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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 00B9BC07E95 for ; Tue, 13 Jul 2021 08:01:11 +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 9927C60BD3 for ; Tue, 13 Jul 2021 08:01:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9927C60BD3 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]:43362 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m3DLp-0000UD-Nx for qemu-devel@archiver.kernel.org; Tue, 13 Jul 2021 04:01:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36330) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m3DKa-00088A-T3 for qemu-devel@nongnu.org; Tue, 13 Jul 2021 03:59:52 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:22029) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m3DKX-0002Zo-TH for qemu-devel@nongnu.org; Tue, 13 Jul 2021 03:59:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626163187; 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=qOBj8/hqvY/Rkt0+TuojCwl69M5srQjaSHf++d57ykM=; b=WMnqhJgV8FTs2jnrdP/KYBMfyWkpM4zq6UM6Ora25FWB9ng1Rnq+I4Uk1G6EhmUrP+K/69 WcPnZyVifVp2/1wds8kTquTX04uR3egd0NhRysy6gl2K0eM31l1XYJ6zqpc2bM7N9ERjHE bnvHAQGLplGN/6fLrpj7pp//JegToHg= 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-429-ZYuQV99dPO6BBCShLvm_ow-1; Tue, 13 Jul 2021 03:59:46 -0400 X-MC-Unique: ZYuQV99dPO6BBCShLvm_ow-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2B5821084F55; Tue, 13 Jul 2021 07:59:45 +0000 (UTC) Received: from localhost (unknown [10.43.2.75]) by smtp.corp.redhat.com (Postfix) with ESMTP id 282165C232; Tue, 13 Jul 2021 07:59:32 +0000 (UTC) Date: Tue, 13 Jul 2021 09:59:31 +0200 From: Igor Mammedov To: Julia Suvorova Subject: Re: [PATCH v6 5/6] hw/acpi/ich9: Set ACPI PCI hot-plug as default on Q35 Message-ID: <20210713095931.61fa1281@redhat.com> In-Reply-To: <20210713004205.775386-6-jusual@redhat.com> References: <20210713004205.775386-1-jusual@redhat.com> <20210713004205.775386-6-jusual@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: David Gibson , qemu-devel@nongnu.org, "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, 13 Jul 2021 02:42:04 +0200 Julia Suvorova wrote: > Q35 has three different types of PCI devices hot-plug: PCIe Native, > SHPC Native and ACPI hot-plug. This patch changes the default choice > for cold-plugged bridges from PCIe Native to ACPI Hot-plug with > ability to use SHPC and PCIe Native for hot-plugged bridges. Before we flip the switch, has the issue about not hotplug ports not getting IO (Michael) been addressed, if not are there any plans to fix it? > This is a list of the PCIe Native hot-plug issues that led to this > change: > * no racy behavior during boot (see 110c477c2ed) > * no delay during deleting - after the actual power off software > must wait at least 1 second before indicating about it. This case > is quite important for users, it even has its own bug: > https://bugzilla.redhat.com/show_bug.cgi?id=1594168 > * no timer-based behavior - in addition to the previous example, > the attention button has a 5-second waiting period, during which > the operation can be canceled with a second press. While this > looks fine for manual button control, automation will result in > the need to queue or drop events, and the software receiving > events in all sort of unspecified combinations of attention/power > indicator states, which is racy and uppredictable. > * fixes: > * https://bugzilla.redhat.com/show_bug.cgi?id=1752465 > * https://bugzilla.redhat.com/show_bug.cgi?id=1690256 > > To return to PCIe Native hot-plug: > -global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off > > Signed-off-by: Julia Suvorova > Reviewed-by: Igor Mammedov > --- > hw/acpi/ich9.c | 2 +- > hw/i386/pc.c | 1 + > 2 files changed, 2 insertions(+), 1 deletion(-) > > diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c > index 2f4eb453ac..778e27b659 100644 > --- a/hw/acpi/ich9.c > +++ b/hw/acpi/ich9.c > @@ -427,7 +427,7 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm) > pm->disable_s3 = 0; > pm->disable_s4 = 0; > pm->s4_val = 2; > - pm->use_acpi_hotplug_bridge = false; > + pm->use_acpi_hotplug_bridge = true; > > object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE, > &pm->pm_io_base, OBJ_PROP_FLAG_READ); > diff --git a/hw/i386/pc.c b/hw/i386/pc.c > index 8e1220db72..7e03848792 100644 > --- a/hw/i386/pc.c > +++ b/hw/i386/pc.c > @@ -98,6 +98,7 @@ GlobalProperty pc_compat_6_0[] = { > { "qemu64" "-" TYPE_X86_CPU, "family", "6" }, > { "qemu64" "-" TYPE_X86_CPU, "model", "6" }, > { "qemu64" "-" TYPE_X86_CPU, "stepping", "3" }, > + { "ICH9-LPC", "acpi-pci-hotplug-with-bridge-support", "off" }, > }; > const size_t pc_compat_6_0_len = G_N_ELEMENTS(pc_compat_6_0); >