Re: [LTP] [PATCH] lib: Check minimal supported kernel version

["Kubaj, Piotr" <piotr.kubaj@intel.com>]

W dniu pią, 04.09.2026 o godzinie 11∶20 +0200, użytkownik Cyril Hrubis
napisał:
> Hi!
> > LTP does not support kernels older than 4.4, but this requirement
> > was
> > only documented in static text without automated runtime
> > validation.
> > 
> > Define the minimal supported kernel version in tst_kvercmp.h so
> > that
> > the documentation fetches it dynamically and the core library
> > aborts
> > unsupported kernels with TCONF during test setup.
> 
> Great idea, but I wouldn't tst_brk() on older kernels, I would just
> print a message that there may be failures becuase older kernels are
> not
> supported or tested.
> 
> LTP has been historically used for many different purposes, e.g. for
> testing BSD compatibility layout for running Linux binaries and I
> fear
> that hard stop on older kernel versions would break these usecases.
> 
> -- 
> Cyril Hrubis
> chrubis@suse.cz
Hi,

speaking with my pkubaj@FreeBSD.org hat on, see
https://cgit.freebsd.org/src/tree/sys/compat/linux/linux_mib.h

The current claimed compatibility level is Linux 5.15.0. Even if you
look at
https://cgit.freebsd.org/src/tree/sys/compat/linux/linux_mib.h?h=releng%2F14.4
(which is the oldest still-supported version), it's also 5.15.0.

I think NetBSD also has a Linux compatibility layer, but I'm not sure
how up-to-date it is.
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