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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 88FA9C33CB6 for ; Thu, 16 Jan 2020 12:04:46 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 657C120663 for ; Thu, 16 Jan 2020 12:04:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 657C120663 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1is3ss-0003Na-3N; Thu, 16 Jan 2020 12:04:22 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1is3sq-0003NV-9I for xen-devel@lists.xenproject.org; Thu, 16 Jan 2020 12:04:20 +0000 X-Inumbo-ID: 513e3d98-3858-11ea-8710-12813bfff9fa Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 513e3d98-3858-11ea-8710-12813bfff9fa; Thu, 16 Jan 2020 12:04:16 +0000 (UTC) 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 3BF4FAE6F; Thu, 16 Jan 2020 12:04:15 +0000 (UTC) To: Hongyan Xia , Wei Liu References: <5f64321c4cceccd057e3b3e7fadea696793a7966.1578397252.git.hongyxia@amazon.com> From: Jan Beulich Message-ID: Date: Thu, 16 Jan 2020 13:04:16 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: <5f64321c4cceccd057e3b3e7fadea696793a7966.1578397252.git.hongyxia@amazon.com> Content-Language: en-US Subject: Re: [Xen-devel] [PATCH v5 2/7] x86: introduce a new set of APIs to manage Xen page tables X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: xen-devel@lists.xenproject.org, jgrall@amazon.com, =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Wei Liu , Andrew Cooper Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gMDcuMDEuMjAyMCAxMzowNiwgSG9uZ3lhbiBYaWEgd3JvdGU6Cj4gQEAgLTQ5OTIsMjIgKzQ5 OTMsNTUgQEAgaW50IG1tY2ZnX2ludGVyY2VwdF93cml0ZSgKPiAgfQo+ICAKPiAgdm9pZCAqYWxs b2NfeGVuX3BhZ2V0YWJsZSh2b2lkKQo+ICt7Cj4gKyAgICBtZm5fdCBtZm4gPSBhbGxvY194ZW5f cGFnZXRhYmxlX25ldygpOwo+ICsKPiArICAgIHJldHVybiBtZm5fZXEobWZuLCBJTlZBTElEX01G TikgPyBOVUxMIDogbWZuX3RvX3ZpcnQobWZuX3gobWZuKSk7Cj4gK30KCklzbid0IGl0IG1vcmUg ZGFuZ2Vyb3VzIHRvIGRvIHRoZSBtYXBwaW5nIHRoaXMgd2F5IHJvdW5kIHRoYW4gdGhlCm9wcG9z aXRlIChuZXcgY2FsbHMgb2xkKT8gRG9uZSB0aGUgb3Bwb3NpdGUgd2F5IHRoZSBuZXcgZnVuY3Rp b25zCmNvdWxkIGJlIHN3aXRjaGVkIHRvIHRoZWlyIG5ldyBpbXBsZW1lbnRhdGlvbnMgYWhlYWQg b2YgdGhlCnJlbW92YWwgb2YgdGhlIG9sZCBvbmVzLCBhbmQgLSBpZiBzdWl0YWJseSBpc29sYXRl ZCAtIHBlcmhhcHMKc29tZSBvZiB0aGVpciB1c2Vycy4gQW55d2F5LCBwZXJoYXBzIG1vcmUgYSB0 aGVvcmV0aWNhbCByZW1hcmsuCgo+ICt2b2lkIGZyZWVfeGVuX3BhZ2V0YWJsZSh2b2lkICp2KQo+ ICt7Cj4gKyAgICBtZm5fdCBtZm4gPSB2ID8gdmlydF90b19tZm4odikgOiBJTlZBTElEX01GTjsK PiArCj4gKyAgICBpZiAoIHN5c3RlbV9zdGF0ZSAhPSBTWVNfU1RBVEVfZWFybHlfYm9vdCApCj4g KyAgICAgICAgZnJlZV94ZW5fcGFnZXRhYmxlX25ldyhtZm4pOwoKVGhlIGNvbmRpdGlvbiBpcyAo cGFydGx5KSByZWR1bmRhbnQgd2l0aCB3aGF0CmZyZWVfeGVuX3BhZ2V0YWJsZV9uZXcoKSBkb2Vz LiBUaGVyZWZvcmUgSSdkIGxpa2UgdG8gYXNrIHRoYXQKZWl0aGVyIHRoZSBpZigpIGJlIGRyb3Bw ZWQgaGVyZSwgb3IgYmUgY29tcGxldGVkIGJ5IGFsc28KY2hlY2tpbmcgdiB0byBiZSBub24tTlVM TCwgYXQgd2hpY2ggcG9pbnQgdGhpcyB3b3VsZCBsaWtlbHkKYmVjb21lIGp1c3QKCnZvaWQgZnJl ZV94ZW5fcGFnZXRhYmxlKHZvaWQgKnYpCnsKICAgIGlmICggdiAmJiBzeXN0ZW1fc3RhdGUgIT0g U1lTX1NUQVRFX2Vhcmx5X2Jvb3QgKQogICAgICAgIGZyZWVfeGVuX3BhZ2V0YWJsZV9uZXcodmly dF90b19tZm4odikpOwp9Cgo+ICsvKiB2IGNhbiBwb2ludCB0byBhbiBlbnRyeSB3aXRoaW4gYSB0 YWJsZSBvciBiZSBOVUxMICovCj4gK3ZvaWQgdW5tYXBfeGVuX3BhZ2V0YWJsZShjb25zdCB2b2lk ICp2KQoKV2h5ICJlbnRyeSIgaW4gdGhlIGNvbW1lbnQ/CgpKYW4KCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVu LWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcv bWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=