Restartable sequences: x86 32/64 architecture support

[deliverable/linux.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 769db8399ac8cf7508897a8574bba21b8a27b6c3..46c030a49186faabaa588afd2d284975c72c2017 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -931,9 +931,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        dhash_entries=  [KNL]
                        Set number of hash buckets for dentry cache.
 
        dhash_entries=  [KNL]
                        Set number of hash buckets for dentry cache.
 

+       disable_1tb_segments [PPC]
+                       Disables the use of 1TB hash page table segments. This
+                       causes the kernel to fall back to 256MB segments which
+                       can be useful when debugging issues that require an SLB
+                       miss to occur.
+

        disable=        [IPV6]
                        See Documentation/networking/ipv6.txt.
 
        disable=        [IPV6]
                        See Documentation/networking/ipv6.txt.
 

+       disable_radix   [PPC]
+                       Disable RADIX MMU mode on POWER9
+

        disable_cpu_apicid= [X86,APIC,SMP]
                        Format: <int>
                        The number of initial APIC ID for the
        disable_cpu_apicid= [X86,APIC,SMP]
                        Format: <int>
                        The number of initial APIC ID for the


@@ -2311,6 +2320,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Note that if CONFIG_MODULE_SIG_FORCE is set, that
                        is always true, so this option does nothing.
 
                        Note that if CONFIG_MODULE_SIG_FORCE is set, that
                        is always true, so this option does nothing.
 

+       module_blacklist=  [KNL] Do not load a comma-separated list of
+                       modules.  Useful for debugging problem modules.
+

        mousedev.tap_time=
                        [MOUSE] Maximum time between finger touching and
                        leaving touchpad surface for touch to be considered
        mousedev.tap_time=
                        [MOUSE] Maximum time between finger touching and
                        leaving touchpad surface for touch to be considered


@@ -3012,6 +3024,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                resource_alignment=
                                Format:
                                [<order of align>@][<domain>:]<bus>:<slot>.<func>[; ...]
                resource_alignment=
                                Format:
                                [<order of align>@][<domain>:]<bus>:<slot>.<func>[; ...]

+                               [<order of align>@]pci:<vendor>:<device>\
+                                               [:<subvendor>:<subdevice>][; ...]

                                Specifies alignment and device to reassign
                                aligned memory resources.
                                If <order of align> is not specified,
                                Specifies alignment and device to reassign
                                aligned memory resources.
                                If <order of align> is not specified,


@@ -3030,6 +3044,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                hpmemsize=nn[KMG]       The fixed amount of bus space which is
                                reserved for hotplug bridge's memory window.
                                Default size is 2 megabytes.
                hpmemsize=nn[KMG]       The fixed amount of bus space which is
                                reserved for hotplug bridge's memory window.
                                Default size is 2 megabytes.

+               hpbussize=nn    The minimum amount of additional bus numbers
+                               reserved for buses below a hotplug bridge.
+                               Default is 1.

                realloc=        Enable/disable reallocating PCI bridge resources
                                if allocations done by BIOS are too small to
                                accommodate resources required by all child
                realloc=        Enable/disable reallocating PCI bridge resources
                                if allocations done by BIOS are too small to
                                accommodate resources required by all child


@@ -3061,6 +3078,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                compat  Treat PCIe ports as PCI-to-PCI bridges, disable the PCIe
                        ports driver.
 
                compat  Treat PCIe ports as PCI-to-PCI bridges, disable the PCIe
                        ports driver.
 

+       pcie_port_pm=   [PCIE] PCIe port power management handling:
+               off     Disable power management of all PCIe ports
+               force   Forcibly enable power management of all PCIe ports
+

        pcie_pme=       [PCIE,PM] Native PCIe PME signaling options:
                nomsi   Do not use MSI for native PCIe PME signaling (this makes
                        all PCIe root ports use INTx for all services).
        pcie_pme=       [PCIE,PM] Native PCIe PME signaling options:
                nomsi   Do not use MSI for native PCIe PME signaling (this makes
                        all PCIe root ports use INTx for all services).


@@ -3164,6 +3185,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Format: <bool>  (1/Y/y=enable, 0/N/n=disable)
                        default: disabled
 
                        Format: <bool>  (1/Y/y=enable, 0/N/n=disable)
                        default: disabled
 

+       printk.devkmsg={on,off,ratelimit}
+                       Control writing to /dev/kmsg.
+                       on - unlimited logging to /dev/kmsg from userspace
+                       off - logging to /dev/kmsg disabled
+                       ratelimit - ratelimit the logging
+                       Default: ratelimit
+

        printk.time=    Show timing data prefixed to each printk message line
                        Format: <bool>  (1/Y/y=enable, 0/N/n=disable)
 
        printk.time=    Show timing data prefixed to each printk message line
                        Format: <bool>  (1/Y/y=enable, 0/N/n=disable)
 


@@ -3561,7 +3589,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        relax_domain_level=
                        [KNL, SMP] Set scheduler's default relax_domain_level.
 
        relax_domain_level=
                        [KNL, SMP] Set scheduler's default relax_domain_level.

-                       See Documentation/cgroups/cpusets.txt.
+                       See Documentation/cgroup-v1/cpusets.txt.

 
        relative_sleep_states=
                        [SUSPEND] Use sleep state labeling where the deepest
 
        relative_sleep_states=
                        [SUSPEND] Use sleep state labeling where the deepest


@@ -3849,6 +3877,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        using these two parameters to set the minimum and
                        maximum port values.
 
                        using these two parameters to set the minimum and
                        maximum port values.
 

+       sunrpc.svc_rpc_per_connection_limit=
+                       [NFS,SUNRPC]
+                       Limit the number of requests that the server will
+                       process in parallel from a single connection.
+                       The default value is 0 (no limit).
+

        sunrpc.pool_mode=
                        [NFS]
                        Control how the NFS server code allocates CPUs to
        sunrpc.pool_mode=
                        [NFS]
                        Control how the NFS server code allocates CPUs to


@@ -3884,7 +3918,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        swapaccount=[0|1]
                        [KNL] Enable accounting of swap in memory resource
                        controller if no parameter or 1 is given or disable
        swapaccount=[0|1]
                        [KNL] Enable accounting of swap in memory resource
                        controller if no parameter or 1 is given or disable

-                       it if 0 is given (See Documentation/cgroups/memory.txt)
+                       it if 0 is given (See Documentation/cgroup-v1/memory.txt)

 
        swiotlb=        [ARM,IA-64,PPC,MIPS,X86]
                        Format: { <int> | force }
 
        swiotlb=        [ARM,IA-64,PPC,MIPS,X86]
                        Format: { <int> | force }