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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 B0BBDC4338F for ; Thu, 19 Aug 2021 09:48:55 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EDAB5610CF for ; Thu, 19 Aug 2021 09:48:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EDAB5610CF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Gr0Mn1CXnz3cRK for ; Thu, 19 Aug 2021 19:48:53 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=q25frNr0; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=casper.srs.infradead.org (client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+308e20cad7c5f5b5e2f7+6570+infradead.org+hch@casper.srs.infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=q25frNr0; dkim-atps=neutral Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Gr0Lw1k0Lz2yNp for ; Thu, 19 Aug 2021 19:48:06 +1000 (AEST) 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=NIZCsGrRQbuo1Iii34pN1v0m0SpMM+x4PkA8jTWERkg=; b=q25frNr0RfbqC0fjoCxNp5/U9p XnS1Itp1kpFsNA/GpDu0yM5K5YaejGcpknYJqfk8EgGP6+4iHFTTLMsGRjmoCzrQgPNE5f0aWiJMP QQ9tLG/1QdIBzMpXUBSA5pPGezmjPq0CJwrYYk/ziy5TebK/nnSrHMZcfb2uIjCNLa4oakg80HoTF YSz/UGMzIuFO8B1+V7x8S7PTgRuTau4iALVZWpphyWlovh+/DBjKAy4vaUD6UbIXav3hhIt7y7OBs dRqDYFfcQQ/aBbwuYMYcW8088vlsXsee7dROmQFMco7Esnk7wRaXkBLBwlTa2FrZ/OuYJHiz30tR2 lqk0CO2A==; Received: from hch by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGedJ-004t0t-0g; Thu, 19 Aug 2021 09:46:56 +0000 Date: Thu, 19 Aug 2021 10:46:45 +0100 From: Christoph Hellwig To: Tom Lendacky Subject: Re: [PATCH v2 02/12] mm: Introduce a function to check for virtualization protection features Message-ID: References: <482fe51f1671c1cd081039801b03db7ec0036332.1628873970.git.thomas.lendacky@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <482fe51f1671c1cd081039801b03db7ec0036332.1628873970.git.thomas.lendacky@amd.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, Sathyanarayanan Kuppuswamy , linux-efi@vger.kernel.org, Brijesh Singh , kvm@vger.kernel.org, Tianyu Lan , Joerg Roedel , x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, platform-driver-x86@vger.kernel.org, iommu@lists.linux-foundation.org, Andi Kleen , linux-graphics-maintainer@vmware.com, dri-devel@lists.freedesktop.org, Joerg Roedel , linux-fsdevel@vger.kernel.org, Borislav Petkov , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, Aug 13, 2021 at 11:59:21AM -0500, Tom Lendacky wrote: > +#define PATTR_MEM_ENCRYPT 0 /* Encrypted memory */ > +#define PATTR_HOST_MEM_ENCRYPT 1 /* Host encrypted memory */ > +#define PATTR_GUEST_MEM_ENCRYPT 2 /* Guest encrypted memory */ > +#define PATTR_GUEST_PROT_STATE 3 /* Guest encrypted state */ Please write an actual detailed explanaton of what these mean, that is what implications it has on the kernel.