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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 9DAC7C4360C for ; Tue, 8 Oct 2019 10:55:58 +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 72F73205C9 for ; Tue, 8 Oct 2019 10:55:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72F73205C9 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]:53620 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iHn9o-0003j5-Dd for qemu-devel@archiver.kernel.org; Tue, 08 Oct 2019 06:55:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46594) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iHn7P-0001re-A7 for qemu-devel@nongnu.org; Tue, 08 Oct 2019 06:53:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iHn7M-0003k2-Qv for qemu-devel@nongnu.org; Tue, 08 Oct 2019 06:53:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:17157) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iHn7M-0003hm-Lf for qemu-devel@nongnu.org; Tue, 08 Oct 2019 06:53:24 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A1CAF9AE9C; Tue, 8 Oct 2019 10:53:22 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-120-109.rdu2.redhat.com [10.10.120.109]) by smtp.corp.redhat.com (Postfix) with ESMTP id D2C455D9C9; Tue, 8 Oct 2019 10:53:01 +0000 (UTC) From: Laszlo Ersek To: qemu devel list Subject: [PATCH 0/4] hw/i386: pass "MachineState.smp.max_cpus" to OVMF Date: Tue, 8 Oct 2019 12:52:55 +0200 Message-Id: <20191008105259.5378-1-lersek@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Tue, 08 Oct 2019 10:53:22 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 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" , Gerd Hoffmann , Paolo Bonzini , Igor Mammedov , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" https://bugzilla.tianocore.org/show_bug.cgi?id=3D1515 For enabling VCPU hotplug with OVMF, OVMF needs to know the value of "max_cpus". This quantity is not passed to the firmware currently -- SeaBIOS receives the (exclusive) maximum APICID, which is not useful to OVMF --, so introduce a new fw_cfg file for this purpose. Note: when OVMF is built with -D SMM_REQUIRE, this patch series is just a small building block, towards the full VCPU hotplug feature. However, when OVMF is built without -D SMM_REQUIRE, this series (together with the counterpart patch set for OVMF) completes the VCPU hotplug feature: it allows S3 resume to work with VCPUs hot-plugged previously (at OS runtime, of course). Cc: "Michael S. Tsirkin" Cc: Eduardo Habkost Cc: Gerd Hoffmann Cc: Igor Mammedov Cc: Marcel Apfelbaum Cc: Paolo Bonzini Cc: Philippe Mathieu-Daud=C3=A9 Cc: Richard Henderson Thanks Laszlo Laszlo Ersek (4): fw_cfg: bump file slots to 40 target/i386: remove useless enable_compat_apic_id_mode() prototype hw/i386: add facility to expose CPU topology over fw-cfg hw/i386/pc: expose CPU topology over fw-cfg hw/core/machine.c | 2 ++ hw/i386/fw_cfg.c | 26 ++++++++++++++++++++++++-- hw/i386/fw_cfg.h | 30 +++++++++++++++++++++++++++++- hw/i386/pc.c | 5 +++-- hw/i386/pc_piix.c | 2 ++ hw/i386/pc_q35.c | 2 ++ hw/nvram/fw_cfg.c | 2 +- include/hw/i386/pc.h | 3 +++ target/i386/cpu.h | 2 -- 9 files changed, 66 insertions(+), 8 deletions(-) --=20 2.19.1.3.g30247aa5d201