powerpc/64s: Add dt_cpu_ftrs boot time setup option

[linux-2.6-microblaze.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 15f79c2..0f5c3b4 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -866,6 +866,15 @@
 
        dscc4.setup=    [NET]
 
+       dt_cpu_ftrs=    [PPC]
+                       Format: {"off" | "known"}
+                       Control how the dt_cpu_ftrs device-tree binding is
+                       used for CPU feature discovery and setup (if it
+                       exists).
+                       off: Do not use it, fall back to legacy cpu table.
+                       known: Do not pass through unknown features to guests
+                       or userspace, only those that the kernel is aware of.
+
        dump_apple_properties   [X86]
                        Dump name and content of EFI device properties on
                        x86 Macs.  Useful for driver authors to determine