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authorBorislav Petkov <bp@suse.de>2014-12-09 13:25:59 +0100
committerIngo Molnar <mingo@kernel.org>2014-12-11 11:45:03 +0100
commitbe9d1738b17f066b9d2f9e63eb6e2abda997fa1b (patch)
tree275c55218a5b21e52eaef302e415bb6e50ef9b7a /arch/x86/include/asm/segment.h
parentx86/asm: Guard against building the 32/64-bit versions of the asm-offsets*.c ... (diff)
downloadlinux-be9d1738b17f066b9d2f9e63eb6e2abda997fa1b.tar.xz
linux-be9d1738b17f066b9d2f9e63eb6e2abda997fa1b.zip
x86/asm: Unify segment selector defines
Those are identical on 32- and 64-bit, unify them. No functional change. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1418127959-29902-1-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/segment.h')
-rw-r--r--arch/x86/include/asm/segment.h30
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 */