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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 C9D9EC43143 for ; Tue, 2 Oct 2018 00:31:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 81E8421476 for ; Tue, 2 Oct 2018 00:31:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 81E8421476 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726502AbeJBHMF (ORCPT ); Tue, 2 Oct 2018 03:12:05 -0400 Received: from mga07.intel.com ([134.134.136.100]:60079 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725878AbeJBHMF (ORCPT ); Tue, 2 Oct 2018 03:12:05 -0400 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Oct 2018 17:31:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,329,1534834800"; d="scan'208";a="237709868" Received: from hubermic-mobl.ger.corp.intel.com (HELO localhost) ([10.252.54.31]) by orsmga004.jf.intel.com with ESMTP; 01 Oct 2018 17:31:08 -0700 Date: Tue, 2 Oct 2018 03:31:06 +0300 From: Jarkko Sakkinen To: Jethro Beekman Cc: Dave Hansen , Andy Lutomirski , "Christopherson, Sean J" , Andrew Lutomirski , X86 ML , Platform Driver , "nhorman@redhat.com" , "npmccallum@redhat.com" , "Ayoun, Serge" , "shay.katz-zamir@intel.com" , "linux-sgx@vger.kernel.org" , Andy Shevchenko , Dave Hansen , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , LKML Subject: Re: [PATCH v14 09/19] x86/mm: x86/sgx: Signal SEGV_SGXERR for #PFs w/ PF_SGX Message-ID: <20181002003106.GC21814@linux.intel.com> References: <20180926173516.GA10920@linux.intel.com> <2D60780F-ADB4-48A4-AB74-15683493D369@amacapital.net> <9835e288-ba98-2f9e-ac73-504db9512bb9@intel.com> <20180926204400.GA11446@linux.intel.com> <992b1d6d-cc0f-776f-d938-2a1f7cad52c8@intel.com> <20180927135603.GF8242@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 01, 2018 at 09:42:48PM +0000, Jethro Beekman wrote: > 1) Even though the vDSO function exists, userspace may still call > `ENCLU[EENTER]` manually, so the fault handling as described in the current > patch should also be maintained. You mean the way it was is in v13 and not the way it is in v14? > 2) All the information that would normally be provided through the signal > handler (x86 fault number, reason) should be provided to userspace. As I've understood it, this should be just a change in the delivery path. /Jarkko