On Sunday, 08 December 2019 at 04:36, Doug Ledford wrote:
> > On Dec 7, 2019, at 1:04 AM, Orion Poplawski <orion@xxxxxxxx> 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?
>
> 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.
The change to rdma-core.spec in commit b631ce466538bdee6e19be3286fb8cbeb5c73de6:
...
+# 32-bit arm is missing required arch-specific memory barriers,
+ExcludeArch: %{arm}
...
should have been communicated to all depdent package maintainers in
advance, as this is effectively removing the package for armv7hl from
rawhide. Cc'ing the committer.
Why was this built on arm32 before if RDMA is not support arm32?
Regards,
Dominik
--
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There should be a science of discontent. People need hard times and
oppression to develop psychic muscles.
-- from "Collected Sayings of Muad'Dib" by the Princess Irulan
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