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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3FD0CC7EE2E for ; Thu, 8 Jun 2023 07:53:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q7AS6-0002Zh-2W; Thu, 08 Jun 2023 03:53:02 -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 1q7AS3-0002Z4-EY for qemu-devel@nongnu.org; Thu, 08 Jun 2023 03:53:00 -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 1q7AS1-0003bN-Sw for qemu-devel@nongnu.org; Thu, 08 Jun 2023 03:52:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686210776; h=from:from:reply-to: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=+Jn7d9p738AKRZsqgqvMRLDR9Ep8gFbrZrDi9+VjKNg=; b=PBaAyP8RNM910ml2VQcYVS5R3dVQJIIY9Rrrhb7xoxonzzl6kPs+/L9QQmNmODTa0+X2fn urrB4e5TIvOmORp0fHSWgZUSB+KNEWbWE1rVjAM0DzQl2BgfBdNiW1kCkIG9vQlM5ZZBE5 K5huhcCjT3hEjR3BB0HD690KIxafANw= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-164-bGag4VugO8alQ45xp94Dfg-1; Thu, 08 Jun 2023 03:52:53 -0400 X-MC-Unique: bGag4VugO8alQ45xp94Dfg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 02F523C0CEED; Thu, 8 Jun 2023 07:52:53 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.54]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AD12D492B00; Thu, 8 Jun 2023 07:52:49 +0000 (UTC) Date: Thu, 8 Jun 2023 08:52:47 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Suravee Suthikulpanit Cc: qemu-devel@nongnu.org, pbonzini@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, mst@redhat.com, marcel.apfelbaum@gmail.com, imammedo@redhat.com, jusual@redhat.com, dfaggioli@suse.com, joao.m.martins@oracle.com, jon.grimm@amd.com, santosh.Shukla@amd.com Subject: Re: [PATCH v6 2/2] pc: q35: Bump max_cpus to 1024 Message-ID: References: <20230607205717.737749-1-suravee.suthikulpanit@amd.com> <20230607205717.737749-3-suravee.suthikulpanit@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20230607205717.737749-3-suravee.suthikulpanit@amd.com> User-Agent: Mutt/2.2.9 (2022-11-12) X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@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, 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-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Wed, Jun 07, 2023 at 03:57:17PM -0500, Suravee Suthikulpanit wrote: > Since KVM_MAX_VCPUS is currently defined to 1024 for x86 as shown in > arch/x86/include/asm/kvm_host.h, update QEMU limits to the same number. > > In case KVM could not support the specified number of vcpus, QEMU would > return the following error message: > > qemu-system-x86_64: kvm_init_vcpu: kvm_get_vcpu failed (xxx): Invalid argument > > Also, keep max_cpus at 288 for machine version 8.0 and older. > > Cc: Igor Mammedov > Cc: Daniel P. Berrangé > Cc: Michael S. Tsirkin > Cc: Julia Suvorova > Reviewed-by: Igor Mammedov > Signed-off-by: Suravee Suthikulpanit > --- > hw/i386/pc_q35.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) Reviewed-by: Daniel P. Berrangé With 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 :|