From patchwork Thu Jan 10 16:24:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 1023056 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43bBpg0PCbz9sCs for ; Fri, 11 Jan 2019 03:51:23 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=arndb.de Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43bBpf6D0pzDqxB for ; Fri, 11 Jan 2019 03:51:22 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=arndb.de (client-ip=212.227.17.24; helo=mout.kundenserver.de; envelope-from=arnd@arndb.de; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=arndb.de Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.17.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43bBPH6HM0zDqnp for ; Fri, 11 Jan 2019 03:32:51 +1100 (AEDT) Received: from wuerfel.lan ([109.192.41.194]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.145]) with ESMTPA (Nemesis) id 1MStGi-1gqtJn10Qg-00UNaT; Thu, 10 Jan 2019 17:25:13 +0100 From: Arnd Bergmann To: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 06/15] ARM: add migrate_pages() system call Date: Thu, 10 Jan 2019 17:24:26 +0100 Message-Id: <20190110162435.309262-7-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190110162435.309262-1-arnd@arndb.de> References: <20190110162435.309262-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:xU1TfvUWuXdLttcRhOwMDdJJXZRPbxZEzH/siDEOVU0h6xSKutI 9QsRxUZDYmciiqijchskFcKTpq+zTdu1Z3OJ6HXVSfUcAA+HxeciwrBeeSL6Ckg3kR4vhW6 M00Lmj5s9Y3w6Le9cFFx9VvdHdeeOpVNHkzmK9YN7A4Vyz/gVMPCkuNCa3YGL4MWEdk3Y2L uZjLpOEPaYJJ39nJiErlA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:hLUGgxEY8X8=:xNG3o7sRfJqQLUE25UzPlL CnOaq491Ig5QdUIpsE3OY2RymTNlkew3UdMmMeqR8/yLMPyKZ4xiH5WTdaxDX5o8eb+a5MbmM cK9Jn2E9tx/vU/yASdWa83mZIM506YiepnTAk+gzq1tPucAtCsa8f6dHdmPSMTe2JV5VVH14v enC+Jt1hf7JjhtpB9jKaU0XuRQhq3e4ihVSGK4RJYnqpNpw7MuyU+d6l7/TYnIG1ZZDXcQHtY IIpw1YOnL/Vif+S2eCon3xelADz7FlqLrO1rlAeBrNTQuB47sMX712phIY0bVfVl4cSxTj/9z CG6+4CUdrzEgIXu3ffJANuq2bNKfA9bvKZWKp5GycdBMeJzZzpkOxkLVDUlMq+Zm6HO3NthCE IOVjwAPokK4QhjnI+G+tlTcKVQx2Qyhaz085n6iQgb7aZLqSwUM/rXy2lgZdg1lujhJBxbxDa ZhX7CmLC4Lu6O6v0ymv5M4fu9dFyUowGOMmmHNUXJH7KvGjqzKi6sj7MMMWGinaQf2OsAsz5v 8g9+lG9+6eKun+k3bomlqkS+rbEoqyA7UVDYEjPjsFjioKpyHUQID/gmcu2MIb7tYE0zmyxQw smSHTtq9yvmMBf5fDkVhYnoazsmUXCtjF8xlP/8kNZVTZAiQ4EVf/SBPha/SOZQR+oAtH1pRR p6lpKoKkHu2Zii5fu/kW7RY9ZEVjb8axs2HHTizG/5a4DA+iEFB+JTBJNZDrFU2uVJi/Vt8Hr t720sGF30ie2QVIWKMPDQ+q2J46hJn38bYkrSw== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dalias@libc.org, linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, catalin.marinas@arm.com, will.deacon@arm.com, linux@dominikbrodowski.net, jcmvbkbc@gmail.com, deepa.kernel@gmail.com, hpa@zytor.com, sparclinux@vger.kernel.org, linux-s390@vger.kernel.org, dave@stgolabs.net, deller@gmx.de, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, geert@linux-m68k.org, firoz.khan@linaro.org, mattst88@gmail.com, fenghua.yu@intel.com, Arnd Bergmann , heiko.carstens@de.ibm.com, linux-m68k@lists.linux-m68k.org, ink@jurassic.park.msu.ru, luto@kernel.org, tglx@linutronix.de, linux-arm-kernel@lists.infradead.org, monstr@monstr.eu, tony.luck@intel.com, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, paul.burton@mips.com, ebiederm@xmission.com, linux-alpha@vger.kernel.org, schwidefsky@de.ibm.com, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" The migrate_pages system call has an assigned number on all architectures except ARM. When it got added initially in commit d80ade7b3231 ("ARM: Fix warning: #warning syscall migrate_pages not implemented"), it was intentionally left out based on the observation that there are no 32-bit ARM NUMA systems. However, there are now arm64 NUMA machines that can in theory run 32-bit kernels (actually enabling NUMA there would require additional work) as well as 32-bit user space on 64-bit kernels, so that argument is no longer very strong. Assigning the number lets us use the system call on 64-bit kernels as well as providing a more consistent set of syscalls across architectures. Signed-off-by: Arnd Bergmann --- arch/arm/include/asm/unistd.h | 1 - arch/arm/tools/syscall.tbl | 1 + arch/arm64/include/asm/unistd.h | 2 +- arch/arm64/include/asm/unistd32.h | 2 ++ 4 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index 88ef2ce1f69a..d713587dfcf4 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -45,7 +45,6 @@ * Unimplemented (or alternatively implemented) syscalls */ #define __IGNORE_fadvise64_64 -#define __IGNORE_migrate_pages #ifdef __ARM_EABI__ /* diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl index 8edf93b4490f..86de9eb34296 100644 --- a/arch/arm/tools/syscall.tbl +++ b/arch/arm/tools/syscall.tbl @@ -414,3 +414,4 @@ 397 common statx sys_statx 398 common rseq sys_rseq 399 common io_pgetevents sys_io_pgetevents +400 common migrate_pages sys_migrate_pages diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index a7b1fc58ffdf..261216c3336e 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -44,7 +44,7 @@ #define __ARM_NR_compat_set_tls (__ARM_NR_COMPAT_BASE + 5) #define __ARM_NR_COMPAT_END (__ARM_NR_COMPAT_BASE + 0x800) -#define __NR_compat_syscalls 400 +#define __NR_compat_syscalls 401 #endif #define __ARCH_WANT_SYS_CLONE diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index 04ee190b90fe..355fe2bc035b 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -821,6 +821,8 @@ __SYSCALL(__NR_statx, sys_statx) __SYSCALL(__NR_rseq, sys_rseq) #define __NR_io_pgetevents 399 __SYSCALL(__NR_io_pgetevents, compat_sys_io_pgetevents) +#define __NR_migrate_pages 400 +__SYSCALL(__NR_migrate_pages, sys_migrate_pages) /* * Please add new compat syscalls above this comment and update