Commit 9693336d authored by James Hogan's avatar James Hogan Committed by Ben Hutchings

s390: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

commit 68c5cf5a upstream.

AT_VECTOR_SIZE_ARCH should be defined with the maximum number of
NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined
for s390 at all even though ARCH_DLINFO can contain one NEW_AUX_ENT when
VDSO is enabled.

This shouldn't be a problem as AT_VECTOR_SIZE_BASE includes space for
AT_BASE_PLATFORM which s390 doesn't use, but lets define it now and add
the comment above ARCH_DLINFO as found in several other architectures to
remind future modifiers of ARCH_DLINFO to keep AT_VECTOR_SIZE_ARCH up to
date.

Fixes: b020632e ("[S390] introduce vdso on s390")
Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
parent 1e4ea5ad
...@@ -210,6 +210,7 @@ do { \ ...@@ -210,6 +210,7 @@ do { \
#define STACK_RND_MASK 0x7ffUL #define STACK_RND_MASK 0x7ffUL
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO \ #define ARCH_DLINFO \
do { \ do { \
if (vdso_enabled) \ if (vdso_enabled) \
......
...@@ -3,4 +3,6 @@ ...@@ -3,4 +3,6 @@
#define AT_SYSINFO_EHDR 33 #define AT_SYSINFO_EHDR 33
#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */
#endif #endif
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