Merge tag 'x86-misc-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git...

[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 34c8dd5..56bd70e 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2421,6 +2421,23 @@
                        feature (tagged TLBs) on capable Intel chips.
                        Default is 1 (enabled)
 
+       l1d_flush=      [X86,INTEL]
+                       Control mitigation for L1D based snooping vulnerability.
+
+                       Certain CPUs are vulnerable to an exploit against CPU
+                       internal buffers which can forward information to a
+                       disclosure gadget under certain conditions.
+
+                       In vulnerable processors, the speculatively
+                       forwarded data can be used in a cache side channel
+                       attack, to access data to which the attacker does
+                       not have direct access.
+
+                       This parameter controls the mitigation. The
+                       options are:
+
+                       on         - enable the interface for the mitigation
+
        l1tf=           [X86] Control mitigation of the L1TF vulnerability on
                              affected CPUs