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vdso/ARM: Make union vdso_data_store available for all architectures

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The vDSO data page "union vdso_data_store" is defined in an ARM specific
header file and also defined in several other places.

Move the definition from the ARM header file into the generic vdso datapage
header to make it also usable for others and to prevent code duplication.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240219153939.75719-5-anna-maria@linutronix.de
This commit is contained in:
Anna-Maria Behnsen
2024-02-19 16:39:33 +01:00
committed by Thomas Gleixner
parent 4eb0833d7d
commit a0d2fcd62a
5 changed files with 13 additions and 32 deletions
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10
include/vdso/datapage.h
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@@ -19,6 +19,8 @@
#include <vdso/time32.h>
#include <vdso/time64.h>
#include <asm/page.h>
#ifdef CONFIG_ARCH_HAS_VDSO_DATA
#include <asm/vdso/data.h>
#else
@@ -121,6 +123,14 @@ struct vdso_data {
extern struct vdso_data _vdso_data[CS_BASES] __attribute__((visibility("hidden")));
extern struct vdso_data _timens_data[CS_BASES] __attribute__((visibility("hidden")));
/**
* union vdso_data_store - Generic vDSO data page
*/
union vdso_data_store {
struct vdso_data data[CS_BASES];
u8 page[PAGE_SIZE];
};
/*
* The generic vDSO implementation requires that gettimeofday.h
* provides: