[Bug 1853447] Re: chainloader (loop)/kernel.efi does not work

[Dimitri John Ledkov]

Proposed a patch against the rhboot/grub2 repo where the linuxefi
patches come from.

https://github.com/rhboot/grub2/pull/65/files

** Changed in: grub2 (Ubuntu)
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1853447

Title:
  chainloader (loop)/kernel.efi does not work

Status in grub2 package in Ubuntu:
  In Progress

Bug description:
  In UEFI, trying to do

  loopback loop /snaps/pc-kernel_323.snap
  chainloader (loop)/kernel.efi snapd_recovery_mode=$3 snapd_recovery=$4 $standard_params

  i.e. execute .efi binary from inside a snap, does not work

  it fails with "not a valid root device". Not sure why a valid root
  device is needed, as it seems that grub itself is reading the file and
  doesn't seem to pass the file_path externally.

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