Received: by 2002:a25:1985:0:0:0:0:0 with SMTP id 127csp4020652ybz; Mon, 20 Apr 2020 14:02:01 -0700 (PDT) X-Google-Smtp-Source: APiQypIZQZmtbYDzLmifzj+1ya3xn5/bvNh7lgQoUdywVVmowmY7Qz4IhbnLv+hB0qY4Ji2LdCpj X-Received: by 2002:a05:6402:154:: with SMTP id s20mr16408671edu.224.1587416521126; Mon, 20 Apr 2020 14:02:01 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1587416521; cv=none; d=google.com; s=arc-20160816; b=ydbLq0/0QhlvuNXwWKf6NtiqB/P32P7a+0U3bSZMZhWEqHzsBSKA1YvmpvsdB6IKJL lb42iIan9djhco3qz9XKPXvJnXAKepyPlbCWG9vuWInkG95+Er1RFiAu6ugexIVPAnt5 WSXZPudohc8jCv0ydyf5grZ8Xby3U7eua0zr7Wt5ZeaN6DLsOzCSe8Av4VKdGefeJSyj OlfHnQGOG9htFdZ4Xh6WvsQLtiO7CBp7jqrV21y1sLtA/LAhj5wy3i4qucp8VO4x18Bc vigedSsDegLetLk+g5MJOdzeRUDQ9ujeCRJ7ZM4vt+vvx6vm2RlnuuahDPKxRL8Dymov ApTA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=5AzOtnFIjQWmyoW68h5wvyWBS0sv1L14lQ2rr7ZmuFU=; b=oQ7oeQYU3CLH8P4IqV/0RCJaQu6eERQtJV3d1Jc0RUDNpshxjrW9WUbpZJI914rXiy ZYVSi+xjfD2g7me58ydL0abzQrXQTArL200F7UanQRnY839ITJ3k7r+P932YAluoOycx rBW0/ohBrYsmFWKPvcXXpLFEbs+v0+pahsqgoRPCX7J2BLKnd07OU6WdxV/U+DC/MQg0 OOrZ5/bwfXWbL1ZYry/qUWtZG64UVZ++qZfQ6wLCNTKoUPmR8g3VWBYd59ybWSFBaE0O lWISVCmypiPgkNwcOp7VpqXmKLMPpNR6laAPw1AMPVZjXiTZkcUOyb5Li0mJzB8Q6bYp UUPw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id j26si248681ejt.88.2020.04.20.14.01.36; Mon, 20 Apr 2020 14:02:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727070AbgDTVAN (ORCPT + 99 others); Mon, 20 Apr 2020 17:00:13 -0400 Received: from mx2.suse.de ([195.135.220.15]:50632 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725897AbgDTVAN (ORCPT ); Mon, 20 Apr 2020 17:00:13 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id CAA6FAC7F; Mon, 20 Apr 2020 21:00:09 +0000 (UTC) Date: Mon, 20 Apr 2020 13:56:41 -0700 From: Davidlohr Bueso To: Marc Zyngier Cc: tglx@linutronix.de, pbonzini@redhat.com, kvm@vger.kernel.org, Davidlohr Bueso , peterz@infradead.org, torvalds@linux-foundation.org, bigeasy@linutronix.de, linux-kernel@vger.kernel.org, rostedt@goodmis.org, linux-mips@vger.kernel.org, Paul Mackerras , joel@joelfernandes.org, will@kernel.org, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH v2] kvm: Replace vcpu->swait with rcuwait Message-ID: <20200420205641.6sgsllj6pmsnwrvp@linux-p48b> References: <20200324044453.15733-1-dave@stgolabs.net> <20200324044453.15733-4-dave@stgolabs.net> <20200420164132.tjzk5ebx35m66yce@linux-p48b> <418acdb5001a9ae836095b7187338085@misterjones.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <418acdb5001a9ae836095b7187338085@misterjones.org> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 20 Apr 2020, Marc Zyngier wrote: >This looks like a change in the semantics of the tracepoint. Before this >change, 'waited' would have been true if the vcpu waited at all. Here, >you'd >have false if it has been interrupted by a signal, even if the vcpu >has waited >for a period of time. Hmm but sleeps are now uninterruptible as we're using TASK_IDLE. Thanks, Davidlohr