Following simple patch disables rdma support for ARM32. Please consider apply it. I had a working scratch building for it. Thanks.

https://koji.fedoraproject.org/koji/taskinfo?taskID=21506257

diff --git a/papi.spec b/papi.spec
index e751041..70cbf53 100644
--- a/papi.spec
+++ b/papi.spec
@@ -2,7 +2,7 @@
 Summary: Performance Application Programming Interface
 Name: papi
 Version: 5.5.1
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: BSD
 Group: Development/System
 Requires: papi-libs = %{version}-%{release}
@@ -22,8 +22,10 @@ BuildRequires: libpfm-static >= 4.6.0-1
 %endif
 # Following required for net component
 BuildRequires: net-tools
+%ifnarch %{arm}
 # Following required for inifiband component
 BuildRequires: libibmad-devel
+%endif
 BuildRequires: perl-generators
 #Right now libpfm does not know anything about s390 and will fail
 ExcludeArch: s390 s390x
@@ -87,7 +89,9 @@ autoconf
 pushd components
 #pushd cuda; ./configure; popd
 #pushd host_micpower; ./configure; popd
+%ifnarch %{arm}
 pushd infiniband_umad; %configure; popd
+%endif

This fix looks reasonable. papi is back to building on rawhide (https://koji.fedoraproject.org/koji/buildinfo?buildID=962325). Thanks.

(In reply to William Cohen from comment #2)
> This fix looks reasonable. papi is back to building on rawhide
> (https://koji.fedoraproject.org/koji/buildinfo?buildID=962325). Thanks.

This is a f28 build. Could you please backport this patch to f27 branch of papi?

Fedora 27 papi has also been rebuilt with this patch:

https://koji.fedoraproject.org/koji/buildinfo?buildID=962646