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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 E7A86C3A5A1 for ; Thu, 22 Aug 2019 16:20:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C305621743 for ; Thu, 22 Aug 2019 16:20:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388459AbfHVQUJ (ORCPT ); Thu, 22 Aug 2019 12:20:09 -0400 Received: from mga05.intel.com ([192.55.52.43]:43213 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729718AbfHVQUJ (ORCPT ); Thu, 22 Aug 2019 12:20:09 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Aug 2019 09:20:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,417,1559545200"; d="scan'208";a="190637600" Received: from greathea-mobl2.ger.corp.intel.com ([10.252.39.37]) by orsmga002.jf.intel.com with ESMTP; 22 Aug 2019 09:20:06 -0700 Message-ID: Subject: Re: [PATCH 2/5] x86/sgx: Use memchr_inv() in sgx_validate_secinfo() From: Jarkko Sakkinen To: Sean Christopherson Cc: linux-sgx@vger.kernel.org, Sean Christopherson , Shay Katz-zamir , Serge Ayoun Date: Thu, 22 Aug 2019 19:20:04 +0300 In-Reply-To: <20190822034713.GT29345@linux.intel.com> References: <20190819152544.7296-1-jarkko.sakkinen@linux.intel.com> <20190819152544.7296-3-jarkko.sakkinen@linux.intel.com> <20190822034713.GT29345@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.32.2-1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On Wed, 2019-08-21 at 20:47 -0700, Sean Christopherson wrote: > > + if (memchr_inv(secinfo->reserved, 0, SGX_SECINFO_RESERVED_SIZE)) > > Doing 'sizeof(secinfo->reserved)' would be preferable, that way we're not > dependent on SGX_SECINFO_RESERVED_SIZE being in bytes (I had to check). > > Obviously not in this patch, but the same cleanup can be applied to > sgx_validate_secs(). Thanks for the valid remark, I squashed with that change. I also edited prepending commit and removed the constant altogether. /Jarkko