diff options
| author | Glauber Costa <gcosta@redhat.com> | 2008-05-28 16:19:53 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 12:48:16 +0200 |
| commit | a939098afcfa5f81d3474782ec15c6d114e57763 (patch) | |
| tree | 62c21fb10d6b58dc8247c34e68ab5562e045b8d0 /include/asm-x86/desc.h | |
| parent | 736f12bff9d9e7b4e895c64f73b190c8383fc2a1 (diff) | |
x86: move x86_64 gdt closer to i386
i386 and x86_64 used two different schemes for maintaining the gdt.
With this patch, x86_64 initial gdt table is defined in a .c file,
same way as i386 is now. Also, we call it "gdt_page", and the descriptor,
"early_gdt_descr". This way we achieve common naming, which can allow for
more code integration.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/desc.h')
| -rw-r--r-- | include/asm-x86/desc.h | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h index b3875d4b4fa..07f9f2b17be 100644 --- a/include/asm-x86/desc.h +++ b/include/asm-x86/desc.h @@ -29,11 +29,17 @@ static inline void fill_ldt(struct desc_struct *desc, extern struct desc_ptr idt_descr; extern gate_desc idt_table[]; +struct gdt_page { + struct desc_struct gdt[GDT_ENTRIES]; +} __attribute__((aligned(PAGE_SIZE))); +DECLARE_PER_CPU(struct gdt_page, gdt_page); + +static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) +{ + return per_cpu(gdt_page, cpu).gdt; +} + #ifdef CONFIG_X86_64 -extern struct desc_struct cpu_gdt_table[GDT_ENTRIES]; -extern struct desc_ptr cpu_gdt_descr[]; -/* the cpu gdt accessor */ -#define get_cpu_gdt_table(x) ((struct desc_struct *)cpu_gdt_descr[x].address) static inline void pack_gate(gate_desc *gate, unsigned type, unsigned long func, unsigned dpl, unsigned ist, unsigned seg) @@ -51,16 +57,6 @@ static inline void pack_gate(gate_desc *gate, unsigned type, unsigned long func, } #else -struct gdt_page { - struct desc_struct gdt[GDT_ENTRIES]; -} __attribute__((aligned(PAGE_SIZE))); -DECLARE_PER_CPU(struct gdt_page, gdt_page); - -static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu) -{ - return per_cpu(gdt_page, cpu).gdt; -} - static inline void pack_gate(gate_desc *gate, unsigned char type, unsigned long base, unsigned dpl, unsigned flags, unsigned short seg) |