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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF477C47258 for ; Mon, 15 Jan 2024 09:07:28 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6E7A56B006E; Mon, 15 Jan 2024 04:07:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 699506B0081; Mon, 15 Jan 2024 04:07:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 538936B0082; Mon, 15 Jan 2024 04:07:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 3C73D6B006E for ; Mon, 15 Jan 2024 04:07:28 -0500 (EST) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 10EA312076F for ; Mon, 15 Jan 2024 09:07:28 +0000 (UTC) X-FDA: 81680966976.08.9012F5D Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) by imf01.hostedemail.com (Postfix) with ESMTP id 587B340003 for ; Mon, 15 Jan 2024 09:07:26 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=alien8.de header.s=alien8 header.b="ZkNaz/iK"; dmarc=pass (policy=none) header.from=alien8.de; spf=pass (imf01.hostedemail.com: domain of bp@alien8.de designates 65.109.113.108 as permitted sender) smtp.mailfrom=bp@alien8.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1705309646; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=fdg/Qndr0DWBNTkgQOVl8J+shnlTJdeLN2SZCkKmRQY=; b=U/AWTvRCOwkzv0h3YXN5uSMmw/NLzf8cYMmug1IfDmeQdSsxYGFCBrAMzcx969geqWRd1J uFUb7Cu2Tiq/3a2vXS7TbCfxOjrqhKYFLesRy0lTftxT+J+NG/6dVf7s5B+eVbsW+s1eFU 1mMGGTTYKmUjLL/Y3wEjonvwrI9Sk34= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=alien8.de header.s=alien8 header.b="ZkNaz/iK"; dmarc=pass (policy=none) header.from=alien8.de; spf=pass (imf01.hostedemail.com: domain of bp@alien8.de designates 65.109.113.108 as permitted sender) smtp.mailfrom=bp@alien8.de ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1705309646; a=rsa-sha256; cv=none; b=ZV0gCM1/OFpLMJt6AjUqNjRCREFVASrZN19IUhdcQnYUiYTY9ivWiPBYpCr33zcjVlavvX F4P+GSL/VS47pfvJet2HpJoNgRGD7EW7GrtDLtzh5oPgTA8CpHnsznUa0shapxN+7EdxMZ uDLNPIUpVCgeJ0SiVUzA+btiH1ch3o8= Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 9238240E01A9; Mon, 15 Jan 2024 09:07:22 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 4xtKFCvfzKuy; Mon, 15 Jan 2024 09:07:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1705309639; bh=fdg/Qndr0DWBNTkgQOVl8J+shnlTJdeLN2SZCkKmRQY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZkNaz/iKc3LzjTMyl6FnAiSlV+JZM1UpTOX9qLr8pnYEKoXUT9jNAtvvmQ8pU0p6m +fYgLGKa+NNt52aDxT3FpVtS7PdZmIN2D80G8SNHTsur2lzAr9RxEVRbPf6TVbVJqg 0OwMIGnWbY/YpFkgkdd2AgwDqcuc1ok33QTw6PNjtU2wtGxK0WfVqX9ipSXjt25gXe +dJPbtsuhvtfPISu0HiFaBDwQPXcW1bgGFX851UQQ/tfaV05wYYFOrnKy1Bwvl6WpL js+6kZTo4WwJfudgNjOUwobT/R51fBqnsVeQfwp9rByapzDXXmQCtuTLkfmLgrQnzo mCFKfrxrLmq2Z9s4w13d+ebgoK3PriI6UcnJAWGPrdbnoWBPB9ojjR7LmmyoMqSQM7 woKce8ot8gcs1H3Br3HLrT7GD+QpKD3RqWHYhyYjpxmZMg3TtHA+lHD+cdRiWxop/r NJy9jak8MYl+VK11r8GNDN3IJe7Xe/nyo4sH0lFeP5FFWIev2qm5caSfykhOcspSbi LGwGMPgfy9HbTFJABSlxrxEqtUzDembSgLL4wMMy9w4doK5sYupWifRHZ70nABRpgq 5nF4zTphmDGv45tYTfXv2gYEibHZQZ8i+vIJ6/ONEFrnq995zzrgNZjmhBPmF9K2IF j8KFtKvdHtbTsDvqHcn/GVZo= Received: from zn.tnic (pd9530f8c.dip0.t-ipconnect.de [217.83.15.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id ED04740E016C; Mon, 15 Jan 2024 09:06:39 +0000 (UTC) Date: Mon, 15 Jan 2024 10:06:39 +0100 From: Borislav Petkov To: Vlastimil Babka Cc: Dave Hansen , Michael Roth , x86@kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, pbonzini@redhat.com, seanjc@google.com, vkuznets@redhat.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, tobin@ibm.com, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, jarkko@kernel.org, ashish.kalra@amd.com, nikunj.dadhania@amd.com, pankaj.gupta@amd.com, liam.merwick@oracle.com, zhi.a.wang@intel.com, Brijesh Singh Subject: Re: [PATCH v1 11/26] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Message-ID: <20240115090639.GAZaT1nx4C4xJuF8IA@fat_crate.local> References: <20231230161954.569267-1-michael.roth@amd.com> <20231230161954.569267-12-michael.roth@amd.com> <20240112200751.GHZaGcF0-OZVJiIB7y@fat_crate.local> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Stat-Signature: 77oq514i8wxmbxmbpr5pr6r97wx6esyf X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 587B340003 X-HE-Tag: 1705309646-996076 X-HE-Meta: U2FsdGVkX1+AdmHhF/p3s6Ifn2O0cjB/9yRsFfmmmCn0rZKDBq+H1hv6BTt5W0pvh+SwABzbBE8CX7qRPZdSirASBBodmQ3DfaWVsFQ2ktyQ9qGh9WB81FMrtsOGLrUBs6BiiRtgIG7/pzJOPaZ30a0TA3KJfguP0q/kz+kcknBXabq7R4IPj+ODSdhMIbh1NNHv/zV8UD0kCgFIEEkoDAqxICzIg54bdUTacRP2GEx4jkz4ZNVnje/ufpyj7ONn100exYsQXmO/cdFadqADdSbj0B82BIvHsw+9ubeqKttZx6FvuW22tT9qdFFQVQHDWt3uvgF8FNOnMG26fAOQQN4jaEA5rhyQDyrp4VunPUPE3Scw9ixTfLkun5FJMJ4Py4tXlMNXeJ77fpQLimmvjOlpdHPRwU/nzigurWRS5MsVafqEqCrs3UZee/9F/gQGd1YsLOhikYrMtT5hwWNiajkNwZO1a7em984DdHalf/w6tIPF7oWGdClQfpMCkvUqY//Vs5cR+sKz9QbPxPt6FusMiEoyQttDQltYcTVRp9OlAKDByoFnzKyZg9bmVzK7yH8I6Y2mDj79b5CqMAaS8e8J6zQwHySCjnWmLB88yeLfsWj/buoZRJH0iVhQ9QBeU1m2t0WtFWAiDxjyLa19V+a8MEScIT+wUK4XHcDwx/Qg9Y8iT5aTIeKjA0/IEslUEq85kFB9rTa9B11xCZhbIDnfY18T/pixiPmL8Ve83f6LvS5srtCY/JxyeDMNCKP9KSTHkQnhK4zrqFvIN1XZFFn87S43CwLP+KAm5u69eXJf9OLOGHgiMM2cWOzeGhnKFaNYB110Na+mLhG6Tg7+TQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Jan 12, 2024 at 09:27:45PM +0100, Vlastimil Babka wrote: > Yeah and last LSF/MM we concluded that it's not as a big disadvantage as we > previously thought https://lwn.net/Articles/931406/ How nice, thanks for that! Do you have some refs to Mike's tests so that we could run them here too with SNP guests to see how big - if any - the fragmentation has. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette