Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2608a6584a0a32d3251dfafad31d9f8b2c784466 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) #define TLS_SIZE (GDT_ENTRY_TLS_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 + #endif - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html