> TODO: Need to check if we can still compile and run 31bit xenial s390
binaries, on a kernel with COMPAT_32BIT_TIME turned off, to support
launchpad build farm itself.
This is now complete. I believe we are capable of continue to building
ESM/EOL releases, even with COMPAT turned off. Specifically to like
continue building xenials' libc-s390 even if the host kernel in the
build farm is noble+ kernel with compat turned off.
If it helps your analysis i can provide you a jammy kernel in a ppa that
has compat turned off, such that you can empirically run anything you
want and observe if things you think you might care about still work or
not.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: ubuntu-z-systems
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/2038583
Title:
Turning COMPAT_32BIT_TIME off on s390x
Status in Ubuntu on IBM z Systems:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Bug description:
This will prevent existing s390 binaries to operate correctly, if they
are still using 32bit time.
24.04 LTS is likely to be used for 10 years. And if allowed to overrun
and remain active in the field in 2038 can lead to catastrophic
failure in the field due to these syscalls enabled and used.
I would like to request if we can turn off COMPAT_32BIT_TIME on every
architecture, thus this will be arch by arch bug report, and arch by
arch decision.
This needs to be a per-arch decision, potentially taking into
consideration bi-arch userspace support.
config COMPAT_32BIT_TIME
bool "Provide system calls for 32-bit time_t"
default !64BIT || COMPAT
help
This enables 32 bit time_t support in addition to 64 bit time_t support.
This is relevant on all 32-bit architectures, and 64-bit architectures
as part of compat syscall handling.
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