linux-kernel - Re: [PATCH vdsotest] Use vdso wrapper for gettimeofday()

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Message-ID: <871rrzjq5j.fsf@linux.ibm.com>
Date:   Thu, 16 Jan 2020 10:56:56 -0600
From:   Nathan Lynch <nathanl@...ux.ibm.com>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH vdsotest] Use vdso wrapper for gettimeofday()

Hi Christophe,

Christophe Leroy <christophe.leroy@....fr> writes:
> To properly handle errors returned by gettimeofday(), the
> DO_VDSO_CALL() macro has to be used, otherwise vdsotest
> misinterpret VDSO function return on error.
>
> This has gone unnoticed until now because the powerpc VDSO
> gettimeofday() always succeed, but while porting powerpc to
> generic C VDSO, the following has been encountered:

Thanks for this, I'll review it soon.

Can you point me to patches for the powerpc generic vdso work?