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X-CSE-ConnectionGUID: iCg+6sx/SgmjMUJRTnm5wA== X-CSE-MsgGUID: nEPslIjlQNyBgwVJnd92rw== X-IronPort-AV: E=McAfee;i="6700,10204,11418"; a="35176121" X-IronPort-AV: E=Sophos;i="6.15,249,1739865600"; d="scan'208";a="35176121" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2025 07:46:04 -0700 X-CSE-ConnectionGUID: tOtfHbvtRCakxikDidSRyg== X-CSE-MsgGUID: NUNUyP3eSk+17rK7cbwcBw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,249,1739865600"; d="scan'208";a="134345682" Received: from mdroper-mobl2.amr.corp.intel.com (HELO [10.124.223.46]) ([10.124.223.46]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2025 07:46:03 -0700 Message-ID: <8db47bc1-445b-49db-b932-96aff0eb58a9@intel.com> Date: Tue, 29 Apr 2025 07:46:01 -0700 Precedence: bulk X-Mailing-List: linux-sgx@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/2] x86/sgx: Implement EUPDATESVN and opportunistically call it during first EPC page alloc To: "Reshetova, Elena" , Sean Christopherson Cc: "jarkko@kernel.org" , "Huang, Kai" , "linux-sgx@vger.kernel.org" , "Scarlata, Vincent R" , "x86@kernel.org" , "Annapurve, Vishal" , "Cai, Chong" , "Mallick, Asit K" , "Aktas, Erdem" , "linux-kernel@vger.kernel.org" , "bondarn@google.com" , "dionnaglaze@google.com" , "Raynor, Scott" References: <0d7d6b9a-e7bd-4225-8f08-05bd9473a894@intel.com> <4b4ecaa1-2ace-43bf-b71b-0de78bcf113c@intel.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 4/29/25 04:44, Reshetova, Elena wrote: >> On 4/25/25 14:58, Sean Christopherson wrote: >>> On Fri, Apr 25, 2025, Dave Hansen wrote: >>>> On 4/25/25 14:04, Sean Christopherson wrote: >>>>> Userspace is going to be waiting on ->release() no matter what. >>>> Unless it isn't even involved and it happens automatically. >>> With my Google hat on: no thanks. >> I'm completely open to the idea of adding transparency so that folks can >> tell when the SVN increments. I'm mostly open to having a new ABI to do >> it explicitly in addition to doing it implicitly.] > Could you please clarify here Dave what ABI do you have in mind? I should have said I'm open to *eventually* adding features and new ABI to prod at the SVN state. Not now.