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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 E05DAC3F2D1 for ; Fri, 28 Feb 2020 10:37:17 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 AB934246A8 for ; Fri, 28 Feb 2020 10:37:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LGPG710a" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB934246A8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45130 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7d1A-0002Mv-Rq for qemu-devel@archiver.kernel.org; Fri, 28 Feb 2020 05:37:16 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60840) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7d0D-0000sp-V3 for qemu-devel@nongnu.org; Fri, 28 Feb 2020 05:36:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j7d0D-0000go-2F for qemu-devel@nongnu.org; Fri, 28 Feb 2020 05:36:17 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:25338 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j7d0C-0000ga-U1 for qemu-devel@nongnu.org; Fri, 28 Feb 2020 05:36:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582886176; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wNiFe36+jSHVeUnFxzHb1i9e4NrNPl5lb1ru4bjCy34=; b=LGPG710adixfYNWJndRxrawa7z5cLHUztEJz4PHJJxpdZBPuyhEN4zeQbEG30QXZIsCSZ9 3ur8UXAJl9frkXTBDhDtL18/tgJhwIdhHu0KRjbC7sWXgjhQUbPgE5onr9XFKCw4V3F29b pAaDeKt2NB798MTWg2kzQITQTvO0AMc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-12-Y7IKc1eaOTq2eycO8iYt9A-1; Fri, 28 Feb 2020 05:36:14 -0500 X-MC-Unique: Y7IKc1eaOTq2eycO8iYt9A-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CFFC38024CF for ; Fri, 28 Feb 2020 10:36:13 +0000 (UTC) Received: from [10.36.116.59] (ovpn-116-59.ams2.redhat.com [10.36.116.59]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1CFF11CB; Fri, 28 Feb 2020 10:36:06 +0000 (UTC) Subject: Re: [PATCH v1.1 4/5] KVM: Kick resamplefd for split kernel irqchip To: Paolo Bonzini , Peter Xu References: <20200227170048.236599-1-peterx@redhat.com> <5e69c385-b27c-61d4-5856-21bcf5e9c8f5@redhat.com> <20200227180003.GJ180973@xz-x1> <2852480c-89fe-4c4e-75be-7322592976b6@redhat.com> <20200227191900.GK180973@xz-x1> <8ab9ccaa-7060-9e90-d4a9-a9de32610381@redhat.com> <8c3e3f25-b20e-08bd-fa1e-f307fe7f02a4@redhat.com> From: Auger Eric Message-ID: <7851fc72-6001-25d3-8b17-f6fda827ea74@redhat.com> Date: Fri, 28 Feb 2020 11:36:05 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <8c3e3f25-b20e-08bd-fa1e-f307fe7f02a4@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alex Williamson , Cornelia Huck , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Paolo, On 2/28/20 11:34 AM, Paolo Bonzini wrote: > On 27/02/20 22:14, Auger Eric wrote: >>> Yes KVM kernel side should not be involed when we're using split >>> irqchip in this case. However it should still belongs to the work of >>> the userspace KVM module (kvm-all.c) so that it can still "mimic" the >>> resamplefd feature that KVM_IRQFD provides. >> OK. So that what my actual question. Should this be handled by kvm-all.c? > > I think it should; kvm-all.c in this case is providing the API to enable > irqfds (including resamplefds). > > You could have a generic file descriptor<->interrupt routing subsystem, > but for now that only exists for KVM so that's where Peter's code need > to go. OK Thanks Eric > > Paolo >