From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zytor.com (terminus.zytor.com [198.137.202.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2ADA8199EBB; Wed, 26 Feb 2025 01:39:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.136 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740533965; cv=none; b=dOS7CTBjYzn+yCHcmpCBbAEWgHwdDiut8P9lzBSIdmKIRhE3Jcw1vBhOyyWdThHRE3Di2qQBT2ogsddVZN8E1OLjo7QxV4L14cw6WjK4VEOBKhhh+rhmaA6/NmeJ+vb+UvrEjlKEJqEcml8/RIfTViOEWDb9KolQJmQVYnvzsbY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740533965; c=relaxed/simple; bh=T0pKCclIvHKyDRUHCJs7P4mfoEs4SIcJGp6SSmwXCZc=; h=Date:From:To:CC:Subject:In-Reply-To:References:Message-ID: MIME-Version:Content-Type; b=l8J0kNGUdlNTI1ROnga+P6ZKjzmHhtm58VmT54d4SFKrvZU49bRDqNtemU45s5igZsN4W+2YCm/fWU+ZQxWPJkU6w+BBhKfe2BTTNqpbEch4mrZ3A8HI2hHEkvprDT9dTgg/v+rb7mZXyzYdNsH8WteQCCz82zAavl5g4EZDm0M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com; spf=pass smtp.mailfrom=zytor.com; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b=DSr0p5U6; arc=none smtp.client-ip=198.137.202.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zytor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="DSr0p5U6" Received: from [127.0.0.1] ([76.133.66.138]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 51Q1ZSdu1502812 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Tue, 25 Feb 2025 17:35:29 -0800 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 51Q1ZSdu1502812 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2025021701; t=1740533740; bh=T0pKCclIvHKyDRUHCJs7P4mfoEs4SIcJGp6SSmwXCZc=; h=Date:From:To:CC:Subject:In-Reply-To:References:From; b=DSr0p5U6PuFacB2sJlJBShpK+caegDMEmn8OYplTp/ukKNtEFfrkn97ga+OT2dXpz K/n5OJZ9p7wF026A4N5Ms8I4Ha7wXxIE31o+eevCv66LWleUk5egaKa/T1wzR+OiP5 pBftNRMbRUke7ubIKWI6Trw88YIoPJ//UlgWSqbBalJrMQ6XLeWdsBqjIBFJ2BqBTU NxN3soIqU4psmCdpeI68cUVCZ/T8YSni/GX+FUYtyTt8DqQzRz5FBJx8rRSkQsq+0n LFOV9xO0DwzRQLOdgcR413cBdNqea/GHzmtBr2NpUvBJ8KgVfK7MCUU4fZDlrEdXny PWA/+ls6AlysA== Date: Tue, 25 Feb 2025 17:35:26 -0800 From: "H. Peter Anvin" To: Andrew Cooper CC: Laurent.pinchart@ideasonboard.com, airlied@gmail.com, akpm@linux-foundation.org, alistair@popple.id.au, andrew+netdev@lunn.ch, andrzej.hajda@intel.com, arend.vanspriel@broadcom.com, awalls@md.metrocast.net, bp@alien8.de, bpf@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, brcm80211@lists.linux.dev, dave.hansen@linux.intel.com, davem@davemloft.net, david.laight.linux@gmail.com, dmitry.torokhov@gmail.com, dri-devel@lists.freedesktop.org, eajames@linux.ibm.com, edumazet@google.com, eleanor15x@gmail.com, gregkh@linuxfoundation.org, hverkuil@xs4all.nl, jernej.skrabec@gmail.com, jirislaby@kernel.org, jk@ozlabs.org, joel@jms.id.au, johannes@sipsolutions.net, jonas@kwiboo.se, jserv@ccns.ncku.edu.tw, kuba@kernel.org, linux-fsi@lists.ozlabs.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mtd@lists.infradead.org, linux-serial@vger.kernel.org, linux-wireless@vger.kernel.org, linux@rasmusvillemoes.dk, louis.peens@corigine.com, maarten.lankhorst@linux.intel.com, mchehab@kernel.org, mingo@redhat.com, miquel.raynal@bootlin.com, mripard@kernel.org, neil.armstrong@linaro.org, netdev@vger.kernel.org, oss-drivers@corigine.com, pabeni@redhat.com, parthiban.veerasooran@microchip.com, rfoss@kernel.org, richard@nod.at, simona@ffwll.ch, tglx@linutronix.de, tzimmermann@suse.de, vigneshr@ti.com, visitorckw@gmail.com, x86@kernel.org, yury.norov@gmail.com Subject: Re: [PATCH 02/17] bitops: Add generic parity calculation for u64 User-Agent: K-9 Mail for Android In-Reply-To: <8052b316-9f72-42c7-9e11-e23e690d80c4@citrix.com> References: <3BC57C78-1DFF-4B83-85AA-A908DBF2B958@zytor.com> <8052b316-9f72-42c7-9e11-e23e690d80c4@citrix.com> Message-ID: <4259A207-7B5F-4D25-A8AE-144D24554201@zytor.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On February 25, 2025 1:43:27 PM PST, Andrew Cooper wrote: >> Incidentally, in all of this, didn't anyone notice __builtin_parity()? > >Yes=2E=C2=A0 It it has done sane for a decade on x86, yet does things suc= h as >emitting a library call on other architectures=2E > >https://godbolt=2Eorg/z/6qG3noebq > >~Andrew And not even a smart one at that=2E