From patchwork Fri Jan 18 16:18:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 156014 Delivered-To: patch@linaro.org Received: by 2002:a02:48:0:0:0:0:0 with SMTP id 69csp3444918jaa; Fri, 18 Jan 2019 08:25:09 -0800 (PST) X-Google-Smtp-Source: ALg8bN7KwTNjpQJp4Pwnjm9YfTWh9YkSGJhAxcbFFOXD46SOKDbBTwNSQqeaF8X9QqQu8wWLJbax X-Received: by 2002:a17:902:6b87:: with SMTP id p7mr20091317plk.282.1547828709311; Fri, 18 Jan 2019 08:25:09 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547828709; cv=none; d=google.com; s=arc-20160816; b=BBmOGK+yncldh9ukXOGjsnHsm1kXiiBeSJibj6WEewMicJ5zV12D1XQAH0tMR48DxC kS8rAjF7OzAmKaf9TfUNJtNuj+ojtPvHiUp7xKdvx8oCbEVMt9+oJs301KpYhi9wSYGS dbeExqeIFrtVDQiR5zphMjrb6OTuHJHKWqhmiwdVqM9TxU4E62HmicvmXjK01lEE8jpQ Uid0nt1qnN2a+/p/1zPcO8Plg/WM3Ile3dYErJV8J4pcbpINJU5up0fASoHmRYxWAJzf x2ZFva/sLBXqUIB/GuQAkY4qXdIISIF4d1von1SP4PD53BxSw36C0ZyjrPLd0H2Uc6V/ zXdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=u46X/QRCqjGjTXN5kGKDN8o4kxJTujnK/7ytTGsbP3w=; b=ltVjwwa6gZy2VOPSR+2pnHEVbkmm5NW3d/a9v2u2dQd+9vNH+YIsZXh7zOchKYPsvc P6WvRggiXAsIEX+Vso6T7FK6KoJ8PtDICJiCQ1ewz25AcNppYkurxIpCv9Ye5JxkxEe/ +M3XmcB84NC4fQiTQL4wZWEF9bv4avCvwkvomRCGIphtgkiu72LFuGns0xTbP8GolU77 xzLO0j9Peu9G6yVhz5r2mS/AB4hotF4/ICcs/apuhZOFCM/LPozx3mVYG6CsDj1y7FL5 arOVdsOzX65h3ctiBdS+NCHBlP/bPWFYdi5b1JJa0bFUhk59IR8s6PojjGCp8dnaquh3 DPIQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u11si4614534plq.287.2019.01.18.08.25.09; Fri, 18 Jan 2019 08:25:09 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728304AbfARQUe (ORCPT + 13 others); Fri, 18 Jan 2019 11:20:34 -0500 Received: from mout.kundenserver.de ([217.72.192.75]:50007 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728078AbfARQUd (ORCPT ); Fri, 18 Jan 2019 11:20:33 -0500 Received: from wuerfel.lan ([109.192.41.194]) by mrelayeu.kundenserver.de (mreue109 [212.227.15.145]) with ESMTPA (Nemesis) id 1MKKd7-1gWQWS33t9-00LmRg; Fri, 18 Jan 2019 17:19:23 +0100 From: Arnd Bergmann To: y2038@lists.linaro.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org Cc: Arnd Bergmann , 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, heiko.carstens@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-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v2 06/29] ARM: add migrate_pages() system call Date: Fri, 18 Jan 2019 17:18:12 +0100 Message-Id: <20190118161835.2259170-7-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190118161835.2259170-1-arnd@arndb.de> References: <20190118161835.2259170-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:o3bTb4elB3z+286rn9+b5BP7tK9ifOmWUW+jka5ZcLRoBINPDJf u8PIZcP2oUy73YnUflDiwxkNfXIDgII5Pyhk+V14swnaTnFx5ocmSc3GvbMfPHBlAdH2hOO HnGoII6EJed1+C6r0RoTYwRkjRvEbyOrLcmhc5DagzjWZlLv5X7xA8BSuap5Ej3vVq2kBkR J33viKVBFQ1JhizF8SI/A== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:3TL+IMUlpzQ=:W4KhIatfhW7FMFXhanW/DA GRXuaIVZT5yLKobF9hxOAr0++qzuCRc1CvEdJhCRmyjg3tVnuVTea/UC1uvUl5+b8WbMQGZ2y IhAzxeBsFmWL53O9WpTTqoDT/nboxRQDmswH0/f/GTKPMN2z3vZwVUlRhzoSirbpF+lnxfjOZ sN/4WLTGYuHpbqrOxsstykpo2y8LRe1POgk4jbusH6bQF90n6M4iRhVrGRIOrVw2bdttMMlAA uT0OtEXxzSfFi0CYobAlGKnZqnyNhrd53D0fMCInpqHILWFd1DtjVcSRRThpH/sAtDi0bB10+ Ugb1IEqZY/t6Vwsm27UEtY2WdRDnob3jplYpxp7LEYnA9+MmRRxsSQGX4rwbfAh61hF01Z6w6 c1gGmtntitfEHrg2cn23IhBqYw4oKw2FRJOxB9tDFAw7RHOCw9DS4DZeuAH/963xwTtIZQzNY 1aXUG6Znslmrc13+enLNNpHHdqS95uRqE0RLgCHtmqVJSvSINH3VB0iFWhAu52D9FeScou6Jt DMCljPSLrh3jHaukqC84MTlYT6tYVfPoAwYvF7QgVEd2kgvyMgY2cHJMjfNpvBVodJDtgelWN WyT2nqJHgERRpJagCPwbdtU6mcbVNfRzxffHnacQ4vUxt4V/sJi/kqkoPRbuRzxPSp7atXUfB 1YBkP5nZaJQ1KkngOFAwcAZDCXzHTa7u9SVJNuPiXS2Wwsi0eYe4gZnZnIKeg8MQ2APOz+PXy XOmiTdMMxuVgn48bnD8Kw1Cy5XKVXUIjyQPYnQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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(-) -- 2.20.0 Acked-by: Catalin Marinas 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..f15bcbacb8f6 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, compat_sys_migrate_pages) /* * Please add new compat syscalls above this comment and update