Lines Matching +full:0 +full:x86
1 acpi= [HW,ACPI,X86,ARM64,RISCV64]
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]
262 add_efi_memmap [EFI; X86] Include EFI memory map in
276 behaviour to be specified. Bit 0 enables warnings,
279 align_va_addr= [X86-64]
310 amd_iommu= [HW,X86-64]
328 amd_iommu_dump= [HW,X86-64]
334 amd_iommu_intr= [HW,X86-64]
343 amd_pstate= [X86]
356 to bias toward performance (0x0) or energy efficiency (0xff)
383 apic= [APIC,X86] Advanced Programmable Interrupt Controller
388 For X86-32, this can also be used to specify an APIC
393 apic_extnmi= [APIC,X86] External NMI delivery setting
395 bsp: External NMI is delivered only to CPU 0
397 backup of CPU 0
406 See header of arch/x86/kernel/apm_32.c.
409 Format: { "0" | "1" }
411 0 -- disable.
452 Format: <bool> (0 = real, 1 = synthetic (default))
458 Format: { "0" | "1" | "off" | "on" }
459 0 | off - kernel audit is disabled and can not be
470 Format: <int> (must be >=0)
474 behavior is to disable the BAU (i.e. bau=0).
475 Format: { "0" | "1" }
476 0 - Disable the BAU.
500 bgrt_disable [ACPI][X86]
532 cachesize= [BUGS=X86-32] Override level 2 CPU cache size detection.
550 algorithm. Accepted values range from 0 to 7
590 Format: { "0" | "1" }
592 0 -- check protection applied by kernel (includes
603 clearcpuid=X[,X...] [X86]
605 arch/x86/include/asm/cpufeatures.h for the valid bit
633 clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
650 [X86-32] pit,hpet,tsc;
657 [X86-64] hpet,tsc
688 memory allocations. A value of 0 disables CMA
695 contiguous memory allocations. A value of 0 disables
697 specified, the default value is 0.
740 Format: y|n|Y|N|1|0
771 uart[8250],0x<addr>[,options]
811 seconds. A value of 0 disables the blank timer.
812 Defaults to 0.
823 0: default value, disable debugging
845 [X86] Delay for N microsec between assert and de-assert
870 [KNL, X86-64, ARM64, RISCV] Select a region under 4G first, and
883 [KNL, X86-64, ARM64, RISCV] range could be above 4G.
890 [KNL, X86-64, ARM64, RISCV] range under 4G. When crashkernel=X,high
899 --> x86: max(swiotlb_size_or_default() + 8MiB, 256MiB)
904 0: to disable low allocation.
949 Bitmask for the various LOCKTYPE_ tests. Defaults to 0
999 debugpat [X86] Enable PAT debugging
1017 of 0 will timeout at the end of initcalls. If the time
1080 disable_cpu_apicid= [X86,APIC,SMP]
1096 disable_mtrr_cleanup [X86]
1101 disable_mtrr_trim [X86, Intel and AMD only]
1107 disable_timer_pin_1 [X86]
1111 dis_ucode_ldr [X86] Disable the microcode loader.
1131 [X86] Controls mitigation for Register File Data
1186 dump_apple_properties [X86]
1188 x86 Macs. Useful for driver authors to determine
1220 uart[8250],0x<addr>[,options]
1328 coherent non-x86 systems that use system memory for
1338 earlyprintk= [X86,SH,ARM,M68k,S390]
1343 earlyprintk=serial[,0x...[,baudrate]]
1361 on some architectures (x86 and arm at least) by
1363 earlyprintk=serial,0x1008,115200
1414 efi_no_storage_paranoia [EFI; X86]
1420 efi_fake_mem= nn[KMG]@ss[KMG]:aa[,nn[KMG]@ss[KMG]:aa,..] [EFI; X86]
1426 If efi_fake_mem=2G@4G:0x10000,2G@0x10a0000000:0x10000
1427 is specified, EFI_MEMORY_MORE_RELIABLE(0x10000)
1428 attribute is added to range 0x100000000-0x180000000 and
1429 0x10a0000000-0x1120000000.
1431 If efi_fake_mem=8G@9G:0x40000 is specified, the
1432 EFI_MEMORY_SP(0x40000) attribute is added to
1433 range 0x240000000-0x43fffffff.
1441 efivar_ssdt= [EFI; X86] Name of an EFI variable that contains an SSDT
1451 ekgdboc= [X86,KGDB] Allow early kernel console debugging
1462 elanfreq= [X86-32]
1464 arch/x86/kernel/cpu/cpufreq/elanfreq.c.
1466 elfcorehdr=[size[KMG]@]offset[KMG] [IA64,PPC,SH,X86,S390]
1472 enable_mtrr_cleanup [X86]
1477 enable_timer_pin_1 [X86]
1484 Format: {"0" | "1"}
1486 0 -- permissive (log only, no denials).
1488 Default value is 0.
1535 forcepae [X86-32]
1601 in the tracefs tracing directory. default: 0 (no limit)
1648 gart_fix_e820= [X86-64] disable the fix e820 for K8 GART
1653 [X86,INTEL] Control the Gather Data Sampling (GDS)
1678 goldfish [X86] Enable the goldfish android emulator platform.
1693 grcan.enable0= [HW] Configuration of physical interface 0. Determines
1694 the "Enable 0" bit of the configuration register.
1695 Format: 0 | 1
1696 Default: 0
1698 the "Enable 0" bit of the configuration register.
1699 Format: 0 | 1
1700 Default: 0
1702 Format: 0 | 1
1703 Default: 0
1705 Format: <unsigned int> such that (txsize & ~0x1fffc0) == 0.
1708 Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
1725 Format: 0 | 1
1730 Format: 0 | 1 (for off | on)
1775 hpet= [X86-32,HPET] option to control HPET usage
1783 hpet_mmap= [X86, HPET_MMAP] Allow userspace to mmap HPET
1839 Format: 0 | 1
1848 terminal devices. Valid values: 0..8
1853 hv_nopvspin [X86,HYPER_V] Disables the paravirt spinlock optimizations
1884 Format: { 1 | Y | y | 0 | N | n }
1886 0, N, n: don't ever reset controller
1887 Default: only on s2r transitions on x86; most other
1899 brightness value of 0 indicates backlight switched off,
1901 to maximum brightness. If this parameter is set to 0
1903 is set to 1, a brightness value of 0 sets the backlight
1907 0 -- machine default
1914 idle= [X86]
1933 for the device. By default it is set to false (0).
1991 owned by uid=0.
2012 mode bit set by either the effective uid (euid=0) or
2013 uid=0.
2034 opened for read by uid=0.
2063 indirect_target_selection= [X86,Intel] Mitigation control for Indirect
2112 Default is 0, 0
2116 Format: 0 | 1
2120 Format: 0 | 1
2123 init_pkru= [X86] Specify the default memory protection keys rights
2124 register contents for all processes. 0x55555554 by
2125 default (disallow access to all but pkey 0). Can
2131 int_pln_enable [X86] Enable power limit notification interrupt
2134 Format: { "0" | "1" }
2135 0 -- basic integrity auditing messages. (Default)
2171 intel_idle.max_cstate= [KNL,HW,ACPI,X86]
2172 0 disables intel_idle and fall back on acpi_idle.
2175 intel_pstate= [X86]
2219 intremap= [X86-64, Intel-IOMMU]
2231 iommu= [X86]
2241 pt [X86]
2242 nopt [X86]
2246 iommu.forcedac= [ARM64, X86] Control IOVA allocation for PCI devices.
2247 Format: { "0" | "1" }
2248 0 - Try to allocate a 32-bit DMA address first, before
2254 iommu.strict= [ARM64, X86] Configure TLB invalidation behaviour
2255 Format: { "0" | "1" }
2256 0 - Lazy mode.
2266 Note: on x86, strict mode specified via one of the
2270 [ARM64, X86] Configure DMA to bypass the IOMMU by default.
2271 Format: { "0" | "1" }
2272 0 - Use IOMMU translation for DMA.
2280 io_delay= [X86] I/O delay method
2281 0x80
2282 Standard port 0x80 based delay
2283 0xed
2284 Alternate port 0xed based delay (needed on some systems)
2365 <cpu number> begins at 0 and the maximum value is
2396 ivrs_ioapic [HW,X86-64]
2399 By default, PCI segment is 0, and can be omitted.
2402 PCI segment 0x1 and PCI device 00:14.0,
2410 * To map IOAPIC-ID decimal 10 to PCI segment 0x1 and
2414 ivrs_hpet [HW,X86-64]
2417 By default, PCI segment is 0, and can be omitted.
2420 PCI segment 0x1 and PCI device 00:14.0,
2425 * To map HPET-ID decimal 0 to PCI device 00:14.0
2427 ivrs_hpet[0]=00:14.0
2428 * To map HPET-ID decimal 10 to PCI segment 0x1 and
2432 ivrs_acpihid [HW,X86-64]
2435 By default, PCI segment is 0, and can be omitted.
2437 For example, to map UART-HID:UID AMD0020:0 to
2438 PCI segment 0x1 and PCI device ID 00:14.5,
2440 ivrs_acpihid=AMD0020:0@0001:00:14.5
2443 * To map UART-HID:UID AMD0020:0 to PCI segment is 0,
2445 ivrs_acpihid[00:14.5]=AMD0020:0
2446 * To map UART-HID:UID AMD0020:0 to PCI segment 0x1 and
2448 ivrs_acpihid[0001:00:14.5]=AMD0020:0
2467 kernelcore= [KNL,X86,IA-64,PPC]
2557 0: force disabled
2567 Default is 0 (don't ignore, but inject #GP)
2570 [KVM,X86] Controls whether or not KVM will try to
2612 back to huge pages. 0 disables the recovery, otherwise if
2620 If the value is 0 (the default), KVM will pick a period based
2652 [KVM,ARM] Trap guest accesses to GICv3 group-0
2720 l1d_flush= [X86,INTEL]
2737 l1tf= [X86] Control mitigation of the L1TF vulnerability on
2806 lapic [X86-32,APIC] Enable the local APIC even if BIOS
2809 lapic= [X86,APIC] Do not use TSC deadline
2814 lapic_timer_c2_ok [X86,APIC] trust the local apic timer
2818 libata.dma=0 Disable all PATA and SATA DMA
2826 libata.ignore_hpa=0 keep BIOS limits (default)
2844 number of 0 either selects the first device or the
2859 * Transfer mode: pio[0-7], mwdma[0-4] and udma[0-7].
2999 0 (KERN_EMERG) system is unusable
3021 lp=0 [LP] Specify parallel ports to use, e.g,
3023 lp=reset first parallel port). 'lp=0' disables the
3041 CPU). 0 enables autodetection (default). To determine
3073 will bring up during bootup. maxcpus=n : n >= 0 limits
3078 While n=0 is a special case, it is equivalent to "nosmp",
3088 mce [X86-32] Machine Check Exception
3090 mce=option [X86-64] See Documentation/arch/x86/x86_64/boot-options.rst
3099 mds= [X86,INTEL]
3132 Must be specified, otherwise memory size will be 0.
3149 [X86] Work as limiting max address. Use together
3166 mem=nopentium [BUGS=X86-32] Disable usage of 4MB pages for kernel
3183 memmap=exactmap [KNL,X86] Enable setting of an exact
3190 [KNL, X86, MIPS, XTENSA] Force usage of a specific region of memory.
3206 Example: Exclude memory from 0x18690000-0x1869ffff
3207 memmap=64K$0x18690000
3209 memmap=0x10000$0x18690000
3215 [KNL,X86] Mark specific memory as protected.
3217 The memory region may be marked as e820 type 12 (0xc)
3229 memory_corruption_check=0/1 [X86]
3241 memory_corruption_check_size=size [X86]
3247 memory_corruption_check_period=seconds [X86]
3250 other rate. 0 disables periodic checking.
3253 [KNL,X86,ARM] Boolean flag to enable this feature.
3271 memtest= [KNL,X86,ARM,M68K,PPC,RISCV] Enable memtest
3273 default : 0 <disable>
3281 mem_encrypt= [X86-64] AMD Secure Memory Encryption (SME) control
3287 Refer to Documentation/virt/kvm/x86/amd-memory-encryption.rst
3300 mfgptfix [X86-32] Fix MFGPT timers on AMD Geode platforms when
3307 microcode.force_minrev= [X86]
3316 Format:[0..2][b][c][t]
3317 Default: "0tb"
3319 0 - The attached screen is the 3.5" TFT
3337 [X86,PPC,S390,ARM64] Control optional mitigations for
3349 Equivalent to: if nokaslr then kpti=0 [ARM64]
3350 gather_data_sampling=off [X86]
3351 indirect_target_selection=off [X86]
3352 kvm.nx_huge_pages=off [X86]
3353 l1tf=off [X86]
3354 mds=off [X86]
3355 mmio_stale_data=off [X86]
3358 nobp=0 [S390]
3359 nopti [X86,PPC]
3361 nospectre_v1 [X86,PPC]
3362 nospectre_v2 [X86,PPC,S390,ARM64]
3363 reg_file_data_sampling=off [X86]
3364 retbleed=off [X86]
3365 spec_store_bypass_disable=off [X86,PPC]
3366 spectre_bhi=off [X86]
3367 spectre_v2_user=off [X86]
3368 srbds=off [X86,INTEL]
3370 tsx_async_abort=off [X86]
3389 Equivalent to: l1tf=flush,nosmt [X86]
3390 mds=full,nosmt [X86]
3391 tsx_async_abort=full,nosmt [X86]
3392 mmio_stale_data=full,nosmt [X86]
3393 retbleed=auto,nosmt [X86]
3399 of 0 disables mminit logging and a level of 4 will
3404 [X86,INTEL] Control mitigation for the Processor
3479 movablecore= [KNL,X86,IA-64,PPC]
3514 mtrr=debug [X86]
3518 mtrr_chunk_size=nn[KMG] [X86]
3522 mtrr_gran_size=nn[KMG] [X86]
3528 mtrr_spare_reg_nr=n [X86]
3530 Range: 0,7 : spare reg number
3555 0 to disable accounting
3557 Default value is 0.
3613 To turn off this behaviour, set the value to '0'.
3630 The default parameter value of '0' causes the kernel
3645 Setting this to value to 0 causes the kernel to use
3687 nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels
3689 Valid num: 0 or 1
3690 0 - turn hardlockup detector in nmi_watchdog off
3703 no387 [BUGS=X86-32] Tells the kernel to use the 387 maths
3710 no5lvl [X86-64,RISCV] Disable 5-level paging mode. Forces
3755 noexec32 [X86-64]
3768 nofsgsbase [X86] Disables FSGSBASE instructions.
3770 nofxsr [BUGS=X86-32] Disables x86 floating point extended
3806 nohugeiomap [KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings.
3808 nohugevmalloc [KNL,X86,PPC,ARM64] Disable kernel huge vmalloc mappings.
3830 nointremap [X86-64, Intel-IOMMU] Do not enable interrupt
3836 noinvpcid [X86] Disable the INVPCID cpu feature.
3840 noirqdebug [X86-32] Disables the code which attempts to detect and
3852 no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page
3855 no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver
3857 nolapic [X86-32,APIC] Do not enable or use the local APIC.
3859 nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
3863 nomce [X86-32] Disable Machine Check Exception
3865 nomfgpt [X86-32] Disable Multi-Function General Purpose
3880 nonmi_ipi [X86] Disable using NMI IPIs during panic/reboot to
3884 nopat [X86] Disable PAT (page attribute table extension of
3887 nopcid [X86-64] Disable the PCID cpu feature.
3889 nopku [X86] Disable Memory Protection Keys CPU feature found
3892 nopti [X86-64]
3895 nopv= [X86,XEN,KVM,HYPER_V,VMWARE]
3900 nopvspin [X86,XEN,KVM]
3906 echo 0 > /proc/sys/kernel/randomize_va_space
3908 noreplace-smp [X86-32,SMP] Don't replace SMP instructions
3920 nosgx [X86-64,SGX] Disables Intel SGX kernel support.
3931 and disable the IO APIC. legacy for "maxcpus=0".
3936 [KNL,X86,PPC] Disable symmetric multithreading (SMT).
3949 nospectre_v1 [X86,PPC] Disable mitigations for Spectre Variant 1
3953 nospectre_v2 [X86,PPC_E500,ARM64] Disable all mitigations for
3958 no-steal-acc [X86,PV_OPS,ARM64,PPC/PSERIES] Disable paravirtualized
3964 no_timer_check [X86,APIC] Disables the code which tests for
3982 [X86,PV_OPS] Disable paravirtualized VMware scheduler
3990 nox2apic [X86-64,APIC] Do not enable x2APIC mode.
3996 noxsave [BUGS=X86] Disables x86 extended register state save
4000 noxsaveopt [X86] Disables xsaveopt used in saving x86 extended
4007 noxsaves [X86] Disables xsaves and xrstors used in saving and
4008 restoring x86 extended register state in compacted
4039 numa=off [KNL, ARM64, PPC, RISCV, SPARC, X86] Disable NUMA, Only
4042 numa_balancing= [KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
4065 omap_mux=i2c2_scl.i2c2_scl=0x100,i2c2_sda.i2c2_sda=0x100
4075 1 indicates lock status, 0 indicates unlock status.
4112 timeout > 0: seconds before rebooting
4113 timeout = 0: wait forever
4114 timeout < 0: reboot immediately
4135 bit 0: print all tasks info
4148 connected to, default is 0.
4151 0 for XT, 1 for AT (default is AT).
4154 parport= [HW,PPT] Specify parallel ports. 0 disables.
4155 Format: { 0 | auto | 0xBBB[,IRQ[,DMA]] }
4202 for the respective channel. Bit 0 is for the first
4227 Bit 0 is for mode 0, bit 1 is for mode 1, and so on.
4239 options up to 6 legacy ports are supported: 0x1f0,
4240 0x170, 0x1e8, 0x168, 0x1e0, 0x160, however probing
4242 corresponding bits in the mask to 1. Bit 0 is for
4243 the first port in the list above (0x1f0), and so on.
4249 set to 1 if CONFIG_PATA_QDI_MODULE, 0 otherwise.
4254 the standard I/O port (0x130) if 1, otherwise the
4255 value given is the I/O port to use (typically 0x1b0).
4257 0 otherwise.
4262 the use of the respective PIO modes. Bit 0 is for
4263 mode 0, bit 1 is for mode 1, and so on. Mode 0 only
4299 off [X86] don't probe for the PCI bus
4300 bios [X86-32] force use of PCI BIOS, don't access
4303 nobios [X86-32] disallow use of PCI BIOS, only direct
4307 conf1 [X86] Force use of PCI Configuration Access
4308 Mechanism 1 (config address in IO port 0xCF8,
4309 data in IO port 0xCFC, both 32-bit).
4310 conf2 [X86] Force use of PCI Configuration Access
4311 Mechanism 2 (IO port 0xCF8 is an 8-bit port for
4312 the function, IO port 0xCFA, also 8-bit, sets
4314 through ports 0xC000-0xCFFF).
4322 nommconf [X86] Disable use of MMCONFIG for PCI
4324 check_enable_amd_mmconf [X86] check for and enable
4341 biosirq [X86-32] Use PCI BIOS calls to get the interrupt
4349 rom [X86] Assign address space to expansion ROMs.
4353 norom [X86] Do not assign address space to
4356 nobar [X86] Do not assign address space to the
4358 irqmask=0xMMMM [X86] Set a bit mask of IRQs allowed to be
4362 pirqaddr=0xAAAAA [X86] Specify the physical address
4366 lastbus=N [X86] Scan all buses thru bus #N. Can be
4370 assign-busses [X86] Always assign all PCI bus
4373 usepirqmask [X86] Honor the possible IRQ mask stored
4379 noacpi [X86] Do not use ACPI for IRQ routing
4381 use_crs [X86] Use PCI host bridge window information
4385 nocrs [X86] Ignore PCI host bridge windows from ACPI.
4387 use_e820 [X86] Use E820 reservations to exclude parts of
4392 no_e820 [X86] Ignore E820 reservations for PCI host
4400 skip_isa_align [X86] do not align io start addr, so can
4402 noearly [X86] Don't do any early type 1 scanning.
4539 Format: { 0 | 1 }
4550 See Documentation/arch/x86/i386/IO-APIC.rst.
4553 Format: { parport<nr> | timid | 0 }
4556 pmtmr= [X86] Manual setup of pmtmr I/O Port.
4558 e.g. pmtmr=0x508
4563 PMU counters by setting MMCR0 to 0 (the FC bit is
4566 remains 0.
4643 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4650 serial console, keeping this 0 is a good choice
4653 default: 0 (auto_verbose is enabled)
4663 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4709 (0 = never).
4714 0 = disabled, 1 = enabled (default).
4718 pti= [X86-64] Control Page Table Isolation of user and
4768 Format: <bool> (1/Y/y=enable, 0/N/n=disable)
4773 cec_disable [X86]
4872 RCU_BOOST is not set, valid values are 0-99 and
4910 of permitted values is in the range 0:100000.
4989 Specify rcutree.use_softirq=0 to use rcuc kthreads.
5252 Test RCU priority boosting? 0=no, 1=maybe, 2=yes.
5439 rdrand= [X86]
5446 rdt= [HW,X86,RDT]
5454 Format (x86 or x86_64):
5479 x86 laptops.
5500 refscale is built into the kernel and to 0 (leave
5519 them. If <base> is less than 0x10000, the region
5522 reservetop= [X86-32]
5550 retbleed= [X86] Control mitigation of RETBleed (Arbitrary
5588 0 "airplane mode". All wifi, bluetooth, wimax, gps, fm,
5593 0 The "airplane mode" button does nothing.
5674 and so on. As a special case a factor of 0 imposes no
5683 schedstats= [KNL,X86] Enable or disable scheduled statistics.
5701 Format: integer between 0 and 10
5702 Default is 0.
5799 Format: { "0" | "1" }
5800 0 -- disable. (may be 1 via CONFIG_CMDLINE="skew_tick=1"
5810 Format: { "0" | "1" }
5812 0 -- disable.
5816 serialnumber [BUGS=X86-32]
5818 sev=option[,option...] [X86-64] See Documentation/arch/x86/x86_64/boot-options.rst
5823 show_lapic= [APIC,X86] Advanced Programmable Interrupt Controller
5858 more than 32MB of RAM, 0 otherwise.
5923 0: Toshiba Satellite 1800 (GP data pin select)
5936 Format: 0 | 1
5947 Format: 0 | 1
5952 spectre_bhi= [X86] Control mitigation of Branch History Injection
5961 spectre_v2= [X86] Control mitigation of Spectre variant 2
6000 [X86] Control mitigation of Spectre variant 2
6041 [X86] Control RAS overflow mitigation on AMD Zen CPUs
6072 On x86 the options are:
6090 X86: "prctl"
6109 [X86] Enable split lock detection or bus lock detection
6135 0 < N <= 1000.
6146 CPL > 0.
6148 srbds= [X86,INTEL]
6182 0: Never.
6186 0x1X: Above plus if high contention.
6232 srcutree.convert_to_big must have the 0x10 bit
6290 [X86]
6313 range 0 < portnr < 1024).
6324 The default value is 0 (no limit).
6359 Format: { on | off | y | n | 1 | 0 }
6363 swiotlb= [ARM,IA-64,PPC,MIPS,X86]
6430 0: no polling (default)
6483 (0). For more information about TPM hardware interfaces
6495 echo 0 > /proc/sys/kernel/tracepoint_printk
6648 tsa= [X86] Control mitigation for Transient Scheduler
6663 [x86] reliable: mark tsc clocksource as reliable, this
6668 [x86] noirqtime: Do not use TSC to do irq accounting.
6672 [x86] unstable: mark the TSC clocksource as unstable, this
6675 [x86] nowatchdog: disable clocksource watchdog. Used
6679 [x86] recalibrate: force recalibration against a HW timer
6681 obtained from HW or FW using either an MSR or CPUID(0x15).
6683 [x86] watchdog: Use TSC as the watchdog clocksource with
6690 tsc_early_khz= [X86] Skip early TSC calibration and use the given
6696 tsx= [X86] Control Transactional Synchronization
6725 tsx_async_abort= [X86,INTEL] Control mitigation for the TSX Async
6789 [X86] Cause panic on unknown NMI.
6791 unwind_debug [X86-64]
6800 0 = not authorized, 1 = authorized, 2 = authorized
6811 [USB] Set to log all usbfs traffic (default 0 = off).
6818 [USB] Set to cycle leds on hubs (default 0 = off).
6822 scheme (default 0 = off).
6826 usbfs (default = 16, 0 = max = 2047).
6900 Example: quirks=0781:5580:bk,0a5c:5834:gij
6981 [X86] Flags controlling user PTE allocations.
6987 vdso= [X86,SH,SPARC]
6991 vdso=0: disable VDSO mapping
6993 vdso32= [X86] Control the 32-bit vDSO
6995 vdso32=0 or vdso32=2: disable 32-bit VDSO
6999 vdso32=0; otherwise, the default is vdso32=1.
7002 alias for vdso32=0.
7004 Try vdso32=0 if you encounter an error that says:
7014 Format: [0|1]
7018 the allocated input device. If set to 0, video driver
7035 virtio_mmio.device=1K@0x100b0000:48:7
7039 vga= [BOOT,X86-32] Select a particular video mode
7040 See Documentation/arch/x86/boot.rst and
7060 minimum size (128MB on x86). It can also be used to
7077 vsyscall= [X86-64]
7079 fixed addresses of 0xffffffffff600x00 from legacy
7098 Format: 0xYX, X = foreground, Y = background.
7099 Default: 0x07 = light gray on black.
7102 Format: 0xCCBBAA, where AA, BB, and CC are the same as
7110 ranging from 0-255.
7116 ranging from 0-255.
7122 ranging from 0-255.
7126 Format=<0|1>
7133 Format=<-1|0|1>
7137 overridden by individual drivers. 0 will hide
7140 vt.italic= [VT] Default color for italic text; 0-15.
7143 vt.underline= [VT] Default color for underlined text; 0-15.
7155 threshold is set to twice the value. A value of 0
7169 help debugging. 0 disables workqueue stall
7231 x2apic_phys [X86-64,APIC] Use x2apic physical mode instead of
7235 xen_512gb_limit [KNL,X86-64,XEN]
7242 xen_emul_unplug= [HW,X86,XEN]
7254 xen_legacy_crash [X86,XEN]
7258 xen_msr_safe= [X86,XEN]
7264 xen_nopvspin [X86,XEN]
7269 xen_nopv [X86]
7276 [KNL,X86,XEN] Disable the vector callback for Xen
7285 xen_timer_slop= [X86-64,XEN]