Having just seen a report of using "fips=1" on the kernel command line,
I could not find it documented anywhere, so add some help for it.

Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Dexuan Cui <de...@microsoft.com>
Cc: linux-cry...@vger.kernel.org
Cc: Eric Biggers <ebigg...@kernel.org>
Cc: Herbert Xu <herb...@gondor.apana.org.au>
Cc: "David S. Miller" <da...@davemloft.net>
Cc: Jonathan Corbet <cor...@lwn.net>
Cc: linux-...@vger.kernel.org
---
Updates/corrections welcome.

v2: drop comment that "fips_enabled can cause some tests to be skipped".

 Documentation/admin-guide/kernel-parameters.txt |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

--- linux-next-20210329.orig/Documentation/admin-guide/kernel-parameters.txt
+++ linux-next-20210329/Documentation/admin-guide/kernel-parameters.txt
@@ -1370,6 +1370,20 @@
                        See Documentation/admin-guide/sysctl/net.rst for
                        fb_tunnels_only_for_init_ns
 
+       fips=           Format: { 0 | 1}
+                       Use to disable (0) or enable (1) FIPS mode.
+                       If enabled, any process that is waiting on the
+                       'fips_fail_notif_chain' will be notified of fips
+                       failures.
+                       This setting can also be modified via sysctl at
+                       /proc/sysctl/crypto/fips_enabled, i.e.,
+                       crypto.fips_enabled.
+                       If fips_enabled = 1 and a test fails, it will cause a
+                       kernel panic.
+                       If fips_enabled = 1, RSA test requires a key size of
+                       2K or larger.
+                       It can also effect which ECC curve is used.
+
        floppy=         [HW]
                        See Documentation/admin-guide/blockdev/floppy.rst.
 

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