From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by sourceware.org (Postfix) with ESMTPS id 770E23858D3C for ; Thu, 16 Sep 2021 11:20:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 770E23858D3C Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: sourceware.org; spf=none smtp.mailfrom=infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Lp3jA41szRIjlWUCunPenP0SdzHXeXCnjtYe6378xi8=; b=Xk8xSr2n7befaTE6LAeWcL1WqU Jz2BRHkjUR3wUBJa/OV//UW1r0A2nDmpzP2yOhPr723F0tjbuy8Zv5OPsum/2rtcUoEkecxqIqW2z NCUi5M7vBeLfQcV2Nioy2Kmu6LM3rijM2EBtw6GrWUunyI/8mNUdZWOPMOa6I8UtTmP+acMKB3Zcq 8NrS4WlGo4WtaE+NuvV1Ao2RxsQM2u7EhaFTPr70aMAF5KOoRrOWy2T8B9JKvIOFzexsrQQV31Z73 9bOzi2Bm21e2zAorqVvZLyrkSTMgdBkyLiDJtA5K1uEQ9LNsuQ6DgfoCYAGkAn3uqp+vILjUpD0f5 9plkJwgA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mQpRQ-003daG-OA; Thu, 16 Sep 2021 11:20:33 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id E90EA3000A3; Thu, 16 Sep 2021 13:20:30 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id C5AA62CE72553; Thu, 16 Sep 2021 13:20:30 +0200 (CEST) Date: Thu, 16 Sep 2021 13:20:30 +0200 From: Peter Zijlstra To: Gabriel Krisman Bertazi Cc: =?iso-8859-1?Q?Andr=E9?= Almeida , Thomas Gleixner , Ingo Molnar , Darren Hart , linux-kernel@vger.kernel.org, Steven Rostedt , Sebastian Andrzej Siewior , kernel@collabora.com, linux-api@vger.kernel.org, libc-alpha@sourceware.org, mtk.manpages@gmail.com, Davidlohr Bueso , Arnd Bergmann Subject: Re: [PATCH v3 2/6] futex2: Implement vectorized wait Message-ID: References: <20210913175249.81074-1-andrealmeid@collabora.com> <20210913175249.81074-3-andrealmeid@collabora.com> <875yv4ge83.fsf@collabora.com> <58536544-e032-1954-ce30-d131869dc95e@collabora.com> <8735q5dutq.fsf@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8735q5dutq.fsf@collabora.com> X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Sep 2021 11:20:44 -0000 On Thu, Sep 16, 2021 at 12:10:25AM -0400, Gabriel Krisman Bertazi wrote: > I find this weird. I'm not even juts talking about compat, but even on > native 32-bit. But also, 32 applications on 64, which is a big use > case for games. Seriously, people still make 32bit applications today? And for legacy games, I would think the speed increase of modern CPUs would far offset this little inefficiency.