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From: Arnd Bergmann <arnd@kernel.org>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
	Helge Deller <deller@gmx.de>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	"David S. Miller" <davem@davemloft.net>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"the arch/x86 maintainers" <x86@kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Christoph Hellwig <hch@infradead.org>,
	Feng Tang <feng.tang@intel.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>,
	Parisc List <linux-parisc@vger.kernel.org>,
	linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
	linux-s390 <linux-s390@vger.kernel.org>,
	sparclinux <sparclinux@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	Linux API <linux-api@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v5 4/6] mm: simplify compat numa syscalls
Date: Tue, 27 Jul 2021 20:49:40 +0200	[thread overview]
Message-ID: <CAK8P3a0WT36Lg4nRBWx_kqb9yKj0mHx8gTdzCsDfrx1tQSEqbA@mail.gmail.com> (raw)
In-Reply-To: <YQBSpxZR4P/Phpf1@osiris>

On Tue, Jul 27, 2021 at 8:38 PM Heiko Carstens <hca@linux.ibm.com> wrote:
>
> -268  common    mbind                   sys_mbind                       compat_sys_mbind
> -269  common    get_mempolicy           sys_get_mempolicy               compat_sys_get_mempolicy
> -270  common    set_mempolicy           sys_set_mempolicy               compat_sys_set_mempolicy
> +268  common    mbind                   sys_mbind                       sys_mbind
> +269  common    get_mempolicy           sys_get_mempolicy               sys_get_mempolicy
> +270  common    set_mempolicy           sys_set_mempolicy               sys_set_mempolicy
>
> would remove compat_ptr() conversion from nmask above if I'm not mistaken.

Maybe I'm misremembering how compat syscalls work on s390. Doesn't
SYSCALL_DEFINEx(sys_mbind) still create two entry points __s390x_sys_mbind()
and __s390_sys_mbind() with different argument conversion (__SC_CAST vs
__SC_COMPAT_CAST)? I thought that was the whole point of the macros.

        Arnd

  reply	other threads:[~2021-07-27 18:50 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-27 14:48 [PATCH v5 0/6] compat: remove compat_alloc_user_space Arnd Bergmann
2021-07-27 14:48 ` [PATCH v5 1/6] kexec: move locking into do_kexec_load Arnd Bergmann
2021-07-28 16:09   ` Eric W. Biederman
2021-07-27 14:48 ` [PATCH v5 2/6] kexec: avoid compat_alloc_user_space Arnd Bergmann
2021-07-28 16:10   ` Eric W. Biederman
2021-07-27 14:48 ` [PATCH v5 3/6] mm: simplify compat_sys_move_pages Arnd Bergmann
2021-07-27 14:48 ` [PATCH v5 4/6] mm: simplify compat numa syscalls Arnd Bergmann
2021-07-27 17:27   ` Heiko Carstens
2021-07-27 17:40     ` Arnd Bergmann
2021-07-27 18:38       ` Heiko Carstens
2021-07-27 18:49         ` Arnd Bergmann [this message]
2021-07-27 19:15           ` Heiko Carstens
2021-07-27 14:48 ` [PATCH v5 5/6] compat: remove some compat entry points Arnd Bergmann
2021-07-27 14:48 ` [PATCH v5 6/6] arch: remove compat_alloc_user_space Arnd Bergmann
2021-07-27 15:09   ` Christoph Hellwig
2021-07-27 14:59 ` [PATCH v5 0/6] compat: " Christoph Hellwig
2021-07-27 20:10   ` Andrew Morton
2021-07-27 20:42     ` Arnd Bergmann
2021-07-30  9:49 ` Heiko Carstens
2021-07-30 13:35   ` Arnd Bergmann

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