* [PATCH] Trivial cleanup in arch/i386/kernel/head.S
@ 2004-12-13 23:41 H. Peter Anvin
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From: H. Peter Anvin @ 2004-12-13 23:41 UTC (permalink / raw)
To: Linux Kernel, Andrew Morton
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Trivial cleanup in arch/i386/kernel/head.S
Signed-Off-By: H. Peter Anvin <hpa@zytor.com>
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Index: linux-2.5/arch/i386/kernel/head.S
===================================================================
RCS file: /home/hpa/kernel/bkcvs/linux-2.5/arch/i386/kernel/head.S,v
retrieving revision 1.36
diff -u -r1.36 head.S
--- linux-2.5/arch/i386/kernel/head.S 23 Aug 2004 19:41:58 -0000 1.36
+++ linux-2.5/arch/i386/kernel/head.S 13 Dec 2004 23:37:05 -0000
@@ -128,9 +128,6 @@
movl %eax,%fs
movl %eax,%gs
- xorl %ebx,%ebx
- incl %ebx /* This is a secondary processor (AP) */
-
/*
* New page tables may be in 4Mbyte page mode and may
* be using the global pages.
@@ -148,7 +145,7 @@
#define cr4_bits mmu_cr4_features-__PAGE_OFFSET
movl cr4_bits,%edx
andl %edx,%edx
- jz 3f
+ jz 6f
movl %cr4,%eax # Turn on paging options (PSE,PAE,..)
orl %edx,%eax
movl %eax,%cr4
@@ -176,9 +173,10 @@
wrmsr
6:
- /* cpuid clobbered ebx, set it up again: */
+ /* This is a secondary processor (AP) */
xorl %ebx,%ebx
incl %ebx
+
3:
#endif /* CONFIG_SMP */
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