s390/vdso: Drop LBASE_VDSO

This constant is always "0", providing no value and making the logic
harder to understand.
Also prepare for a consolidation of the vdso linkerscript logic by
aligning it with other architectures.

Signed-off-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Link: https://lore.kernel.org/all/[email protected]

Author: t-8ch

arch/s390/include/asm/vdso.h

@@ -12,9 +12,6 @@ int vdso_getcpu_init(void);
 
 #endif /* __ASSEMBLY__ */
 
-/* Default link address for the vDSO */
-#define VDSO_LBASE	0
-
 #define __VVAR_PAGES	2
 
 #define VDSO_VERSION_STRING	LINUX_2.6.29

arch/s390/kernel/vdso32/vdso32.lds.S

@@ -16,7 +16,7 @@ SECTIONS
 #ifdef CONFIG_TIME_NS
 	PROVIDE(_timens_data = _vdso_data + PAGE_SIZE);
 #endif
-	. = VDSO_LBASE + SIZEOF_HEADERS;
+	. = SIZEOF_HEADERS;
 
 	.hash		: { *(.hash) }			:text
 	.gnu.hash	: { *(.gnu.hash) }

arch/s390/kernel/vdso64/vdso64.lds.S

@@ -18,7 +18,7 @@ SECTIONS
 #ifdef CONFIG_TIME_NS
 	PROVIDE(_timens_data = _vdso_data + PAGE_SIZE);
 #endif
-	. = VDSO_LBASE + SIZEOF_HEADERS;
+	. = SIZEOF_HEADERS;
 
 	.hash		: { *(.hash) }			:text
 	.gnu.hash	: { *(.gnu.hash) }