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From: Willy Tarreau <w@1wt.eu>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Zhangjin Wu" <falcon@tinylab.org>,
	"Thomas Weißschuh" <thomas@t-8ch.de>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-kselftest <linux-kselftest@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH v3 11/12] selftests/nolibc: add new gettimeofday test cases
Date: Sun, 4 Jun 2023 13:46:06 +0200	[thread overview]
Message-ID: <ZHx5fghesYtnpPoi@1wt.eu> (raw)
In-Reply-To: <54edae1f-0c1c-4beb-b6ac-fcd61fc81de8@app.fastmail.com>

On Sun, Jun 04, 2023 at 01:38:39PM +0200, Arnd Bergmann wrote:
> > Over time we managed
> > to make simple code compile with both glibc and nolibc, but when it
> > comes at the cost of adding size and burden for the developers, such
> > as forcing them to add libgcc, I prefer that we slightly limit the
> > domain of application instead.
> 
> Good point. This also reminds me that the compilers I build for
> https://mirrors.edge.kernel.org/pub/tools/crosstool/ don't always
> have every version of libgcc that may be needed, for instance
> the mips compilers only provide a big-endian libgcc and the
> arm compilers only provide a little-endian one, even though
> the compilers can build code both ways with the right flags.

That reminds me something indeed, I know that MIPS is a great platform
for testing portability due to libgcc and/or atomics not always being
complete depending how it's built. At work when I double-check that
haproxy still builds and starts on my EdgeRouter-X, then it will build
everywhere ;-)

Willy

WARNING: multiple messages have this Message-ID (diff)
From: Willy Tarreau <w@1wt.eu>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Zhangjin Wu" <falcon@tinylab.org>,
	"Thomas Weißschuh" <thomas@t-8ch.de>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-kselftest <linux-kselftest@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>
Subject: Re: [PATCH v3 11/12] selftests/nolibc: add new gettimeofday test cases
Date: Sun, 4 Jun 2023 13:46:06 +0200	[thread overview]
Message-ID: <ZHx5fghesYtnpPoi@1wt.eu> (raw)
In-Reply-To: <54edae1f-0c1c-4beb-b6ac-fcd61fc81de8@app.fastmail.com>

On Sun, Jun 04, 2023 at 01:38:39PM +0200, Arnd Bergmann wrote:
> > Over time we managed
> > to make simple code compile with both glibc and nolibc, but when it
> > comes at the cost of adding size and burden for the developers, such
> > as forcing them to add libgcc, I prefer that we slightly limit the
> > domain of application instead.
> 
> Good point. This also reminds me that the compilers I build for
> https://mirrors.edge.kernel.org/pub/tools/crosstool/ don't always
> have every version of libgcc that may be needed, for instance
> the mips compilers only provide a big-endian libgcc and the
> arm compilers only provide a little-endian one, even though
> the compilers can build code both ways with the right flags.

That reminds me something indeed, I know that MIPS is a great platform
for testing portability due to libgcc and/or atomics not always being
complete depending how it's built. At work when I double-check that
haproxy still builds and starts on my EdgeRouter-X, then it will build
everywhere ;-)

Willy

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http://lists.infradead.org/mailman/listinfo/linux-riscv

  reply	other threads:[~2023-06-04 11:46 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-03  7:59 [PATCH v3 00/12] nolibc: add generic part1 of prepare for rv32 Zhangjin Wu
2023-06-03  7:59 ` Zhangjin Wu
2023-06-03  8:00 ` [PATCH v3 01/12] selftests/nolibc: syscall_args: use generic __NR_statx Zhangjin Wu
2023-06-03  8:00   ` Zhangjin Wu
2023-06-03  8:02 ` [PATCH v3 02/12] tools/nolibc: add missing nanoseconds support for __NR_statx Zhangjin Wu
2023-06-03  8:02   ` Zhangjin Wu
2023-06-04 11:18   ` Willy Tarreau
2023-06-04 11:18     ` Willy Tarreau
2023-06-04 12:00     ` Thomas Weißschuh
2023-06-04 12:00       ` Thomas Weißschuh
2023-06-04 12:53       ` Willy Tarreau
2023-06-04 12:53         ` Willy Tarreau
2023-06-03  8:04 ` [PATCH v3 03/12] selftests/nolibc: allow specify extra arguments for qemu Zhangjin Wu
2023-06-03  8:04   ` Zhangjin Wu
2023-06-03  8:05 ` [PATCH v3 04/12] selftests/nolibc: fix up compile warning with glibc on x86_64 Zhangjin Wu
2023-06-03  8:05   ` Zhangjin Wu
2023-06-03  8:06 ` [PATCH v3 05/12] selftests/nolibc: not include limits.h for nolibc Zhangjin Wu
2023-06-03  8:06   ` Zhangjin Wu
2023-06-03  8:08 ` [PATCH v3 06/12] selftests/nolibc: use INT_MAX instead of __INT_MAX__ Zhangjin Wu
2023-06-03  8:08   ` Zhangjin Wu
2023-06-03  8:09 ` [PATCH v3 07/12] tools/nolibc: arm: add missing my_syscall6 Zhangjin Wu
2023-06-03  8:09   ` Zhangjin Wu
2023-06-03  8:11 ` [PATCH v3 08/12] tools/nolibc: open: fix up compile warning for arm Zhangjin Wu
2023-06-03  8:11   ` Zhangjin Wu
2023-06-03  8:13 ` [PATCH v3 09/12] selftests/nolibc: support two errnos with EXPECT_SYSER2() Zhangjin Wu
2023-06-03  8:13   ` Zhangjin Wu
2023-06-03  8:14 ` [PATCH v3 10/12] selftests/nolibc: remove gettimeofday_bad1/2 completely Zhangjin Wu
2023-06-03  8:14   ` Zhangjin Wu
2023-06-03  8:16 ` [PATCH v3 11/12] selftests/nolibc: add new gettimeofday test cases Zhangjin Wu
2023-06-03  8:16   ` Zhangjin Wu
2023-06-04  6:46   ` Thomas Weißschuh
2023-06-04  6:46     ` Thomas Weißschuh
     [not found]     ` <tencent_4668A50A08C3D31E7531619E@qq.com>
2023-06-04  9:24       ` Arnd Bergmann
2023-06-04  9:24         ` Arnd Bergmann
2023-06-04 11:27         ` Willy Tarreau
2023-06-04 11:27           ` Willy Tarreau
2023-06-04 11:38           ` Arnd Bergmann
2023-06-04 11:38             ` Arnd Bergmann
2023-06-04 11:46             ` Willy Tarreau [this message]
2023-06-04 11:46               ` Willy Tarreau
2023-06-05 11:12           ` Zhangjin Wu
2023-06-05 11:12             ` Zhangjin Wu
2023-06-03  8:17 ` [PATCH v3 12/12] selftests/nolibc: test_fork: fix up duplicated print Zhangjin Wu
2023-06-03  8:17   ` Zhangjin Wu
2023-06-04  6:49 ` [PATCH v3 00/12] nolibc: add generic part1 of prepare for rv32 Thomas Weißschuh
2023-06-04  6:49   ` Thomas Weißschuh
2023-06-04 12:54   ` Willy Tarreau
2023-06-04 12:54     ` Willy Tarreau

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