1 files changed, 11 insertions, 3 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 25dc4a0e7e48..75236f1972d9 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2681,9 +2681,17 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         Run specified binary instead of /init from the ramdisk,
                         used for early userspace startup. See initrd.
 
-        reboot=         [BUGS=X86-32,BUGS=ARM,BUGS=IA-64] Rebooting mode
-                        Format: <reboot_mode>[,<reboot_mode2>[,...]]
-                        See arch/*/kernel/reboot.c or arch/*/kernel/process.c
+        reboot=         [KNL]
+                        Format (x86 or x86_64):
+                                [w[arm] | c[old] | h[ard] | s[oft] | g[pio]] \
+                                [[,]s[mp]#### \
+                                [[,]b[ios] | a[cpi] | k[bd] | t[riple] | e[fi] | p[ci]] \
+                                [[,]f[orce]
+                        Where reboot_mode is one of warm (soft) or cold (hard) or gpio,
+                              reboot_type is one of bios, acpi, kbd, triple, efi, or pci,
+                              reboot_force is either force or not specified,
+                              reboot_cpu is s[mp]#### with #### being the processor
+                                        to be used for rebooting.
 
         relax_domain_level=
                         [KNL, SMP] Set scheduler's default relax_domain_level.