Merge branch 'work.poll2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[sfrench/cifs-2.6.git] / Documentation / admin-guide / kernel-parameters.txt
index 90cefbddf1eda09a9403a5a157f193b232e106d0..1d1d53f85ddd79ce2218b7274b3114f41493ac3a 100644 (file)
 
        earlycon=       [KNL] Output early console device and options.
 
-                       When used with no options, the early console is
-                       determined by the stdout-path property in device
-                       tree's chosen node.
+                       [ARM64] The early console is determined by the
+                       stdout-path property in device tree's chosen node,
+                       or determined by the ACPI SPCR table.
+
+                       [X86] When used with no options the early console is
+                       determined by the ACPI SPCR table.
 
                cdns,<addr>[,options]
                        Start an early, polled-mode console on a Cadence
        norandmaps      Don't use address space randomization.  Equivalent to
                        echo 0 > /proc/sys/kernel/randomize_va_space
 
-       noreplace-paravirt      [X86,IA-64,PV_OPS] Don't patch paravirt_ops
-
        noreplace-smp   [X86-32,SMP] Don't replace SMP instructions
                        with UP alternatives
 
                        [KNL, SMP] Set scheduler's default relax_domain_level.
                        See Documentation/cgroup-v1/cpusets.txt.
 
-       reserve=        [KNL,BUGS] Force the kernel to ignore some iomem area
+       reserve=        [KNL,BUGS] Force kernel to ignore I/O ports or memory
+                       Format: <base1>,<size1>[,<base2>,<size2>,...]
+                       Reserve I/O ports or memory so the kernel won't use
+                       them.  If <base> is less than 0x10000, the region
+                       is assumed to be I/O ports; otherwise it is memory.
 
        reservetop=     [X86-32]
                        Format: nn[KMG]