Defaults to the default architecture's huge page size
if not specified.
+ deferred_probe_timeout=
+ [KNL] Debugging option to set a timeout in seconds for
+ deferred probe to give up waiting on dependencies to
+ probe. Only specific dependencies (subsystems or
+ drivers) that have opted in will be ignored. A timeout of 0
+ will timeout at the end of initcalls. This option will also
+ dump out devices still on the deferred probe list after
+ retrying.
+
dhash_entries= [KNL]
Set number of hash buckets for dentry cache.
nosmt=force: Force disable SMT, cannot be undone
via the sysfs control file.
+ nospectre_v1 [PPC] Disable mitigations for Spectre Variant 1 (bounds
+ check bypass). With this option data leaks are possible
+ in the system.
+
nospectre_v2 [X86] Disable all mitigations for the Spectre variant 2
(indirect branch prediction) vulnerability. System may
allow data leaks with this option, which is equivalent
on: enable the feature
page_poison= [KNL] Boot-time parameter changing the state of
- poisoning on the buddy allocator.
- off: turn off poisoning
+ poisoning on the buddy allocator, available with
+ CONFIG_PAGE_POISONING=y.
+ off: turn off poisoning (default)
on: turn on poisoning
panic= [KNL] Kernel behaviour on panic: delay <timeout>
See header of drivers/block/paride/pcd.c.
See also Documentation/blockdev/paride.txt.
- pci=option[,option...] [PCI] various PCI subsystem options:
- earlydump [X86] dump PCI config space before the kernel
+ pci=option[,option...] [PCI] various PCI subsystem options.
+
+ Some options herein operate on a specific device
+ or a set of devices (<pci_dev>). These are
+ specified in one of the following formats:
+
+ [<domain>:]<bus>:<dev>.<func>[/<dev>.<func>]*
+ pci:<vendor>:<device>[:<subvendor>:<subdevice>]
+
+ Note: the first format specifies a PCI
+ bus/device/function address which may change
+ if new hardware is inserted, if motherboard
+ firmware changes, or due to changes caused
+ by other kernel parameters. If the
+ domain is left unspecified, it is
+ taken to be zero. Optionally, a path
+ to a device through multiple device/function
+ addresses can be specified after the base
+ address (this is more robust against
+ renumbering issues). The second format
+ selects devices using IDs from the
+ configuration space which may match multiple
+ devices in the system.
+
+ earlydump dump PCI config space before the kernel
changes anything
off [X86] don't probe for the PCI bus
bios [X86-32] force use of PCI BIOS, don't access
window. The default value is 64 megabytes.
resource_alignment=
Format:
- [<order of align>@][<domain>:]<bus>:<slot>.<func>[; ...]
- [<order of align>@]pci:<vendor>:<device>\
- [:<subvendor>:<subdevice>][; ...]
+ [<order of align>@]<pci_dev>[; ...]
Specifies alignment and device to reassign
- aligned memory resources.
+ aligned memory resources. How to
+ specify the device is described above.
If <order of align> is not specified,
PAGE_SIZE is used as alignment.
PCI-PCI bridge can be specified, if resource
Adding the window is slightly risky (it may
conflict with unreported devices), so this
taints the kernel.
+ disable_acs_redir=<pci_dev>[; ...]
+ Specify one or more PCI devices (in the format
+ specified above) separated by semicolons.
+ Each device specified will have the PCI ACS
+ redirect capabilities forced off which will
+ allow P2P traffic between devices through
+ bridges without forcing it upstream. Note:
+ this removes isolation between devices and
+ may put more devices in an IOMMU group.
pcie_aspm= [PCIE] Forcibly enable or disable PCIe Active State Power
Management.
git.samba.org / sfrench / cifs-2.6.git / blobdiff