From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f71.google.com (mail-wm0-f71.google.com [74.125.82.71]) by kanga.kvack.org (Postfix) with ESMTP id 355636B0292 for ; Tue, 20 Jun 2017 04:26:00 -0400 (EDT) Received: by mail-wm0-f71.google.com with SMTP id n67so2156231wmi.7 for ; Tue, 20 Jun 2017 01:26:00 -0700 (PDT) Received: from mail.skyhub.de (mail.skyhub.de. [5.9.137.197]) by mx.google.com with ESMTP id p40si12776912wrc.390.2017.06.20.01.25.58 for ; Tue, 20 Jun 2017 01:25:58 -0700 (PDT) Date: Tue, 20 Jun 2017 10:25:44 +0200 From: Borislav Petkov Subject: Re: [PATCH v7 11/36] x86/mm: Add SME support for read_cr3_pa() Message-ID: <20170620082544.uci6unwh4xum5k7n@pd.tnic> References: <20170616184947.18967.84890.stgit@tlendack-t1.amdoffice.net> <20170616185154.18967.71073.stgit@tlendack-t1.amdoffice.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20170616185154.18967.71073.stgit@tlendack-t1.amdoffice.net> Sender: owner-linux-mm@kvack.org List-ID: 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, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, xen-devel@lists.xen.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Brijesh Singh , Toshimitsu Kani , Radim =?utf-8?B?S3LEjW3DocWZ?= , Matt Fleming , Alexander Potapenko , "H. Peter Anvin" , Larry Woodman , Jonathan Corbet , Joerg Roedel , "Michael S. Tsirkin" , Ingo Molnar , Andrey Ryabinin , Dave Young , Rik van Riel , Arnd Bergmann , Konrad Rzeszutek Wilk , Andy Lutomirski , Boris Ostrovsky , Dmitry Vyukov , Juergen Gross , Thomas Gleixner , Paolo Bonzini On Fri, Jun 16, 2017 at 01:51:55PM -0500, Tom Lendacky wrote: > The cr3 register entry can contain the SME encryption mask that indicates > the PGD is encrypted. The encryption mask should not be used when > creating a virtual address from the cr3 register, so remove the SME > encryption mask in the read_cr3_pa() function. > > During early boot SME will need to use a native version of read_cr3_pa(), > so create native_read_cr3_pa(). > > Signed-off-by: Tom Lendacky > --- > arch/x86/include/asm/processor-flags.h | 3 ++- > arch/x86/include/asm/processor.h | 5 +++++ > 2 files changed, 7 insertions(+), 1 deletion(-) Reviewed-by: Borislav Petkov -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org