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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 C8DD5C55ABD for ; Tue, 10 Nov 2020 14:42:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7240A20809 for ; Tue, 10 Nov 2020 14:42:15 +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="mZ0oOKzH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730511AbgKJOmM (ORCPT ); Tue, 10 Nov 2020 09:42:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730059AbgKJOmL (ORCPT ); Tue, 10 Nov 2020 09:42:11 -0500 Received: from twosheds.infradead.org (twosheds.infradead.org [IPv6:2001:8b0:10b:1:21d:7dff:fe04:dbe2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D56C1C0613CF; Tue, 10 Nov 2020 06:42:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=twosheds.20170209; h=Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:To:From:Subject:Date:References:In-Reply-To: Message-ID:Sender:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=0dwxESZhE6qS0tRQVz8GERHRJWul6w0ygr/xjcdQRuo=; b=mZ0oOKzHKaYt5WTaP1PaQHA31 hJGt7ocnCK64bHABuSiLoI8hM12VVmUFEK8fMQgljLzb9F59hV65Yh5RJrPUF6WSwpcZZay6vVckf 5jFfVUBJY7+dbA4hix2kHzk49frDVnm/1Dyd2BbNruEvlV6+kZE2xvghEzd6G8HwJzYrWuEQzBLYM KsoA/q6laDk4xYgXSR5gRc1NFrYS1StLyRtXqSsY/DYwvjlnEK3yPDC1UQ0IYlzOUGoSjOBVFSgrz 0vNdgd6lUIbXyflZPkrGx5B3HA5Gnyva/dZYHpHDnvr5P3cliTG4acFvyFJSYjyh99+8B/PRkqiGI 93+pqJqqA==; Received: from localhost ([127.0.0.1] helo=twosheds.infradead.org) by twosheds.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcUpw-00DNR9-Tz; Tue, 10 Nov 2020 14:41:33 +0000 Received: from 2a01:4c8:1444:cb4a:7550:3916:282:2b3a (SquirrelMail authenticated user dwmw2) by twosheds.infradead.org with HTTP; Tue, 10 Nov 2020 14:41:33 -0000 Message-ID: <9d35d5ea113b4d917c1560906445a811.squirrel@twosheds.infradead.org> In-Reply-To: <20201110141928.GC22336@otc-nc-03> References: <20201104135415.GX2620339@nvidia.com> <20201106131415.GT2620339@nvidia.com> <20201106164850.GA85879@otc-nc-03> <20201106175131.GW2620339@nvidia.com> <20201107001207.GA2620339@nvidia.com> <20201108181124.GA28173@araj-mobl1.jf.intel.com> <20da76a4cd2e984a307d673e26f76ab73bd820f4.camel@infradead.org> <20201108232557.GA32074@araj-mobl1.jf.intel.com> <20201110141928.GC22336@otc-nc-03> Date: Tue, 10 Nov 2020 14:41:33 -0000 Subject: Re: [PATCH v4 06/17] PCI: add SIOV and IMS capability detection From: "David Woodhouse" To: "Raj, Ashok" Cc: "David Woodhouse" , "Jason Gunthorpe" , "Dan Williams" , "Tian, Kevin" , "Jiang, Dave" , "Bjorn Helgaas" , "vkoul@kernel.org" , "Dey, Megha" , "maz@kernel.org" , "bhelgaas@google.com" , "tglx@linutronix.de" , "alex.williamson@redhat.com" , "Pan, Jacob jun" , "Liu, Yi L" , "Lu, Baolu" , "Kumar, Sanjay K" , "Luck, Tony" , "jing.lin@intel.com" , "kwankhede@nvidia.com" , "eric.auger@redhat.com" , "parav@mellanox.com" , "rafael@kernel.org" , "netanelg@mellanox.com" , "shahafs@mellanox.com" , "yan.y.zhao@linux.intel.com" , "pbonzini@redhat.com" , "Ortiz, Samuel" , "Hossain, Mona" , "dmaengine@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "kvm@vger.kernel.org" User-Agent: SquirrelMail/1.4.23 [SVN]-1.fc30.20190710 MIME-Version: 1.0 Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-SRS-Rewrite: SMTP reverse-path rewritten from by twosheds.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org > Hi David > > I did't follow the support for 32768 CPUs in guest without IR support. > > Can you tell me how that is done? Using bits 11-5 of the MSI address bits (the other 7 bits of "Extended Destination ID" that aren't the Remappable Format indicator). And physical addressing mode, which is no loss for external interrupts since they're all unicast dest_Fixed these days anyway. -- dwmw2