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 X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83434C31E46 for ; Wed, 12 Jun 2019 15:16:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5ACFA2082C for ; Wed, 12 Jun 2019 15:16:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729485AbfFLPQL (ORCPT ); Wed, 12 Jun 2019 11:16:11 -0400 Received: from mga11.intel.com ([192.55.52.93]:36284 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729332AbfFLPQL (ORCPT ); Wed, 12 Jun 2019 11:16:11 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Jun 2019 08:16:10 -0700 X-ExtLoop1: 1 Received: from mderosix-mobl.ger.corp.intel.com (HELO localhost) ([10.249.34.159]) by fmsmga004.fm.intel.com with ESMTP; 12 Jun 2019 08:16:07 -0700 Date: Wed, 12 Jun 2019 18:16:05 +0300 From: Jarkko Sakkinen To: Sean Christopherson Cc: linux-sgx@vger.kernel.org, Dave Hansen , Cedric Xing , Andy Lutomirski , Jethro Beekman , "Dr . Greg Wettstein" Subject: Re: [PATCH 0/7] x86/sgx: Clean up and enhance add pages ioctl Message-ID: <20190612151605.GB5723@linux.intel.com> References: <20190605194845.926-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190605194845.926-1-sean.j.christopherson@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On Wed, Jun 05, 2019 at 12:48:38PM -0700, Sean Christopherson wrote: > This series is intended to be included in v21 of Jarkko's SGX series and > applies on Jarkko's current master: > > dfc89a83b5bc ("docs: x86/sgx: Document the enclave API") > > The primary goal of the series is to tweak the ioctl for adding pages to > an enclave so that it is somewhat extensible, e.g. add a flags field that > can be reused for access control integration and SGX2/EAUG, and add a size > field so that multiple pages can be added in a single call (batching EADD > has been mentioned at various times in the past). > > The secondary goal is to improve the performance of building enclaves. > Handling multiple pages in a single call helps somewhat, but the real win > (for some enclaves) is using the kernel's zero page as the source for EADD > when possible. For v21 I will add 1, 2 and 6 from these. Thanks. I'll change the size or mrmask field to 32 bits. /Jarkko