linux-kernel - x86_64: vsyscall vs vdso

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Message-ID: <38b2ab8a0709161324p6841c1f9h6f9422b0e6c4b5cd@mail.gmail.com>
Date:	Sun, 16 Sep 2007 22:24:04 +0200
From:	"Francis Moreau" <francis.moro@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: x86_64: vsyscall vs vdso

Hello,

I'm a bit puzzled because vdso doesn't seem to be used on my fedora 7:
I just compiled a trivial program which just call gettimeofday() and
ld.so resolves this call with vsyscall's gettimeofday.

Now I'm wondering when vdso is used, could anybody give me a clue ?

Another question: is vdso going to replace vsyscall at all ? If so how
are statically programs going to be handled ?

Thanks,
-- 
Francis
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