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Date: Fri, 7 Aug 2015 11:10:34 -0500
From: Nathan Lynch <Nathan_Lynch@...tor.com>
To: Andy Lutomirski <luto@...capital.net>
CC: Andy Lutomirski <luto@...nel.org>, Anton Blanchard <anton@...ba.org>,
Martin Schwidefsky <schwidefsky@...ibm.com>, Chris Metcalf
<cmetcalf@...era.com>, Richard Kuo <rkuo@...eaurora.org>, X86 ML
<x86@...nel.org>, "linux-kernel@...r.kernel.org"
<linux-kernel@...r.kernel.org>, Isaac Dunham <ibid.ag@...il.com>, Rich Felker
<dalias@...c.org>, "musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: Re: [PATCH] x86/vdso: Emit a GNU hash
On 08/06/2015 05:52 PM, Andy Lutomirski wrote:
> [adding lots of cc's]
>
> On Thu, Aug 6, 2015 at 2:45 PM, Andy Lutomirski <luto@...nel.org> wrote:
>> From: Andy Lutomirski <luto@...capital.net>
>>
>> Some dynamic loaders may be slightly faster if a GNU hash is
>> available. Strangely, this seems to have no effect at all on the
>> vdso size.
FWIW, I see arch/x86/entry/vdso/vdso64.so increase by 168 bytes here,
using GCC 4.9.2, Binutils 2.24 as packaged by Fedora 21.
I see a similar increase when I make the equivalent change for ARM.
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