From: Siddhesh Poyarekar <siddhesh@gotplt.org>
To: Fangrui Song <maskray@google.com>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH] csu: Skip ARCH_SETUP_IREL if _dl_relocate_static_pie applied IRELATIVE relocations [BZ #27164]
Date: Wed, 14 Jul 2021 07:45:00 +0530 [thread overview]
Message-ID: <d3d115cb-ac1c-dd1c-d7b2-35b0414a7201@gotplt.org> (raw)
In-Reply-To: <20210713230639.mkyiijn6v7tlo7fc@google.com>
On 7/14/21 4:36 AM, Fangrui Song wrote:
> Please see the sentence from the first message
> "In addition, this enables a future simplification to GNU ld: we can
> drop a linker script difference between -no-pie and -pie."
>
> This is the only difference other than image base difference.
I did see the first message and indeed, all messages in the thread
before asking that question. Perhaps my wording wasn't specific enough:
what is the benefit to *users* of having those symbols in dynamic
binaries? If the only reason what you mentioned in your first email,
then this patch proposes to add runtime overhead to make what is
essentially a cosmetic difference to GNU ld. That doesn't make sense.
In that context, lld behaviour needs to be changed since it adds symbols
specifically meant to enable ifunc resolution in non-pie static binaries
to all generated binaries without any known benefit to end user
applications.
Siddhesh
next prev parent reply other threads:[~2021-07-14 2:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-08 22:10 [PATCH] csu: Skip ARCH_SETUP_IREL if _dl_relocate_static_pie applied IRELATIVE relocations [BZ #27164] Fangrui Song via Libc-alpha
2021-07-08 23:27 ` H.J. Lu via Libc-alpha
2021-07-12 14:08 ` Carlos O'Donell via Libc-alpha
2021-07-13 8:06 ` Fangrui Song via Libc-alpha
2021-07-13 8:33 ` Siddhesh Poyarekar
2021-07-13 23:06 ` Fangrui Song via Libc-alpha
2021-07-13 23:20 ` H.J. Lu via Libc-alpha
2021-07-13 23:31 ` Fāng-ruì Sòng via Libc-alpha
2021-07-13 23:47 ` H.J. Lu via Libc-alpha
2021-07-13 23:57 ` Fāng-ruì Sòng via Libc-alpha
2021-07-14 1:17 ` H.J. Lu via Libc-alpha
2021-07-14 2:15 ` Siddhesh Poyarekar [this message]
2021-09-06 6:30 ` Fāng-ruì Sòng via Libc-alpha
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