Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes (mainly Andy's TLS fixes), plus a cleanup"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tls: Disallow unusual TLS segments
  x86/tls: Validate TLS entries to protect espfix
  MAINTAINERS: Add me as x86 VDSO submaintainer
  x86/asm: Unify segment selector defines
  x86/asm: Guard against building the 32/64-bit versions of the asm-offsets*.c file directly
  x86_64, switch_to(): Load TLS descriptors before switching DS and ES
  x86/mm: Use min() instead of min_t() in the e820 printout code
  x86/mm: Fix zone ranges boot printout
  x86/doc: Update documentation after file shuffling

1 files changed, 9 insertions, 21 deletions

diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
index 6f1c3a8a33ab..db257a58571f 100644
--- a/arch/x86/include/asm/segment.h
+++ b/arch/x86/include/asm/segment.h
@@ -23,6 +23,15 @@
 #define GDT_ENTRY_BOOT_TSS      (GDT_ENTRY_BOOT_CS + 2)
 #define __BOOT_TSS              (GDT_ENTRY_BOOT_TSS * 8)
 
+#define SEGMENT_RPL_MASK        0x3 /*
+                                     * Bottom two bits of selector give the ring
+                                     * privilege level
+                                     */
+#define SEGMENT_TI_MASK         0x4 /* Bit 2 is table indicator (LDT/GDT) */
+#define USER_RPL                0x3 /* User mode is privilege level 3 */
+#define SEGMENT_LDT             0x4 /* LDT segment has TI set... */
+#define SEGMENT_GDT             0x0 /* ... GDT has it cleared */
+
 #ifdef CONFIG_X86_32
 /*
  * The layout of the per-CPU GDT under Linux:
@@ -125,16 +134,6 @@
 #define PNP_TS1    (GDT_ENTRY_PNPBIOS_TS1 * 8)  /* transfer data segment */
 #define PNP_TS2    (GDT_ENTRY_PNPBIOS_TS2 * 8)  /* another data segment */
 
-/* Bottom two bits of selector give the ring privilege level */
-#define SEGMENT_RPL_MASK        0x3
-/* Bit 2 is table indicator (LDT/GDT) */
-#define SEGMENT_TI_MASK         0x4
-
-/* User mode is privilege level 3 */
-#define USER_RPL                0x3
-/* LDT segment has TI set, GDT has it cleared */
-#define SEGMENT_LDT             0x4
-#define SEGMENT_GDT             0x0
 
 /*
  * Matching rules for certain types of segments.
@@ -192,17 +191,6 @@
 #define get_kernel_rpl()  0
 #endif
 
-/* User mode is privilege level 3 */
-#define USER_RPL                0x3
-/* LDT segment has TI set, GDT has it cleared */
-#define SEGMENT_LDT             0x4
-#define SEGMENT_GDT             0x0
-
-/* Bottom two bits of selector give the ring privilege level */
-#define SEGMENT_RPL_MASK        0x3
-/* Bit 2 is table indicator (LDT/GDT) */
-#define SEGMENT_TI_MASK         0x4
-
 #define IDT_ENTRIES 256
 #define NUM_EXCEPTION_VECTORS 32
 /* Bitmask of exception vectors which push an error code on the stack */