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 00DD6C432BE for ; Wed, 28 Jul 2021 13:24:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DDB5B6101B for ; Wed, 28 Jul 2021 13:24:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236310AbhG1NYS (ORCPT ); Wed, 28 Jul 2021 09:24:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233315AbhG1NYR (ORCPT ); Wed, 28 Jul 2021 09:24:17 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A77F2C061757; Wed, 28 Jul 2021 06:24:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=wyV5oHahoyFyDlkMKSruinnsahdkugSgLawjHfbEEjQ=; b=CxvZX41K0o1QkS+QNIrwd0eOBe mqQ6PrksWIat6lXJKZPun+q1pAOQx0xLcn0dXI0f5/QwQmDJVibY4qE3c7TAdHgsIiPO3KhQic7GW 1eyfOJ6+e5m0vdD3PZ+UIsWjdf71Rv+qjxbud/TVWu09HUCIEgoxhatZ/TSoyrl9g8w0xVsK0qnJb Ssgb2vj86C8FXbvbGsNNF9o/MH3FUfh7M9nUfPwhEPmwHvq/+B3ENaQ00GINALSLZBrB8jUNO3eAN ZD343FSM3tMyDXd6949QP8wSOuEJ0mt327HB6lpEtnWhWjFhF6Z9hGOLbHanuC9ie9QiNGCSpAJVM Xwq8/NVQ==; Received: from hch by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8jWV-00G5AN-CH; Wed, 28 Jul 2021 13:23:16 +0000 Date: Wed, 28 Jul 2021 14:22:59 +0100 From: Christoph Hellwig To: Tom Lendacky Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, Andi Kleen , Tianyu Lan , Peter Zijlstra , Dave Hansen , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Brijesh Singh , Thomas Gleixner Subject: Re: [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 27, 2021 at 05:26:05PM -0500, Tom Lendacky via iommu wrote: > Introduce an x86 version of the prot_guest_has() function. This will be > used in the more generic x86 code to replace vendor specific calls like > sev_active(), etc. > > While the name suggests this is intended mainly for guests, it will > also be used for host memory encryption checks in place of sme_active(). > > The amd_prot_guest_has() function does not use EXPORT_SYMBOL_GPL for the > same reasons previously stated when changing sme_active(), sev_active and None of that applies here as none of the callers get pulled into random macros. The only case of that is sme_me_mask through sme_mask, but that's not something this series replaces as far as I can tell.