Commit:     2608a6584a0a32d3251dfafad31d9f8b2c784466
Parent:     fb7fa8f1741c91f6c6e958762155abe9339476ca
Author:     Roland McGrath <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:30:48 2008 +0100
Committer:  Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:30:48 2008 +0100

    x86: segment selector macros
    This copies into asm-x86/segment_64.h some macros from asm-x86/segment_32.h
    for dissecting segment selectors.  This lets other code use these macros
    uniformly on 32/64-bit rather than duplicating the constants elsewhere.
    Signed-off-by: Roland McGrath <[EMAIL PROTECTED]>
    Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
    Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
 include/asm-x86/segment_64.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/include/asm-x86/segment_64.h b/include/asm-x86/segment_64.h
index 04b8ab2..dce7421 100644
--- a/include/asm-x86/segment_64.h
+++ b/include/asm-x86/segment_64.h
@@ -50,4 +50,15 @@
 #define GDT_SIZE (GDT_ENTRIES * 8)
+/* 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
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