** Changed in: ubuntu-z-systems
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1783086
Title:
[18.10 FEAT] Enable kexec_file_load system call - kexec-tools part
Status in Ubuntu on IBM z Systems:
Fix Released
Status in kexec-tools package in Ubuntu:
Fix Released
Bug description:
FeatureFreeze Exception (FFE):
==============================
Reason, rationale and benefits:
-------------------------------
The feature is based on the combination of two tickets:
- 1783088
this ticket for the kernel part was just created for completeness reasons
this part of the functionality automatically came with kernel 4.17
hence this LP ticket is 'Fix Released'
- 1783086
this is the 'user space' part of the functionality that should be addressed
by the FFE
There was a little confusion if this belongs to the FeatureFreeze or
KernelFreeze.
Since it's a package maintained by the kernel team the misconception came
up that it is not affected by the Feature, but by the Kernel Freeze,
hence it was not processed in time and information was missing.
Without this patch the (new) "--kexec-file-syscall" option for s390x cannot
be used with cosmic.
And the customer/partner needs to wait for the next d* release (means for
several month).
This FFE now asks if the single commit (below) can be added to the
kexec-tools (Ubuntu) of cosmic:
Description:
------------
commit d4a948c268272cf37c71be820fb02bf40e56292b
Author: Philipp Rudo <pr...@linux.ibm.com>
Date: Wed May 16 14:27:18 2018 +0200
kexec/s390: Add support for kexec_file_load
Since kernel 4.17-rc2 s390 supports the kexec_file_load system call.
Add the new system call to kexec-tools and provide the -s
(--kexec-file-syscall) option for s390 to support this new feature.
Impact / Risk:
--------------
Since the function / option is new and for s390(x) the risk is pretty low.
There are no APIs expected to break or existing functions that are expected
to fail while introducing this.
Package dependencies will not change, nor the install/upgrade behaviour after
this got added.
Testing of the code, test builds and verification was already done by IBM.
(see comment # 4)
_________________________
Provide a capability to load signed kernels. I.e. to boot signed kernels
- from a Linux based boot loader or initial boot image
- as required for secure/trusted boot mechanisms
- for kdump kernels
Function consist of 2 contributions
- kernel 4.17 (available)
- kexec-tools (currently not available)
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