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: 155208 Delivered-To: patch@linaro.org Received: by 2002:a02:48:0:0:0:0:0 with SMTP id 69csp2087487jaa; Thu, 10 Jan 2019 08:27:33 -0800 (PST) X-Google-Smtp-Source: ALg8bN6wLyYYul0dVuuHfmM0+ryn4p3CU1fNV5cCZ8uDHWvrUTSNk2VCU0cxbOrJxjcPdWhZiInC X-Received: by 2002:a63:6207:: with SMTP id w7mr9653289pgb.90.1547137653243; Thu, 10 Jan 2019 08:27:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1547137653; cv=none; d=google.com; s=arc-20160816; b=sLu8FqtuIN8ArqInQ64ytk3Cp9IgyiLwZR6lc1lNlC929juvjY63j39MZhkccT9gZo RbG+vSzJBd8GaJxS1bBoo9oX8sKtwnZ6gYFedSYLqMPThwMCGvgQpt7cakREU2Qa6ljI k5T6ycDJ5VReXCp0fLQQtFpekjprBJKydF2H6DC3TQHZefLGKHsDijpXqzSXcnydYrC0 0jCGhHq28OxRMf17Jfagk2SB9Yf/IToMXlmuiTo2oJWJubzP0PhevSgWBXYoOvLkQr7u 9BnmtWDs0UznIKq3Hy84nIxmepb9PnWy63gTSGGkrD5DpIX9Ei8P+/NF533VQXfKI/A9 UDfA== 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=/82ellgtBX1DQkXwii/5an9BYLkieY9jgs0ftF3/wH0=; b=JfI3j4uYUb3GtFzUuN6UuLFAXl8oRLkk4T6STkyG7xQ+xIpYjeUOabABYA8HOKqltp YhIuCbZ/el5I/lCG/fvnqjBTI8JKAqlxl4WxJBIS5XO1mL0X8QvWmslSvP2B7gtXAfyu qs1W1t+tlDJ49qlRgXLnGloR+wh4AxpKP06L4LyjmfBlCp3zQEmGb8aCVDF7bfpu2qLX tc/Pfwe605jnwSpew/Zp+x/TSrckVt52aXj6tQlmbNYFZprWfTd1OzX3xtC3apG6j3ol cwyatzgpWE66ylg1r8+IQhYU6UxA9wTGdrX0iPM0Ft9gw3lRmbncH0p3fiTrViMqqoS+ JaVA== 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 a19si7447769pgj.429.2019.01.10.08.27.32; Thu, 10 Jan 2019 08:27:33 -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 S1730198AbfAJQ1b (ORCPT + 31 others); Thu, 10 Jan 2019 11:27:31 -0500 Received: from mout.kundenserver.de ([212.227.17.13]:60007 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729868AbfAJQ0W (ORCPT ); Thu, 10 Jan 2019 11:26:22 -0500 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 Cc: Arnd Bergmann , ink@jurassic.park.msu.ru, 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, 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, firoz.khan@linaro.org, ebiederm@xmission.com, deepa.kernel@gmail.com, linux@dominikbrodowski.net, akpm@linux-foundation.org, dave@stgolabs.net, 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 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:iEETSAcdels=:snhz2M6ZDU1wMmINknfiml 8rIFJhUvhs+Ay8kN3BD7oJb2etgmtw72I2WkvaCrrbpRNfkB2lNhIHVSPih1sMYmqO8aNQhJC BAYxAg9zPjIUiMPXEQFroevk1mcSjtKSEWh8quV/Sx6szi6sr9kr3xbVBCzBSqoiFxOEDf2Yz P0ln4ZJrlRLi3JmoA4TJnA0yYWSVQY8ix4z2XMx3D1T3kARsBL0FbF1VNr3Dh6ztv7puylfk2 iBvTE5iVFltU/ODVCuFvJ0hzNmUh1J5n0ncgn+EUazsxZ6mzE1/hQKnFBwZyb6tyFNVARadXx sZ7PtBxJJiJyHdENuekRI3RL2e3+puXXmNss+Kw/wkN/vaN3tNJDO/wO8L32tp928ltxYFMVc Qr/oNbqfPdYiEI1z+T1yD4v72J+I8GXPuigetbee+wGFI7e5tGWKbiFzc3yfC9d3v8ropk7I5 ud80M0hnDuJTSKJ8AK1sIXep07Gs1X82o9ea+Voj3XjdYuH1dPb+6il6FeI6tPnB83kNY2vCW ZwZ614d05NhmsbiVlfK/xAkzjOArgomBg7WKFPSBQTRQWj41UA+qTNOIVNaFEK8QletG2TSZU nboVUxJ7xylPRFuUPMs5pUCVkgj7ZUWXtqlgVO81GqQwQw0RlUkcJHOxtO8DrbTDsbo5Fc6J8 hyFARcweFgLqPmYrPk1mavinSjYCbldtqMnzC+do764FjEsm1c0Uup3bQg5DXq4LiYGyrIjVz ncFrswlP2h/DpgfzhfuJvMrTWN6BYDXT8cD1iQ== 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 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