Received: by 2002:ac0:a5b6:0:0:0:0:0 with SMTP id m51-v6csp445808imm; Wed, 13 Jun 2018 03:06:14 -0700 (PDT) X-Google-Smtp-Source: ADUXVKKIbAZehtQhyxCWdiBb6Xz7lTd/XuCOjlkEyo85vpYHajynDeXKZ2cK2ZhSebazqxRtjY8h X-Received: by 2002:a17:902:6847:: with SMTP id f7-v6mr4427401pln.173.1528884374813; Wed, 13 Jun 2018 03:06:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1528884374; cv=none; d=google.com; s=arc-20160816; b=tYha1sCDzOgdutHTIY9MhWYWTqY8cV12lzsY/an+AJrLOs6RS42qhiWUpY3MysVz/A mrwYS9eiptO/AOhTJZYofbqpVmVyITu2Jj6FbIqBCeMmLgIl7M59dFQVli5GwO4v3bmk x+QQUBHBNDiCf3lN+R409eOT8Pm7oq9yJV0UP/CqkuoOJisaNYNrZqEaPlUdnHjcWWCy XdzhZDoexACWEfQy5rl7sBGIM2J1kJbbMEKVjhY015ygv3CbCt4fPRR2yW1adqwuNPLj A96cub14MlItJJG+I1FhA5ojTOqhAyGu2/PAtzpKMIJTNMe8Nf2a+PMGc6Pqg0k3J2gI IezA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-disposition :content-transfer-encoding:mime-version:in-reply-to:references :subject:cc:to:from:date:message-id:arc-authentication-results; bh=ExdUVyREGM4P+S+KixRv3/FGo9DD5yiWnasn88qP2pc=; b=HARPOrZaK5WUvKCK9Wq4Gv+pYzsBfOwIKnXtlzS5yOvT48oOvUAIaEQWH2NdNJ9DDz 9YxljMju0oThrLxdFEz01BxJAC5shdvPln7SQOWiEzhb37dnJgtNQFgOVK9qeefInz4v Hhe4168p2zp0L9DyG7kT/drVlGkZiksuo4ymVLlL/wtkc0JdGNR1VHKObaGjYtNghNYF bXLE01rgxdY5dWdcLOBaWND6w754JKNWbDVUFR+vuq2b8VFPo3rFRb/n9LkJgaBIcdt1 E9skld9hoypoxyAo6iwUd6svDTWGQOwVRB6L09OvyJncMjjt8iWwIhMTHKwb78ApT4+R Rzqg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 95-v6si2580739pld.426.2018.06.13.03.06.00; Wed, 13 Jun 2018 03:06:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935109AbeFMKFg convert rfc822-to-8bit (ORCPT + 99 others); Wed, 13 Jun 2018 06:05:36 -0400 Received: from prv1-mh.provo.novell.com ([137.65.248.33]:50526 "EHLO prv1-mh.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934969AbeFMKFf (ORCPT ); Wed, 13 Jun 2018 06:05:35 -0400 Received: from INET-PRV1-MTA by prv1-mh.provo.novell.com with Novell_GroupWise; Wed, 13 Jun 2018 04:05:35 -0600 Message-Id: <5B20EC6C02000078001CACBA@prv1-mh.provo.novell.com> X-Mailer: Novell GroupWise Internet Agent 18.0.0 Date: Wed, 13 Jun 2018 04:05:32 -0600 From: "Jan Beulich" To: "Juergen Gross" Cc: "xen-devel" , "Boris Ostrovsky" , Subject: Re: [Xen-devel] [PATCH] xen: don't use privcmd_call() from xen_mc_flush() References: <20180613095806.2978-1-jgross@suse.com> In-Reply-To: <20180613095806.2978-1-jgross@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> On 13.06.18 at 11:58, wrote: > Using privcmd_call() for a singleton multicall seems to be wrong, as > privcmd_call() is using stac()/clac() to enable hypervisor access to > Linux user space. > > Add a new xen_single_call() function to be use for that purpose. > > Reported-by: Jan Beulich > Signed-off-by: Juergen Gross Reviewed-by: Jan Beulich