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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT 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 AC47EC43218 for ; Tue, 11 Jun 2019 14:19:14 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 84969205ED for ; Tue, 11 Jun 2019 14:19:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="YeyJPpyQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 84969205ED Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=HxTNP7DzcBpdDpTvOaWKAtRU12HpzgA7wuTttmcvCUQ=; b=YeyJPpyQhS+MWn EcrRx9uQKo+KmbaPoqkayOvE5Gw5WUZ9ec86BBTEocb+4OwLjoY8aj1UySGO8hYssf5uygw72//4Q PmZ/qSd1THdjgH/Nip76r+UB7AZD4gElMmgjaQCQ6/SC3RryqxVXghvlDC16crLsjUUbmF6mxi3e9 +HFIn6Ye0DDcSPeLOZ1fz0xTW1PBihsMI7c+CDzftmm/38WEFPJRyGu7ks5m+QgYkbI535Aa73vHS 5mwdgynXO0Ark/7pSqqoeOrGQUPExyC8OpjpRiFU55c+ddRO2WigiqgyfmDdysH54mo+bIGjdQ0SE itHjR1wGMpYLXTxoPnfA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hahcH-0001BQ-C6; Tue, 11 Jun 2019 14:19:13 +0000 Received: from verein.lst.de ([213.95.11.211] helo=newverein.lst.de) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hahcE-0001B7-Qs for linux-riscv@lists.infradead.org; Tue, 11 Jun 2019 14:19:12 +0000 Received: by newverein.lst.de (Postfix, from userid 2407) id 3E91868B02; Tue, 11 Jun 2019 16:18:42 +0200 (CEST) Date: Tue, 11 Jun 2019 16:18:41 +0200 From: Christoph Hellwig To: Vladimir Murzin Subject: Re: [PATCH 02/17] mm: stub out all of swapops.h for !CONFIG_MMU Message-ID: <20190611141841.GA29151@lst.de> References: <20190610221621.10938-1-hch@lst.de> <20190610221621.10938-3-hch@lst.de> <516c8def-22db-027c-873d-a943454e33af@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <516c8def-22db-027c-873d-a943454e33af@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190611_071911_023584_64C13489 X-CRM114-Status: UNSURE ( 7.48 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Damien Le Moal , uclinux-dev@uclinux.org, Palmer Dabbelt , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, Christoph Hellwig Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org T24gVHVlLCBKdW4gMTEsIDIwMTkgYXQgMTE6MTU6NDRBTSArMDEwMCwgVmxhZGltaXIgTXVyemlu IHdyb3RlOgo+IE9uIDYvMTAvMTkgMTE6MTYgUE0sIENocmlzdG9waCBIZWxsd2lnIHdyb3RlOgo+ ID4gVGhlIHdob2xlIGhlYWRlciBmaWxlIGRlYWxzIHdpdGggc3dhcCBlbnRyaWVzIGFuZCBQVEVz LCBub25lIG9mIHdoaWNoCj4gPiBjYW4gZXhpc3QgZm9yIG5vbW11IGJ1aWxkcy4KPiAKPiBBbHRo b3VnaCBJIGFncmVlIHdpdGggdGhlIHBhdGNoLCBJJ20gd29uZGVyaW5nIGhvdyB5b3UgZ2V0IGlu dG8gaXQ/CgpXaXRob3V0IHRoYXQgdGhlIFJJU0MtViBub21tdSBibG93cyB1cCBsaWtlIHRoaXM6 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[213.95.11.211]) by mx.google.com with ESMTPS id h1si2080489wmb.105.2019.06.11.07.19.09 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Jun 2019 07:19:09 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) client-ip=213.95.11.211; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de Received: by newverein.lst.de (Postfix, from userid 2407) id 3E91868B02; Tue, 11 Jun 2019 16:18:42 +0200 (CEST) Date: Tue, 11 Jun 2019 16:18:41 +0200 From: Christoph Hellwig To: Vladimir Murzin Cc: Christoph Hellwig , Palmer Dabbelt , Damien Le Moal , linux-riscv@lists.infradead.org, uclinux-dev@uclinux.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 02/17] mm: stub out all of swapops.h for !CONFIG_MMU Message-ID: <20190611141841.GA29151@lst.de> References: <20190610221621.10938-1-hch@lst.de> <20190610221621.10938-3-hch@lst.de> <516c8def-22db-027c-873d-a943454e33af@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <516c8def-22db-027c-873d-a943454e33af@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) 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: On Tue, Jun 11, 2019 at 11:15:44AM +0100, Vladimir Murzin wrote: > On 6/10/19 11:16 PM, Christoph Hellwig wrote: > > The whole header file deals with swap entries and PTEs, none of which > > can exist for nommu builds. > > Although I agree with the patch, I'm wondering how you get into it? Without that the RISC-V nommu blows up like this: In file included from mm/vmscan.c:58: ./include/linux/swapops.h: In function ‘pte_to_swp_entry’: ./include/linux/swapops.h:71:15: error: implicit declaration of function ‘__pte_to_swp_entry’; did you mean ‘pte_to_swp_entry’? [-Werror=implicit-function-declaration] arch_entry = __pte_to_swp_entry(pte); ^~~~~~~~~~~~~~~~~~ pte_to_swp_entry ./include/linux/swapops.h:71:13: error: incompatible types when assigning to type ‘swp_entry_t’ {aka ‘struct ’} from type ‘int’ arch_entry = __pte_to_swp_entry(pte); ^ ./include/linux/swapops.h:72:19: error: implicit declaration of function ‘__swp_type’; did you mean ‘swp_type’? [-Werror=implicit-function-declaration] return swp_entry(__swp_type(arch_entry), __swp_offset(arch_entry)); ^~~~~~~~~~ swp_type ./include/linux/swapops.h:72:43: error: implicit declaration of function ‘__swp_offset’; did you mean ‘swp_offset’? [-Werror=implicit-function-declaration] return swp_entry(__swp_type(arch_entry), __swp_offset(arch_entry)); ^~~~~~~~~~~~ swp_offset ./include/linux/swapops.h: In function ‘swp_entry_to_pte’: ./include/linux/swapops.h:83:15: error: implicit declaration of function ‘__swp_entry’; did you mean ‘swp_entry’? [-Werror=implicit-function-declaration] arch_entry = __swp_entry(swp_type(entry), swp_offset(entry)); ^~~~~~~~~~~ swp_entry ./include/linux/swapops.h:83:13: error: incompatible types when assigning to type ‘swp_entry_t’ {aka ‘struct ’} from type ‘int’ arch_entry = __swp_entry(swp_type(entry), swp_offset(entry)); ^ ./include/linux/swapops.h:84:9: error: implicit declaration of function ‘__swp_entry_to_pte’; did you mean ‘swp_entry_to_pte’? [-Werror=implicit-function-declaration] return __swp_entry_to_pte(arch_entry); ^~~~~~~~~~~~~~~~~~ swp_entry_to_pte ./include/linux/swapops.h:84:9: error: incompatible types when returning type ‘int’ but ‘pte_t’ {aka ‘struct ’} was expected return __swp_entry_to_pte(arch_entry); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors make[1]: *** [scripts/Makefile.build:278: mm/vmscan.o] Error 1 make: *** [Makefile:1071: mm] Error 2 make: *** Waiting for unfinished jobs....