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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 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 88850C35254 for ; Wed, 5 Feb 2020 11:24:21 +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 4BEEF2072B for ; Wed, 5 Feb 2020 11:24:21 +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="NobhivUX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BEEF2072B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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 1izImn-0002wg-0I; Wed, 05 Feb 2020 11:24:01 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1izIml-0002wb-8p for xen-devel@lists.xenproject.org; Wed, 05 Feb 2020 11:23:59 +0000 X-Inumbo-ID: fa6bb506-4809-11ea-b211-bc764e2007e4 Received: from merlin.infradead.org (unknown [2001:8b0:10b:1231::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id fa6bb506-4809-11ea-b211-bc764e2007e4; Wed, 05 Feb 2020 11:23:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=605lDeBO3LRGlQc5nCpfoZh2gYkD36mNaUh0OjVwQYY=; b=NobhivUXRFHHGATPWF+vn7glQi 3aufHUze+LuWOoRiSxTHtAkJJzj5xLX2TYOvj9yylHsiWDjs5DyK4SMBJDcx7inMCc+ifFeH1mvbe qaKEBs4ykjzgIfJzVwJPMvQRYMtJpmVdLvJXh28uVeqLLavVpkeUnXEm6irxQ5V7ZKyOUEU9ZFe2Q 1to1iEcJHxlkZFw7jOLYscCulsN10xolLFjXPz2tvjPw+9Vwc8QeasRIeyINBZqgPbe0ZWd7hhMGW qz92Eju+iI1YD0iyocxmauCT/o9RsL326TKMLJer4E0C06gxCNgYy4aFArsZuj2j4AYJ4rorDT/Cx kl3TaCBg==; Received: from 54-240-197-235.amazon.com ([54.240.197.235] helo=u3832b3a9db3152.ant.amazon.com) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1izImP-0000Ph-N2; Wed, 05 Feb 2020 11:23:37 +0000 Message-ID: From: David Woodhouse To: Jan Beulich Date: Wed, 05 Feb 2020 11:23:33 +0000 In-Reply-To: References: <20200204151441.10626-1-stewart.hildebrand@dornerworks.com> <89f9cdc5-bd93-7c15-7832-740db273aca6@suse.com> <428eb589-ec3d-1527-02ce-92e2d4367a1a@citrix.com> <81c41a686f6a520936342f04b62d7c27c137f57e.camel@infradead.org> <59013bb7dbf9b79daa6dd280c4448418aa1fc56b.camel@infradead.org> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.1 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Subject: Re: [Xen-devel] [XEN PATCH v2 1/2] Check zone before merging adjacent blocks in heap 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 , Ian Jackson , George Dunlap , Jeff Kubascik , Stewart Hildebrand , xen-devel@lists.xenproject.org Content-Type: multipart/mixed; boundary="===============4662475178106585025==" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" --===============4662475178106585025== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-crtoq+7iFpSo+1TS2aAa" --=-crtoq+7iFpSo+1TS2aAa Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2020-02-05 at 11:49 +0100, Jan Beulich wrote: > Yet, as you say elsewhere, whether an MFN has an > entry in frame_table[] is entirely unclear, so permitting boot- > allocator pages to be freed via alloc_domheap_pages() nevertheless > still doesn't look any better an idea to me. Hm, I don't think I said that, did I? That would be a new and exciting complication. I think every MFN handed out by the boot allocator *should* have a corresponding entry in the frame table. All the PDX setup is done for those pages, just as it is for heap pages. In fact, some of that setup is *only* done in init_boot_pages() right now, and if page ranges don't go through the boot allocator and end up being transferred to the heap in end_boot_allocator(), things (like badpages=3D on the command line) don't work right. --=-crtoq+7iFpSo+1TS2aAa Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCECow ggUcMIIEBKADAgECAhEA4rtJSHkq7AnpxKUY8ZlYZjANBgkqhkiG9w0BAQsFADCBlzELMAkGA1UE BhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgG A1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1dGhl bnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTkwMTAyMDAwMDAwWhcNMjIwMTAxMjM1 OTU5WjAkMSIwIAYJKoZIhvcNAQkBFhNkd213MkBpbmZyYWRlYWQub3JnMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAsv3wObLTCbUA7GJqKj9vHGf+Fa+tpkO+ZRVve9EpNsMsfXhvFpb8 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