linux-kernel - Re: [PATCH RESEND v1 2/4] lib/vdso: Add vdso_data pointer as input to __arch_get_timens_vdso

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Message-ID: <87pmyz1xfd.ffs@nanos.tec.linutronix.de>
Date:   Mon, 12 Apr 2021 14:48:06 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        dima@...sta.com, avagin@...il.com, arnd@...db.de,
        vincenzo.frascino@....com, luto@...nel.org,
        linux-arch@...r.kernel.org
Subject: Re: [PATCH RESEND v1 2/4] lib/vdso: Add vdso_data pointer as input to __arch_get_timens_vdso_data()

On Wed, Mar 31 2021 at 16:48, Christophe Leroy wrote:
> For the same reason as commit e876f0b69dc9 ("lib/vdso: Allow
> architectures to provide the vdso data pointer"), powerpc wants to
> avoid calculation of relative position to code.
>
> As the timens_vdso_data is next page to vdso_data, provide
> vdso_data pointer to __arch_get_timens_vdso_data() in order
> to ease the calculation on powerpc in following patches.
>
> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>