From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753895AbdLDMmJ (ORCPT ); Mon, 4 Dec 2017 07:42:09 -0500 Received: from mga03.intel.com ([134.134.136.65]:63375 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753802AbdLDMmH (ORCPT ); Mon, 4 Dec 2017 07:42:07 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,359,1508828400"; d="scan'208";a="12827307" From: "Kirill A. Shutemov" To: Ingo Molnar , x86@kernel.org, Thomas Gleixner , "H. Peter Anvin" Cc: Linus Torvalds , Andy Lutomirski , Cyrill Gorcunov , Borislav Petkov , Andi Kleen , linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv3 0/5] x86: 5-level related changes into decompression code Date: Mon, 4 Dec 2017 15:40:54 +0300 Message-Id: <20171204124059.63515-1-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.15.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Ingo, Here's updated changes that prepare the code to boot-time switching between paging modes and handle booting in 5-level mode when bootloader put kernel image above 4G, but haven't enabled 5-level paging for us. First two patches can be backported to v4.14 to provide sensible error message when CONFIG_X86_5LEVEL=y kernel is booted on hardware that doesn't support the feature. Please review and consider applying. Kirill A. Shutemov (5): x86/boot/compressed/64: Detect and handle 5-level paging at boot-time x86/boot/compressed/64: Print error if 5-level paging is not supported x86/boot/compressed/64: Rename pagetable.c to kaslr_64.c x86/boot/compressed/64: Introduce place_trampoline() x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G arch/x86/boot/compressed/Makefile | 3 +- arch/x86/boot/compressed/head_64.S | 108 +++++++++++++-------- .../boot/compressed/{pagetable.c => kaslr_64.c} | 0 arch/x86/boot/compressed/misc.c | 16 +++ arch/x86/boot/compressed/pgtable.h | 18 ++++ arch/x86/boot/compressed/pgtable_64.c | 61 ++++++++++++ 6 files changed, 166 insertions(+), 40 deletions(-) rename arch/x86/boot/compressed/{pagetable.c => kaslr_64.c} (100%) create mode 100644 arch/x86/boot/compressed/pgtable.h create mode 100644 arch/x86/boot/compressed/pgtable_64.c -- 2.15.0