From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:37658) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmwq8-00075s-Dc for qemu-devel@nongnu.org; Fri, 25 Jan 2019 03:27:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gmwoV-0003nE-RP for qemu-devel@nongnu.org; Fri, 25 Jan 2019 03:26:12 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45976) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gmwoV-0003mI-La for qemu-devel@nongnu.org; Fri, 25 Jan 2019 03:26:11 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 5AE377BDCA for ; Fri, 25 Jan 2019 08:26:10 +0000 (UTC) Date: Fri, 25 Jan 2019 09:26:05 +0100 From: Igor Mammedov Message-ID: <20190125092605.2d40dce8@redhat.com> In-Reply-To: <20190123182858.GG2193@work-vm> References: <20190122200740.GC2241@work-vm> <20190122215941-mutt-send-email-mst@kernel.org> <20190123182858.GG2193@work-vm> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] of apci_1_compatible in CPUHotplugFeatures List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" Cc: "Michael S. Tsirkin" , qemu-devel@nongnu.org On Wed, 23 Jan 2019 18:28:59 +0000 "Dr. David Alan Gilbert" wrote: > * Michael S. Tsirkin (mst@redhat.com) wrote: > > On Tue, Jan 22, 2019 at 08:07:41PM +0000, Dr. David Alan Gilbert wrote: > > > Hi, > > > I noticed that the acpi_1_compatible flag was misspelt as > > > apci_1_compatible > > > > > > so have a trivial patch to fix that, pls post it. > > > but looking at it - are > > > thre any cases where a[cp]i_1_compatible can possibly be false? ATM it's not possible, but I've wrote it with intent to reuse build_cpus_aml() in arm/virt board and there we shall use newer aml_device() instead of legacy aml_processor(), hence a feature flag to toggle behavior. > > > > > > Dave > > > > legacy_cpu_hotplug so machine 2.6 and older - no? > > That doesn't seem to affect that flag by my reading; > the only place I see legacy_cpu_hotplug checked is > acpi-build.c:build_dsdt and we have: > > if (pcmc->legacy_cpu_hotplug) { > build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); > } else { > CPUHotplugFeatures opts = { > .acpi_1_compatible = true, .has_legacy_cphp = true > }; > build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base, > "\\_SB.PCI0", "\\_GPE._E02"); > } > > so the 'opts' field is only used in the non-legacy case. > > That's the only caller of build_cpus_aml, and I'm not seeing another > user of CPUHotplugFeatures. > > Dave > > > > -- > > > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK > -- > Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK