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06f99ac87e
This adds a const to the definitions vvar.c makes, so that the vdso_* variables go into .rodata instead of .data. This is essentially a cosmetic change, just giving the section headers in the vDSO file more pleasing flags. These variables are read-only from the perspective of the vDSO itself and user mode, even though the contents of the DSO image were adjusted at boot. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
13 lines
460 B
C
13 lines
460 B
C
/* Define pointer to external vDSO variables.
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These are part of the vDSO. The kernel fills in the real addresses
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at boot time. This is done because when the vdso is linked the
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kernel isn't yet and we don't know the final addresses. */
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#include <linux/kernel.h>
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#include <linux/time.h>
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#include <asm/vsyscall.h>
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#include <asm/timex.h>
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#include <asm/vgtod.h>
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#define VEXTERN(x) typeof (__ ## x) *const vdso_ ## x = (void *)VMAGIC;
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#include "vextern.h"
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