On Tue, 6 Jun 2023 15:24:45 -0700, Kees Cook wrote:
When HEADER_ARCH was introduced, the MRPROPER_FILES (then MRPROPER_DIRS) list wasn't adjusted, leaving SUBARCH as part of the path argument. This resulted in the "mrproper" target not cleaning up arch/x86/... when SUBARCH was specified. Since HOST_DIR is arch/$(HEADER_ARCH), use it instead to get the correct path.
[...]
Build tested with/with-out patch, and I can see "mrproper" target correctly cleaning up now.
Applied to for-next/hardening, thanks!
[1/1] um: Use HOST_DIR for mrproper https://git.kernel.org/kees/c/48ad87a5be06