linux-kernel - Re: [PATCH v6 12/20] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

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Message-ID: <3828111.AFlzLO4Qgd@wuerfel>
Date:	Wed, 16 Dec 2015 17:07:15 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Yury Norov <ynorov@...iumnetworks.com>, catalin.marinas@....com,
	linux-kernel@...r.kernel.org, pinskia@...il.com,
	Prasun.Kapoor@...iumnetworks.com, schwab@...e.de,
	broonie@...nel.org, Nathan_Lynch@...tor.com, agraf@...e.de,
	klimov.linux@...il.com,
	Andrew Pinski <Andrew.Pinski@...iumnetworks.com>,
	jan.dakinevich@...il.com, Andrew Pinski <apinski@...ium.com>,
	ddaney.cavm@...il.com, bamvor.zhangjian@...wei.com,
	philipp.tomsich@...obroma-systems.com, joseph@...esourcery.com,
	christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH v6 12/20] arm64:ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it

On Wednesday 16 December 2015 00:42:38 Yury Norov wrote:
> +/* Using non-compat syscalls where necessary */
> +#define compat_sys_fadvise64_64        sys_fadvise64_64
> +#define compat_sys_fallocate           sys_fallocate
> +#define compat_sys_ftruncate64         sys_ftruncate
> +#define compat_sys_lookup_dcookie      sys_lookup_dcookie
> +#define compat_sys_pread64             sys_pread64
> +#define compat_sys_pwrite64            sys_pwrite64
> +#define compat_sys_readahead           sys_readahead
> +#define compat_sys_shmat               sys_shmat
> +#define compat_sys_sigaltstack         sys_sigaltstack
> +#define compat_sys_sync_file_range     sys_sync_file_range
> +#define compat_sys_truncate64          sys_truncate
> +#define sys_llseek                     sys_lseek
> +
> +#define compat_sys_open_by_handle_at   sys_open_by_handle_at
> +#define compat_sys_openat              sys_openat

Very nice and short list now!

I've double-checked all calls and the only one I'm not sure about is
sys_sigaltstack. Did we discuss that one earlier?
My first guess would be that it's easier to use the compat
version of that.

I would probably also group sys_shmat with sys_openat, because it's
different from the other ones in the first block as this is not
about passing 64-bit arguments as registers, but instead it's about
the behavior of the system call.

	Arnd
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