From: Szabolcs Nagy <szabolcs.nagy@arm.com>
To: Yury Norov <ynorov@caviumnetworks.com>, <arnd@arndb.de>,
<catalin.marinas@arm.com>, <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-arch@vger.kernel.org>, <linux-s390@vger.kernel.org>,
<libc-alpha@sourceware.org>
Cc: <nd@arm.com>, <schwidefsky@de.ibm.com>,
<heiko.carstens@de.ibm.com>, <pinskia@gmail.com>,
<broonie@kernel.org>, <joseph@codesourcery.com>,
<christoph.muellner@theobroma-systems.com>,
<bamvor.zhangjian@huawei.com>, <klimov.linux@gmail.com>,
<Nathan_Lynch@mentor.com>, <agraf@suse.de>,
<Prasun.Kapoor@caviumnetworks.com>, <kilobyte@angband.pl>,
<geert@linux-m68k.org>, <philipp.tomsich@theobroma-systems.com>
Subject: Re: [PATCH v6 00/21] ILP32 for ARM64
Date: Fri, 3 Jun 2016 12:02:50 +0100 [thread overview]
Message-ID: <575163DA.3060502@arm.com> (raw)
In-Reply-To: <20160602190344.GA24533@yury-N73SV>
On 02/06/16 20:03, Yury Norov wrote:
> On Tue, May 24, 2016 at 03:04:29AM +0300, Yury Norov wrote:
>> ILP32 glibc branch is available here:
>> https://github.com/norov/glibc/tree/ilp32-2.23
>>
>
> So for AARCH64/ILP32 we turn next types to 64-bit in glibc:
> #define __INO_T_TYPE __UQUAD_TYPE
> #define __OFF_T_TYPE __SQUAD_TYPE
> #define __BLKCNT_T_TYPE __SQUAD_TYPE
> #define __FSBLKCNT_T_TYPE __UQUAD_TYPE
> #define __FSFILCNT_T_TYPE __UQUAD_TYPE
>
> And define:
> # define __INO_T_MATCHES_INO64_T 1
> # define __OFF_T_MATCHES_OFF64_T 1
> # define __BLKCNT_T_MATCHES_BLKCNT64_T 1
> # define __FSBLKCNT_T_MATCHES_FSBLKCNT64_T 1
> # define __FSFILCNT_T_MATCHES_FSFILCNT_T 1
>
> If so, stat and statfs structures for ilp32 are turning the same as
> for lp64. And so we'd handle related syscalls with native lp64
> handlers (wrapped, to zero top halves) in kernel.
>
> And we don't need stat64 for ilp32.
>
> Did I miss something? Is everything correct?
>
> OFF_T is turned to 64-bit quite smoothly, others make applications
> crash with segfault. Now I'm in deep debugging.
>
based on previous discussions, non-trivial glibc changes may
be needed to make 64bit fs apis the default on a 32bit abi.
http://sourceware.org/ml/libc-alpha/2016-05/msg00337.html
http://sourceware.org/ml/libc-alpha/2016-05/msg00356.html
but i guess if you consistently fix the 32bit assumptions
then it should work.
> https://github.com/norov/glibc/commits/ilp32-dev
> https://github.com/norov/linux/commits/ilp32
>
> Yury.
>
prev parent reply other threads:[~2016-06-03 11:03 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-24 0:04 [PATCH v6 00/21] ILP32 for ARM64 Yury Norov
2016-05-24 0:04 ` [PATCH 01/23] all: syscall wrappers: add documentation Yury Norov
2016-05-25 19:30 ` David Miller
2016-05-25 20:03 ` Yury Norov
2016-05-25 20:21 ` David Miller
2016-05-25 20:47 ` Arnd Bergmann
2016-05-25 20:50 ` David Miller
2016-05-25 21:01 ` Arnd Bergmann
2016-05-25 21:28 ` David Miller
2016-05-26 14:20 ` Catalin Marinas
2016-05-26 14:50 ` Szabolcs Nagy
2016-05-26 15:19 ` Catalin Marinas
2016-05-26 19:43 ` David Miller
2016-05-27 10:10 ` Catalin Marinas
2016-05-26 20:48 ` Yury Norov
2016-05-26 22:29 ` Catalin Marinas
2016-05-27 0:37 ` Yury Norov
2016-05-27 6:03 ` Heiko Carstens
2016-05-27 8:42 ` Arnd Bergmann
2016-05-27 9:30 ` Catalin Marinas
2016-05-27 10:49 ` Arnd Bergmann
2016-05-27 13:04 ` Catalin Marinas
2016-05-27 16:58 ` Yury Norov
2016-05-27 17:36 ` Catalin Marinas
2016-05-27 9:01 ` Catalin Marinas
2016-06-14 23:08 ` Yury Norov
2016-05-27 5:52 ` Heiko Carstens
2016-05-24 0:04 ` [PATCH 02/23] all: introduce COMPAT_WRAPPER option and enable it for s390 Yury Norov
2016-05-24 0:04 ` [PATCH 03/23] all: s390: move wrapper infrastructure to generic headers Yury Norov
2016-05-24 0:04 ` [PATCH 04/23] all: s390: move compat_wrappers.c from arch/s390/kernel to kernel/ Yury Norov
2016-05-24 0:04 ` [PATCH 05/23] all: wrap needed syscalls in generic unistd Yury Norov
2016-05-24 0:04 ` [PATCH 06/23] compat ABI: use non-compat openat and open_by_handle_at variants Yury Norov
2016-05-24 0:04 ` [PATCH 07/23] 32-bit ABI: introduce ARCH_32BIT_OFF_T config option Yury Norov
2016-05-24 0:04 ` [PATCH 08/23] arm64: ilp32: add documentation on the ILP32 ABI for ARM64 Yury Norov
2016-05-24 0:04 ` [PATCH 09/23] arm64: ensure the kernel is compiled for LP64 Yury Norov
2016-05-24 0:04 ` [PATCH 10/23] arm64: rename COMPAT to AARCH32_EL0 in Kconfig Yury Norov
2016-05-24 0:04 ` [PATCH 11/23] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 Yury Norov
2016-05-24 0:04 ` [PATCH 12/23] thread: move thread bits accessors to separated file Yury Norov
2016-05-24 0:04 ` [PATCH 13/23] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov
2016-06-12 12:21 ` Zhangjian (Bamvor)
2016-06-12 13:08 ` Zhangjian (Bamvor)
2016-06-12 17:56 ` Yury Norov
2016-05-24 0:04 ` [PATCH 14/23] arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov
2016-05-24 0:04 ` [PATCH 15/23] arm64: introduce binfmt_elf32.c Yury Norov
2016-05-24 0:04 ` [PATCH 16/23] arm64: ilp32: introduce binfmt_ilp32.c Yury Norov
2016-05-26 13:49 ` Zhangjian (Bamvor)
2016-05-26 21:08 ` Yury Norov
2016-06-15 0:40 ` Yury Norov
2016-06-13 3:05 ` Zhangjian (Bamvor)
2016-06-13 13:22 ` Zhangjian (Bamvor)
2016-05-24 0:04 ` [PATCH 17/23] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Yury Norov
2016-06-08 1:34 ` zhouchengming
2016-06-08 17:00 ` Yury Norov
2016-06-25 9:36 ` zhouchengming
2016-06-25 14:15 ` Bamvor Zhang
2016-06-27 2:09 ` zhouchengming
2016-05-24 0:04 ` [PATCH 18/23] arm64: ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov
2016-05-25 20:26 ` Arnd Bergmann
2016-05-24 0:04 ` [PATCH 19/23] arm64: signal: share lp64 signal routines to ilp32 Yury Norov
2016-05-24 0:04 ` [PATCH 20/23] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov
2016-05-24 0:04 ` [PATCH 21/23] arm64: ilp32: introduce ilp32-specific handlers for sigframe and ucontext Yury Norov
2016-06-04 11:34 ` Zhangjian (Bamvor)
2016-06-12 12:34 ` Zhangjian (Bamvor)
2016-06-12 13:12 ` Zhangjian (Bamvor)
2016-06-12 17:44 ` Yury Norov
2016-06-16 11:21 ` Zhangjian (Bamvor)
2016-06-12 12:39 ` Zhangjian (Bamvor)
2016-05-24 0:04 ` [PATCH 22/23] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov
2016-05-24 0:04 ` [PATCH 23/23] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov
2016-05-25 10:42 ` [PATCH v6 00/21] ILP32 for ARM64 Szabolcs Nagy
2016-05-25 16:41 ` Yury Norov
2016-06-02 19:03 ` Yury Norov
2016-06-03 11:02 ` Szabolcs Nagy [this message]
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