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[PATCH] i386: cleanup after cpu_gdt_descr conversion to per-cpu data

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With cpu_gdt_descr having been converted to per-CPU data, the old object
(in head.S) no longer needs to reserve space for each CPU's instance.  With
cpu_gdt_table not being used for CPU 0 anymore, it doesn't seem to need
page alignment (or if in fact there is a need for it to retain that
alignment, the whole object should go into .data.page_align).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich 2006-03-23 02:59:51 -08:00 • committed by Linus Torvalds
parent 52f4a91afd
commit 4ef0652a74
1 changed files with 1 additions and 4 deletions

5
arch/i386/kernel/head.S
View file

@ -450,7 +450,6 @@ int_msg:
.globl boot_gdt_descr .globl boot_gdt_descr
.globl idt_descr .globl idt_descr
.globl cpu_gdt_descr
ALIGN ALIGN
# early boot GDT descriptor (must use 1:1 address mapping) # early boot GDT descriptor (must use 1:1 address mapping)
@ -470,8 +469,6 @@ cpu_gdt_descr:
.word GDT_ENTRIES*8-1 .word GDT_ENTRIES*8-1
.long cpu_gdt_table .long cpu_gdt_table
.fill NR_CPUS-1,8,0 # space for the other GDT descriptors
/* /*
* The boot_gdt_table must mirror the equivalent in setup.S and is * The boot_gdt_table must mirror the equivalent in setup.S and is
* used only for booting. * used only for booting.
@ -485,7 +482,7 @@ ENTRY(boot_gdt_table)
/* /*
* The Global Descriptor Table contains 28 quadwords, per-CPU. * The Global Descriptor Table contains 28 quadwords, per-CPU.
*/ */
.align PAGE_SIZE_asm .align L1_CACHE_BYTES
ENTRY(cpu_gdt_table) ENTRY(cpu_gdt_table)
.quad 0x0000000000000000 /* NULL descriptor */ .quad 0x0000000000000000 /* NULL descriptor */
.quad 0x0000000000000000 /* 0x0b reserved */ .quad 0x0000000000000000 /* 0x0b reserved */