Hi Reiner,

On 2020-05-26 21:54:39 (+0200), Reiner Pröls wrote:
> I tried the last RT patch against a 5.6.10 kernel.
> 
> After enabeling the FULL preemption model I'am no longer possible to
> use efibootmgr.
> 
> The kernel module efivarfs refuses to load - no device ...

IIRC, efivarfs functionality is disabled by default due to the patchset.
Add the `efi=runtime` kernel parameter and reboot.

Best,
David

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