Commit 4ef0652a authored Mar 23, 2006 by Jan Beulich Committed by Linus Torvalds Mar 23, 2006

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



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>

parent 52f4a91a

arch/i386/kernel/head.S

+1 −4

Original line number	Diff line number	Diff line
		@@ -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 */