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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 46998C4332D for ; Fri, 20 Mar 2020 00:02:49 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 8AFD120409 for ; Fri, 20 Mar 2020 00:02:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="kiLnA4+H" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8AFD120409 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48k3r655xRzDrQs for ; Fri, 20 Mar 2020 11:02:46 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=geoff@infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20170209 header.b=kiLnA4+H; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48k3pK2cLpzDrN7 for ; Fri, 20 Mar 2020 11:01:13 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To: Subject:Sender:Reply-To:Content-ID:Content-Description; bh=vHZuTkIraH0j18C0yesq0h37iJWXExpW0+pRP9wHAFQ=; b=kiLnA4+HBazSxcmaF2vYSeDjTi GZySNj/qYjY7qWPGZkmvHOClubyAs6vb7qNyQfZbboMzJvAC4SHO+rElmWzJ0jHKOLMyU89vHKXK/ n1M8PZ7nzbZS/ryrjge0YuJsfT2QgYPpt2RAbDeongoVB9W/tMUNAm/+H2dBMRuDAuWrU0PwbnQ75 54EFHJNVY0SnoWPPNthdT3GTBbdGU8DxgXaRaLjrQZFGUO+ooZjTCdCB5e4iC3O2gyhwvHlCijgXg qdZtqnhJd8ufbtliHGhktsMMJQdKUHbLmcPLdZ0UbErD8gWdNNPnllI27n2u1y0WLcmNSdyDJUoWb Kec+VEjg==; Received: from 99-123-7-132.lightspeed.sntcca.sbcglobal.net ([99.123.7.132] helo=[192.168.1.71]) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jF562-0000eU-0Q; Fri, 20 Mar 2020 00:01:06 +0000 Subject: Re: [patch V2 07/15] powerpc/ps3: Convert half completion to rcuwait To: Sebastian Andrzej Siewior , Christoph Hellwig , Peter Zijlstra , Thomas Gleixner References: <20200318204302.693307984@linutronix.de> <20200318204408.102694393@linutronix.de> <20200319100459.GA18506@infradead.org> <20200319102613.hbwax7zrrvgcde4x@linutronix.de> From: Geoff Levand Message-ID: Date: Thu, 19 Mar 2020 17:01:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200319102613.hbwax7zrrvgcde4x@linutronix.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Randy Dunlap , Greg Kroah-Hartman , linux-pci@vger.kernel.org, LKML , Joel Fernandes , Will Deacon , Ingo Molnar , Davidlohr Bueso , "Paul E . McKenney" , Logan Gunthorpe , Arnd Bergmann , Steven Rostedt , Bjorn Helgaas , Kurt Schwemmer , Kalle Valo , Felipe Balbi , Linus Torvalds , linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, Oleg Nesterov , netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hi, On 3/19/20 3:26 AM, Sebastian Andrzej Siewior wrote: > On 2020-03-19 03:04:59 [-0700], Christoph Hellwig wrote: >> But I wonder how alive the whole PS3 support is to start with.. > > OtherOS can only be used on "old" PS3 which do not have have their > firmware upgraded past version 3.21, released April 1, 2010 [0]. > It was not possible to install OtherOS on PS3-slim and I don't remember > if it was a successor or a budget version (but it had lower power > consumption as per my memory). > *I* remember from back then that a few universities bought quite a few > of them and used them as a computation cluster. However, whatever broke > over the last 10 years is broken. > > [0] https://en.wikipedia.org/wiki/OtherOS There are still PS3-Linux users out there. They generally use firmware and other tools available through the 'hacker' communities that allow Linux to be run on more than just the 'officially supported' platforms. Anyway, the change to use rcuwait seems fine if that's needed for the completion re-work. I'll try to do some testing with the patch set next week. -Geoff