Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750941AbdCVVdQ (ORCPT ); Wed, 22 Mar 2017 17:33:16 -0400 Received: from mail.kernel.org ([198.145.29.136]:42474 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751398AbdCVVdF (ORCPT ); Wed, 22 Mar 2017 17:33:05 -0400 From: Andy Lutomirski To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Borislav Petkov , Boris Ostrovsky , Juergen Gross , Thomas Garnier , Andy Lutomirski Subject: [PATCH 0/7] Misc GDT fixes and a cleanup Date: Wed, 22 Mar 2017 14:32:28 -0700 Message-Id: X-Mailer: git-send-email 2.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1903 Lines: 46 Hi all- This applies to tip:x86/mm. For ease of testing, the series is here, too: https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/tag/?h=review_20170322_gdt_and_wp This fixes a few issues, most of which appear to be rather old. For whatever reason, Thomas' GDT series unearthed them. (And one is a genuine bug in Thomas' code but, in his defense, he might have cut-and-pasted it verbatim from the identical bug in the EFI code.) The last three patches are cleanups I did while tracking these down. Boris, any chance you could test this series on Xen? The 64-bit case works for me, but I'm having issues testing on 32-bit right now. Ingo, the first patch should address your concerns from the earlier version. Andy Lutomirski (7): selftests/x86/ldt_gdt_32: Work around a glibc sigaction bug x86/gdt: Fix setup_fixmap_gdt() to use the correct PA x86/efi/32: Fix EFI on systems where the percpu GDT is virtually mapped x86/boot/32: Defer resyncing initial_page_table until percpu is set up x86/gdt: Get rid of the get_*_gdt_*_vaddr() helpers x86/xen/gdt: Use X86_FEATURE_XENPV instead of globals for the GDT fixup x86/boot/32: Rewrite test_wp_bit() arch/x86/include/asm/desc.h | 21 +++------------- arch/x86/include/asm/processor.h | 2 -- arch/x86/kernel/cpu/common.c | 28 ++++++++++++--------- arch/x86/kernel/cpu/proc.c | 5 ++-- arch/x86/kernel/setup.c | 17 ------------- arch/x86/kernel/setup_percpu.c | 21 ++++++++++++++++ arch/x86/kvm/vmx.c | 4 +-- arch/x86/mm/init_32.c | 44 +++++++-------------------------- arch/x86/platform/efi/efi_32.c | 2 +- arch/x86/xen/enlighten.c | 4 --- tools/testing/selftests/x86/ldt_gdt.c | 46 +++++++++++++++++++++++++++++++++++ 11 files changed, 101 insertions(+), 93 deletions(-) -- 2.9.3