linux-kernel - Re: [PATCH] perf tools: don't adjust symbols in vDSO

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Message-ID: <CALCETrXfq4eWpeZEc9jbZE-Lj5AyQLMjebS5amkF+iOxFW2XRQ@mail.gmail.com>
Date:	Fri, 26 Jun 2015 08:18:59 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Will Deacon <will.deacon@....com>
Cc:	Adrian Hunter <adrian.hunter@...el.com>,
	"acme@...hat.com" <acme@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kristina Martsenko <Kristina.Martsenko@....com>,
	Vladimir Nikulichev <nvs@...icks.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH] perf tools: don't adjust symbols in vDSO

On Fri, Jun 26, 2015 at 7:58 AM, Will Deacon <will.deacon@....com> wrote:
> (CC'ing Andy, since the removal of VDSO_PRELINK is user-visible here)

What arch is this?  I removed VDSO_PRELINK entirely from x86 a while
back, and now x86's vdso has a base address of 0 before relocations,
and everything works just fine.

(Except one ancient glibc, which fails if the vdso is relocated at
all.  We no longer support that version of glibc unless you turn off
the vdso entirely.)

--Andy
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