From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f198.google.com (mail-pf1-f198.google.com [209.85.210.198]) by kanga.kvack.org (Postfix) with ESMTP id E2E5C8E0001 for ; Fri, 11 Jan 2019 09:30:37 -0500 (EST) Received: by mail-pf1-f198.google.com with SMTP id 68so10452704pfr.6 for ; Fri, 11 Jan 2019 06:30:37 -0800 (PST) Received: from mail.kernel.org (mail.kernel.org. [198.145.29.99]) by mx.google.com with ESMTPS id h5si23104310pfg.233.2019.01.11.06.30.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 11 Jan 2019 06:30:36 -0800 (PST) From: Greg Kroah-Hartman Subject: [PATCH 4.14 019/105] x86/dump_pagetables: Fix LDT remap address marker Date: Fri, 11 Jan 2019 15:13:50 +0100 Message-Id: <20190111131104.844827246@linuxfoundation.org> In-Reply-To: <20190111131102.899065735@linuxfoundation.org> References: <20190111131102.899065735@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Kirill A. Shutemov" , Thomas Gleixner , bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, boris.ostrovsky@oracle.com, jgross@suse.com, bhe@redhat.com, hans.van.kranenburg@mendix.com, linux-mm@kvack.org, xen-devel@lists.xenproject.org, Sasha Levin 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 254eb5505ca0ca749d3a491fc6668b6c16647a99 ] The LDT remap placement has been changed. It's now placed before the direct mapping in the kernel virtual address space for both paging modes. Change address markers order accordingly. Fixes: d52888aa2753 ("x86/mm: Move LDT remap out of KASLR region on 5-level paging") Signed-off-by: Kirill A. Shutemov Signed-off-by: Thomas Gleixner Cc: bp@alien8.de Cc: hpa@zytor.com Cc: dave.hansen@linux.intel.com Cc: luto@kernel.org Cc: peterz@infradead.org Cc: boris.ostrovsky@oracle.com Cc: jgross@suse.com Cc: bhe@redhat.com Cc: hans.van.kranenburg@mendix.com Cc: linux-mm@kvack.org Cc: xen-devel@lists.xenproject.org Link: https://lkml.kernel.org/r/20181130202328.65359-3-kirill.shutemov@linux.intel.com Signed-off-by: Sasha Levin --- arch/x86/mm/dump_pagetables.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index cf403e057f3f..6bca45d06676 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -51,10 +51,10 @@ struct addr_marker { enum address_markers_idx { USER_SPACE_NR = 0, KERNEL_SPACE_NR, - LOW_KERNEL_NR, -#if defined(CONFIG_MODIFY_LDT_SYSCALL) && defined(CONFIG_X86_5LEVEL) +#ifdef CONFIG_MODIFY_LDT_SYSCALL LDT_NR, #endif + LOW_KERNEL_NR, VMALLOC_START_NR, VMEMMAP_START_NR, #ifdef CONFIG_KASAN @@ -62,9 +62,6 @@ enum address_markers_idx { KASAN_SHADOW_END_NR, #endif CPU_ENTRY_AREA_NR, -#if defined(CONFIG_MODIFY_LDT_SYSCALL) && !defined(CONFIG_X86_5LEVEL) - LDT_NR, -#endif #ifdef CONFIG_X86_ESPFIX64 ESPFIX_START_NR, #endif -- 2.19.1