From: Carlos O'Donell <carlos@redhat.com>
To: Fangrui Song <maskray@google.com>, libc-alpha@sourceware.org
Cc: binutils@sourceware.org
Subject: Re: [PATCH v2] elf: Support DT_RELR relative relocation format [BZ #27924]
Date: Fri, 29 Oct 2021 14:21:33 -0400 [thread overview]
Message-ID: <1763c6f4-dfb9-e102-84d6-892ee2a3208a@redhat.com> (raw)
In-Reply-To: <20211017005020.2645717-1-maskray@google.com>
On 10/16/21 20:50, Fangrui Song via Binutils wrote:
> PIE and shared objects usually have many relative relocations. In
> 2017/2018, SHT_RELR/DT_RELR was proposed on
> https://groups.google.com/g/generic-abi/c/bX460iggiKg/m/GxjM0L-PBAAJ
> ("Proposal for a new section type SHT_RELR") and is a pre-standard. RELR
> usually takes 3% or smaller space than R_*_RELATIVE relocations. The
> virtual memory size of a mostly statically linked PIE is typically 5~10%
> smaller.
We've been going over this patch on the weekly Monday patch queue review.
I took a note to point out that one of the blockers here is that it is difficult
to immediately test this work because it requires a working glibc build using
ldd (which has support for DT_RELR).
What is the status of the lld support patches for glibc?
If we made progress on the lld support then we'd be able to more easily review
a testable configuration and keep the review going forward.
--
Cheers,
Carlos.
next prev parent reply other threads:[~2021-10-29 18:21 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-17 0:50 Fangrui Song
2021-10-18 14:42 ` H.J. Lu
2021-10-18 16:16 ` Fāng-ruì Sòng
2021-10-18 17:28 ` H.J. Lu
2021-10-18 18:15 ` Fāng-ruì Sòng
2021-10-18 18:27 ` H.J. Lu
2021-10-18 19:19 ` Fāng-ruì Sòng
2021-10-18 19:44 ` H.J. Lu
2021-10-18 20:11 ` Fāng-ruì Sòng
2021-10-18 21:10 ` Joseph Myers
2021-10-18 22:27 ` H.J. Lu
2021-10-18 22:30 ` Joseph Myers
2021-10-18 22:42 ` H.J. Lu
2021-10-18 23:00 ` Joseph Myers
2021-10-18 23:36 ` H.J. Lu
2021-10-18 23:44 ` Joseph Myers
2021-10-19 1:05 ` H.J. Lu
2021-10-18 19:21 ` Joseph Myers
2021-10-18 19:45 ` H.J. Lu
2021-10-29 18:21 ` Carlos O'Donell [this message]
2021-10-29 18:36 ` H.J. Lu
2021-10-29 19:15 ` Fangrui Song
2021-10-29 18:38 ` Fāng-ruì Sòng
2021-10-29 19:35 ` Carlos O'Donell
2021-10-29 19:53 ` Adhemerval Zanella
2021-11-01 4:50 ` Fāng-ruì Sòng
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