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 47A52C11D05 for ; Thu, 20 Feb 2020 15:38:27 +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 223242071E for ; Thu, 20 Feb 2020 15:38:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 223242071E 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 1j4nu3-00022v-VU; Thu, 20 Feb 2020 15:38:15 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1j4nu2-00022n-Mb for xen-devel@lists.xenproject.org; Thu, 20 Feb 2020 15:38:14 +0000 X-Inumbo-ID: 01338d2a-53f7-11ea-b0fd-bc764e2007e4 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 01338d2a-53f7-11ea-b0fd-bc764e2007e4; Thu, 20 Feb 2020 15:38:13 +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 509FAB345; Thu, 20 Feb 2020 15:38:11 +0000 (UTC) To: David Woodhouse References: <8a95f787ca93b23ee8d8c0b55fcc63d22a75c5f3.camel@infradead.org> <20200201003303.2363081-2-dwmw2@infradead.org> From: Jan Beulich Message-ID: <0c84d313-6e7f-338b-723f-e76865a16798@suse.com> Date: Thu, 20 Feb 2020 16:38:12 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200201003303.2363081-2-dwmw2@infradead.org> Content-Language: en-US Subject: Re: [Xen-devel] [PATCH 2/8] x86/setup: Fix badpage= handling for memory above HYPERVISOR_VIRT_END 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: Stefano Stabellini , Julien Grall , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Varad Gautam , Ian Jackson , Hongyan Xia , xen-devel@lists.xenproject.org, Paul Durrant , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gMDEuMDIuMjAyMCAwMTozMiwgRGF2aWQgV29vZGhvdXNlIHdyb3RlOgo+IC0tLSBhL3hlbi9j b21tb24vcGFnZV9hbGxvYy5jCj4gKysrIGIveGVuL2NvbW1vbi9wYWdlX2FsbG9jLmMKPiBAQCAt MTc1OCw2ICsxNzU4LDE4IEBAIGludCBxdWVyeV9wYWdlX29mZmxpbmUobWZuX3QgbWZuLCB1aW50 MzJfdCAqc3RhdHVzKQo+ICAgICAgcmV0dXJuIDA7Cj4gIH0KPiAgCj4gK3N0YXRpYyB1bnNpZ25l ZCBsb25nIGNvbnRpZ19hdmFpbF9wYWdlcyhzdHJ1Y3QgcGFnZV9pbmZvICpwZywgdW5zaWduZWQg bG9uZyBtYXhfcGFnZXMpCj4gK3sKPiArICAgIHVuc2lnbmVkIGxvbmcgaTsKPiArCj4gKyAgICBm b3IgKCBpID0gMCA7IGkgPCBtYXhfcGFnZXM7IGkrKykKCk5pdDogU3RyYXkgYmxhbmsgYmVmb3Jl IGZpcnN0IHNlbWljb2xvbi4KCj4gKyAgICB7Cj4gKyAgICAgICAgaWYgKCBwZ1tpXS5jb3VudF9p bmZvICYgUEdDX2Jyb2tlbiApCj4gKyAgICAgICAgICAgIGJyZWFrOwo+ICsgICAgfQo+ICsgICAg cmV0dXJuIGk7CgpGdXJ0aGVyIG5pdHM6IENvbW1vbmx5IHdlIG9taXQgdGhlIGJyYWNlcyBpbiBj YXNlcyBsaWtlIHRoaXMgb25lLgpXZSBhbHNvIGxpa2UgdG8gaGF2ZSBibGFuayBsaW5lcyBiZWZv cmUgdGhlIG1haW4gcmV0dXJuIHN0YXRlbWVudApvZiBhIGZ1bmN0aW9uLgoKPiBAQCAtMTg0Niw2 ICsxODYzLDYzIEBAIHN0YXRpYyB1bnNpZ25lZCBsb25nIGF2YWlsX2hlYXBfcGFnZXMoCj4gICAg ICByZXR1cm4gZnJlZV9wYWdlczsKPiAgfQo+ICAKPiArc3RhdGljIHZvaWQgbWFya19iYWRfcGFn ZXModm9pZCkKCl9faW5pdCBwbGVhc2UKCj4gK3sKPiArICAgIHVuc2lnbmVkIGxvbmcgYmFkX3Nw Zm4sIGJhZF9lcGZuOwo+ICsgICAgY29uc3QgY2hhciAqcDsKPiArICAgIHN0cnVjdCBwYWdlX2lu Zm8gKnBnOwo+ICsjaWZkZWYgQ09ORklHX1g4Ngo+ICsgICAgY29uc3Qgc3RydWN0IHBsYXRmb3Jt X2JhZF9wYWdlICpiYWRwYWdlOwo+ICsgICAgdW5zaWduZWQgaW50IGksIGosIGFycmF5X3NpemU7 Cj4gKwo+ICsgICAgYmFkcGFnZSA9IGdldF9wbGF0Zm9ybV9iYWRwYWdlcygmYXJyYXlfc2l6ZSk7 Cj4gKyAgICBpZiAoIGJhZHBhZ2UgKQo+ICsgICAgewo+ICsgICAgICAgIGZvciAoIGkgPSAwOyBp IDwgYXJyYXlfc2l6ZTsgaSsrICkKPiArICAgICAgICB7Cj4gKyAgICAgICAgICAgIGZvciAoIGog PSAwOyBqIDwgMVVMIDw8IGJhZHBhZ2UtPm9yZGVyOyBqKysgKQoKRWl0aGVyIHlvdSBtZWFuIGJh ZHBhZ2VbaV0uKiBoZXJlIGFuZCBiZWxvdywgb3IgeW91J3JlIG1pc3NpbmcgYW4KaW5jcmVtZW50 IG9mIGJhZHBhZ2Ugc29tZXdoZXJlLgoKPiArICAgICAgICAgICAgewo+ICsgICAgICAgICAgICAg ICAgaWYgKCBtZm5fdmFsaWQoX21mbihiYWRwYWdlLT5tZm4gKyBqKSkgKQo+ICsgICAgICAgICAg ICAgICAgewo+ICsgICAgICAgICAgICAgICAgICAgIHBnID0gbWZuX3RvX3BhZ2UoX21mbihiYWRw YWdlLT5tZm4gKyBqKSk7Cj4gKyAgICAgICAgICAgICAgICAgICAgcGctPmNvdW50X2luZm8gfD0g UEdDX2Jyb2tlbjsKPiArICAgICAgICAgICAgICAgICAgICBwYWdlX2xpc3RfYWRkX3RhaWwocGcs ICZwYWdlX2Jyb2tlbl9saXN0KTsKPiArICAgICAgICAgICAgICAgIH0KPiArICAgICAgICAgICAg fQo+ICsgICAgICAgIH0KPiArICAgIH0KPiArI2VuZGlmCj4gKwo+ICsgICAgLyogQ2hlY2sgbmV3 IHBhZ2VzIGFnYWluc3QgdGhlIGJhZC1wYWdlIGxpc3QuICovCj4gKyAgICBwID0gb3B0X2JhZHBh Z2U7Cj4gKyAgICB3aGlsZSAoICpwICE9ICdcMCcgKQo+ICsgICAgewo+ICsgICAgICAgIGJhZF9z cGZuID0gc2ltcGxlX3N0cnRvdWwocCwgJnAsIDApOwo+ICsgICAgICAgIGJhZF9lcGZuID0gYmFk X3NwZm47Cj4gKwo+ICsgICAgICAgIGlmICggKnAgPT0gJy0nICkKPiArICAgICAgICB7Cj4gKyAg ICAgICAgICAgIHArKzsKPiArICAgICAgICAgICAgYmFkX2VwZm4gPSBzaW1wbGVfc3RydG91bChw LCAmcCwgMCk7Cj4gKyAgICAgICAgICAgIGlmICggYmFkX2VwZm4gPCBiYWRfc3BmbiApCj4gKyAg ICAgICAgICAgICAgICBiYWRfZXBmbiA9IGJhZF9zcGZuOwo+ICsgICAgICAgIH0KPiArCj4gKyAg ICAgICAgaWYgKCAqcCA9PSAnLCcgKQo+ICsgICAgICAgICAgICBwKys7Cj4gKyAgICAgICAgZWxz ZSBpZiAoICpwICE9ICdcMCcgKQo+ICsgICAgICAgICAgICBicmVhazsKCkkgdGhpbmsgdGhpcyBj b21tb24gKHdpdGggaW5pdF9ib290X3BhZ2VzKCkpIHBhcnQgb2YgcGFyc2luZwp3b3VsZCBiZXR0 ZXIgYWJzdHJhY3RlZCBvdXQsIHN1Y2ggdGhlcmUgd2lsbCBiZSBqdXN0IG9uZQppbnN0YW5jZSBv ZiwgYW5kIGhlbmNlIHRoZXJlJ3Mgbm8gcmlzayBvZiB0aGluZ3MgZ29pbmcgb3V0IG9mCnN5bmMu Cgo+ICsgICAgICAgIHdoaWxlICggbWZuX3ZhbGlkKF9tZm4oYmFkX3NwZm4pKSAmJiBiYWRfc3Bm biA8IGJhZF9lcGZuICkKCkFzIHBlciBpbml0X2Jvb3RfcGFnZXMoKSBhcyB3ZWxsIGFzIHBlciB0 aGUgImJhZF9lcGZuID0gYmFkX3NwZm47Igp5b3UgaGF2ZSBmdXJ0aGVyIHVwLCB0aGUgcmFuZ2Ug aGVyZSBpcyBpbmNsdXNpdmUgYXQgaXRzIGVuZC4gSSdtCmFsc28gdW5jZXJ0YWluIGFib3V0IHRo ZSBzdG9wcGluZyBhdCB0aGUgZmlyc3QgIW1mbl92YWxpZCgpIC0KdGhlcmUgbWF5IHdlbGwgYmUg ZnVydGhlciB2YWxpZCBwYWdlcyBsYXRlciBvbi4KCkphbgoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2 ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy9tYWls bWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==