168, 0x1e0, 0x160, however probing
3803 corresponding bits in the mask to 1. Bit 0 is for
3804 the first port in the list above (0x1f0), and so on.
3810 set to 1 if CONFIG_PATA_QDI_MODULE, 0 otherwise.
3815 the standard I/O port (0x130) if 1, otherwise the
3816 value given is the I/O port to use (typically 0x1b0).
3818 0 otherwise.
3823 the use of the respective PIO modes. Bit 0 is for
3824 mode 0, bit 1 is for mode 1, and so on. Mode 0 only
3864 off [X86] don't probe for the PCI bus
3865 bios [X86-32] force use of PCI BIOS, don't access
3868 nobios [X86-32] disallow use of PCI BIOS, only direct
3872 conf1 [X86] Force use of PCI Configuration Access
3873 Mechanism 1 (config address in IO port 0xCF8,
3874 data in IO port 0xCFC, both 32-bit).
3875 conf2 [X86] Force use of PCI Configuration Access
3876 Mechanism 2 (IO port 0xCF8 is an 8-bit port for
3877 the function, IO port 0xCFA, also 8-bit, sets
3879 through ports 0xC000-0xCFFF).
3887 nommconf [X86] Disable use of MMCONFIG for PCI
3889 check_enable_amd_mmconf [X86] check for and enable
3906 biosirq [X86-32] Use PCI BIOS calls to get the interrupt
3914 rom [X86] Assign address space to expansion ROMs.
3918 norom [X86] Do not assign address space to
3921 nobar [X86] Do not assign address space to the
3923 irqmask=0xMMMM [X86] Set a bit mask of IRQs allowed to be
3927 pirqaddr=0xAAAAA [X86] Specify the physical address
3931 lastbus=N [X86] Scan all buses thru bus #N. Can be
3935 assign-busses [X86] Always assign all PCI bus
3938 usepirqmask [X86] Honor the possible IRQ mask stored
3944 noacpi [X86] Do not use ACPI for IRQ routing
3946 use_crs [X86] Use PCI host bridge window information
3950 nocrs [X86] Ignore PCI host bridge windows from ACPI.
3956 skip_isa_align [X86] do not align io start addr, so can
3958 noearly [X86] Don't do any early type 1 scanning.
4096 Format: { 0 | 1 }
4113 See Documentation/x86/i386/IO-APIC.rst.
4116 Format: { parport<nr> | timid | 0 }
4119 pmtmr= [X86] Manual setup of pmtmr I/O Port.
4121 e.g. pmtmr=0x508
4198 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4205 serial console, keeping this 0 is a good choice
4208 default: 0 (auto_verbose is enabled)
4218 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4256 (0 = never).
4261 0 = disabled, 1 = enabled (default).
4268 pti= [X86-64] Control Page Table Isolation of user and
4280 nopti [X86-64]
4313 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4318 cec_disable [X86]
4374 Specify rcutree.use_softirq=0 to use rcuc kthreads.
4405 of permitted values is in the range 0:100000.
4440 RCU_BOOST is not set, valid values are 0-99 and
4717 Test RCU priority boosting? 0=no, 1=maybe, 2=yes.
4804 rdrand= [X86]
4811 rdt= [HW,X86,RDT]
4819 Format (x86 or x86_64):
4844 x86 laptops.
4865 refscale is built into the kernel and to 0 (leave
4884 them. If <base> is less than 0x10000, the region
4887 reservetop= [X86-32]
4925 0 "airplane mode". All wifi, bluetooth, wimax, gps, fm,
4930 0 The "airplane mode" button does nothing.
4990 schedstats= [KNL,X86] Enable or disable scheduled statistics.
5008 Format: integer between 0 and 10
5009 Default is 0.
5106 Format: { "0" | "1" }
5107 0 -- disable. (may be 1 via CONFIG_CMDLINE="skew_tick=1"
5117 Format: { "0" | "1" }
5119 0 -- disable.
5124 Format: { "0" | "1" }
5126 0 -- disable.
5130 serialnumber [BUGS=X86-32]
5161 more than 32MB of RAM, 0 otherwise.
5208 0: Toshiba Satellite 1800 (GP data pin select)
5221 Format: 0 | 1
5232 Format: 0 | 1
5237 spectre_v2= [X86] Control mitigation of Spectre variant 2
5271 [X86] Control mitigation of Spectre variant 2
5333 On x86 the options are:
5351 X86: If CONFIG_SECCOMP=y "seccomp", otherwise "prctl"
5370 [X86] Enable split lock detection or bus lock detection
5396 0 < N <= 1000.
5407 CPL > 0.
5409 srbds= [X86,INTEL]
5505 range 0 < portnr < 1024).
5516 The default value is 0 (no limit).
5551 Format: { on | off | y | n | 1 | 0 }
5555 swapaccount=[0|1]
5558 it if 0 is given (See Documentation/admin-guide/cgroup-v1/memory.rst)
5560 swiotlb= [ARM,IA-64,PPC,MIPS,X86]
5578 sysfs.deprecated=0|1 [KNL]
5636 0: no polling (default)
5719 echo 0 > /proc/sys/kernel/tracepoint_printk
5777 [x86] reliable: mark tsc clocksource as reliable, this
5782 [x86] noirqtime: Do not use TSC to do irq accounting.
5786 [x86] unstable: mark the TSC clocksource as unstable, this
5789 [x86] nowatchdog: disable clocksource watchdog. Used
5794 tsc_early_khz= [X86] Skip early TSC calibration and use the given
5800 tsx= [X86] Control Transactional Synchronization
5829 tsx_async_abort= [X86,INTEL] Control mitigation for the TSX Async
5893 [X86] Cause panic on unknown NMI.
5898 0 = not authorized, 1 = authorized, 2 = authorized
5909 [USB] Set to log all usbfs traffic (default 0 = off).
5916 [USB] Set to cycle leds on hubs (default 0 = off).
5920 scheme (default 0 = off).
5924 usbfs (default = 16, 0 = max = 2047).
5995 Example: quirks=0781:5580:bk,0a5c:5834:gij
6076 [X86] Flags controlling user PTE allocations.
6082 vdso= [X86,SH]
6086 vdso=0: disable VDSO mapping
6088 vdso32= [X86] Control the 32-bit vDSO
6090 vdso32=0 or vdso32=2: disable 32-bit VDSO
6094 vdso32=0; otherwise, the default is vdso32=1.
6097 alias for vdso32=0.
6099 Try vdso32=0 if you encounter an error that says:
6108 video.brightness_switch_enabled= [0,1]
6112 the allocated input device; If set to 0, video driver
6129 virtio_mmio.device=1K@0x100b0000:48:7
6133 vga= [BOOT,X86-32] Select a particular video mode
6134 See Documentation/x86/boot.rst and
6154 minimum size (128MB on x86). It can also be used to
6171 vsyscall= [X86-64]
6173 fixed addresses of 0xffffffffff600x00 from legacy
6192 Format: 0xYX, X = foreground, Y = background.
6193 Default: 0x07 = light gray on black.
6196 Format: 0xCCBBAA, where AA, BB, and CC are the same as
6204 ranging from 0-255.
6210 ranging from 0-255.
6216 ranging from 0-255.
6220 Format=<0|1>
6227 Format=<-1|0|1>
6231 overridden by individual drivers. 0 will hide
6234 vt.italic= [VT] Default color for italic text; 0-15.
6237 vt.underline= [VT] Default color for underlined text; 0-15.
6249 threshold is set to twice the value. A value of 0
6256 help debugging. 0 disables workqueue stall
6297 x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
6301 xen_512gb_limit [KNL,X86-64,XEN]
6308 xen_emul_unplug= [HW,X86,XEN]
6320 xen_legacy_crash [X86,XEN]
6324 xen_nopvspin [X86,XEN]
6329 xen_nopv [X86]
6336 [KNL,X86,XEN] Disable the vector callback for Xen
6345 xen_timer_slop= [X86-64,XEN]
6367 nopv= [X86,XEN,KVM,HYPER_V,VMWARE]
6372 nopvspin [X86,XEN,KVM]