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Shutemov" , Borislav Petkov , Andy Lutomirski , Sean Christopherson , Andrew Morton , Joerg Roedel , Ard Biesheuvel , Andi Kleen , Kuppuswamy Sathyanarayanan , David Rientjes , Vlastimil Babka , Tom Lendacky , Thomas Gleixner , "Peter Zijlstra" , Paolo Bonzini , "Ingo Molnar" , Varad Gautam , "Dario Faggioli" , Dave Hansen , "Mike Rapoport" , David Hildenbrand , , , , , "the arch/x86 maintainers" , , , , LKML Subject: Re: [PATCHv7 00/14] mm, x86/cc: Implement support for unaccepted memory Message-ID: <20220624175816.vzwguyo2nd5k6toy@amd.com> References: <20220614120231.48165-1-kirill.shutemov@linux.intel.com> <20220624174057.72dwo7v36lokmoub@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20220624174057.72dwo7v36lokmoub@amd.com> X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: a9547963-9fdd-4c65-7311-08da560b274b X-MS-TrafficTypeDiagnostic: BN8PR12MB3171:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230016)(4636009)(376002)(136003)(346002)(39860400002)(396003)(36840700001)(40470700004)(46966006)(2616005)(6666004)(70586007)(36860700001)(186003)(70206006)(44832011)(1076003)(6916009)(41300700001)(8676002)(478600001)(16526019)(47076005)(316002)(8936002)(86362001)(82740400003)(54906003)(336012)(2906002)(7416002)(4744005)(356005)(426003)(26005)(5660300002)(36756003)(4326008)(40480700001)(82310400005)(81166007)(40460700003)(7406005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jun 2022 17:58:32.9450 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a9547963-9fdd-4c65-7311-08da560b274b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT011.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3171 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 24, 2022 at 12:40:57PM -0500, Michael Roth wrote: > > 1) how to configure OVMF to enable/disable lazy acceptance > - compile time option most likely: accept-all/accept-minimum/accept-1GB > > 2) how to introduce an automatic mode in the future where OVMF does the > right thing based on what the guest supports. Gerd floated the idea of > tying it to ExitBootServices as well, but not sure there's a solid > plan on what to do here yet. > > If that's accurate, it seems like the only 'safe' option is to disable it via > #1 (accept-all), and then when #2 comes along, compile OVMF to just Do The > Right Thing. > > Users who know their VMs implement lazy acceptance can force it on via > accept-all OVMF compile option. accept-min / accept-X I mean.