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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 84385FD2D9C for ; Tue, 10 Mar 2026 14:00:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=KBtM6FHB1Hg+j/uC6YjMuSNyq8zYoksAvnYz45W3iLo=; b=OnvD8k8+GBXBMnXHgFME+vW8JK vBrQzbBPPrT27FrcJs0ALRjoeh7qpdWOmIw+U+j7q+dzQC79hChhtPvpHN6E6cGOa46DZLqlXhr/a SCS65bN7D/X7vfoHBjLsPz4bw0HeBkwftMZZ65ibnDk08sCFtY/a67G3bbzNQ8jlRJ0nYrdNuw0QB meFVRzuuRhYsgk106781K0tsxGD2Y/cwzxLJ2az2uB8+pkfGcgfeo7jg2b+BeL0wQFaSEhbtEDREF YrA82PQpQzz9qsbksMUh0XWiO6hmeuBrcGbvR+jjAk4BhHcOXieOmilNDdLnC0K4PWT6+xjfQlIb7 Pe6Q1VmQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vzxdU-00000009eBg-2mSY; Tue, 10 Mar 2026 14:00:36 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vzxdR-00000009eB4-0oRA; Tue, 10 Mar 2026 14:00:34 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 9EFDD68C4E; Tue, 10 Mar 2026 15:00:21 +0100 (CET) Date: Tue, 10 Mar 2026 15:00:20 +0100 From: Christoph Hellwig To: Eric Biggers Cc: Christoph Hellwig , Andrew Morton , Richard Henderson , Matt Turner , Magnus Lindholm , Russell King , Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "David S. Miller" , Andreas Larsson , Richard Weinberger , Anton Ivanov , Johannes Berg , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Herbert Xu , Dan Williams , Chris Mason , David Sterba , Arnd Bergmann , Song Liu , Yu Kuai , Li Nan , linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-crypto@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-arch@vger.kernel.org, linux-raid@vger.kernel.org Subject: Re: [PATCH 09/25] xor: move generic implementations out of asm-generic/xor.h Message-ID: <20260310140020.GA8490@lst.de> References: <20260226151106.144735-1-hch@lst.de> <20260226151106.144735-10-hch@lst.de> <20260228071521.GK65277@quark> <20260303160911.GI7021@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260303160911.GI7021@lst.de> 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-20260310_070033_376541_C91BEA33 X-CRM114-Status: GOOD ( 13.93 ) X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Tue, Mar 03, 2026 at 05:09:11PM +0100, Christoph Hellwig wrote: > And earlier version did this, but it's a bit ugly. What I might > consider is to require architectures that provide optimized version > to opt into any generic one they want to use. This would require > extra kconfig symbols, but be a lot cleaner overall. I looked into this, but because the static_call requires a default version I gave up on it for now. In theory we could build just a single generic one for that and make the others optional, but that feels a bit odd.