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

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

[Jan Beulich]

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>

--- /home/jbeulich/tmp/linux-2.6.16-rc5/arch/i386/kernel/head.S	2006-02-28 08:38:38.000000000 +0100
+++ 2.6.16-rc5-i386-cpu_gdt_descr-cleanup/arch/i386/kernel/head.S	2006-01-25 11:15:51.000000000 +0100
@@ -450,7 +450,6 @@ int_msg:
 
 .globl boot_gdt_descr
 .globl idt_descr
-.globl cpu_gdt_descr
 
 	ALIGN
 # early boot GDT descriptor (must use 1:1 address mapping)
@@ -470,8 +469,6 @@ cpu_gdt_descr:
 	.word GDT_ENTRIES*8-1
 	.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
  * used only for booting.
@@ -485,7 +482,7 @@ ENTRY(boot_gdt_table)
 /*
  * The Global Descriptor Table contains 28 quadwords, per-CPU.
  */
-	.align PAGE_SIZE_asm
+	.align L1_CACHE_BYTES
 ENTRY(cpu_gdt_table)
 	.quad 0x0000000000000000	/* NULL descriptor */
 	.quad 0x0000000000000000	/* 0x0b reserved */