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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 8E37CC47083 for ; Wed, 2 Jun 2021 18:31:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6826561075 for ; Wed, 2 Jun 2021 18:31:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229489AbhFBScq (ORCPT ); Wed, 2 Jun 2021 14:32:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229468AbhFBScn (ORCPT ); Wed, 2 Jun 2021 14:32:43 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8897C061574 for ; Wed, 2 Jun 2021 11:30:59 -0700 (PDT) Received: from zn.tnic (p200300ec2f0f0e00ae3ef7328f799462.dip0.t-ipconnect.de [IPv6:2003:ec:2f0f:e00:ae3e:f732:8f79:9462]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 438791EC047D; Wed, 2 Jun 2021 20:30:58 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1622658658; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=s2MpVwsPPjHrgo3VWJyqJekulpEUVtwlLcFpp91/3GQ=; b=Y5LJX1L4Y6mXe+niBhG5UBS8zTtMca4U283WO4ITb4qI0XwzAG9Yv6bedaRcsTUl7/ylLN YhPmYPCdLPcxg+GQpt5u3fTF7fQ42VvZ3PAl/XpaQA1a21fo03BMCUbVbvOZUvzTAQeqQd 8vKicnZq0sgVr7Anc5+3rEaPIjhNk20= Date: Wed, 2 Jun 2021 20:30:58 +0200 From: Borislav Petkov To: Tom Lendacky Cc: Kuppuswamy Sathyanarayanan , Peter Zijlstra , Andy Lutomirski , Dave Hansen , Tony Luck , Andi Kleen , Kirill Shutemov , Kuppuswamy Sathyanarayanan , Dan Williams , Raj Ashok , Sean Christopherson , linux-kernel@vger.kernel.org Subject: Re: [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstraction Message-ID: References: <20210527042356.3983284-2-sathyanarayanan.kuppuswamy@linux.intel.com> <20210601211417.2177598-1-sathyanarayanan.kuppuswamy@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 02, 2021 at 01:19:07PM -0500, Tom Lendacky wrote: > This certainly doesn't capture all of the situations where true would need > to be returned. For example, SEV, but not SEV-ES, requires that string I/O > be unrolled, etc. Yeah, I believe this would be better done for you guys, ontop, as you know best what needs to be queried where. So this first patch adding only a stub should be fine. Or you or someone else does the conversion ontop of the Intel patch and then all patches go together. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette