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arm64: vdso: Drop LBASE_VDSO

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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 <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-4-b64f0842d512@linutronix.de
This commit is contained in:
Thomas Weißschuh 2024-10-10 09:01:06 +02:00 committed by Thomas Gleixner
parent 98333a84e3
commit 0973fed6a5
3 changed files with 3 additions and 10 deletions
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9
arch/arm64/include/asm/vdso.h
View File

@ -5,13 +5,6 @@
#ifndef __ASM_VDSO_H
#define __ASM_VDSO_H
/*
* Default link address for the vDSO.
* Since we randomise the VDSO mapping, there's little point in trying
* to prelink this.
*/
#define VDSO_LBASE 0x0
#define __VVAR_PAGES 2
#ifndef __ASSEMBLY__
@ -20,7 +13,7 @@
#define VDSO_SYMBOL(base, name) \
({ \
(void *)(vdso_offset_##name - VDSO_LBASE + (unsigned long)(base)); \
(void *)(vdso_offset_##name + (unsigned long)(base)); \
})
extern char vdso_start[], vdso_end[];

2
arch/arm64/kernel/vdso/vdso.lds.S
View File

@ -25,7 +25,7 @@ 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) }

2
arch/arm64/kernel/vdso32/vdso.lds.S
View File

@ -22,7 +22,7 @@ SECTIONS
#ifdef CONFIG_TIME_NS
PROVIDE_HIDDEN(_timens_data = _vdso_data + PAGE_SIZE);
#endif
. = VDSO_LBASE + SIZEOF_HEADERS;
. = SIZEOF_HEADERS;
.hash : { *(.hash) } :text
.gnu.hash : { *(.gnu.hash) }