From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Yury Norov <ynorov@caviumnetworks.com>,
arnd@arndb.de, yury.norov@gmail.com,
linux-kernel@vger.kernel.org, agraf@suse.de,
klimov.linux@gmail.com, bamvor.zhangjian@huawei.com,
apinski@cavium.com, philipp.tomsich@theobroma-systems.com,
linux-arm-kernel@lists.infradead.org,
christoph.muellner@theobroma-systems.com
Subject: Re: [PATCH v5 00/23] ILP32 for ARM64
Date: Wed, 30 Sep 2015 17:41:03 +0100 [thread overview]
Message-ID: <20150930164103.GC15635@sirena.org.uk> (raw)
In-Reply-To: <20150930101918.GA9753@e104818-lin.cambridge.arm.com>
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On Wed, Sep 30, 2015 at 11:19:19AM +0100, Catalin Marinas wrote:
> On Wed, Sep 30, 2015 at 01:13:57AM +0300, Yury Norov wrote:
> > - What for ILP32 on ARM64?
> > See https://lkml.org/lkml/2015/4/13/814
> > and http://permalink.gmane.org/gmane.comp.lib.uclibc.buildroot/121100
> > Briefly,
> > - for compatibility;
> > - for performance;
> > - for memory saving.
> Does anyone actually need this ABI? And by "need" I don't mean a
> tick-box on product fliers but actually someone going to use it on real
> systems in the field. Because I'm not keen on maintaining an ABI in the
> kernel just as a PR exercise. I have yet to see conclusive benchmarks
> that ILP32 is a real win vs LP64 but happy to be proven wrong.
Indeed. On that subject there was some discussion at Linaro Connect
last week about work (being done outside Linaro, not sure how public it
is at this point) to pull together the current state of the art into a
Docker container image which people can use for benchmarking and as a
reference for how to pull things together. That should help with the
analysis, it'll at least make it easier for other people to reproduce
any benchmarking results.
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next prev parent reply other threads:[~2015-09-30 16:41 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-29 22:13 [PATCH v5 00/23] ILP32 for ARM64 Yury Norov
2015-09-29 22:13 ` [PATCH v5 01/23] arm64:ilp32: add documentation on the ILP32 ABI " Yury Norov
2015-09-29 22:13 ` [PATCH v5 02/23] arm64: ensure the kernel is compiled for LP64 Yury Norov
2015-09-29 22:14 ` [PATCH v5 03/23] arm64: rename COMPAT to AARCH32_EL0 in Kconfig Yury Norov
2015-10-06 9:21 ` Andrey Konovalov
2015-09-29 22:14 ` [PATCH v5 04/23] arm64: change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0 instead Yury Norov
2015-09-30 3:36 ` kbuild test robot
2015-09-30 5:35 ` kbuild test robot
2015-10-06 9:21 ` Andrey Konovalov
2015-09-29 22:14 ` [PATCH v5 05/23] arm64:ilp32: expose 'kernel_long' as 'long long' for ILP32 Yury Norov
2015-09-29 22:14 ` [PATCH v5 06/23] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 Yury Norov
2015-09-29 22:14 ` [PATCH v5 07/23] arm64:ilp32: share signal structures between ILP32 and LP64 ABIs Yury Norov
2015-09-29 22:14 ` [PATCH v5 08/23] arm64:ilp32: use 64bit syscall-names for ILP32 when passing 64bit registers Yury Norov
2015-09-29 22:14 ` [PATCH v5 09/23] arm64:ilp32: use non-compat syscall names for ILP32 as for LP64 Yury Norov
2015-09-29 22:14 ` [PATCH v5 10/23] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov
2015-09-30 3:48 ` kbuild test robot
2015-10-06 9:21 ` Andrey Konovalov
2015-10-07 16:13 ` Yury Norov
2015-09-29 22:14 ` [PATCH v5 11/23] arm64:ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov
2015-09-29 22:14 ` [PATCH v5 12/23] arm64:ilp32: COMPAT_USE_64BIT_TIME is true for ILP32 tasks Yury Norov
2015-09-29 22:14 ` [PATCH v5 13/23] arm64:ilp32: share HWCAP between LP64 and ILP32 Yury Norov
2015-09-29 22:14 ` [PATCH v5 14/23] arm64:ilp32 use the native LP64 'start_thread' for ILP32 threads Yury Norov
2015-09-29 22:14 ` [PATCH v5 15/23] arm64:ilp32: support core dump generation for ILP32 Yury Norov
2015-09-29 22:14 ` [PATCH v5 16/23] arm64: add support for starting ILP32 (ELFCLASS32) binaries Yury Norov
2015-09-29 22:14 ` [PATCH v5 17/23] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov
2015-09-30 4:06 ` Nathan Lynch
2015-10-01 19:44 ` Yury Norov
2015-10-01 19:54 ` Dr. Philipp Tomsich
2015-09-29 22:14 ` [PATCH v5 18/23] ptrace: Allow compat to use the native siginfo Yury Norov
2015-09-29 22:14 ` [PATCH v5 19/23] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov
2015-09-29 22:14 ` [PATCH v5 20/23] arm64:ilp32: use the native siginfo instead of the compat siginfo Yury Norov
2015-09-29 22:14 ` [PATCH v5 21/23] arm64:ilp32: change COMPAT_ELF_PLATFORM to report a a subplatform for ILP32 Yury Norov
2015-09-29 22:14 ` [PATCH v5 22/23] aarch64: ilp32: msgrcv, msgsnd handlers Yury Norov
2015-09-29 22:14 ` [PATCH v5 23/23] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov
2015-09-30 10:19 ` [PATCH v5 00/23] ILP32 for ARM64 Catalin Marinas
2015-09-30 16:41 ` Mark Brown [this message]
2015-10-01 11:19 ` Catalin Marinas
2015-10-01 11:36 ` Mark Brown
2015-10-01 16:42 ` Andrey Konovalov
2015-10-01 19:33 ` Yury Norov
2015-10-01 19:15 ` Yury Norov
2015-10-01 21:28 ` Arnd Bergmann
2015-10-01 21:49 ` Pinski, Andrew
2015-10-02 9:37 ` Catalin Marinas
2015-10-03 2:18 ` Kapoor, Prasun
2015-10-05 15:58 ` Catalin Marinas
2015-10-05 21:00 ` Pinski, Andrew
2015-10-05 19:10 ` Yury Norov
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