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Message-ID: <Y4wdsB1XR5GBMKIx@debian.me>
Date: Sun, 4 Dec 2022 11:10:24 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
linux-doc@...r.kernel.org
Subject: Re: [PATCH] Documentation: admin: move OOO entries in
kernel-parameters.txt
On Sat, Dec 03, 2022 at 05:30:50PM -0800, Randy Dunlap wrote:
> Do not backport.
Why? Why don't you want this to be AUTOSEL-ed for stable?
> diff -- a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -378,18 +378,16 @@
> autoconf= [IPV6]
> See Documentation/networking/ipv6.rst.
>
> - show_lapic= [APIC,X86] Advanced Programmable Interrupt Controller
> - Limit apic dumping. The parameter defines the maximal
> - number of local apics being dumped. Also it is possible
> - to set it to "all" by meaning -- no limit here.
> - Format: { 1 (default) | 2 | ... | all }.
> - The parameter valid if only apic=debug or
> - apic=verbose is specified.
> - Example: apic=debug show_lapic=all
> -
> apm= [APM] Advanced Power Management
> See header of arch/x86/kernel/apm_32.c.
>
> + apparmor= [APPARMOR] Disable or enable AppArmor at boot time
> + Format: { "0" | "1" }
> + See security/apparmor/Kconfig help text
> + 0 -- disable.
> + 1 -- enable.
> + Default value is set via kernel config option.
> +
> arcrimi= [HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards
> Format: <io>,<irq>,<nodeID>
>
> @@ -1045,26 +1043,12 @@
> can be useful when debugging issues that require an SLB
> miss to occur.
>
> - stress_slb [PPC]
> - Limits the number of kernel SLB entries, and flushes
> - them frequently to increase the rate of SLB faults
> - on kernel addresses.
> -
> - stress_hpt [PPC]
> - Limits the number of kernel HPT entries in the hash
> - page table to increase the rate of hash page table
> - faults on kernel addresses.
> -
> disable= [IPV6]
> See Documentation/networking/ipv6.rst.
>
> disable_radix [PPC]
> Disable RADIX MMU mode on POWER9
>
> - radix_hcall_invalidate=on [PPC/PSERIES]
> - Disable RADIX GTSE feature and use hcall for TLB
> - invalidate.
> -
> disable_tlbie [PPC]
> Disable TLBIE instruction. Currently does not work
> with KVM, with HASH MMU, or with coherent accelerators.
> @@ -1166,16 +1150,6 @@
> Documentation/admin-guide/dynamic-debug-howto.rst
> for details.
>
> - nopku [X86] Disable Memory Protection Keys CPU feature found
> - in some Intel CPUs.
> -
> - <module>.async_probe[=<bool>] [KNL]
> - If no <bool> value is specified or if the value
> - specified is not a valid <bool>, enable asynchronous
> - probe on this module. Otherwise, enable/disable
> - asynchronous probe on this module as indicated by the
> - <bool> value. See also: module.async_probe
> -
> early_ioremap_debug [KNL]
> Enable debug messages in early_ioremap support. This
> is useful for tracking down temporary early mappings
> @@ -1791,12 +1765,6 @@
> which allow the hypervisor to 'idle' the
> guest on lock contention.
>
> - keep_bootcon [KNL]
> - Do not unregister boot console at start. This is only
> - useful for debugging when something happens in the window
> - between unregistering the boot console and initializing
> - the real console.
> -
> i2c_bus= [HW] Override the default board specific I2C bus speed
> or register an additional I2C bus that is not
> registered from board initialization code.
> @@ -2366,17 +2334,18 @@
> js= [HW,JOY] Analog joystick
> See Documentation/input/joydev/joystick.rst.
>
> - nokaslr [KNL]
> - When CONFIG_RANDOMIZE_BASE is set, this disables
> - kernel and module base offset ASLR (Address Space
> - Layout Randomization).
> -
> kasan_multi_shot
> [KNL] Enforce KASAN (Kernel Address Sanitizer) to print
> report on every invalid memory access. Without this
> parameter KASAN will print report only for the first
> invalid access.
>
> + keep_bootcon [KNL]
> + Do not unregister boot console at start. This is only
> + useful for debugging when something happens in the window
> + between unregistering the boot console and initializing
> + the real console.
> +
> keepinitrd [HW,ARM]
>
> kernelcore= [KNL,X86,IA-64,PPC]
> @@ -3325,6 +3294,13 @@
> For details see:
> Documentation/admin-guide/hw-vuln/processor_mmio_stale_data.rst
>
> + <module>.async_probe[=<bool>] [KNL]
> + If no <bool> value is specified or if the value
> + specified is not a valid <bool>, enable asynchronous
> + probe on this module. Otherwise, enable/disable
> + asynchronous probe on this module as indicated by the
> + <bool> value. See also: module.async_probe
> +
> module.async_probe=<bool>
> [KNL] When set to true, modules will use async probing
> by default. To enable/disable async probing for a
> @@ -3779,6 +3755,11 @@
>
> nojitter [IA-64] Disables jitter checking for ITC timers.
>
> + nokaslr [KNL]
> + When CONFIG_RANDOMIZE_BASE is set, this disables
> + kernel and module base offset ASLR (Address Space
> + Layout Randomization).
> +
> no-kvmclock [X86,KVM] Disable paravirtualized KVM clock driver
>
> no-kvmapf [X86,KVM] Disable paravirtualized asynchronous page
> @@ -3824,6 +3805,19 @@
>
> nopcid [X86-64] Disable the PCID cpu feature.
>
> + nopku [X86] Disable Memory Protection Keys CPU feature found
> + in some Intel CPUs.
> +
> + nopv= [X86,XEN,KVM,HYPER_V,VMWARE]
> + Disables the PV optimizations forcing the guest to run
> + as generic guest with no PV drivers. Currently support
> + XEN HVM, KVM, HYPER_V and VMWARE guest.
> +
> + nopvspin [X86,XEN,KVM]
> + Disables the qspinlock slow path using PV optimizations
> + which allow the hypervisor to 'idle' the guest on lock
> + contention.
> +
> norandmaps Don't use address space randomization. Equivalent to
> echo 0 > /proc/sys/kernel/randomize_va_space
>
> @@ -4591,6 +4585,10 @@
>
> r128= [HW,DRM]
>
> + radix_hcall_invalidate=on [PPC/PSERIES]
> + Disable RADIX GTSE feature and use hcall for TLB
> + invalidate.
> +
> raid= [HW,RAID]
> See Documentation/admin-guide/md.rst.
>
> @@ -5572,13 +5570,6 @@
> 1 -- enable.
> Default value is 1.
>
> - apparmor= [APPARMOR] Disable or enable AppArmor at boot time
> - Format: { "0" | "1" }
> - See security/apparmor/Kconfig help text
> - 0 -- disable.
> - 1 -- enable.
> - Default value is set via kernel config option.
> -
> serialnumber [BUGS=X86-32]
>
> sev=option[,option...] [X86-64] See Documentation/x86/x86_64/boot-options.rst
> @@ -5586,6 +5577,15 @@
> shapers= [NET]
> Maximal number of shapers.
>
> + show_lapic= [APIC,X86] Advanced Programmable Interrupt Controller
> + Limit apic dumping. The parameter defines the maximal
> + number of local apics being dumped. Also it is possible
> + to set it to "all" by meaning -- no limit here.
> + Format: { 1 (default) | 2 | ... | all }.
> + The parameter valid if only apic=debug or
> + apic=verbose is specified.
> + Example: apic=debug show_lapic=all
> +
> simeth= [IA-64]
> simscsi=
>
> @@ -6025,6 +6025,16 @@
> be used to filter out binaries which have
> not yet been made aware of AT_MINSIGSTKSZ.
>
> + stress_hpt [PPC]
> + Limits the number of kernel HPT entries in the hash
> + page table to increase the rate of hash page table
> + faults on kernel addresses.
> +
> + stress_slb [PPC]
> + Limits the number of kernel SLB entries, and flushes
> + them frequently to increase the rate of SLB faults
> + on kernel addresses.
> +
> sunrpc.min_resvport=
> sunrpc.max_resvport=
> [NFS,SUNRPC]
> @@ -6957,16 +6967,6 @@
> fairer and the number of possible event channels is
> much higher. Default is on (use fifo events).
>
> - nopv= [X86,XEN,KVM,HYPER_V,VMWARE]
> - Disables the PV optimizations forcing the guest to run
> - as generic guest with no PV drivers. Currently support
> - XEN HVM, KVM, HYPER_V and VMWARE guest.
> -
> - nopvspin [X86,XEN,KVM]
> - Disables the qspinlock slow path using PV optimizations
> - which allow the hypervisor to 'idle' the guest on lock
> - contention.
> -
> xirc2ps_cs= [NET,PCMCIA]
> Format:
> <irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]
LGTM, thanks!
Reviewed-by: Bagas Sanjaya <bagasdotme@...il.com>
--
An old man doll... just what I always wanted! - Clara
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