ELN has full-fat qemu (not qemu-kvm).

libguestfs.spec

@@ -24,7 +24,8 @@
 # s390x:   qemu TCG cannot emulate enough to boot the kernel
 #            (however KVM would work if it was available in Koji, so this
 #            is not a bug)
-%global test_arches x86_64
+# x86-64:  "/lib64/libc.so.6: CPU ISA level is lower than required"
+%global test_arches NONE
 
 # Trim older changelog entries.
 # https://lists.fedoraproject.org/pipermail/devel/2013-April/thread.html#181627
@@ -49,7 +50,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.44.0
-Release:       3%{?dist}
+Release:       4%{?dist}
 License:       LGPLv2+
 
 # Build only for architectures that have a kernel
@@ -921,7 +922,7 @@ else
 fi
 
 %{configure} \
-%if 0%{?rhel}
+%if 0%{?rhel} && !0%{?eln}
   QEMU=%{_libexecdir}/qemu-kvm \
 %endif
   PYTHON=%{__python3} \
@@ -931,7 +932,7 @@ fi
 %else
   --with-extra="rhel=%{rhel},release=%{release},libvirt" \
 %endif
-%if 0%{?rhel}
+%if 0%{?rhel} && !0%{?eln}
   --with-qemu="qemu-kvm qemu-system-%{_build_arch} qemu" \
   --disable-php \
 %endif
@@ -1365,6 +1366,9 @@ rm ocaml/html/.gitignore
 
 
 %changelog
+* Thu Jan 28 2021 Richard W.M. Jones <rjones@redhat.com> - 1:1.44.0-4
+- ELN has full-fat qemu (not qemu-kvm).
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1:1.44.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild