On 2018-06-11 20:21 -0400, Michael Shell wrote: > On Mon, 11 Jun 2018 23:13:29 +0800 > Xi Ruoyao <r...@stu.xidian.edu.cn> wrote: > > Now we use CONFIG_EFIVAR_FS (y or m), instead of CONFIG_EFI_VARS, > > Do you know if efibootmgr will autodetect (at run time) between the two kernel > interfaces (and if this is a recent feature, what version starting supporting > that)? AFAIK, they both can be enabled at the same time.
efibootmgr uses the library from efivar for /sys/firmware/efi/efivars. I searched "efivarfs" in the Github repo and found the commit to add efivarfs support: https://github.com/rhboot/efivar/commit/5b175a55d53c5d0f44e3636802fc7dc3fe7549a6 It was released in efivarfs-0.4. > As you mentioned, EFIVAR_FS is a more modern interface, but it does > require that a special efivarfs filesystem be (re)mounted r/w: > > mount -o rw -t efivarfs efivarfs /sys/firmware/efi/efivars Yes. Systemd mounts efivarfs automatically. But with sysvinit we should mount it manually, or in /etc/fstab. -- Xi Ruoyao <r...@stu.xidian.edu.cn> School of Aerospace Science and Technology, Xidian University -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
