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bh=LydjRcQkwKxDXpkiwx7P7o26eHyHbd6vqGPrX8nVJac=; b=hOLa3/X53jgW6MWDSCtfgZRM03/8kTi0YqDsfy6Tu9/U/Fs9aUsLjg+M4Ft+6cK72iHEaM qB7k3JaS+7kZGXXIZPW4dnTM1SBxLItPdtBLx7NMd4jWE26VW4/qbu8fPiiIkGRIkhtbI3 TuCpLHzh38uv/Mz4DF1QREQcS8bQJ8M= 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-435-hLIGlAApMiSLEnShaI7svw-1; Fri, 23 Jul 2021 04:50:18 -0400 X-MC-Unique: hLIGlAApMiSLEnShaI7svw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 88CCC92502; Fri, 23 Jul 2021 08:50:17 +0000 (UTC) Received: from redhat.com (ovpn-114-245.ams2.redhat.com [10.36.114.245]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 286AD26DEC; Fri, 23 Jul 2021 08:50:03 +0000 (UTC) Date: Fri, 23 Jul 2021 09:50:00 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Igor Mammedov Subject: Re: [PATCH 2/2] acpi: x86: pcihp: add support hotplug on multifunction bridges Message-ID: References: <20210722105945.2080428-1-imammedo@redhat.com> <20210722105945.2080428-3-imammedo@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210722105945.2080428-3-imammedo@redhat.com> User-Agent: Mutt/2.0.7 (2021-05-04) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.472, 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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: Laurent Vivier , peter.maydell@linaro.org, jusual@redhat.com, qemu-devel@nongnu.org, mst@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Jul 22, 2021 at 06:59:45AM -0400, Igor Mammedov wrote: > Commit 17858a1695 (hw/acpi/ich9: Set ACPI PCI hot-plug as default on Q35) > switched PCI hotplug from native to ACPI one by default. > > That however breaks ihotplug on following CLI that used to work: s/ihotplug/hotplug/ > -nodefaults -machine q35 \ > -device pcie-root-port,id=pcie-root-port-0,multifunction=on,bus=pcie.0,addr=0x1,chassis=1 \ > -device pcie-root-port,id=pcie-root-port-1,port=0x1,addr=0x1.0x1,bus=pcie.0,chassis=2 > > where PCI device is hotplugged to pcie-root-port-1 with error on guest side: > > ACPI BIOS Error (bug): Could not resolve symbol [^S0B.PCNT], AE_NOT_FOUND (20201113/psargs-330) > ACPI Error: Aborting method \_SB.PCI0.PCNT due to previous error (AE_NOT_FOUND) (20201113/psparse-531) > ACPI Error: Aborting method \_GPE._E01 due to previous error (AE_NOT_FOUND) (20201113/psparse-531) > ACPI Error: AE_NOT_FOUND, while evaluating GPE method [_E01] (20201113/evgpe-515) > > cause is that QEMU's ACPI hotplug never supported functions other then 0 > and due to bug it was generating notification entries for not described > functions. > > Technically there is no reason not to describe cold-plugged bridges > (root ports) on functions other then 0, as they similaraly to bridge s/similaraly/similarly/ > on function 0 are unpluggable. > > Fix consists of describing cold-plugged bridges[root ports] on functions > other than 0. > > Fixes: 17858a169508609ca9063c544833e5a1adeb7b52 > Signed-off-by: Igor Mammedov > Reported-by: Laurent Vivier Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|