From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D293CC2D0E4 for ; Tue, 17 Nov 2020 17:15:42 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 63A9724248 for ; Tue, 17 Nov 2020 17:15:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 63A9724248 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id B53A3100EBBAB; Tue, 17 Nov 2020 09:15:41 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=cmarinas@kernel.org; receiver= Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id CB7C4100EBBA0 for ; Tue, 17 Nov 2020 09:15:39 -0800 (PST) Received: from trantor (unknown [2.26.170.190]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2CBC6238E6; Tue, 17 Nov 2020 17:15:33 +0000 (UTC) Date: Tue, 17 Nov 2020 17:15:30 +0000 From: Catalin Marinas To: Mike Rapoport Subject: Re: [PATCH v9 8/9] arch, mm: wire up memfd_secret system call were relevant Message-ID: References: <20201117162932.13649-1-rppt@kernel.org> <20201117162932.13649-9-rppt@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201117162932.13649-9-rppt@kernel.org> Message-ID-Hash: QAY22LIHC4MFSGU2DISNCSLTADPMPPWT X-Message-ID-Hash: QAY22LIHC4MFSGU2DISNCSLTADPMPPWT X-MailFrom: cmarinas@kernel.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Andrew Morton , Alexander Viro , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Christopher Lameter , Dave Hansen , David Hildenbrand , Elena Reshetova , "H. Peter Anvin" , Ingo Molnar , James Bottomley , "Kirill A. Shutemov" , Matthew Wilcox , Mark Rutland , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , Rick Edgecombe , Roman Gushchin , Shuah Khan , 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-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org, Palmer Dabbelt X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Tue, Nov 17, 2020 at 06:29:31PM +0200, Mike Rapoport wrote: > 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/unistd.h | 2 +- > 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 | 6 +++++- > scripts/checksyscalls.sh | 4 ++++ > 9 files changed, 17 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h > index 86a9d7b3eabe..949788f5ba40 100644 > --- a/arch/arm64/include/asm/unistd.h > +++ b/arch/arm64/include/asm/unistd.h > @@ -38,7 +38,7 @@ > #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 442 > +#define __NR_compat_syscalls 443 > #endif > > #define __ARCH_WANT_SYS_CLONE > diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h > index 6c1dcca067e0..5279481ec95b 100644 > --- a/arch/arm64/include/asm/unistd32.h > +++ b/arch/arm64/include/asm/unistd32.h > @@ -891,6 +891,8 @@ __SYSCALL(__NR_faccessat2, sys_faccessat2) > __SYSCALL(__NR_process_madvise, sys_process_madvise) > #define __NR_watch_mount 441 > __SYSCALL(__NR_watch_mount, sys_watch_mount) > +/* 442 is memfd_secret, it is not implemented for 32-bit */ > +__SYSCALL(442, sys_ni_syscall) It now behaves correctly for compat but I don't think we need to increment __NR_compat_syscalls. The compat syscall handler already calls sys_ni_syscall() if out of range. So the only arm64 change needed is defining __ARCH_WANT_MEMFD_SECRET (well, we don't have a use for it yet ;)). -- Catalin _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org