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From: "Amanieu d'Antras" <amanieu@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Christian Brauner <christian.brauner@ubuntu.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Christian Brauner <christian@brauner.io>,
	"# 3.4.x" <stable@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 1/7] arm64: Move __ARCH_WANT_SYS_CLONE3 definition to uapi headers
Date: Thu, 2 Jan 2020 20:32:53 +0100	[thread overview]
Message-ID: <CA+y5pbTwsN6dUWQ+hAWpuo4c7418GV1RdpmKFiJW+cEu+ibGJw@mail.gmail.com> (raw)
In-Reply-To: <CAK8P3a3a88e=hkzYG5mj=NuVQWMtyougkKzBznnn2y9ZoZfEGg@mail.gmail.com>

On Thu, Jan 2, 2020 at 8:25 PM Arnd Bergmann <arnd@arndb.de> wrote:
> On Thu, Jan 2, 2020 at 6:50 PM Christian Brauner
> <christian.brauner@ubuntu.com> wrote:
> > On Thu, Jan 02, 2020 at 06:24:07PM +0100, Amanieu d'Antras wrote:
> > > Previously this was only defined in the internal headers which
> > > resulted in __NR_clone3 not being defined in the user headers.
> > >
> > > Signed-off-by: Amanieu d'Antras <amanieu@gmail.com>
> > > Cc: linux-arm-kernel@lists.infradead.org
> > > Cc: <stable@vger.kernel.org> # 5.3.x
> > > ---
> > >  arch/arm64/include/asm/unistd.h      | 1 -
> > >  arch/arm64/include/uapi/asm/unistd.h | 1 +
> > >  2 files changed, 1 insertion(+), 1 deletion(-)
>
> Good catch, this is clearly needed, but please make the patch change
> every copy of asm/unistd.h that defines this, not just the arm64 one.

Actually __ARCH_WANT_SYS_CLONE3 only needs to be in the uapi headers
for architectures that use the asm-generic/unistd.h header, which uses
it to guard the definition of __NR_clone3. Architectures not using the
asm-generic header don't need this define to export __NR_clone3. The
only other architecture with clone3 that uses the asm-generic header
is riscv, which already defines __ARCH_WANT_SYS_CLONE3 in the uapi
headers.

  reply	other threads:[~2020-01-02 19:33 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-02 17:24 [PATCH 0/7] Fix CLONE_SETTLS with clone3 Amanieu d'Antras
2020-01-02 17:24 ` [PATCH 1/7] arm64: Move __ARCH_WANT_SYS_CLONE3 definition to uapi headers Amanieu d'Antras
2020-01-02 17:50   ` Christian Brauner
2020-01-02 19:25     ` Arnd Bergmann
2020-01-02 19:32       ` Amanieu d'Antras [this message]
2020-01-02 19:59         ` Arnd Bergmann
2020-01-02 17:24 ` [PATCH 2/7] arm64: Implement copy_thread_tls Amanieu d'Antras
2020-01-02 18:01   ` Christian Brauner
2020-01-06 17:39     ` Will Deacon
2020-01-06 18:03       ` Amanieu d'Antras
2020-01-07  9:02         ` Christian Brauner
2020-01-07 17:45           ` Will Deacon
2020-01-07 18:12             ` Kees Cook
2020-01-07 19:30               ` Christian Brauner
2020-01-07 19:30             ` Christian Brauner
2020-01-02 17:24 ` [PATCH 3/7] arm: " Amanieu d'Antras
2020-01-02 18:02   ` Christian Brauner
2020-01-02 17:24 ` [PATCH 4/7] parisc: " Amanieu d'Antras
2020-01-02 17:24 ` [PATCH 5/7] riscv: " Amanieu d'Antras
2020-01-02 17:24 ` [PATCH 6/7] xtensa: " Amanieu d'Antras
2020-01-02 17:24 ` [PATCH 7/7] clone3: ensure copy_thread_tls is implemented Amanieu d'Antras
2020-01-02 18:09   ` Christian Brauner
2020-01-02 18:19     ` Amanieu d'Antras
2020-01-02 18:24       ` Christian Brauner
2020-01-02 18:11 ` [PATCH 0/7] Fix CLONE_SETTLS with clone3 Christian Brauner
2020-01-04 12:39 ` [PATCH] um: Implement copy_thread_tls Amanieu d'Antras
2020-01-05 15:19   ` Christian Brauner
2020-01-07 12:35     ` Christian Brauner
2020-01-17  0:12       ` Richard Weinberger
2020-01-17  0:14         ` Christian Brauner
2020-01-07 12:34 ` [PATCH 0/7] Fix CLONE_SETTLS with clone3 Christian Brauner

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