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 0E50BC47DD9 for ; Fri, 22 Mar 2024 14:54:22 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rngHC-0007Rj-Sj; Fri, 22 Mar 2024 10:53:46 -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 1rngHB-0007RY-Vv for qemu-devel@nongnu.org; Fri, 22 Mar 2024 10:53:46 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rngHA-0005Ow-Ak for qemu-devel@nongnu.org; Fri, 22 Mar 2024 10:53:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1711119223; 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:in-reply-to:in-reply-to: references:references; bh=NgRxGJCY4jyhkl9FMooV0KnBI1lLsjDWAntVYrklqTo=; b=hFI/B1s49LFnvgqy76fHOMKeVWyqVlc4ol1FdRDvPWdD4ip3vvKl+xOWDUIrcDQixLobdV j3fnBbHQhbvjELZCwiinaFLLTgrPLCaBhsziSXHSkVkYxMVAVx0Cx6u+0igCX4b3G8LfVJ 0jx8CApxB7zp0+70z5JYv+e2j0HEFLg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-425-tZsNLacnPIOEgMYrRVRh7A-1; Fri, 22 Mar 2024 10:53:41 -0400 X-MC-Unique: tZsNLacnPIOEgMYrRVRh7A-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4BB8C8007A7; Fri, 22 Mar 2024 14:53:41 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.46]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 27A508173; Fri, 22 Mar 2024 14:53:40 +0000 (UTC) Date: Fri, 22 Mar 2024 14:53:33 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Shaoqin Huang Cc: qemu-arm@nongnu.org, Eric Auger , Peter Maydell , Paolo Bonzini , Thomas Huth , Laurent Vivier , qemu-devel@nongnu.org, kvm@vger.kernel.org Subject: Re: [PATCH v8] arm/kvm: Enable support for KVM_ARM_VCPU_PMU_V3_FILTER Message-ID: References: <20240312074849.71475-1-shahuang@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20240312074849.71475-1-shahuang@redhat.com> User-Agent: Mutt/2.2.12 (2023-09-09) X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.222, 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_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: 2.1.29 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 Tue, Mar 12, 2024 at 03:48:49AM -0400, Shaoqin Huang wrote: > The KVM_ARM_VCPU_PMU_V3_FILTER provides the ability to let the VMM decide > which PMU events are provided to the guest. Add a new option > `kvm-pmu-filter` as -cpu sub-option to set the PMU Event Filtering. > Without the filter, all PMU events are exposed from host to guest by > default. The usage of the new sub-option can be found from the updated > document (docs/system/arm/cpu-features.rst). > > Here is an example which shows how to use the PMU Event Filtering, when > we launch a guest by use kvm, add such command line: > > # qemu-system-aarch64 \ > -accel kvm \ > -cpu host,kvm-pmu-filter="D:0x11-0x11" I mistakenly sent some comments to the older v7 (despite this v8 already existing) about the design of this syntax So for linking up the threads: https://lists.nongnu.org/archive/html/qemu-devel/2024-03/msg04703.html 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 :|