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Subject: Re: [RFC 0/2] __vdso_findsym
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Sun, 15 Jun 2014 14:13:26 -0700
To: Andy Lutomirski <luto@amacapital.net>
CC: Ian Lance Taylor <iant@golang.org>, Andi Kleen <andi@firstfloor.org>,
        Rich Felker <dalias@libc.org>,
        Mikael Pettersson <mikpelinux@gmail.com>, Russ Cox <rsc@golang.org>,
        Linux API <linux-api@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        X86 ML <x86@kernel.org>
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Yes, but the option exists.

On June 15, 2014 1:53:17 PM PDT, Andy Lutomirski <luto@amacapital.net> wrote:
>On Sun, Jun 15, 2014 at 12:56 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>> You can link against vdso.so if you want to; the kernel build
>provides an option to install that image.  Doesn't mean that any
>particular libc uses it.
>
>I'd be rather surprised if anyone does this, given the generally
>spotty state of vdso.so installation and that there's no such thing as
>an ELF import library.
>
>Also, the vdso's clock_gettime isn't actually compatible with
>glibc/POSIX -- the return value and errno handling don't match.
>
>--Andy

-- 
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