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=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=ham 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 E03CAC433DF for ; Sat, 10 Oct 2020 10:21:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C0682078B for ; Sat, 10 Oct 2020 10:21:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="am5bVJGW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729173AbgJJKUd (ORCPT ); Sat, 10 Oct 2020 06:20:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726720AbgJJKQH (ORCPT ); Sat, 10 Oct 2020 06:16:07 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CBD0C0613E6; Sat, 10 Oct 2020 03:06:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=GHZDtUt4W1bVB/qw218w/S2pc/jqhfdX3ImjBozjRww=; b=am5bVJGWF2zRpCBtu2kTilOYGh EancgJ/SLTMQ9DUQkgCZa1Rg8gOkzj60wIe2JiW/K0jouAYqa01fOfmiyO3NpbdyeWgRvoxZhdIMW i13hnOPauDl0syhKGE4biOhjX8SOHcFPRaYWF4QKybWoMYUJXFiQ2r/qFhffx4ueAPe8IKXtoD9uf p/Z32V/H4NXzm4uSDp4z8ueE0b9jc8UrPH8yHH5r+eUS4NGxb8/MVT6g2RtvLKB7vho6WsMM0L+lY Gtz1hTVBQIZeYf10SF1iDYOiEcEhLLDUDGH+aR1iQ/noW4/9YQC85pPyBKgXXHarxX3Wxa0hJ6zNh z4VagU1g==; Received: from dyn-229.woodhou.se ([90.155.92.229] helo=u3832b3a9db3152.infradead.org) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kRBlq-0007Ev-MP; Sat, 10 Oct 2020 10:06:34 +0000 Message-ID: <958f0d5c9844f94f2ce47a762c5453329b9e737e.camel@infradead.org> Subject: Re: [PATCH 5/5] x86/kvm: Add KVM_FEATURE_MSI_EXT_DEST_ID From: David Woodhouse To: Thomas Gleixner , x86@kernel.org Cc: kvm , Paolo Bonzini , linux-kernel Date: Sat, 10 Oct 2020 11:06:32 +0100 In-Reply-To: <87tuv4uwmt.fsf@nanos.tec.linutronix.de> References: <803bb6b2212e65c568c84ff6882c2aa8a0ee03d5.camel@infradead.org> <20201007122046.1113577-1-dwmw2@infradead.org> <20201007122046.1113577-5-dwmw2@infradead.org> <87blhcx6qz.fsf@nanos.tec.linutronix.de> <95625dfce360756b99641c31212634c1bf80a69a.camel@infradead.org> <87362owhcb.fsf@nanos.tec.linutronix.de> <87tuv4uwmt.fsf@nanos.tec.linutronix.de> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-CVnF36jvfens/1iyj624" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-CVnF36jvfens/1iyj624 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2020-10-09 at 01:27 +0200, Thomas Gleixner wrote: > On Thu, Oct 08 2020 at 22:39, David Woodhouse wrote: > > On Thu, 2020-10-08 at 23:14 +0200, Thomas Gleixner wrote: > > > >=20 > > > > (We'd want the x86_vector_domain to actually have an MSI compose > > > > function in the !CONFIG_PCI_MSI case if we did this, of course.) > > >=20 > > > The compose function and the vector domain wrapper can simply move to > > > vector.c > >=20 > > I ended up putting __irq_msi_compose_msg() into apic.c and that way I > > can make virt_ext_dest_id static in that file. > >=20 > > And then I can move all the HPET-MSI support into hpet.c too. >=20 > Works for me. >=20 > > https://git.infradead.org/users/dwmw2/linux.git/shortlog/refs/heads/ext= _dest_id >=20 > For the next submission, can you please >=20 > - pick up the -ENODEV changes for HPET/IOAPIC which I posted earlier I think the world will be a nicer place if HPET and IOAPIC have their own struct device and their drivers can just use dev_get_msi_domain(). The IRQ remapping drivers already plug into the device-add notifier and can fill in the appropriate MSI domain just like they do=C2=B9 for PCI and ACPI devices. Using platform_add_bundle() for HPET looks trivial enough; I'll have a play with that and then do IOAPIC too if/when the initialisation order and hotplug handling all works out OK to install the correct msi_domain. --=20 dwmw2 =C2=B9 Yeah, I know they don't do it directly; it's done in=20 pcibios_add_device(). But maybe they should? 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