From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Fleming Subject: Re: [PATCHv7 05/14] x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations Date: Thu, 8 Jun 2017 15:18:42 +0100 Message-ID: <20170608141842.GD3220@codeblueprint.co.uk> References: <20170606113133.22974-1-kirill.shutemov@linux.intel.com> <20170606113133.22974-6-kirill.shutemov@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20170606113133.22974-6-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org To: "Kirill A. Shutemov" Cc: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-Id: linux-arch.vger.kernel.org On Tue, 06 Jun, at 02:31:24PM, Kirill A. Shutemov wrote: > We would need to switch temporarily to compatibility mode during booting > with 5-level paging enabled. It would require 32-bit code segment > descriptor. > > Signed-off-by: Kirill A. Shutemov > Cc: Matt Fleming > --- > arch/x86/boot/compressed/eboot.c | 25 +++++++++++++++++++++++-- > 1 file changed, 23 insertions(+), 2 deletions(-) Reviewed-by: Matt Fleming -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f170.google.com ([209.85.128.170]:36746 "EHLO mail-wr0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751705AbdFHOSp (ORCPT ); Thu, 8 Jun 2017 10:18:45 -0400 Received: by mail-wr0-f170.google.com with SMTP id v111so19213050wrc.3 for ; Thu, 08 Jun 2017 07:18:44 -0700 (PDT) Date: Thu, 8 Jun 2017 15:18:42 +0100 From: Matt Fleming Subject: Re: [PATCHv7 05/14] x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations Message-ID: <20170608141842.GD3220@codeblueprint.co.uk> References: <20170606113133.22974-1-kirill.shutemov@linux.intel.com> <20170606113133.22974-6-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170606113133.22974-6-kirill.shutemov@linux.intel.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: "Kirill A. Shutemov" Cc: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Message-ID: <20170608141842.nszcQz84Ws3cCqmh9wOs_sgRFBGu779rkySx7rOD938@z> On Tue, 06 Jun, at 02:31:24PM, Kirill A. Shutemov wrote: > We would need to switch temporarily to compatibility mode during booting > with 5-level paging enabled. It would require 32-bit code segment > descriptor. > > Signed-off-by: Kirill A. Shutemov > Cc: Matt Fleming > --- > arch/x86/boot/compressed/eboot.c | 25 +++++++++++++++++++++++-- > 1 file changed, 23 insertions(+), 2 deletions(-) Reviewed-by: Matt Fleming