The arm32 platform literally does not support the memory primitives needed to
safely to RDMA. If we enable the support, and someone uses it, there is
nothing we can do to prevent them running the risk of memory corruption. So we
probably need to exclude arm32 from all these packages, or conditionally make
the packages exclude RDMA support on arm32.
Sent from my iPad
> On Dec 7, 2019, at 1:04 AM, Orion Poplawski <or...@nwra.com> wrote:
>
> FYI:
>
> rdma-core 26.1-1.fc32 dropped support for %arm:
>
> # 32-bit arm is missing required arch-specific memory barriers,
> ExcludeArch: %{arm}
>
> This broke dependecies for the arm package of openmpi
> (https://bugzilla.redhat.com/show_bug.cgi?id=1780584)
>
> This may have affected other users of rdma-core, depending of if they use
> rdma on arm. Using my x86_64 machine:
>
> $ dnf repoquery --whatrequires libibverbs.so.1'()(64bit)' --source
> Last metadata expiration check: 0:14:21 ago on Fri 06 Dec 2019 10:35:11 PM
> MST.
> ceph-14.2.4-3.fc32.src.rpm
> dapl-2.1.9-10.fc31.src.rpm
> fio-3.16-2.fc32.src.rpm
> ga-5.6.5-6.fc31.src.rpm
> glusterfs-7.0-1.fc32.src.rpm
> libfabric-1.9.0-1.fc32.src.rpm
> libiscsi-1.18.0-9.fc32.src.rpm
> libocrdma-1.0.8-6.fc27.src.rpm
> nwchem-6.8.2-1.fc32.src.rpm
> openmpi-3.1.5-1.module_f32+7117+998651d7.src.rpm
> orangefs-2.9.7-6.fc31.src.rpm
> perftest-4.2-5.fc31.src.rpm
> qemu-4.2.0-0.3.rc2.fc32.src.rpm
> qperf-0.4.9-16.fc31.src.rpm
> rdma-core-26.1-1.fc32.src.rpm
> scsi-target-utils-1.0.70-9.fc31.src.rpm
> ucx-1.6.1-1.fc32.src.rpm
>
> This has also broken hwloc-devel on arm:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1780813
>
> Is this a definite hard requirement, or can we have at least a minimal
> rdma-core for arm to avoid having to propagate a bunch of arm conditionals
> down the stack?
>
> --
> Orion Poplawski
> Manager of NWRA Technical Systems 720-772-5637
> NWRA, Boulder/CoRA Office FAX: 303-415-9702
> 3380 Mitchell Lane or...@nwra.com
> Boulder, CO 80301 https://www.nwra.com/
>
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