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authorRusty Russell <rusty@rustcorp.com.au>2007-05-02 19:27:10 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:10 +0200
commitbf50467204b435421d8de33ad080fa46c6f3d50b (patch)
tree87a27c6f23f28d0e7dacee4ac45986e897d244a8 /include/asm-i386/desc.h
parentae1ee11be77f51cedb6c569887dddc70c163ab6d (diff)
[PATCH] i386: Use per-cpu GDT immediately upon boot
Now we are no longer dynamically allocating the GDT, we don't need the "cpu_gdt_table" at all: we can switch straight from "boot_gdt_table" to the per-cpu GDT. This means initializing the cpu_gdt array in C. The boot CPU uses the per-cpu var directly, then in smp_prepare_cpus() it switches to the per-cpu copy just allocated. For secondary CPUs, the early_gdt_descr is set to point directly to their per-cpu copy. For UP the code is very simple: it keeps using the "per-cpu" GDT as per SMP, but we never have to move. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/asm-i386/desc.h')
-rw-r--r--include/asm-i386/desc.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h
index 53c5916687b..a75ae6b9786 100644
--- a/include/asm-i386/desc.h
+++ b/include/asm-i386/desc.h
@@ -12,8 +12,6 @@
#include <asm/mmu.h>
-extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-
struct Xgt_desc_struct {
unsigned short size;
unsigned long address __attribute__((packed));