[PATCH 1/1] docs: luks2: Mention key derival function support

[Petr Vorel]

To give users hint why Argon2 (the default in cryptsetup for LUKS2)
does not work.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
Hi,

it'd be nice to have it for Grub 2.06.

Kind regards,
Petr

 docs/grub.texi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/grub.texi b/docs/grub.texi
index eeac9b2ce..7360da128 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -4291,7 +4291,8 @@ devices; option @option{-b} configures all geli 
containers that have boot flag s
 
 GRUB suports devices encrypted using LUKS, LUKS2 and geli. Note that necessary
 modules (@var{luks}, @var{luks2} and @var{geli}) have to be loaded manually
-before this command can be used.
+before this command can be used. For LUKS2 only the PBKDF2 key derival
+function is supported (Argon2 is not yet supported).
 @end deffn
 
 
-- 
2.30.0