diff --git a/kernel-tools.spec b/kernel-tools.spec
index 93e3a52..7bbfa7c 100644
--- a/kernel-tools.spec
+++ b/kernel-tools.spec
@@ -262,9 +262,13 @@ pathfix.py -pni "%{__python3} %{py3_shbang_opts}" tools/ tools/perf/scripts/pyth
 
 cd linux-%{kversion}
 
+%if 0%{?rhel} && 0%{?rhel} >= 9
+# can't use CORESIGHT=1 on hs.el8: 
+# Makefile.config:518: *** Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1.  Stop.
 %ifarch aarch64
 %global perf_build_extra_opts CORESIGHT=1
 %endif
+%endif
 
 %global perf_make \
   make %{?make_opts} EXTRA_CFLAGS="${RPM_OPT_FLAGS}" LDFLAGS="%{__global_ldflags}" %{?cross_opts} -C tools/perf V=1 NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 WERROR=0 NO_LIBUNWIND=1 HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_STRLCPY=1 NO_BIONIC=1 LIBTRACEEVENT_DYNAMIC=1 %{?perf_build_extra_opts} prefix=%{_prefix} PYTHON=%{__python3}