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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 C5F3DC43441 for ; Wed, 10 Oct 2018 13:53:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8AE162086D for ; Wed, 10 Oct 2018 13:53:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="EMH5pxWA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8AE162086D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726896AbeJJVPd (ORCPT ); Wed, 10 Oct 2018 17:15:33 -0400 Received: from twosheds.infradead.org ([90.155.92.209]:43134 "EHLO twosheds.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726664AbeJJVPd (ORCPT ); Wed, 10 Oct 2018 17:15:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=twosheds.20170209; h=Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:To:From:Subject:Date:References:In-Reply-To: Message-ID:Sender:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=idi8U8lyyMzRz6UyVykoEvzRjZwQ91mQQlELFZBnack=; b=EMH5pxWAbaMr86K0KaQ20gxyO CAkSS2GHvub39nMuRUI77fc3+6F1vbVEnqJdSA9M4/6+271ZgRWPuNr2sTxQFFpqYlpG8F0kYOScu swvBRFQDvV9xGzc19T2LPdDEO0boGS83x/wcjZoLoaSClKowqVILSb5b5r6xcX5bdxpM9B605+Mds J4tVXqboOKuKkuKIbX4phdUOlKGJ2JPzyF9iSd5qzTd5PMaJPWudK1rApJRt6IQmV4scbsiOXl5mA O1DZGgM5uOb0WfjwLQO7WS9WKd7EwucERfriP1IWaBuY6dgpaslJr1qa6tf74yis2ZwI/+Rw/xPTT Ibe645flw==; Received: from localhost ([127.0.0.1] helo=twosheds.infradead.org) by twosheds.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gAEvE-008X1v-Gb; Wed, 10 Oct 2018 13:53:08 +0000 Received: from 2a01:4c8:101e:24d1:223f:70d1:9683:c60c (SquirrelMail authenticated user dwmw2) by twosheds.infradead.org with HTTP; Wed, 10 Oct 2018 13:53:08 -0000 Message-ID: In-Reply-To: <35f0d72b-c4b9-3557-6348-25a8646c6995@suse.com> References: <20181001071641.19282-1-jgross@suse.com> <20181001071641.19282-3-jgross@suse.com> <47686a61dfc06aa5afb05a893b9a56e6eb46763d.camel@infradead.org> <35f0d72b-c4b9-3557-6348-25a8646c6995@suse.com> Date: Wed, 10 Oct 2018 13:53:08 -0000 Subject: Re: [PATCH 2/2] xen: make xen_qlock_wait() nestable From: "David Woodhouse" To: "Juergen Gross" Cc: "Thomas Gleixner" , "David Woodhouse" , linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org, boris.ostrovsky@oracle.com, hpa@zytor.com, mingo@redhat.com, bp@alien8.de, stable@vger.kernel.org, waiman.long@hp.com, peterz@infradead.org User-Agent: SquirrelMail/1.4.22-21.fc27 MIME-Version: 1.0 Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-SRS-Rewrite: SMTP reverse-path rewritten from by twosheds.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > The Xen HV is doing it right. It is blocking the vcpu in do_poll() and > any interrupt will unblock it. Great. Thanks for the confirmation. -- dwmw2