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

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Message-ID: <1c2c6da1-e10f-d2a8-fc5e-ecf405879df5@c-s.fr>
Date:   Tue, 7 Apr 2020 18:11:20 +0200
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Nathan Lynch <nathanl@...ux.ibm.com>
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 Nathan,

Le 16/01/2020 à 17:56, Nathan Lynch a écrit :
> 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?
> 

I have not seen any update on the vdsotest repository, have you been 
able to have a look at the patch ?

Thanks
Christophe