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 DD13EC4332B for ; Mon, 23 Mar 2020 11:19:41 +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 A33B120663 for ; Mon, 23 Mar 2020 11:19:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="EwYSdz8Z" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A33B120663 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]:60336 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jGL7M-0001Ze-Qv for qemu-devel@archiver.kernel.org; Mon, 23 Mar 2020 07:19:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41167) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jGL6n-0001B9-Le for qemu-devel@nongnu.org; Mon, 23 Mar 2020 07:19:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jGL6m-0001XB-Jc for qemu-devel@nongnu.org; Mon, 23 Mar 2020 07:19:05 -0400 Received: from us-smtp-delivery-74.mimecast.com ([216.205.24.74]:58743) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jGL6m-0001X3-FU for qemu-devel@nongnu.org; Mon, 23 Mar 2020 07:19:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584962344; 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=I6iz++xDyWIMkLvemm1M+2robOQPUjlgI3SUvSgLd7o=; b=EwYSdz8ZWZEGk5SgUgcUVDnEav+YQaHvMqO/s+Ap8N+K/wTAW4rSEGspaYFEewLutvc/5S Wvk6UWQ84vFcZMmB4XdOJcrTsV+BBMWX7Dyvt8xxeSw315PplQDRjXEqtwHm+5waO5w6aX EwaUv2S3V7MAhETVzrMCAolPM0p2pOI= 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-462-dywiY5z6ONeRnMNNQgVxNg-1; Mon, 23 Mar 2020 07:17:57 -0400 X-MC-Unique: dywiY5z6ONeRnMNNQgVxNg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6420010CE78A; Mon, 23 Mar 2020 11:17:56 +0000 (UTC) Received: from fuller.cnet (ovpn-116-9.gru2.redhat.com [10.97.116.9]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D9B3810027AF; Mon, 23 Mar 2020 11:17:52 +0000 (UTC) Received: by fuller.cnet (Postfix, from userid 1000) id 7EE8F418CC0C; Mon, 23 Mar 2020 08:04:52 -0300 (-03) Date: Mon, 23 Mar 2020 08:04:52 -0300 From: Marcelo Tosatti To: Paolo Bonzini Subject: Re: [PATCH-for-5.0 1/2] hw/acpi/piix4: Add 'system-hotplug-support' property Message-ID: <20200323110452.GA14031@fuller.cnet> References: <20200318221531.22910-1-philmd@redhat.com> <20200318221531.22910-2-philmd@redhat.com> <20200319114424.5723e777@office.mammed.net> <4d42697e-ba84-e5af-3a17-a2cc52cf0dbc@redhat.com> <20200319160800.614de5fb@redhat.com> <3f70d63d-e9ae-6676-edd5-20613b4b8856@redhat.com> MIME-Version: 1.0 In-Reply-To: <3f70d63d-e9ae-6676-edd5-20613b4b8856@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 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: Eduardo Habkost , "Michael S. Tsirkin" , qemu-devel@nongnu.org, Aleksandar Markovic , =?iso-8859-1?Q?Herv=E9?= Poussineau , Igor Mammedov , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Mar 23, 2020 at 09:05:06AM +0100, Paolo Bonzini wrote: > On 22/03/20 17:27, Philippe Mathieu-Daud=E9 wrote: > >>> > >> That 'ugly' is typically used within QEMU to deal with such things > >> probably due to its low complexity. > >=20 > > OK. Can you point me to the documentation for this feature? I can find > > reference of GPE in the ICH9, but I can't find where this IO address on > > the PIIX4 comes from: > >=20 > > #define GPE_BASE 0xafe0 >=20 > It's made up. The implementation is placed in PIIX4_PM because it is > referenced by the ACPI tables. Real hardware would probably place this > in the ACPI embedded controller or in the BMC. >=20 > Paolo Yes, there was nothing at 0xafe0 at the time ACPI support was written.