From: H. Peter Anvin <[email protected]> Add symbolic constants for the segment selectors/GDT slots used by the setup code, for consistency with i386. Signed-off-by: H. Peter Anvin <[email protected]> --- include/asm-x86_64/segment.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/include/asm-x86_64/segment.h b/include/asm-x86_64/segment.h index adf2bf1..04b8ab2 100644 --- a/include/asm-x86_64/segment.h +++ b/include/asm-x86_64/segment.h @@ -3,6 +3,14 @@ #include <asm/cache.h> +/* Simple and small GDT entries for booting only */ + +#define GDT_ENTRY_BOOT_CS 2 +#define __BOOT_CS (GDT_ENTRY_BOOT_CS * 8) + +#define GDT_ENTRY_BOOT_DS (GDT_ENTRY_BOOT_CS + 1) +#define __BOOT_DS (GDT_ENTRY_BOOT_DS * 8) + #define __KERNEL_CS 0x10 #define __KERNEL_DS 0x18 -- 1.5.2.2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
- References:
- x86 setup code rewrite in C - revised
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 01/33] x86 setup: MAINTAINERS: formally take responsibility for the i386 boot code
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 02/33] hd.c: remove BIOS/CMOS queries
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 03/33] include/asm-i386/boot.h: This is <asm/boot.h>, not <linux/boot.h>
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 04/33] Unify the CPU features vectors between i386 and x86-64
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 05/33] Change CONFIG_X86_MINIMUM_CPU_MODEL to CONFIG_X86_MINIMUM_CPU_FAMILY
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 06/33] Clean up struct screen_info (<linux/screen_info.h>)
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 07/33] Use a new CPU feature word to cover all Intel features that are spread around
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 08/33] Define zero-page offset 0x1e4 as a scratch field, and use it
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 09/33] Make definitions for struct e820entry and struct e820map consistent
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 10/33] Make struct boot_params a real structure, and remove obsolete fields
- From: "H. Peter Anvin" <[email protected]>
- [x86 setup 11/33] x86-64: add CONFIG_PHYSICAL_ALIGN for consistency with i386
- From: "H. Peter Anvin" <[email protected]>
- x86 setup code rewrite in C - revised
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