From: Michael Matz <matz@suse.de>
To: Florian Weimer <fweimer@redhat.com>
Cc: x86-64-abi@googlegroups.com, Binutils <binutils@sourceware.org>,
"H.J. Lu" <hjl.tools@gmail.com>,
GNU C Library <libc-alpha@sourceware.org>,
Mark Wielaard <mark@klomp.org>,
Cary Coutant <ccoutant@gmail.com>,
Nick Clifton <nickc@redhat.com>,
Carlos O'Donell <carlos@redhat.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>
Subject: Re: PT_NOTE alignment, NT_GNU_PROPERTY_TYPE_0, glibc and gold
Date: Fri, 21 Sep 2018 12:55:16 +0000 (UTC) [thread overview]
Message-ID: <alpine.LSU.2.21.1809211232400.7867@wotan.suse.de> (raw)
In-Reply-To: <87sh2547ib.fsf@oldenburg.str.redhat.com>
Hi,
(didn't take part in the side meeting, so sorry if this was discussed)
On Wed, 19 Sep 2018, Florian Weimer wrote:
> Distributions have built binaries with 8-byte-aligned GNU property
> notes.
Which ones? I know that we (SUSE) avoided CET-marked binaries for the
reason we are in the current predicament. I.e. is that _really_ a problem
at all (or a large one)?
Thing is, there are also binaries (or there could be) that are currently
"valid" that the align-8 approach makes invalid, so why say that's a
problem for the align-4 approach, but not for the align-8 one?
> (1) makes existing binaries invalid, and there was general agreement
> that this is a bad idea. It also fails to support notes with relocation
> on ELFCLASS64 strict-alignment targets.
Ciao,
Michael.
next prev parent reply other threads:[~2018-09-21 12:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAMe9rOrrayKnc_cPm4SmnDnUGLbBUmOYMBTMOM8KLAHVmb=rUQ@mail.gmail.com>
2018-08-16 13:00 ` PT_NOTE alignment, NT_GNU_PROPERTY_TYPE_0, glibc and gold (was: Re: [PATCH] Document GNU_PROPERTY_X86_ISA_1_[USED|NEEDED]) Florian Weimer
2018-08-16 13:19 ` H.J. Lu
2018-08-16 13:29 ` H.J. Lu
2018-08-16 13:31 ` PT_NOTE alignment, NT_GNU_PROPERTY_TYPE_0, glibc and gold Florian Weimer
2018-08-16 13:39 ` H.J. Lu
2018-08-16 14:01 ` Florian Weimer
2018-08-16 14:43 ` H.J. Lu
2018-08-16 14:21 ` Florian Weimer
2018-08-16 17:46 ` H.J. Lu
2018-08-16 19:16 ` Mark Wielaard
2018-08-16 19:36 ` H.J. Lu
2018-08-17 6:04 ` Mark Wielaard
2018-08-17 6:20 ` Florian Weimer
2018-08-17 6:41 ` Mark Wielaard
2018-08-17 15:10 ` H.J. Lu
2018-08-17 21:05 ` Mark Wielaard
2018-08-21 23:02 ` Cary Coutant
2018-08-22 9:39 ` Florian Weimer
2018-08-22 10:08 ` Mark Wielaard
2018-08-22 23:36 ` Cary Coutant
2018-08-24 18:39 ` Florian Weimer
2018-08-23 14:41 ` Michael Matz
2018-08-23 14:43 ` Florian Weimer
2018-08-17 15:13 ` H.J. Lu
2018-09-19 19:22 ` Florian Weimer
2018-09-21 12:55 ` Michael Matz [this message]
2018-09-21 13:04 ` Florian Weimer
2018-09-26 17:39 ` Cary Coutant
2018-09-26 18:36 ` H.J. Lu
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