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=-5.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 5966CC35247 for ; Thu, 6 Feb 2020 23:11:41 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2C525214AF for ; Thu, 6 Feb 2020 23:11:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WgPrxFad" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C525214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vmHtTUqY0UhrzpANFEuLHqG20S/7CLYcmG5kUjIzMaE=; b=WgPrxFad0K3FEb 1Jvg8OouY01Jigq4wm0xxRoO9pHu+HGoZF50xOgC5RqwtfNiygb8vYBnHvGV1Lery7rieok+hn02/ RhROd2vlh84YNWIetML0/rLIwZQfVLOmBVua9Yysxutaa8sMNO7be4MH21fe08sDm6j5p14w8gRnv 9ogTtH327fQZtxiy/51KiKZgyWmQ5AYvsDN8sAQo084Pi597DfNn30SVKQ0t4WKLTTTAxQ6TnC34C FfTUPsOi3hguHXkqm5RCcAqWKz+qsP+aX9iP4EUnGSpn2jKoeTQXyRQn85xkdAec+y06IRFefMTOf oin06Yurdyv4BWJ/xulg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1izqJ5-0006f0-Cr; Thu, 06 Feb 2020 23:11:35 +0000 Received: from mga09.intel.com ([134.134.136.24]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1izqJ2-0006eA-8H for linux-arm-kernel@lists.infradead.org; Thu, 06 Feb 2020 23:11:33 +0000 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2020 15:11:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,411,1574150400"; d="scan'208";a="264787622" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.202]) by fmsmga002.fm.intel.com with ESMTP; 06 Feb 2020 15:11:27 -0800 Date: Thu, 6 Feb 2020 15:11:27 -0800 From: Sean Christopherson To: Peter Xu Subject: Re: [PATCH v5 19/19] KVM: selftests: Add test for KVM_SET_USER_MEMORY_REGION Message-ID: <20200206231127.GB24556@linux.intel.com> References: <20200121223157.15263-1-sean.j.christopherson@intel.com> <20200121223157.15263-20-sean.j.christopherson@intel.com> <20200206223001.GJ700495@xz-x1> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200206223001.GJ700495@xz-x1> User-Agent: Mutt/1.5.24 (2015-08-30) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200206_151132_345296_0BD5C1D9 X-CRM114-Status: GOOD ( 13.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wanpeng Li , kvm@vger.kernel.org, David Hildenbrand , linux-mips@vger.kernel.org, Paul Mackerras , kvmarm@lists.cs.columbia.edu, Janosch Frank , Marc Zyngier , Joerg Roedel , Christian Borntraeger , Julien Thierry , Suzuki K Poulose , kvm-ppc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jim Mattson , Cornelia Huck , Christoffer Dall , linux-kernel@vger.kernel.org, James Morse , Paolo Bonzini , Vitaly Kuznetsov , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Feb 06, 2020 at 05:30:01PM -0500, Peter Xu wrote: > On Tue, Jan 21, 2020 at 02:31:57PM -0800, Sean Christopherson wrote: > > Add a KVM selftest to test moving the base gfn of a userspace memory > > region. Although the basic concept of moving memory regions is not x86 > > specific, the assumptions regarding large pages and MMIO shenanigans > > used to verify the correctness make this x86_64 only for the time being. > > > > Signed-off-by: Sean Christopherson > > (I'm a bit curious why write 2 first before 1...) To verify KVM actually relocated the memslot and didn't leave anything in the TLB. If "2" isn't written, KVM could completely botch the MOVE but the guest_code() would still signal pass because it would eventually see the 0-> transitions. > Reviewed-by: Peter Xu > > -- > Peter Xu > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel