linux-kernel - [tip:x86/urgent] x86/dump_pagetables: Fix LDT remap address marker

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Date:   Tue, 11 Dec 2018 02:34:28 -0800
From:   "tip-bot for Kirill A. Shutemov" <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, hpa@...or.com, kirill.shutemov@...ux.intel.com,
        mingo@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip:x86/urgent] x86/dump_pagetables: Fix LDT remap address marker

Commit-ID:  254eb5505ca0ca749d3a491fc6668b6c16647a99
Gitweb:     https://git.kernel.org/tip/254eb5505ca0ca749d3a491fc6668b6c16647a99
Author:     Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
AuthorDate: Fri, 30 Nov 2018 23:23:28 +0300
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 11 Dec 2018 11:19:24 +0100

x86/dump_pagetables: Fix LDT remap address marker

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 <kirill.shutemov@...ux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: bp@...en8.de
Cc: hpa@...or.com
Cc: dave.hansen@...ux.intel.com
Cc: luto@...nel.org
Cc: peterz@...radead.org
Cc: boris.ostrovsky@...cle.com
Cc: jgross@...e.com
Cc: bhe@...hat.com
Cc: hans.van.kranenburg@...dix.com
Cc: linux-mm@...ck.org
Cc: xen-devel@...ts.xenproject.org
Link: https://lkml.kernel.org/r/20181130202328.65359-3-kirill.shutemov@linux.intel.com

---
 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 dad153e5a427..abcb8d00b014 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -55,10 +55,10 @@ 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
@@ -66,9 +66,6 @@ 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