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 612E8C433EF for ; Thu, 21 Jul 2022 17:14:12 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BCAF26B0071; Thu, 21 Jul 2022 13:14:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B53416B0072; Thu, 21 Jul 2022 13:14:11 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9A70C6B0074; Thu, 21 Jul 2022 13:14:11 -0400 (EDT) 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 88EE76B0071 for ; Thu, 21 Jul 2022 13:14:11 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 58DC11C648A for ; Thu, 21 Jul 2022 17:14:11 +0000 (UTC) X-FDA: 79711755102.01.077381B Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by imf13.hostedemail.com (Postfix) with ESMTP id 860E420016 for ; Thu, 21 Jul 2022 17:14:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658423650; x=1689959650; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=2VsP1VnPxrhHVMrqEWBHwDQJS/BpBEhQECyvetxj8xs=; b=IiEdJOSTAU9cvum/gRomjl2+mv0QHArc+/wHSAliLhjGmF033TuTJ9Tm bMh7ITjwEZmab+Fq6XsNtOHmOcZKGuldCwkroKEXjBaCvWJJHqlNJnzln Ugf6ppxC2zIOi4SJ6ypd8KawgSSFwoUKDkKXpPbazhqMnDONl6pr9WLSK uJ8Ga/waamvWFyyhm7vKKFEYrlMheamBOsOJadEpLeFxDeY/Wg4IT3tOe qhBcfnAqu10j/7hhl9QU7PexRLSMhc5OVy2EnLFAwVgo2J+qmc4ZkfKtR nRHwUPJwkb/FP2UjlKgp667YhJVGZkgQcI4Wof6JpOC/iS/U+gPqIxXCq A==; X-IronPort-AV: E=McAfee;i="6400,9594,10415"; a="285875336" X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="285875336" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 10:12:17 -0700 X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="573825972" Received: from vasantgx-mobl.amr.corp.intel.com (HELO [10.212.244.191]) ([10.212.244.191]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 10:12:15 -0700 Message-ID: Date: Thu, 21 Jul 2022 10:12:14 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1 Subject: Re: [PATCHv7 00/14] mm, x86/cc: Implement support for unaccepted memory Content-Language: en-US To: Marc Orr Cc: Borislav Petkov , Ard Biesheuvel , Dionna Amalie Glaze , "Kirill A. Shutemov" , Peter Gonda , Andy Lutomirski , Sean Christopherson , Andrew Morton , Joerg Roedel , Andi Kleen , Kuppuswamy Sathyanarayanan , David Rientjes , Vlastimil Babka , Tom Lendacky , Thomas Gleixner , Peter Zijlstra , Paolo Bonzini , Ingo Molnar , Varad Gautam , Dario Faggioli , Mike Rapoport , David Hildenbrand , Marcelo Cerri , tim.gardner@canonical.com, Khalid ElMously , philip.cox@canonical.com, the arch/x86 maintainers , Linux Memory Management List , linux-coco@lists.linux.dev, linux-efi , LKML , "Yao, Jiewen" References: <20220627223808.ihgy3epdx6ofll43@black.fi.intel.com> <20220718172159.4vwjzrfthelovcty@black.fi.intel.com> <22d54786-bc12-ecc5-2b37-cbaa56090aa8@intel.com> From: Dave Hansen In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=IiEdJOST; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf13.hostedemail.com: domain of dave.hansen@intel.com has no SPF policy when checking 192.55.52.120) smtp.mailfrom=dave.hansen@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1658423651; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=fpq/XCnv1dPJaiU24CZAVaiOXiU6Ds0ZR827mZTzugg=; b=QqrZwx3l2/dCXLZ3YI/SnA2T6LuQPrG7MWjJLMoQBEXdBAY5+MLOItwk/CUcW4CHfYlbiw mLswXwtKGZhhBi1elJyIjYbvpFyuZdohEnwsVk3D9uYSPGIFyswm9+ySkPcPgcPe8Rbp8O MSs2vEEUERAhQ+n13pNS5cvLzp4iZuI= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1658423651; a=rsa-sha256; cv=none; b=4PjkP5nvjifsiwrdxCop0jUznQ30gTK6FKw5a1mAoT1cAfO0AZTq6x+IHihjk/OL63OZz4 dfDWr6EhwyKFfEWuULGd2DCGCOBKfJiyQlCEwWjb5IBNCq8HEMsOt5jcoXTNaZ5YTOtQ2B bKm+LqafJBVHI3M8xhxSog0l6tmbNBM= X-Rspam-User: X-Stat-Signature: i57ahgkjncmotmwdeonbqdtc5r56cmo4 X-Rspamd-Queue-Id: 860E420016 Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=IiEdJOST; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf13.hostedemail.com: domain of dave.hansen@intel.com has no SPF policy when checking 192.55.52.120) smtp.mailfrom=dave.hansen@intel.com X-Rspamd-Server: rspam04 X-HE-Tag: 1658423650-50894 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: On 7/19/22 17:26, Marc Orr wrote: > - Dave's suggestion to "2. Boot some intermediate thing like a > bootloader that does acceptance ..." is pretty clever! So if upstream > thinks this FW-kernel negotiation is not a good direction, maybe we > (Google) can pursue this idea to avoid introducing yet another tag on > our images. I'm obviously speaking only for myself here and not for "upstream" as a whole, but I clearly don't like the FW/kernel negotiation thing. It's a permanent pain in our necks to solve a very temporary problem.