[PATCH 5.15 353/532] um: Use HOST_DIR for mrproper

From: Kees Cook commit a5a319ec2c2236bb96d147c16196d2f1f3799301 upstream. 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

[PATCH v2 1/2] UML: hard-code the result of 'uname -s'

We rely on 'uname -s' returning 'Linux' because there are os-Linux/ directories, but no other os-*/. Supporting a non-Linux host is unlikely to happen. Let's hard-code 'Linux'. Signed-off-by: Masahiro Yamada --- (no changes since v1) arch/um/Makefile | 7 +++ arch/x86/um/Makefile | 2

[PATCH v2 2/2] UML: use obj-y to descend into arch/um/*/

The single build rule does not work with the core-y syntax. [1] Use the standard obj-y syntax. [1]: https://lore.kernel.org/linux-kbuild/d57ba55f-20a3-b836-783d-b49c8a161...@kernel.org/T/#m7bc402e1e038f00ebcf2e92ed7fcb8a52fc1ea44 Signed-off-by: Masahiro Yamada --- Changes in v2: - Rephase t

[PATCH 2/2] UML: use obj-y to descend into arch/um/*/

I like to use obj-y in as many places as possible. Change the core-y to obj-y. It fixes the single build issue. [1] [1]: https://lore.kernel.org/linux-kbuild/d57ba55f-20a3-b836-783d-b49c8a161...@kernel.org/T/#m7bc402e1e038f00ebcf2e92ed7fcb8a52fc1ea44 Signed-off-by: Masahiro Yamada --- arch/u

[PATCH 1/2] UML: hard-code the result of 'uname -s'

We rely on 'uname -s' returning 'Linux' as there are arch/um/os-Linux/ and arch/x86/um/os-Linux/, but no other os-*/ directories. Supporting a non-Linux host is unlikely to happen. Let's hard-code 'Linux'. Signed-off-by: Masahiro Yamada --- arch/um/Makefile | 7 +++ arch/x86/um/Makefi