From 7a61d35d4b4056e7711031202da7605e052f4137 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 2 May 2007 19:27:15 +0200 Subject: [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 Signed-off-by: Andi Kleen Acked-by: Jeremy Fitzhardinge --- include/asm-i386/desc.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/asm-i386') diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h index 4a974064e92..c547403f341 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; -- cgit v1.2.3