From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935192AbcIGPzm (ORCPT ); Wed, 7 Sep 2016 11:55:42 -0400 Received: from mail.skyhub.de ([78.46.96.112]:55337 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751219AbcIGPzj (ORCPT ); Wed, 7 Sep 2016 11:55:39 -0400 Date: Wed, 7 Sep 2016 17:55:35 +0200 From: Borislav Petkov To: Tom Lendacky Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Radim =?utf-8?B?S3LEjW3DocWZ?= , Arnd Bergmann , Jonathan Corbet , Matt Fleming , Joerg Roedel , Konrad Rzeszutek Wilk , Andrey Ryabinin , Ingo Molnar , Andy Lutomirski , "H. Peter Anvin" , Paolo Bonzini , Alexander Potapenko , Thomas Gleixner , Dmitry Vyukov Subject: Re: [RFC PATCH v2 07/20] x86: Provide general kernel support for memory encryption Message-ID: <20160907155535.i7wh46uxxa2bj3ik@pd.tnic> References: <20160822223529.29880.50884.stgit@tlendack-t1.amdoffice.net> <20160822223646.29880.28794.stgit@tlendack-t1.amdoffice.net> <20160906093113.GA18319@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/ (1.7.0) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 07, 2016 at 09:30:54AM -0500, Tom Lendacky wrote: > _PAGE_ENC is #defined as sme_me_mask and sme_me_mask has already been > set (or not set) at this point - so it will be the mask if SME is > active or 0 if SME is not active. Yeah, I remember :-) > sme_early_init() is merely propagating the mask to other structures. > Since early_pmd_flags is mainly used in this file (one line in > head_64.S is the other place) I felt it best to modify it here. But it > can always be moved if you feel that is best. Hmm, so would it work then if you stick it in early_pmd_flags' definition like you do with the other masks? I.e., pmdval_t early_pmd_flags = __PAGE_KERNEL_LARGE | _PAGE_ENC & ~(_PAGE_GLOBAL | _PAGE_NX); -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.