x86/spectre_v2: Fix the documentation to say the right thing.

That is if you disable the heuristics then it will just
use retpoline all the time instead of enabling IBRS for
Skylake+.

OraBug: 27601710
Reviewed-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b1a5084b0455b702958fb31f4646a6c1088db27d..dfc2bfba2103828480e017d3e7ad2540e1bc5db3 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3515,7 +3515,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        off             - disable all heuristics (see below)
                        skylake=off     - do not use IBRS if present on Skylake
                                          instead of retpoline (this is equivalant
-                                         to spectre_v2=ibrs).
+                                         to spectre_v2=retpoline,generic).
 
        spia_io_base=   [HW,MTD]
        spia_fio_base=