Re: [PATCH 1/2] arch: mark syscall number 435 reserved for clone3

From: Sven Schnelle <svens@stackframe.org>
To: Christian Brauner <christian@brauner.io>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>,
	linux-kernel@vger.kernel.org, arnd@arndb.de,
	linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
	linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
	linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
	Vasily Gorbik <gor@linux.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	mpe@ellerman.id.au
Subject: Re: [PATCH 1/2] arch: mark syscall number 435 reserved for clone3
Date: Tue, 16 Jul 2019 20:53:10 +0200	[thread overview]
Message-ID: <20190716185310.GA12537@t470p.stackframe.org> (raw)
In-Reply-To: <20190716130631.tohj4ub54md25dys@brauner.io>

Hi,

[Adding Helge to CC list]

On Tue, Jul 16, 2019 at 03:06:33PM +0200, Christian Brauner wrote:
> On Mon, Jul 15, 2019 at 03:56:04PM +0200, Christian Borntraeger wrote:
> > I think Vasily already has a clone3 patch for s390x with 435. 
> 
> A quick follow-up on this. Helge and Michael have asked whether there
> are any tests for clone3. Yes, there will be and I try to have them
> ready by the end of the this or next week for review. In the meantime I
> hope the following minimalistic test program that just verifies very
> very basic functionality (It's not pretty.) will help you test:
> [..]

On PA-RISC this seems to work fine with Helge's patch to wire up the
clone3 syscall.

root@c3750:/# clonetest
Parent process received child's pid 84 as return value
Parent process received child's pidfd 3
Parent process received child's pid 84 as return argument
Child process with pid 84
root@c3750:/# echo $?
0

Regards
Sven