EFI and RT incompatible?
Hi,
I compiled 5.0.5-rt3 last week, and after rebooting I found that efivarfs failed to mount. Loading the efivarfs module gave me a 'device not found' error.
Rebooting into 5.0.0 (no rt) and efivarfs automounted as usual.
Trouble is, I have no experience with bisecting between two different branches, so I have no clue on how to start debugging this. Anybody want to throw me some pointers?
Mart
Quoted 1 line · Mart van de Wege
Hi,
Hello Mart,
Quoted 10 lines
I compiled 5.0.5-rt3 last week, and after rebooting I found that efivarfs failed to mount. Loading the efivarfs module gave me a 'device not found' error.
Rebooting into 5.0.0 (no rt) and efivarfs automounted as usual.
Trouble is, I have no experience with bisecting between two different branches, so I have no clue on how to start debugging this. Anybody want to throw me some pointers?
Linux-rt is disabling EFI runtime by default because it may increase the latency of the system (see [1] for more details).
You can override the behavior by adding "efi=runtime" on your kernel command line.
Cheers,
[1] https://marc.info/?l=linux-rt-users&m=155379809327926&w=2
Quoted 3 lines
Mart
Signature · 1 line
Julien Grall
Quoted 6 lines · Julien Grall
Linux-rt is disabling EFI runtime by default because it may increase the latency of the system (see [1] for more details).
You can override the behavior by adding "efi=runtime" on your kernel command line.
Yeah, I saw the 22/3 thread too late.
Thanks anyway,
Mart