Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B4D7C433EF for ; Mon, 13 Dec 2021 17:43:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238161AbhLMRno (ORCPT ); Mon, 13 Dec 2021 12:43:44 -0500 Received: from mga17.intel.com ([192.55.52.151]:15386 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234226AbhLMRno (ORCPT ); Mon, 13 Dec 2021 12:43:44 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1639417423; x=1670953423; h=subject:to:cc:references:from:message-id:date: mime-version:in-reply-to:content-transfer-encoding; bh=dueVn40VBiXuZM12Hm490PDfqc2WxRDefTyn6lDCgd8=; b=EEbMMdGmFSJKhe1xihFEp7FpNG6sBojxsBzZn7M8n1fH2nd3QWQAgLDU UlsCyWpvvRsdho7hcc7OBBdwPeBQ+HSmqxKbi8ZgpllMS/tx0OEiGlnw/ RekDtuxHf0LABgwzp5OEndR3mJcCBs3fp51QjPOuLMADLDD8CKgAaNRFb GYd9tLjPF0WjV+Efq0379pnn9xduNtOaf0px8SmtAKKm2sS/pHMGv7mPl Db+Dx84soGyjOEiH9YD19TVoT/zu+0z3yJR4bg/pIXLqGs3w6Ch5iQY2M WXsm+8LJQ5E2jSO7xDSjMjB+dhldopHPUVvcTMwW/ZlMjBARWlb9uBhGG g==; X-IronPort-AV: E=McAfee;i="6200,9189,10197"; a="219469020" X-IronPort-AV: E=Sophos;i="5.88,203,1635231600"; d="scan'208";a="219469020" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Dec 2021 09:43:42 -0800 X-IronPort-AV: E=Sophos;i="5.88,203,1635231600"; d="scan'208";a="752343182" Received: from chenb-mobl1.amr.corp.intel.com (HELO [10.212.210.237]) ([10.212.210.237]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Dec 2021 09:43:40 -0800 Subject: Re: [PATCH 16/25] x86/sgx: Support modifying SGX page type To: Jarkko Sakkinen , Reinette Chatre Cc: dave.hansen@linux.intel.com, tglx@linutronix.de, bp@alien8.de, luto@kernel.org, mingo@redhat.com, linux-sgx@vger.kernel.org, x86@kernel.org, seanjc@google.com, kai.huang@intel.com, cathy.zhang@intel.com, cedric.xing@intel.com, haitao.huang@intel.com, mark.shanahan@intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org References: <2a269a4dde2976f7aaf17de9c4a7fca3552e9c7a.camel@kernel.org> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <2a269a4dde2976f7aaf17de9c4a7fca3552e9c7a.camel@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/11/21 12:02 AM, Jarkko Sakkinen wrote: > On Mon, 2021-12-06 at 13:48 -0800, Reinette Chatre wrote: >>> I'd suggest to change this as SGX_IOC_ENCLAVE_MODIFY_TYPE. >> How about SGX_IOC_ENCLAVE_MOD_TYPE to be consistent with your earlier >> suggestion of SGX_IOC_ENCLAVE_MOD_PROTECTIONS ? > I think it would be best to introduce only one new ioctl that would > be capable of doing either operation (and use secinfo as a vessel > for additional data). Why? I don't think we should try to multiplex within an ioctl(). Just create a second ioctl().