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-rw-r--r--nixos/modules/system/boot/luksroot.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/nixos/modules/system/boot/luksroot.nix b/nixos/modules/system/boot/luksroot.nix
index 8c82b4bcf5d..f87d3b07a36 100644
--- a/nixos/modules/system/boot/luksroot.nix
+++ b/nixos/modules/system/boot/luksroot.nix
@@ -621,6 +621,8 @@ in
               Whether to allow TRIM requests to the underlying device. This option
               has security implications; please read the LUKS documentation before
               activating it.
+              This option is incompatible with authenticated encryption (dm-crypt
+              stacked over dm-integrity).
             '';
           };