Re: GRUB_CMDLINE_LINUX="... memmap=8G$8G"

[Randy Goldenberg]

Try:

GRUB_CMDLINE_LINUX='memmap=8G\$8G'

https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/448413

On Thu, Dec 21, 2023 at 5:54 PM John Groves <John@groves.net> wrote:

> I'm trying and failing to get "memmap=8G$8G" passed to the kernel on its
> command line.
>
> I have a vague ancient recollection of needing to do "memmap=8G\\\$8G, but
> it's not working now. I've tried lots of escape combinations but no luck.
>
> I've even put "memmap=8G!8G" in /etc/default/grub, run grub2-mkconfig, and
> then used hexedit on /boot/efi/EFI/fedora/grub.cfg to change the '!' to
> '$', but STILL the kernel sees the '!'
>
> Is this a bug or regression in grub2? I hope I'm just overlooking something
> obvious.
>
> Please help!
>
> $ rpm -qa | grep grub
> grubby-8.40-72.fc39.x86_64
> grub2-common-2.06-109.fc39.noarch
> grub2-pc-modules-2.06-109.fc39.noarch
> grub2-tools-minimal-2.06-109.fc39.x86_64
> grub2-tools-2.06-109.fc39.x86_64
> grub2-pc-2.06-109.fc39.x86_64
>
> Thank you,
> John Groves
>