exec: Remove AT_VECTOR_SIZE_ARCH from UAPI

[PATCH 14/15] alpha: remove AT_VECTOR_SIZE_ARCH from UAPI

Posted by Thomas Weißschuh 1 month, 1 week ago

There is nothing userspace can do with this value. In the kernel is
always combined with AT_VECTOR_SIZE_BASE, which is not exposed to
userspace and also changes from time to time.

Move the symbol to a kernel-internal header.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 arch/alpha/include/asm/auxvec.h      | 7 +++++++
 arch/alpha/include/uapi/asm/auxvec.h | 8 +++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/alpha/include/asm/auxvec.h b/arch/alpha/include/asm/auxvec.h
new file mode 100644
index 000000000000..fa90ee4f899c
--- /dev/null
+++ b/arch/alpha/include/asm/auxvec.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_ALPHA_AUXVEC_H
+#define __ASM_ALPHA_AUXVEC_H
+
+#define AT_VECTOR_SIZE_ARCH 4 /* entries in ARCH_DLINFO */
+
+#endif /* __ASM_ALPHA_AUXVEC_H */
diff --git a/arch/alpha/include/uapi/asm/auxvec.h b/arch/alpha/include/uapi/asm/auxvec.h
index 57cae8780d81..d21b87b6730a 100644
--- a/arch/alpha/include/uapi/asm/auxvec.h
+++ b/arch/alpha/include/uapi/asm/auxvec.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef __ASM_ALPHA_AUXVEC_H
-#define __ASM_ALPHA_AUXVEC_H
+#ifndef __UAPI_ASM_ALPHA_AUXVEC_H
+#define __UAPI_ASM_ALPHA_AUXVEC_H
 
 /* Reserve these numbers for any future use of a VDSO.  */
 #if 0
@@ -22,6 +22,4 @@
 #define AT_L2_CACHESHAPE	36
 #define AT_L3_CACHESHAPE	37
 
-#define AT_VECTOR_SIZE_ARCH 4 /* entries in ARCH_DLINFO */
-
-#endif /* __ASM_ALPHA_AUXVEC_H */
+#endif /* __UAPI_ASM_ALPHA_AUXVEC_H */

-- 
2.53.0

Re: [PATCH 14/15] alpha: remove AT_VECTOR_SIZE_ARCH from UAPI

Posted by Magnus Lindholm 3 weeks, 1 day ago

On Mon, Mar 2, 2026 at 1:32 PM Thomas Weißschuh
<thomas.weissschuh@linutronix.de> wrote:
>
> There is nothing userspace can do with this value. In the kernel is
> always combined with AT_VECTOR_SIZE_BASE, which is not exposed to
> userspace and also changes from time to time.
>
> Move the symbol to a kernel-internal header.
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
>  arch/alpha/include/asm/auxvec.h      | 7 +++++++
>  arch/alpha/include/uapi/asm/auxvec.h | 8 +++-----
>  2 files changed, 10 insertions(+), 5 deletions(-)
>

Build-tested on alpha, no issues here.

Acked-by: Magnus Lindholm <linmag7@gmail.com>