From: Christian Brauner <christian@brauner.io>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
Jann Horn <jannh@google.com>, Florian Weimer <fweimer@redhat.com>,
Oleg Nesterov <oleg@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
David Howells <dhowells@redhat.com>,
Pavel Emelyanov <xemul@virtuozzo.com>,
Andrew Morton <akpm@linux-foundation.org>,
Adrian Reber <adrian@lisas.de>, Andrei Vagin <avagin@gmail.com>,
Linux API <linux-api@vger.kernel.org>
Subject: Re: [PATCH 1/2] fork: add clone6
Date: Tue, 28 May 2019 12:08:04 +0200 [thread overview]
Message-ID: <20190528100802.sdfqtwrowrmulpml@brauner.io> (raw)
In-Reply-To: <CAHk-=wjnbK5ob9JE0H1Ge_R4BL6D0ztsAvrM6DN+S+zyDWE=7A@mail.gmail.com>
On Mon, May 27, 2019 at 12:27:08PM -0700, Linus Torvalds wrote:
> On Mon, May 27, 2019 at 3:42 AM Christian Brauner <christian@brauner.io> wrote:
> >
> > Hm, still pondering whether having one unsigned int argument passed
> > through registers that captures all the flags from the old clone() would
> > be a good idea.
>
> That sounds like a reasonable thing to do.
>
> Maybe we could continue to call the old flags CLONE_XYZ and continue
> to pass them in as "flags" argument, and then we have CLONE_EXT_XYZ
> flags for a new 64-bit flag field that comes in through memory in the
> new clone_args thing?
Hm. I think I'll try a first version without an additional register
flags argument. And here's why: I'm not sure it buys us a lot especially
if we're giving up on making this convenient for seccomp anyway.
And with that out of the way (at least for the moment) I would really
like to make this interface consistent. But we can revisit this when I
have the code.
Christian
next prev parent reply other threads:[~2019-05-28 10:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-26 10:26 [PATCH 1/2] fork: add clone6 Christian Brauner
2019-05-26 10:26 ` [PATCH 2/2] arch: wire-up clone6() syscall on x86 Christian Brauner
2019-05-27 10:02 ` Arnd Bergmann
2019-05-27 10:45 ` Christian Brauner
2019-05-27 12:28 ` Arnd Bergmann
2019-05-27 12:34 ` Christian Brauner
2019-05-27 18:48 ` Linus Torvalds
2019-05-26 16:50 ` [PATCH 1/2] fork: add clone6 Linus Torvalds
2019-05-27 10:42 ` Christian Brauner
2019-05-27 19:27 ` Linus Torvalds
2019-05-27 19:36 ` Jann Horn
2019-05-30 18:26 ` Kees Cook
2019-05-28 10:08 ` Christian Brauner [this message]
2019-05-28 14:15 ` Andy Lutomirski
2019-05-28 15:23 ` Eric W. Biederman
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