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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 19:27:15 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:15 +0200 |
| commit | 7a61d35d4b4056e7711031202da7605e052f4137 (patch) | |
| tree | 4b21e0d541d0a189c2f9f16f53eb6489f07c5a84 /include | |
| parent | 39b7ee06859b07ca5fd4fabb44c4600316532574 (diff) | |
| download | linux-7a61d35d4b4056e7711031202da7605e052f4137.tar.bz2 | |
[PATCH] i386: Page-align the GDT
Xen wants a dedicated page for the GDT. I believe VMI likes it too.
lguest, KVM and native don't care.
Simple transformation to page-aligned "struct gdt_page".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-i386/desc.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h index 4a974064e928..c547403f341d 100644 --- a/include/asm-i386/desc.h +++ b/include/asm-i386/desc.h @@ -18,10 +18,15 @@ struct Xgt_desc_struct { unsigned short pad; } __attribute__ ((packed)); -DECLARE_PER_CPU(struct desc_struct, cpu_gdt[GDT_ENTRIES]); +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(cpu_gdt, cpu); + return per_cpu(gdt_page, cpu).gdt; } extern struct Xgt_desc_struct idt_descr; |