x86/vdso: Access rng vdso data without vvar.h

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The vdso_rng_data is at a well-known offset in the vvar page.
Make use of this invariant to remove the usage of vvar.h.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-16-b64f0842d512@linutronix.de

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Thomas Weißschuh 2024-10-10 09:01:18 +02:00 • committed by Thomas Gleixner

parent 59b7761638

commit c3a190d425

3 changed files with 6 additions and 9 deletions

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2

arch/x86/entry/vdso/vdso-layout.lds.S

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8

arch/x86/include/asm/vdso/getrandom.h

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5

arch/x86/include/asm/vvar.h

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