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[PATCH] i386: Rename cpu_gdt_descr and remove extern declaration from smpboot.c 

When I implemented the DECLARE_PER_CPU(var) macros, I was careful that
people couldn't use "var" in a non-percpu context, by prepending
percpu__.  I never considered that this would allow them to overload
the same name for a per-cpu and a non-percpu variable.

It is only one of many horrors in the i386 boot code, but let's rename
the non-perpcu cpu_gdt_descr to early_gdt_descr (not boot_gdt_descr,
that's something else...)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>

===================================================================
This commit is contained in:
Rusty Russell 2007-02-13 13:26:26 +01:00 committed by Andi Kleen
parent 105fddb862
commit 2a57ff1a70
3 changed files with 4 additions and 5 deletions
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6
arch/i386/kernel/head.S
View File

@ -319,7 +319,7 @@ is386: movl $2,%ecx # set MP
call check_x87
call setup_pda
lgdt cpu_gdt_descr
lgdt early_gdt_descr
lidt idt_descr
ljmp $(__KERNEL_CS),$1f
1: movl $(__KERNEL_DS),%eax # reload all the segment registers
@ -375,7 +375,7 @@ ENTRY(setup_pda)
movl start_pda, %eax
/* slot the PDA address into the GDT */
mov cpu_gdt_descr+2, %ecx
mov early_gdt_descr+2, %ecx
mov %ax, (__KERNEL_PDA+0+2)(%ecx) /* base & 0x0000ffff */
shr $16, %eax
mov %al, (__KERNEL_PDA+4+0)(%ecx) /* base & 0x00ff0000 */
@ -597,7 +597,7 @@ idt_descr:
# boot GDT descriptor (later on used by CPU#0):
.word 0 # 32 bit align gdt_desc.address
ENTRY(cpu_gdt_descr)
ENTRY(early_gdt_descr)
.word GDT_ENTRIES*8-1
.long cpu_gdt_table

1
arch/i386/kernel/smpboot.c
View File

@ -623,7 +623,6 @@ extern struct {
unsigned short ss;
} stack_start;
extern struct i386_pda *start_pda;
extern struct Xgt_desc_struct cpu_gdt_descr;
#ifdef CONFIG_NUMA

2
include/asm-i386/desc.h
View File

@ -22,7 +22,7 @@ struct Xgt_desc_struct {
extern struct Xgt_desc_struct idt_descr;
DECLARE_PER_CPU(struct Xgt_desc_struct, cpu_gdt_descr);
extern struct Xgt_desc_struct early_gdt_descr;
static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
{