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charset="utf-8" Building cxl_test with LLVM=3D1 (ld.lld) fails in modpost: """ cxl_core: .export_symbol section references '__wrap_...', but it does not seem to be an export symbol """ cxl_test --wraps 6 symbols that cxl_core both defines and exports. GNU ld only wraps undefined references, but ld.lld also redirects references to defined symbols, so cxl_core's own EXPORT_SYMBOL entries get rewritten to __wrap_* and modpost rejects them. cxl_core never calls these symbols, so wrap them only in the caller modules via LDFLAGS_.o instead of the global ldflags-y. Signed-off-by: Richard Cheng Reviewed-by: Dave Jiang --- tools/testing/cxl/Kbuild | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild index 2be1df80fcc9..e49ce644b4b1 100644 --- a/tools/testing/cxl/Kbuild +++ b/tools/testing/cxl/Kbuild @@ -4,16 +4,20 @@ ldflags-y +=3D --wrap=3Dis_acpi_device_node ldflags-y +=3D --wrap=3Dacpi_evaluate_integer ldflags-y +=3D --wrap=3Dacpi_pci_find_root ldflags-y +=3D --wrap=3Dnvdimm_bus_register -ldflags-y +=3D --wrap=3Dcxl_await_media_ready -ldflags-y +=3D --wrap=3Ddevm_cxl_add_rch_dport -ldflags-y +=3D --wrap=3Dcxl_endpoint_parse_cdat -ldflags-y +=3D --wrap=3Ddevm_cxl_endpoint_decoders_setup ldflags-y +=3D --wrap=3Dhmat_get_extended_linear_cache_size -ldflags-y +=3D --wrap=3Ddevm_cxl_add_dport_by_dev -ldflags-y +=3D --wrap=3Ddevm_cxl_switch_port_decoders_setup ldflags-y +=3D --wrap=3Dwalk_hmem_resources ldflags-y +=3D --wrap=3Dregion_intersects ldflags-y +=3D --wrap=3Dregion_intersects_soft_reserve +wrap_cxl_core :=3D --wrap=3Dcxl_await_media_ready +wrap_cxl_core +=3D --wrap=3Ddevm_cxl_add_rch_dport +wrap_cxl_core +=3D --wrap=3Ddevm_cxl_add_dport_by_dev +wrap_cxl_core +=3D --wrap=3Ddevm_cxl_switch_port_decoders_setup +wrap_cxl_core +=3D --wrap=3Ddevm_cxl_endpoint_decoders_setup +wrap_cxl_core +=3D --wrap=3Dcxl_endpoint_parse_cdat +LDFLAGS_cxl_acpi.o +=3D $(wrap_cxl_core) +LDFLAGS_cxl_pmem.o +=3D $(wrap_cxl_core) +LDFLAGS_cxl_port.o +=3D $(wrap_cxl_core) +LDFLAGS_cxl_mem.o +=3D $(wrap_cxl_core) =20 DRIVERS :=3D ../../../drivers DAX_HMEM_SRC :=3D $(DRIVERS)/dax/hmem --=20 2.43.0