A valid base address must be provided, and the serial
port must already be setup and configured.
- armada3700_uart,<addr>
+ ar3700_uart,<addr>
Start an early, polled-mode console on the
Armada 3700 serial port at the specified
address. The serial port must already be setup
extended tables themselves, and also PASID support. With
this option set, extended tables will not be used even
on hardware which claims to support them.
+ tboot_noforce [Default Off]
+ Do not force the Intel IOMMU enabled under tboot.
+ By default, tboot will force Intel IOMMU on, which
+ could harm performance of some high-throughput
+ devices like 40GBit network cards, even if identity
+ mapping is enabled.
+ Note that using this option lowers the security
+ provided by tboot because it makes the system
+ vulnerable to DMA attacks.
intel_idle.max_cstate= [KNL,HW,ACPI,X86]
0 disables intel_idle and fall back on acpi_idle.
nobypass [PPC/POWERNV]
Disable IOMMU bypass, using IOMMU for PCI devices.
+ iommu.passthrough=
+ [ARM64] Configure DMA to bypass the IOMMU by default.
+ Format: { "0" | "1" }
+ 0 - Use IOMMU translation for DMA.
+ 1 - Bypass the IOMMU for DMA.
+ unset - Use IOMMU translation for DMA.
io7= [HW] IO7 for Marvel based alpha systems
See comment before marvel_specify_io7 in
and gids from such clients. This is intended to ease
migration from NFSv2/v3.
- objlayoutdriver.osd_login_prog=
- [NFS] [OBJLAYOUT] sets the pathname to the program which
- is used to automatically discover and login into new
- osd-targets. Please see:
- Documentation/filesystems/pnfs.txt for more explanations
-
nmi_debug= [KNL,SH] Specify one or more actions to take
when a NMI is triggered.
Format: [state][,regs][,debounce][,die]
spia_pedr=
spia_peddr=
+ srcutree.exp_holdoff [KNL]
+ Specifies how many nanoseconds must elapse
+ since the end of the last SRCU grace period for
+ a given srcu_struct until the next normal SRCU
+ grace period will be considered for automatic
+ expediting. Set to zero to disable automatic
+ expediting.
+
stacktrace [FTRACE]
Enabled the stack tracer on boot up.