linux-kernel - Re: [PATCH 09/17] arm64: convert unistd

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Message-ID: <ZofirWrl3nAuOQb_@arm.com>
Date: Fri, 5 Jul 2024 13:10:21 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Arnd Bergmann <arnd@...nel.org>
Cc: linux-arch@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Vineet Gupta <vgupta@...nel.org>,
	Russell King <linux@...linux.org.uk>, Will Deacon <will@...nel.org>,
	Guo Ren <guoren@...nel.org>, Brian Cain <bcain@...cinc.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>, Dinh Nguyen <dinguyen@...nel.org>,
	Jonas Bonn <jonas@...thpole.se>,
	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
	Stafford Horne <shorne@...il.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Rich Felker <dalias@...c.org>,
	John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
	"David S. Miller" <davem@...emloft.net>,
	Andreas Larsson <andreas@...sler.com>,
	Christian Brauner <brauner@...nel.org>,
	Mark Rutland <mark.rutland@....com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-csky@...r.kernel.org,
	linux-hexagon@...r.kernel.org, loongarch@...ts.linux.dev,
	linux-openrisc@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 09/17] arm64: convert unistd_32.h to syscall.tbl format

On Thu, Jul 04, 2024 at 04:36:03PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> This is a straight conversion from the old asm/unistd32.h into the
> format used by 32-bit arm and most other architectures, calling scripts
> to generate the asm/unistd32.h header and a new asm/syscalls32.h headers.
> 
> I used a semi-automated text replacement method to do the conversion,
> and then used 'vimdiff' to synchronize the whitespace and the (unused)
> names of the non-compat syscalls with the arm version.
> 
> There are two differences between the generated syscalls names and the
> old version:
> 
>  - the old asm/unistd32.h contained only a __NR_sync_file_range2
>    entry, while the arm32 version also defines
>    __NR_arm_sync_file_range with the same number. I added this
>    duplicate back in asm/unistd32.h.
> 
>  - __NR__sysctl was removed from the arm64 file a while ago, but
>    all the tables still contain it. This should probably get removed
>    everywhere but I added it here for consistency.
> 
> On top of that, the arm64 version does not contain any references to
> the 32-bit OABI syscalls that are not supported by arm64. If we ever
> want to share the file between arm32 and arm64, it would not be
> hard to add support for both in one file.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Acked-by: Catalin Marinas <catalin.marinas@....com>