Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...

[uclinux-h8/linux.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 6053677..858b6c0 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -331,7 +331,7 @@
                        APC and your system crashes randomly.
 
        apic=           [APIC,X86] Advanced Programmable Interrupt Controller
-                       Change the output verbosity whilst booting
+                       Change the output verbosity while booting
                        Format: { quiet (default) | verbose | debug }
                        Change the amount of debugging information output
                        when initialising the APIC and IO-APIC components.
@@ -486,10 +486,14 @@
                        cut the overhead, others just disable the usage. So
                        only cgroup_disable=memory is actually worthy}
 
-       cgroup_no_v1=   [KNL] Disable one, multiple, all cgroup controllers in v1
-                       Format: { controller[,controller...] | "all" }
+       cgroup_no_v1=   [KNL] Disable cgroup controllers and named hierarchies in v1
+                       Format: { { controller | "all" | "named" }
+                                 [,{ controller | "all" | "named" }...] }
                        Like cgroup_disable, but only applies to cgroup v1;
                        the blacklisted controllers remain available in cgroup2.
+                       "all" blacklists all controllers and "named" disables
+                       named mounts. Specifying both "all" and "named" disables
+                       all v1 hierarchies.
 
        cgroup.memory=  [KNL] Pass options to the cgroup memory controller.
                        Format: <string>
@@ -1024,6 +1028,12 @@
                        specified address. The serial port must already be
                        setup and configured. Options are not yet supported.
 
+               rda,<addr>
+                       Start an early, polled-mode console on a serial port
+                       of an RDA Micro SoC, such as RDA8810PL, at the
+                       specified address. The serial port must already be
+                       setup and configured. Options are not yet supported.
+
                smh     Use ARM semihosting calls for early console.
 
                s3c2410,<addr>
@@ -1686,12 +1696,11 @@
                        By default, super page will be supported if Intel IOMMU
                        has the capability. With this option, super page will
                        not be supported.
-               ecs_off [Default Off]
-                       By default, extended context tables will be supported if
-                       the hardware advertises that it has support both for the
-                       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.
+               sm_on [Default Off]
+                       By default, scalable mode will be disabled even if the
+                       hardware advertises that it has support for the scalable
+                       mode translation. With this option set, scalable mode
+                       will be used on hardware which claims to support it.
                tboot_noforce [Default Off]
                        Do not force the Intel IOMMU enabled under tboot.
                        By default, tboot will force Intel IOMMU on, which
@@ -2833,7 +2842,7 @@
                        check bypass). With this option data leaks are possible
                        in the system.
 
-       nospectre_v2    [X86] Disable all mitigations for the Spectre variant 2
+       nospectre_v2    [X86,PPC_FSL_BOOK3E] Disable all mitigations for the Spectre variant 2
                        (indirect branch prediction) vulnerability. System may
                        allow data leaks with this option, which is equivalent
                        to spectre_v2=off.
@@ -3088,6 +3097,14 @@
                        timeout < 0: reboot immediately
                        Format: <timeout>
 
+       panic_print=    Bitmask for printing system info when panic happens.
+                       User can chose combination of the following bits:
+                       bit 0: print all tasks info
+                       bit 1: print system memory info
+                       bit 2: print timer info
+                       bit 3: print locks info if CONFIG_LOCKDEP is on
+                       bit 4: print ftrace buffer
+
        panic_on_warn   panic() instead of WARN().  Useful to cause kdump
                        on a WARN().