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From: Heiko Carstens <hca@linux.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Sven Schnelle <svens@linux.ibm.com>,
	Andreas Krebbel <krebbel@linux.ibm.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Subject: Re: [RFC PATCH 8/8] s390/syscalls: Switch to generic system call table generation
Date: Tue, 11 Nov 2025 12:36:47 +0100	[thread overview]
Message-ID: <20251111113647.8887B5c-hca@linux.ibm.com> (raw)
In-Reply-To: <f4531526-e981-4160-8369-50a8c8d86e36@app.fastmail.com>

On Mon, Nov 10, 2025 at 09:51:53PM +0100, Arnd Bergmann wrote:
> On Mon, Nov 10, 2025, at 19:54, Heiko Carstens wrote:
> > +161	common	sched_rr_get_interval		sys_sched_rr_get_interval
> > +162	common	nanosleep			sys_nanosleep
> > +163	common	mremap				sys_mremap
> > +167	common	query_module
> > +168	common	poll				sys_poll
> > +169	common	nfsservctl
> > +172	common	prctl				sys_prctl
> 
> Nothing wrong with your patch, but while reading through this, I noticed
> that we are somewhat inconsistent about syscalls that are gone, with
> three possible methods:
> 
> # 167 was query_module
> 167	common	query_module                  sys_ni_syscall
> 167	common	query_module
> 
> You use the third one now, which is the same as x86 but nothing
> else. The second one using an explicit 'sys_ni_syscall' is the
> most common and has the same effect, so maybe use that as well.

Ok, will change.

> Eventually we may want to convert everything to the first method
> and drop the syscall macros, but that would be visible in
> user-space and might cause regression, so it should be a
> separate series across all architectures if we want to go there.

Yes, I thought about to remove them, but this is user space
visible. Therefore I kept it for now.

  reply	other threads:[~2025-11-11 11:36 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-10 18:54 [RFC PATCH 0/8] s390: Remove compat support Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 1/8] s390/ptrace: Rename psw_t32 to psw32_t Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 2/8] s390/kvm: Use psw32_t instead of psw_compat_t Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 3/8] s390/syscalls: Add pt_regs parameter to SYSCALL_DEFINE0() syscall wrapper Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 4/8] tools: Remove s390 compat support Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 5/8] s390: Remove " Heiko Carstens
2025-11-10 21:33   ` Arnd Bergmann
2025-11-11 11:34     ` Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 6/8] s390/uapi: Remove 31 bit support from uapi header files Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 7/8] s390/syscalls: Remove system call table pointer from thread_struct Heiko Carstens
2025-11-10 18:54 ` [RFC PATCH 8/8] s390/syscalls: Switch to generic system call table generation Heiko Carstens
2025-11-10 20:51   ` Arnd Bergmann
2025-11-11 11:36     ` Heiko Carstens [this message]
2025-11-11 12:41 ` [RFC PATCH 0/8] s390: Remove compat support Arnd Bergmann

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