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Tue, 27 Aug 2024 23:25:29 +0000 Message-ID: Date: Wed, 28 Aug 2024 11:25:17 +1200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v16 14/16] x86/sgx: Turn on per-cgroup EPC reclamation To: Haitao Huang , , , , , , , , , , , , , , , CC: , , , , , , , References: <20240821015404.6038-1-haitao.huang@linux.intel.com> <20240821015404.6038-15-haitao.huang@linux.intel.com> Content-Language: en-US From: "Huang, Kai" In-Reply-To: <20240821015404.6038-15-haitao.huang@linux.intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BYAPR08CA0058.namprd08.prod.outlook.com (2603:10b6:a03:117::35) To BL1PR11MB5978.namprd11.prod.outlook.com (2603:10b6:208:385::18) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL1PR11MB5978:EE_|PH8PR11MB6754:EE_ X-MS-Office365-Filtering-Correlation-Id: 6b683cf8-703a-4455-dcb7-08dcc6ef8a0d X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|366016|1800799024|376014|921020; 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But all reclaimable EPC > pages are still tracked in the global LRU as sgx_epc_page_lru() always > returns reference to the global LRU. > > Change sgx_epc_page_lru() to return the LRU of the cgroup in which the > given EPC page is allocated. > > Update sgx_can_reclaim_global(), to check emptiness of LRUs of all > cgroups, and update sgx_reclaim_pages_global(), to utilize > sgx_cgroup_reclaim_pages_global(), when EPC cgroup is enabled. > > With these changes, the global reclamation and per-cgroup reclamation > both work properly with all pages tracked in per-cgroup LRUs. > > Co-developed-by: Sean Christopherson > Signed-off-by: Sean Christopherson > Signed-off-by: Kristen Carlson Accardi > Co-developed-by: Haitao Huang > Signed-off-by: Haitao Huang > Reviewed-by: Jarkko Sakkinen Reviewed-by: Kai Huang