From: "Thomas Weißschuh" <linux@weissschuh.net>
To: Mark Brown <broonie@kernel.org>
Cc: Willy Tarreau <w@1wt.eu>, Christian Brauner <brauner@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 1/2] tools/nolibc: Provide vfork()
Date: Mon, 9 Jun 2025 17:34:33 +0200 [thread overview]
Message-ID: <df6f5620-5986-4080-bb00-c7bee856bf66@t-8ch.de> (raw)
In-Reply-To: <20250609-arm64-gcs-vfork-exit-v1-1-baad0f085747@kernel.org>
Small followup review, sorry for the noise.
On 2025-06-09 16:08:56+0100, Mark Brown wrote:
<snip>
> +#ifndef sys_vfork
This ifndef is not necessary here.
No architecture has a special version.
> +static __attribute__((unused))
> +pid_t sys_vfork(void)
> +{
> +#ifdef __NR_vfork
For consistency:
#if defined(__NR_vfork)
> + return my_syscall0(__NR_vfork);
> +#elif defined(__NR_clone3)
> + /*
> + * clone() could be used but has different argument orders per
> + * architecture.
> + */
> + struct clone_args args = {
> + .flags = CLONE_VM | CLONE_VFORK,
> + .exit_signal = SIGCHLD,
> + };
> +
> + return my_syscall2(__NR_clone3, &args, sizeof(args));
> +#else
> + return __nolibc_enosys(__func__);
> +#endif
> +}
> +#endif
next prev parent reply other threads:[~2025-06-09 16:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-09 15:08 [PATCH 0/2] kselftest/arm64: Add coverage for the interaction of vfork() and GCS Mark Brown
2025-06-09 15:08 ` [PATCH 1/2] tools/nolibc: Provide vfork() Mark Brown
2025-06-09 15:25 ` Thomas Weißschuh
2025-06-09 15:34 ` Thomas Weißschuh [this message]
2025-06-09 15:43 ` Mark Brown
2025-06-09 15:51 ` Thomas Weißschuh
2025-06-09 15:08 ` [PATCH 2/2] kselftest/arm64: Add a test for vfork() with GCS Mark Brown
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