Received: by 2002:a25:1104:0:0:0:0:0 with SMTP id 4csp807182ybr; Fri, 22 May 2020 21:21:37 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy/HTLPT2ODmcZHHUN/tsiIWPd5gkJSDcEl/AZle01x41KMhfheR8qdb/HNj08rT70JQBOo X-Received: by 2002:a17:906:46d3:: with SMTP id k19mr11344990ejs.349.1590207697289; Fri, 22 May 2020 21:21:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1590207697; cv=none; d=google.com; s=arc-20160816; b=hJazybNS6ehzOrGSPnY+DFl8gPn0owNL/SglsarmaPAbpYW4sJaFFDXENawwd1tbnx N7PlCxez8QsEr7n3uL+0KqEHC9LvopJUrrBllT4NF4hxCulJCz9VGdAxc1zhLnGTVVjO 30bH8Roxj5wIExABi7BQeuuOLgUKOkCB16HNyZqa60wrmP+6nbfMurQTDjiaY7+8Vu0g sJff4Z+rmSEFpjm5kLAwoW7wjMClC996zzx2wzdSD8bJpZK2lsUgv+65wmPUiY0puZfM CPonJyS/qXGjmjTTMvyiJ0NZHDfMid9Wj/0X1fREDC5PevueoYhhuaTKPP27eCSpJ+Ef 2Ccw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :ironport-sdr:ironport-sdr; bh=Ac4+EXOMS10A8pRi4KRTV48c0MQal+I3p6BGVtdRV6E=; b=1GzWtn8fEAxwCBWXWyG5UO7VfmZCWIe4c9emODtVIneBxhLsZV/+pyfk21QIjS4glU fdt/hBSPXWtE5HvTwLtY0OGf6JaoFlwsl4TpNO0RdldqV0d6/U5yhQ+HsTK25AUPHJP5 hI2xo0zju0S3J3JoN1M9mv4LSHxn2etFB5CnRj7HjlWQWAACKN5Kvv68KFP5R2TDFkzh vjeENnicRmoQ1dKoxigAVRwHoXfVV1R8fQR+dNLsu1AOdDUqW10OU5W/UkdB/IHOrqh5 J86Yf9BTkmmmDa1CNxE6lk06SysTpWN/ubsdOUqKlXmUq61FMDHNQhXJSx+JSiViUwT7 5z3Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m20si5810113ejr.172.2020.05.22.21.21.14; Fri, 22 May 2020 21:21:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727895AbgEWETa (ORCPT + 99 others); Sat, 23 May 2020 00:19:30 -0400 Received: from mga01.intel.com ([192.55.52.88]:13131 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725294AbgEWET3 (ORCPT ); Sat, 23 May 2020 00:19:29 -0400 IronPort-SDR: Keyzep65a6EtPqBqxEVdyUlXeauHDlRuhIX2DaRAgMtDcvm52Q1Ont+y2n3qcLJfDDmUMoiq/g hFZ/KrCpmDfA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 May 2020 21:19:29 -0700 IronPort-SDR: rpiurWJ+oFUBqukQpqVgrxtkeoWbz5PLleNm/cebf4hgnIWdDiecDJMq06DaOoVkyYVDps+yT/ YTe87xmjt94w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,424,1583222400"; d="scan'208";a="467494390" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.21]) by fmsmga006.fm.intel.com with ESMTP; 22 May 2020 21:19:28 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id 4D93F301A90; Fri, 22 May 2020 21:19:28 -0700 (PDT) Date: Fri, 22 May 2020 21:19:28 -0700 From: Andi Kleen To: Don Porter Cc: Jarkko Sakkinen , Thomas Gleixner , Sasha Levin , linux-kernel@vger.kernel.org, bp@alien8.de, luto@kernel.org, hpa@zytor.com, dave.hansen@intel.com, tony.luck@intel.com, ravi.v.shankar@intel.com, chang.seok.bae@intel.com Subject: Re: Re: [PATCH v12 00/18] Enable FSGSBASE instructions Message-ID: <20200523041928.GU499505@tassilo.jf.intel.com> References: <20200511045311.4785-1-sashal@kernel.org> <0186c22a8a6be1516df0703c421faaa581041774.camel@linux.intel.com> <20200515164013.GF29995@sasha-vm> <20200518153407.GA499505@tassilo.jf.intel.com> <371e6a92cad25cbe7a8489785efa7d3457ecef3b.camel@linux.intel.com> <87v9ksvoaq.fsf@nanos.tec.linutronix.de> <20200519164853.GA19706@linux.intel.com> <7eb45e02-03bf-0af0-c915-794bf49d66d7@cs.unc.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7eb45e02-03bf-0af0-c915-794bf49d66d7@cs.unc.edu> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Setting the fs register in userspace is an essential feature for running > legacy code in SGX. We have been following LKML discussions on this > instruction for years, and hoping this feature would be supported by Linux, If you need a feature you should comment on it. One of the reasons it took so long is that the users didn't speak up. -Andi