From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Carstens Subject: Re: [PATCH v2 29/29] y2038: add 64-bit time_t syscalls to all 32-bit architectures Date: Mon, 21 Jan 2019 13:19:24 +0100 Message-ID: <20190121121923.GF4020@osiris> References: <20190118161835.2259170-1-arnd@arndb.de> <20190118161835.2259170-30-arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190118161835.2259170-30-arnd@arndb.de> Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: Arnd Bergmann Cc: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, mattst88@gmail.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com, geert@linux-m68k.org, monstr@monstr.eu, paul.burton@mips.com, deller@gmx.de, benh@kernel.crashing.org, mpe@ellerman.id.au, schwidefsky@de.ibm.com, dalias@libc.org, davem@davemloft.net, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, jcmvbkbc@gmail.com, akpm@linux-foundation.org, deepa.kernel@gmail.com, ebiederm@xmission.com, firoz.khan@linaro.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-p List-Id: linux-api@vger.kernel.org On Fri, Jan 18, 2019 at 05:18:35PM +0100, Arnd Bergmann wrote: > This adds 21 new system calls on each ABI that has 32-bit time_t > today. All of these have the exact same semantics as their existing > counterparts, and the new ones all have macro names that end in 'time64' > for clarification. > > This gets us to the point of being able to safely use a C library > that has 64-bit time_t in user space. There are still a couple of > loose ends to tie up in various areas of the code, but this is the > big one, and should be entirely uncontroversial at this point. > > In particular, there are four system calls (getitimer, setitimer, > waitid, and getrusage) that don't have a 64-bit counterpart yet, > but these can all be safely implemented in the C library by wrapping > around the existing system calls because the 32-bit time_t they > pass only counts elapsed time, not time since the epoch. They > will be dealt with later. > > Signed-off-by: Arnd Bergmann > --- > arch/s390/kernel/syscalls/syscall.tbl | 20 +++++++++ For the s390 bits: Acked-by: Heiko Carstens