Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.bugs.dist > #1222777

Bug#1089080: efibootmgr can't use under RT kernel

Show all headers | View raw

Package: efibootmgr
Version: 17-2
Severity: important
X-Debbugs-Cc: atzlinux@debian.org

Hi,

 When I run efibootmgr on RT kernel, I meet the following error:

EFI variables are not supported on this system.

# uname -a
Linux atzlinux-ce 6.1.0-28-rt-amd64 #1 SMP PREEMPT_RT Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux

The /sys/firmware/efi/efivars/ is empty:

root@atzlinux-ce:~# ls -l /sys/firmware/efi/efivars/
total 0

# lsmod|grep efi
efi_pstore             16384  0

When I run modprobe efivarfs:

# modprobe efivarfs
modprobe: ERROR: could not insert 'efivarfs': No such device

-------------------------------------------------------

But in the same notebook, when I boot use normal kernel:

# uname -a
Linux atzlinux-e8 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux

efibootmgr work no problem.

The kernel module efivarfs can load:

root@atzlinux-e8:~# lsmod|grep efi
efi_pstore             16384  0
efivarfs               24576  1

root@atzlinux-e8:~# dmesg|grep efivars
[    0.250220] Registered efivars operations

I don't find this line in RT kernel boot log.

Is the efivars module support RT kernel?



-- System Information:
Release:	12.8.0
Codename:	bookworm
Architecture: x86_64

Kernel: Linux 6.1.0-28-rt-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=zh_CN.UTF-8, LC_CTYPE=zh_CN.UTF-8 (charmap=UTF-8), LANGUAGE=zh_CN:zh
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages efibootmgr depends on:
ii  libc6        2.36-9+deb12u9
ii  libefiboot1  37-6
ii  libefivar1   37-6
ii  libpopt0     1.19+dfsg-1

efibootmgr recommends no packages.

efibootmgr suggests no packages.

-- no debconf information

Back to linux.debian.bugs.dist | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Bug#1089080: efibootmgr can't use under RT kernel xiao sheng wen <atzlinux@debian.org> - 2024-12-05 05:10 +0100
  Bug#1089080: It's not a bug of efibootmgr, rt kernel need add efi=runtime option xiao sheng wen(肖盛文) <atzlinux@sina.com> - 2024-12-09 08:50 +0100

csiph-web