From patchwork Mon Jul 27 16:29:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 11687195 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 194C36C1 for ; Mon, 27 Jul 2020 16:30:26 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CEDEB2075A for ; Mon, 27 Jul 2020 16:30:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="0nX8W/cG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CEDEB2075A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F27A76B0008; Mon, 27 Jul 2020 12:30:24 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id EAF816B000A; Mon, 27 Jul 2020 12:30:24 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D786E6B000C; Mon, 27 Jul 2020 12:30:24 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0201.hostedemail.com [216.40.44.201]) by kanga.kvack.org (Postfix) with ESMTP id C0FDE6B0008 for ; Mon, 27 Jul 2020 12:30:24 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 6E030824999B for ; Mon, 27 Jul 2020 16:30:24 +0000 (UTC) X-FDA: 77084393568.28.milk24_2403cce26f62 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin28.hostedemail.com (Postfix) with ESMTP id BA4ED6D75 for ; Mon, 27 Jul 2020 16:30:22 +0000 (UTC) X-Spam-Summary: 10,1,0,c9ba1d309bba81b5,d41d8cd98f00b204,rppt@kernel.org,,RULES_HIT:41:341:355:379:541:800:960:973:988:989:1260:1311:1314:1345:1359:1431:1437:1515:1535:1543:1711:1730:1747:1777:1792:1981:2194:2199:2393:2559:2562:2895:3138:3139:3140:3141:3142:3354:3867:3868:3874:4117:4321:4605:5007:6119:6261:6653:6742:6743:7576:8660:10004:11026:11473:11657:11658:11914:12043:12296:12297:12438:12517:12519:12555:12679:12895:12986:13148:13230:13894:14096:14181:14394:14721:21080:21212:21451:21627:21939:30034:30051:30054:30070:30075,0,RBL:198.145.29.99:@kernel.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100;04yrfab9rbm9pnb4omp4e4b497eboopq7u4e6rit8kjxg6h86t1pnk1bp5e6ttr.asoe61g7m6nr99ab1y69co57ca7hhfuwbx3hhubqi7at1kdh813yqgnkqsyqfgd.e-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: milk24_2403cce26f62 X-Filterd-Recvd-Size: 6545 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf11.hostedemail.com (Postfix) with ESMTP for ; Mon, 27 Jul 2020 16:30:22 +0000 (UTC) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4617A206E7; Mon, 27 Jul 2020 16:30:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595867421; bh=u1eiiMaArTRuCUqI0im6HZbRNLX7K+2+DDG+1VgTAkU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0nX8W/cGw6detApkc5fvadBST2If0vYuGRcybJhAGjeKqSinDtAx5mDEi73QrkvBJ nJuyAhZt5SM9o8c2RSHn0oUWm+alokGOxAPsme+U5UbI0xxg5xe9xCpWRKY3xQMv9Y X2U7Pk31z9WUlWh4jcGDiSgMmzjO2nR0w9HR9SDk= From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexander Viro , Andrew Morton , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christopher Lameter , Dan Williams , Dave Hansen , Elena Reshetova , "H. Peter Anvin" , Idan Yaniv , Ingo Molnar , James Bottomley , "Kirill A. Shutemov" , Matthew Wilcox , Mike Rapoport , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Thomas Gleixner , Tycho Andersen , Will Deacon , linux-api@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org, Palmer Dabbelt Subject: [PATCH v2 4/7] arch, mm: wire up memfd_secret system call were relevant Date: Mon, 27 Jul 2020 19:29:32 +0300 Message-Id: <20200727162935.31714-5-rppt@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200727162935.31714-1-rppt@kernel.org> References: <20200727162935.31714-1-rppt@kernel.org> MIME-Version: 1.0 X-Rspamd-Queue-Id: BA4ED6D75 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Mike Rapoport Wire up memfd_secret system call on architectures that define ARCH_HAS_SET_DIRECT_MAP, namely arm64, risc-v and x86. Signed-off-by: Mike Rapoport Acked-by: Palmer Dabbelt Acked-by: Arnd Bergmann --- arch/arm64/include/asm/unistd32.h | 2 ++ arch/arm64/include/uapi/asm/unistd.h | 1 + arch/riscv/include/asm/unistd.h | 1 + arch/x86/entry/syscalls/syscall_32.tbl | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 1 + include/linux/syscalls.h | 1 + include/uapi/asm-generic/unistd.h | 7 ++++++- 7 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index 6d95d0c8bf2f..a379ba31f7c4 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -885,6 +885,8 @@ __SYSCALL(__NR_openat2, sys_openat2) __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) #define __NR_faccessat2 439 __SYSCALL(__NR_faccessat2, sys_faccessat2) +#define __NR_memfd_secret 439 +__SYSCALL(__NR_memfd_secret, sys_memfd_secret) /* * Please add new compat syscalls above this comment and update diff --git a/arch/arm64/include/uapi/asm/unistd.h b/arch/arm64/include/uapi/asm/unistd.h index f83a70e07df8..ce2ee8f1e361 100644 --- a/arch/arm64/include/uapi/asm/unistd.h +++ b/arch/arm64/include/uapi/asm/unistd.h @@ -20,5 +20,6 @@ #define __ARCH_WANT_SET_GET_RLIMIT #define __ARCH_WANT_TIME32_SYSCALLS #define __ARCH_WANT_SYS_CLONE3 +#define __ARCH_WANT_MEMFD_SECRET #include diff --git a/arch/riscv/include/asm/unistd.h b/arch/riscv/include/asm/unistd.h index 977ee6181dab..6c316093a1e5 100644 --- a/arch/riscv/include/asm/unistd.h +++ b/arch/riscv/include/asm/unistd.h @@ -9,6 +9,7 @@ */ #define __ARCH_WANT_SYS_CLONE +#define __ARCH_WANT_MEMFD_SECRET #include diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index d8f8a1a69ed1..6f8b5978053b 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -443,3 +443,4 @@ 437 i386 openat2 sys_openat2 438 i386 pidfd_getfd sys_pidfd_getfd 439 i386 faccessat2 sys_faccessat2 +440 i386 memfd_secret sys_memfd_secret diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index 78847b32e137..7d3775d1c3d7 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -360,6 +360,7 @@ 437 common openat2 sys_openat2 438 common pidfd_getfd sys_pidfd_getfd 439 common faccessat2 sys_faccessat2 +440 common memfd_secret sys_memfd_secret # # x32-specific system call numbers start at 512 to avoid cache impact diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index b951a87da987..e4d7b30867c6 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -1005,6 +1005,7 @@ asmlinkage long sys_pidfd_send_signal(int pidfd, int sig, siginfo_t __user *info, unsigned int flags); asmlinkage long sys_pidfd_getfd(int pidfd, int fd, unsigned int flags); +asmlinkage long sys_memfd_secret(unsigned long flags); /* * Architecture-specific system calls diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index f4a01305d9a6..7b288347c5a9 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -858,8 +858,13 @@ __SYSCALL(__NR_pidfd_getfd, sys_pidfd_getfd) #define __NR_faccessat2 439 __SYSCALL(__NR_faccessat2, sys_faccessat2) +#ifdef __ARCH_WANT_MEMFD_SECRET +#define __NR_memfd_secret 440 +__SYSCALL(__NR_memfd_secret, sys_memfd_secret) +#endif + #undef __NR_syscalls -#define __NR_syscalls 440 +#define __NR_syscalls 441 /* * 32 bit systems traditionally used different