On 9/14/23 07:27, Alessandro Carminati (Red Hat) wrote:
Update kernel-parameters.txt to reflect new deferred signature
Enhances boot speed by allowing unsigned modules in initrd after
bootloader check.

Signed-off-by: Alessandro Carminati (Red Hat) <alessandro.carmin...@gmail.com>
  Documentation/admin-guide/kernel-parameters.txt | 9 +++++++++
  1 file changed, 9 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt 
index 0c38a8af95ce..beec86f0dd05 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3410,6 +3410,15 @@
                        Note that if CONFIG_MODULE_SIG_FORCE is set, that
                        is always true, so this option does nothing.
+ module_sig_check_wait=
+                       This parameter enables delayed activation of module
+                       signature checks, deferring the process until userspace
+                       triggers it. Once activated, this setting becomes
+                       permanent and cannot be reversed. This feature proves
+                       valuable for incorporating unsigned modules within
+                       initrd, especially after bootloader verification.
+                       By employing this option, boot times can be quicker.

Please keep these in alphabetical order.

Would making the kernel-parameters.txt warning a little bit more informative be a good thing? This should only be used in environments where some other signature verification method is employed.

Also, for future reference, it would be good to have hard numbers to show the boot time improvement in the changelog.


        module_blacklist=  [KNL] Do not load a comma-separated list of
                        modules.  Useful for debugging problem modules.

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