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x86: apic - unify verify_local_APIC
author
Cyrill Gorcunov
<gorcunov@gmail.com>
Fri, 15 Aug 2008 11:51:22 +0000
(13:51 +0200)
committer
Ingo Molnar
<mingo@elte.hu>
Fri, 15 Aug 2008 11:51:22 +0000
(13:51 +0200)
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/apic_32.c
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diff --git
a/arch/x86/kernel/apic_32.c
b/arch/x86/kernel/apic_32.c
index 7783c113be249c82822b5570c57da639d89000e0..7ef7c782a42de5cbe5ff04377482ffd2bd52e5de 100644
(file)
--- a/
arch/x86/kernel/apic_32.c
+++ b/
arch/x86/kernel/apic_32.c
@@
-878,6
+878,12
@@
int __init verify_local_APIC(void)
*/
reg0 = apic_read(APIC_ID);
apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
+ apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
+ reg1 = apic_read(APIC_ID);
+ apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
+ apic_write(APIC_ID, reg0);
+ if (reg1 != (reg0 ^ APIC_ID_MASK))
+ return 0;
/*
* The next two are just to see if we have sane values.
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