In the focal master-next tree file 'vmlinux.lds.S' is at a different location:
'arch/s390/boot/compressed/' instead of 'arch/s390/boot/'
and the context is also slightly different.
Would you please have a look at the attached backport for focal and confirm
that it's correct?
Since it has this add. block:
"
. = ALIGN(256);
.bss : {
_bss = . ;
*(.bss)
*(.bss.*)
*(COMMON)
. = ALIGN(8); /* For convenience during zeroing */
_ebss = .;
}
"
Cherry-pick was fine for kinetic and jammy.
** Patch added: "0001-s390-boot-add-secure-boot-trailer.patch"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1996071/+attachment/5630383/+files/0001-s390-boot-add-secure-boot-trailer.patch
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https://bugs.launchpad.net/bugs/1996071
Title:
[UBUNTU 20.04] boot: Add secure boot trailer
Status in Ubuntu on IBM z Systems:
New
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Focal:
New
Status in linux source package in Jammy:
New
Status in linux source package in Kinetic:
New
Bug description:
Description: boot: Add secure boot trailer
Symptom: Secure boot of Linux will no longer be possible with an
upcoming
IBM Z firmware update.
Problem: New IBM Z firmware requires signed bootable images to contain a
trailing data block with a specific format.
Solution: Add the trailing data block to the Linux kernel image.
Reproduction: Apply latest firmware, perform IPL with Secure Boot
enabled.
Fix: available upstream with
Upstream-ID: aa127a069ef312aca02b730d5137e1778d0c3ba7
Preventive: yes
Date: 2022-10-27
Author: Peter Oberparleiter <[email protected]>
Component: kernel
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1996071/+subscriptions
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