--- i/tests/Makefile.am
+++ w/tests/Makefile.am
@@ -537,6 +537,10 @@ MISC_TESTS = \
 
 TESTS = $(GEN_TESTS) $(DECODER_TESTS) $(MISC_TESTS) $(STACKTRACE_TESTS)
 
+## See https://bugzilla.redhat.com/1978412
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
+
 XFAIL_TESTS_ =
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)
--- i/tests-m32/Makefile.am
+++ w/tests-m32/Makefile.am
@@ -537,6 +537,10 @@ MISC_TESTS = \
 
 TESTS = $(GEN_TESTS) $(DECODER_TESTS) $(MISC_TESTS) $(STACKTRACE_TESTS)
 
+## See https://bugzilla.redhat.com/1978412
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
+
 XFAIL_TESTS_ =
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)
--- i/tests-mx32/Makefile.am
+++ w/tests-mx32/Makefile.am
@@ -537,6 +537,10 @@ MISC_TESTS = \
 
 TESTS = $(GEN_TESTS) $(DECODER_TESTS) $(MISC_TESTS) $(STACKTRACE_TESTS)
 
+## See https://bugzilla.redhat.com/1978412
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
+
 XFAIL_TESTS_ =
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)
--- i/tests/Makefile.in.old	2021-07-01 21:55:52.509065912 +0200
+++ w/tests/Makefile.in	2021-07-01 21:56:15.296867604 +0200
@@ -7497,6 +7497,8 @@
 	umovestr_cached.test \
 	# end of MISC_TESTS
 
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
 XFAIL_TESTS_ = 
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)
--- i/tests-m32/Makefile.in.old	2021-07-01 21:46:36.524236568 +0200
+++ w/tests-m32/Makefile.in	2021-07-01 21:49:15.460241800 +0200
@@ -7497,6 +7497,8 @@
 	umovestr_cached.test \
 	# end of MISC_TESTS
 
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
 XFAIL_TESTS_ = 
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)
--- i/tests-mx32/Makefile.in.old	2021-07-01 21:46:36.524236568 +0200
+++ w/tests-mx32/Makefile.in	2021-07-01 21:49:15.460241800 +0200
@@ -7497,6 +7497,8 @@
 	umovestr_cached.test \
 	# end of MISC_TESTS
 
+XFAIL_TESTS_powerpc64 = ipc_shm.gen.test ipc_shm-Xabbrev.gen.test ipc_shm-Xraw.gen.test ipc_shm-Xverbose.gen.test
+XFAIL_TESTS_powerpc64le = ipc_msg.gen.test ipc_msg-Xabbrev.gen.test ipc_msg-Xraw.gen.test ipc_msg-Xverbose.gen.test
 XFAIL_TESTS_ = 
 XFAIL_TESTS_m32 = $(STACKTRACE_XFAIL_TESTS)
 XFAIL_TESTS_mx32 = $(STACKTRACE_XFAIL_TESTS)