[PATCH 03/15] asm-generic: add an in-kernel auxvec.h header

[Thomas Weißschuh]

Upcoming changes will create architecture-specific asm/auxvec.h headers.
Add asm-generic infrastructure to handle the fallbacks for architectures
which are not migrated yet and those which won't require their own
definition.

Extend the list of includes in linux/auxvec.h to cover all potential
low-level auxvec.h headers.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh at linutronix.de>
---
 MAINTAINERS                  | 2 ++
 include/asm-generic/Kbuild   | 1 +
 include/asm-generic/auxvec.h | 7 +++++++
 include/linux/auxvec.h       | 2 ++
 4 files changed, 12 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 7a2c952d72bd..239c4e3ef5c6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9573,12 +9573,14 @@ L:	linux-mm at kvack.org
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/execve
 F:	Documentation/userspace-api/ELF.rst
+F:	arch/*/include/asm/auxvec.h
 F:	arch/*/include/uapi/asm/auxvec.h
 F:	fs/*binfmt_*.c
 F:	fs/Kconfig.binfmt
 F:	fs/exec.c
 F:	fs/tests/binfmt_*_kunit.c
 F:	fs/tests/exec_kunit.c
+F:	include/asm-generic/auxvec.h
 F:	include/linux/auxvec.h
 F:	include/linux/binfmts.h
 F:	include/linux/elf.h
diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
index 9aff61e7b8f2..756a991aef67 100644
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@@ -6,6 +6,7 @@
 
 mandatory-y += atomic.h
 mandatory-y += archrandom.h
+mandatory-y += auxvec.h
 mandatory-y += barrier.h
 mandatory-y += bitops.h
 mandatory-y += bug.h
diff --git a/include/asm-generic/auxvec.h b/include/asm-generic/auxvec.h
new file mode 100644
index 000000000000..e4abd2a8c5ed
--- /dev/null
+++ b/include/asm-generic/auxvec.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_GENERIC_AUXVAL_H__
+#define __ASM_GENERIC_AUXVAL_H__
+
+#define AT_VECTOR_SIZE_ARCH 0
+
+#endif
diff --git a/include/linux/auxvec.h b/include/linux/auxvec.h
index 943e8b80b41e..68c9d6b118a9 100644
--- a/include/linux/auxvec.h
+++ b/include/linux/auxvec.h
@@ -2,7 +2,9 @@
 #ifndef _LINUX_AUXVEC_H
 #define _LINUX_AUXVEC_H
 
+#include <uapi/asm/auxvec.h>
 #include <uapi/linux/auxvec.h>
+#include <asm/auxvec.h>
 
 #define AT_VECTOR_SIZE_BASE 22 /* NEW_AUX_ENT entries in auxiliary table */
   /* number of "#define AT_.*" above, minus {AT_NULL, AT_IGNORE, AT_NOTELF} */

-- 
2.53.0