** Changed in: ubuntu-z-systems
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1960580
Title:
[22.04 FEAT] [KRN1918] Long kernel command line on s390x
Status in Ubuntu on IBM z Systems:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Bug description:
Feature: Long kernel command line
Description:
Allow to handle command lines with a length of up to 4096 bytes by kernel. It
happened in the past that our supported command line size of 896 bytes was
sometimes too short - while x86, powerpc, and arm each support 2048 bytes.
This requires:
- an ABI interface to the kernel image, so that tools can figure out if the
kernel supports large command lines (might be a feature bitmap at a fixed
location)
- zipl, genprotimg, qemu, kexec-tools and changes (depending on the kernel
side implementation)
- in-kernel ipl support changes (IPL from reader)
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