From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by 2002:a17:906:779e:b0:94e:fe67:1757 with SMTP id s30csp250062ejm; Tue, 18 Apr 2023 22:31:21 -0700 (PDT) X-Google-Smtp-Source: AKy350ZMyNleUHLcyKVrHLFrWDApKGWopuys3DtqRxe68BWcJqeoSSCRs1Mj6XDk77+PhwkFy26h X-Received: by 2002:ad4:5965:0:b0:5ad:47a1:1fd8 with SMTP id eq5-20020ad45965000000b005ad47a11fd8mr26424037qvb.50.1681882281496; Tue, 18 Apr 2023 22:31:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681882281; cv=none; d=google.com; s=arc-20160816; b=WdHGPhgm+DYQMQOYraKjpOpFJvXkIc7GBA1T/Me4A28k6ZcMNh3oqjqfBmaVn6SfAa 435+UFrfULLEd2MGPEVdF3KU+pNqHYe8/yzuhDdsiCM0iJPQdPsYANQngx+Dt1QOqADH voAi9LyJKbGPJ7gYo1X2P6tsKuUITSju8YKHWoHkluuMvWdJ1tM85w4YBCgTJSmRKJeS Kgw34YWoJpRFJH29bhxuek0Qw/43aME6Z3oPzacMp0FpLRbhcd9ZgddVct2KpA3RTeG4 9JjFnfZWt6brr8lQcFJH50cNUQrfpr2iFq3NYWmrYIWI1wazYrdziPK7mKtEKu3EO70N aJIA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-disposition:in-reply-to :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=X7P20zMft03/QtI4a2h8bHRgl8d+BbRt0aljLaAsMJI=; b=zHTWcy7nlovXD6/qduonZt0LxJ/1lBSYFEGWmr2inXnJCzMJpIHKaATeDuUcKp9ec0 GoG6s/NKyGxBhJ16UoHXNpj8tqDHGigTSDc/Bb4IErvF11sKGpbFcD3YvuDEeYIlAT7R ohVse8IBqqpwoxFpor31DX1VOfJoJC27ZgfV/NpAOAWLSNR6CX9ioBfObcDKHrf3Yu++ HRnCLo5780nkkUmASodqZowAJV8R4a9Ax4WZFVeO6ICr/ixzm1B5i1VQTqu9CXARTAgA jJqZz+her8eqwZAXkMRxE1xuPvzCfD+Z7+MV4KFenfnrJYwec8XhnOCysKkAbb0uN8w4 /Ptw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=WG1cwJFd; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id 2-20020ad45ba2000000b005cf292cf8d1si8520272qvq.50.2023.04.18.22.31.21 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 18 Apr 2023 22:31:21 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=WG1cwJFd; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pp0PQ-0001Hi-MI; Wed, 19 Apr 2023 01:31:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pp0PP-0001HM-NJ for qemu-arm@nongnu.org; Wed, 19 Apr 2023 01:31:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pp0PL-0000v6-0E for qemu-arm@nongnu.org; Wed, 19 Apr 2023 01:31:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1681882265; 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: in-reply-to:in-reply-to:references:references; bh=X7P20zMft03/QtI4a2h8bHRgl8d+BbRt0aljLaAsMJI=; b=WG1cwJFdQiTSeidawajj/fK+DRuLXeEf4sC0eBJA0tLlPuhASvvLeWNgORNlaTRQjYLwyX JzQGBkcXbjrAvIyVK57Jls1Wd1UhbEyKBYNgVgWg24QTbvHOaCyfhth7K6cWZiJ2ExMj7/ 4gjKWbapzVfjy/jp4bISWXR970HC2H4= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-304-xMN35tUROBONCeyCc3Wqdw-1; Wed, 19 Apr 2023 01:31:04 -0400 X-MC-Unique: xMN35tUROBONCeyCc3Wqdw-1 Received: by mail-wm1-f69.google.com with SMTP id 5b1f17b1804b1-3f08ed462c0so49299145e9.1 for ; Tue, 18 Apr 2023 22:31:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681882263; x=1684474263; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=X7P20zMft03/QtI4a2h8bHRgl8d+BbRt0aljLaAsMJI=; b=QK2gnkAY1QyB0k9p72FlU5kPbo3BtKmSOO6Yo4v1chxQgVhKnWcuMtayhK+zvWSwFh KmOo+w0QR89nPCEkOnLgj6Dbo5V06e8OAQFd6dNddgSTgkJQ/1nCI9D7sR3xZ6DoYg4n 1860dGby+LnYw4i9zi5KP7otC84Xa+jVio4Uk3uNfrsTJbZ31a6Fq6KHGeM+zlpDxYpi qgI07uU90d+DPF4Y9bvonJsxldyI+tBCb7o6I+8g3GxqAVLWesW/Cl+xOwq9iOSTw5gp WmqtEH3QhudeEJciTPjtwjFW4kBITp9DFCtBsyo4T24cuwAiYgnwBFMOczR7QAgtOBkZ XsGg== X-Gm-Message-State: AAQBX9eOjdT7LtvKPlpgwwCX0141SUaXVWvWXPPeFI8l5+D+lp52qbDq 04BGU+NBIngYB/r8TZlmsw+TJNdyEIG4jcBx8ReX5y7FJsQhaeZVLj14q8xNzN3A16Z3Z+U/bih KtlKmiFAv+3yE X-Received: by 2002:a05:6000:12cf:b0:2ef:b257:b46c with SMTP id l15-20020a05600012cf00b002efb257b46cmr843266wrx.29.1681882263313; Tue, 18 Apr 2023 22:31:03 -0700 (PDT) X-Received: by 2002:a05:6000:12cf:b0:2ef:b257:b46c with SMTP id l15-20020a05600012cf00b002efb257b46cmr843251wrx.29.1681882263020; Tue, 18 Apr 2023 22:31:03 -0700 (PDT) Received: from redhat.com ([2a02:14f:1fc:3571:9b25:3dfd:20fa:b195]) by smtp.gmail.com with ESMTPSA id u19-20020a05600c211300b003f17a00c214sm952379wml.16.2023.04.18.22.30.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Apr 2023 22:31:02 -0700 (PDT) Date: Wed, 19 Apr 2023 01:30:15 -0400 From: "Michael S. Tsirkin" To: Eric DeVolder Cc: shannon.zhaosl@gmail.com, imammedo@redhat.com, ani@anisinha.ca, peter.maydell@linaro.org, qemu-arm@nongnu.org, qemu-devel@nongnu.org, marcel.apfelbaum@gmail.com, pbonzini@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, boris.ostrovsky@oracle.com Subject: Re: [PATCH v2 2/4] hw/acpi: arm: bump MADT to revision 5 Message-ID: <20230419012905-mutt-send-email-mst@kernel.org> References: <20230418165219.2036-1-eric.devolder@oracle.com> <20230418165219.2036-3-eric.devolder@oracle.com> MIME-Version: 1.0 In-Reply-To: <20230418165219.2036-3-eric.devolder@oracle.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: +TIwInK0eIW8 On Tue, Apr 18, 2023 at 12:52:17PM -0400, Eric DeVolder wrote: > Currently ARM QEMU generates, and reports, MADT revision 4. ACPI 6.3 > introduces MADT revision 5. > > For MADT revision 5, the GICC structure adds an SPE Overflow Interrupt > field. This new 2-byte field is created from the existing 3-byte > Reserved field. The spec indicates if the SPE overflow interrupt is > not supported, to zero the field. > > Signed-off-by: Eric DeVolder So why do we bother changing this? I'd rather defer until we actually intend to fill this field. > --- > hw/arm/virt-acpi-build.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c > index 4156111d49..23268dd981 100644 > --- a/hw/arm/virt-acpi-build.c > +++ b/hw/arm/virt-acpi-build.c > @@ -705,7 +705,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) > int i; > VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); > const MemMapEntry *memmap = vms->memmap; > - AcpiTable table = { .sig = "APIC", .rev = 4, .oem_id = vms->oem_id, > + AcpiTable table = { .sig = "APIC", .rev = 5, .oem_id = vms->oem_id, > .oem_table_id = vms->oem_table_id }; > > acpi_table_begin(&table, table_data); > @@ -763,7 +763,9 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) > /* Processor Power Efficiency Class */ > build_append_int_noprefix(table_data, 0, 1); > /* Reserved */ > - build_append_int_noprefix(table_data, 0, 3); > + build_append_int_noprefix(table_data, 0, 1); > + /* SPE overflow Interrupt */ > + build_append_int_noprefix(table_data, 0, 2); > } > > if (vms->gic_version != VIRT_GIC_VERSION_2) { > -- > 2.31.1