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X-IronPort-AV: E=McAfee;i="6600,9927,10867"; a="389892051" X-IronPort-AV: E=Sophos;i="6.03,235,1694761200"; d="scan'208";a="389892051" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Oct 2023 06:55:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10867"; a="756596405" X-IronPort-AV: E=Sophos;i="6.03,235,1694761200"; d="scan'208";a="756596405" Received: from asomasun-mobl3.amr.corp.intel.com (HELO [10.209.45.156]) ([10.209.45.156]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Oct 2023 06:55:13 -0700 Message-ID: <11413ca0-a8a9-4f73-8006-2e1231dbb390@intel.com> Date: Wed, 18 Oct 2023 06:55:12 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 12/18] x86/sgx: Add EPC OOM path to forcefully reclaim EPC Content-Language: en-US To: Haitao Huang , =?UTF-8?Q?Michal_Koutn=C3=BD?= Cc: "Christopherson,, Sean" , "Huang, Kai" , "Zhang, Bo" , "linux-sgx@vger.kernel.org" , "cgroups@vger.kernel.org" , "yangjie@microsoft.com" , "dave.hansen@linux.intel.com" , "Li, Zhiquan1" , "linux-kernel@vger.kernel.org" , "mingo@redhat.com" , "tglx@linutronix.de" , "tj@kernel.org" , "anakrish@microsoft.com" , "jarkko@kernel.org" , "hpa@zytor.com" , "mikko.ylinen@linux.intel.com" , "Mehta, Sohil" , "bp@alien8.de" , "x86@kernel.org" , "kristen@linux.intel.com" References: <1f7a740f3acff8a04ec95be39864fb3e32d2d96c.camel@intel.com> <631f34613bcc8b5aa41cf519fa9d76bcd57a7650.camel@intel.com> <35a7fde056037a40b3b4b170e2ecd45bf8c4ba9f.camel@intel.com> <915907d56861ef4aa7f9f68e0eb8d136a60bee39.camel@intel.com> <6lrq4xmk42zteq6thpyah7jy25rmvkp7mqxtll6sl7z62m7n4m@vrbbedtgxeq4> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Wed, 18 Oct 2023 06:55:34 -0700 (PDT) On 10/17/23 21:37, Haitao Huang wrote: > Yes we can introduce misc.reclaim to give user a knob to forcefully > reducing usage if that is really needed in real usage. The semantics > would make force-kill VMs explicit to user. Do any other controllers do something like this? It seems odd.