[19.10 FEAT] Add libhugetlbfs for s390x >= 2.19

[bugproxy]

As s390x does support 1M huge pages (as well as 2GB huge pages if requested) the library libhugetlbfs should be part of the distro.

Currently available for all other platforms

Information from original Bugzilla:
libhugetlbfs is not build for s390x, e.g. check
https://launchpad.net/ubuntu/+source/libhugetlbfs
and s390x is not on the list of architectures.

[Frank Heimes (fheimes)]

So far we have it for just:
 libhugetlbfs0 | 2.11-0ubuntu1 | precise/universe | amd64, i386, powerpc
 libhugetlbfs0 | 2.17-0ubuntu2 | trusty/universe | amd64, arm64, armhf, i386, powerpc, ppc64el
 libhugetlbfs0 | 2.19-0ubuntu1 | xenial/universe | amd64, arm64, armhf, i386, powerpc, ppc64el
 libhugetlbfs0 | 2.19-0ubuntu1 | bionic/universe | amd64, arm64, armhf, i386, ppc64el
 libhugetlbfs0 | 2.19-0ubuntu1 | cosmic/universe | amd64, arm64, armhf, i386, ppc64el
 libhugetlbfs0 | 2.19-0ubuntu1 | disco/universe | amd64, arm64, armhf, i386, ppc64el

[Frank Heimes (fheimes)]

Marked as Incomplete until Ubuntu E* development started.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2019-04-04 05:02 EDT-------
Business Case:
System z does support hugepages since z10 (and for z/VM since 6.4). To configure and use hugepages this library is necessary for all programs that do not have native large page support.

[Dimitri John Ledkov (xnox)]

I wonder if we'd also want to bump the dep to 2.21 from https://github.com/libhugetlbfs/libhugetlbfs/releases in EE series.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2019-04-04 08:47 EDT-------
@Xnox: Make sense from IBM perspective.. Thx....

[Dimitri John Ledkov (xnox)]

Given it's a leaf package, in universe, without any reverse dependencies i managed to enable v2.19 for s390x in disco now. Will be on the mirrors soon.

https://launchpad.net/ubuntu/+source/libhugetlbfs/2.19-0ubuntu2

Upgrade to v2.21 will have to wait until EE series open.

[Frank Heimes (fheimes)]

Fantastic, thx a lot!

[Frank Heimes (fheimes)]

Just landed in disco:
 libhugetlbfs0 | 2.19-0ubuntu2 | disco/universe | s390x
changing to Fix Released - and switching visibility.