From: Florian Weimer <fweimer@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Lutomirski <luto@kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
linux-api@vger.kernel.org, Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
bp@alien8.de, vapier@gentoo.org, hjl.tools@gmail.com,
dalias@libc.org, x32@buildd.debian.org,
Arnd Bergmann <arnd@arndb.de>, Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: Can we drop upstream Linux x32 support?
Date: Tue, 11 Dec 2018 09:16:05 +0100 [thread overview]
Message-ID: <871s6o32d6.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <CAHk-=wi_Kp=3XmGDdzmadzFSPFvuL+aAJ6ZPAR=o4z=KwYT2vw@mail.gmail.com> (Linus Torvalds's message of "Mon, 10 Dec 2018 17:40:33 -0800")
* Linus Torvalds:
> Apparently the main real use case is for extreme benchmarking. It's
> the only use-case where the complexity of maintaining a whole
> development environment and distro is worth it, it seems. Apparently a
> number of Spec submissions have been done with the x32 model.
Are you sure GCC was used for that?
ICC has a 32-bit pointer mode which does not change the (64-bit) kernel
interface.
Thanks,
Florian
WARNING: multiple messages have this Message-ID (diff)
From: Florian Weimer <fweimer@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Lutomirski <luto@kernel.org>,
"the arch\/x86 maintainers" <x86@kernel.org>,
Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
linux-api@vger.kernel.org, Peter Anvin <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
bp@alien8.de, vapier@gentoo.org, hjl.tools@gmail.com,
dalias@libc.org, x32@buildd.debian.org,
Arnd Bergmann <arnd@arndb.de>, Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: Can we drop upstream Linux x32 support?
Date: Tue, 11 Dec 2018 09:16:05 +0100 [thread overview]
Message-ID: <871s6o32d6.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <CAHk-=wi_Kp=3XmGDdzmadzFSPFvuL+aAJ6ZPAR=o4z=KwYT2vw@mail.gmail.com> (Linus Torvalds's message of "Mon, 10 Dec 2018 17:40:33 -0800")
* Linus Torvalds:
> Apparently the main real use case is for extreme benchmarking. It's
> the only use-case where the complexity of maintaining a whole
> development environment and distro is worth it, it seems. Apparently a
> number of Spec submissions have been done with the x32 model.
Are you sure GCC was used for that?
ICC has a 32-bit pointer mode which does not change the (64-bit) kernel
interface.
Thanks,
Florian
next prev parent reply other threads:[~2018-12-11 8:16 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 1:23 Can we drop upstream Linux x32 support? Andy Lutomirski
2018-12-11 1:40 ` Linus Torvalds
2018-12-11 2:22 ` hpa
2018-12-11 8:16 ` Florian Weimer [this message]
2018-12-11 8:16 ` Florian Weimer
2018-12-11 21:53 ` Thorsten Glaser
2018-12-11 23:22 ` Andy Lutomirski
2018-12-11 23:35 ` Thorsten Glaser
2018-12-11 23:55 ` Arnd Bergmann
2018-12-12 2:24 ` Andy Lutomirski
2018-12-12 2:33 ` Thorsten Glaser
2018-12-12 9:04 ` Arnd Bergmann
2018-12-12 18:14 ` Joseph Myers
2018-12-12 18:14 ` Joseph Myers
2018-12-12 18:50 ` Ivan Ivanov
2018-12-12 19:12 ` Andy Lutomirski
2018-12-12 19:18 ` Ivan Ivanov
2018-12-12 16:39 ` Andy Lutomirski
2018-12-12 16:52 ` Rich Felker
2018-12-12 18:03 ` Andy Lutomirski
2018-12-13 12:40 ` Catalin Marinas
2018-12-13 15:57 ` Rich Felker
2018-12-13 16:04 ` Florian Weimer
2018-12-13 16:28 ` Rich Felker
2018-12-14 11:42 ` Florian Weimer
2018-12-14 16:13 ` Rich Felker
2018-12-13 18:42 ` Joseph Myers
2018-12-13 18:42 ` Joseph Myers
2018-12-15 4:53 ` Thorsten Glaser
2018-12-11 23:38 ` Rich Felker
2018-12-11 23:40 ` Maciej W. Rozycki
2018-12-13 14:38 ` Olof Johansson
2018-12-13 15:46 ` Lance Richardson
2018-12-13 16:11 ` Richard Purdie
2018-12-11 3:14 ` H.J. Lu
2018-12-11 5:35 ` Andy Lutomirski
2018-12-11 9:02 ` Arnd Bergmann
2018-12-11 11:32 ` Catalin Marinas
2018-12-11 11:37 ` Florian Weimer
2018-12-11 11:52 ` Catalin Marinas
2018-12-11 5:46 ` Christian Brauner
2018-12-11 10:29 ` John Paul Adrian Glaubitz
2018-12-11 10:37 ` Florian Weimer
2018-12-11 10:44 ` John Paul Adrian Glaubitz
2018-12-11 21:59 ` Thorsten Glaser
2018-12-11 23:33 ` Rich Felker
2018-12-13 5:03 ` Kevin Easton
2018-12-13 9:05 ` Richard Weinberger
2018-12-13 9:37 ` Sven Hartrumpf
2018-12-13 9:57 ` Adam Borowski
2018-12-13 18:50 ` Sven Hartrumpf
2018-12-13 12:12 ` Kevin Easton
2018-12-14 14:38 ` David Laight
2018-12-14 15:17 ` Richard Weinberger
2018-12-14 15:17 ` Richard Weinberger
2018-12-13 16:02 ` Rich Felker
2018-12-14 14:13 ` Bernd Petrovitsch
2018-12-14 16:17 ` Rich Felker
2018-12-14 16:29 ` Bernd Petrovitsch
2018-12-14 16:38 ` Florian Weimer
2018-12-14 16:55 ` Rich Felker
2018-12-14 18:58 ` Andy Lutomirski
2018-12-14 19:59 ` Lance Richardson
2018-12-14 20:13 ` Linus Torvalds
2018-12-14 21:27 ` Andy Lutomirski
2018-12-14 21:16 ` Thomas Schöbel-Theuer
2018-12-14 21:24 ` Andy Lutomirski
2018-12-14 21:41 ` Thomas Schöbel-Theuer
2018-12-15 7:41 ` Thomas Schoebel-Theuer
2018-12-15 15:30 ` Andy Lutomirski
2019-01-09 12:41 ` Florian Weimer
2019-01-09 16:02 ` Rich Felker
2019-01-22 13:34 ` Enrico Weigelt, metux IT consult
-- strict thread matches above, loose matches on Subject: below --
2018-12-11 20:38 Shawn Rutledge
2018-12-12 0:00 ` Maciej W. Rozycki
2018-12-12 9:12 Steven Newbury
2018-12-12 10:48 ` Thorsten Glaser
2018-12-12 13:27 ` Steven Newbury
2018-12-12 14:01 ` Rich Felker
2018-12-12 14:46 ` Steven Newbury
2018-12-12 16:05 ` Rich Felker
2018-12-13 16:17 tedheadster
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