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Date: Mon, 21 Jan 2019 13:15:19 +0100
From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH v2 28/29] y2038: rename old time and utime syscalls
References: <20190118161835.2259170-1-arnd@arndb.de>
 <20190118161835.2259170-29-arnd@arndb.de>
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On Fri, Jan 18, 2019 at 05:18:34PM +0100, Arnd Bergmann wrote:
> The time, stime, utime, utimes, and futimesat system calls are only
> used on older architectures, and we do not provide y2038 safe variants
> of them, as they are replaced by clock_gettime64, clock_settime64,
> and utimensat_time64.
> 
> However, for consistency it seems better to have the 32-bit architectures
> that still use them call the "time32" entry points (leaving the
> traditional handlers for the 64-bit architectures), like we do for system
> calls that now require two versions.
> 
> Note: We used to always define __ARCH_WANT_SYS_TIME and
> __ARCH_WANT_SYS_UTIME and only set __ARCH_WANT_COMPAT_SYS_TIME and
> __ARCH_WANT_SYS_UTIME32 for compat mode on 64-bit kernels. Now this is
> reversed: only 64-bit architectures set __ARCH_WANT_SYS_TIME/UTIME, while
> we need __ARCH_WANT_SYS_TIME32/UTIME32 for 32-bit architectures and compat
> mode. The resulting asm/unistd.h changes look a bit counterintuitive.
> 
> This is only a cleanup patch and it should not change any behavior.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
...
>  arch/s390/include/asm/unistd.h              |  2 +-

For the s390 bits:
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>