Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64...

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

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index fa8c6d4..769db83 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -582,6 +582,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        bootmem_debug   [KNL] Enable bootmem allocator debug messages.
 
+       bert_disable    [ACPI]
+                       Disable BERT OS support on buggy BIOSes.
+
        bttv.card=      [HW,V4L] bttv (bt848 + bt878 based grabber cards)
        bttv.radio=     Most important insmod options are available as
                        kernel args too.
@@ -687,6 +690,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        [SPARC64] tick
                        [X86-64] hpet,tsc
 
+       clocksource.arm_arch_timer.evtstrm=
+                       [ARM,ARM64]
+                       Format: <bool>
+                       Enable/disable the eventstream feature of the ARM
+                       architected timer so that code using WFE-based polling
+                       loops can be debugged more effectively on production
+                       systems.
+
        clearcpuid=BITNUM [X86]
                        Disable CPUID feature X for the kernel. See
                        arch/x86/include/asm/cpufeatures.h for the valid bit
@@ -1185,6 +1196,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Address Range Mirroring feature even if your box
                        doesn't support it.
 
+       efivar_ssdt=    [EFI; X86] Name of an EFI variable that contains an SSDT
+                       that is to be dynamically loaded by Linux. If there are
+                       multiple variables with the same name but with different
+                       vendor GUIDs, all of them will be loaded. See
+                       Documentation/acpi/ssdt-overlays.txt for details.
+
+
        eisa_irq_edge=  [PARISC,HW]
                        See header of drivers/parisc/eisa.c.
 
@@ -2786,8 +2804,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        timer: [X86] Force use of architectural NMI
                                timer mode (see also oprofile.timer
                                for generic hr timer mode)
-                               [s390] Force legacy basic mode sampling
-                                (report cpu_type "timer")
 
        oops=panic      Always panic on oopses. Default is to just kill the
                        process, but there is a small probability of
@@ -3592,6 +3608,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                present during boot.
                nocompress      Don't compress/decompress hibernation images.
                no              Disable hibernation and resume.
+               protect_image   Turn on image protection during restoration
+                               (that will set all pages holding image data
+                               during restoration read-only).
 
        retain_initrd   [RAM] Keep initrd memory after extraction
 
@@ -3990,8 +4009,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        trace_event=[event-list]
                        [FTRACE] Set and start specified trace events in order
-                       to facilitate early boot debugging.
-                       See also Documentation/trace/events.txt
+                       to facilitate early boot debugging. The event-list is a
+                       comma separated list of trace events to enable. See
+                       also Documentation/trace/events.txt
 
        trace_options=[option-list]
                        [FTRACE] Enable or disable tracer options at boot.