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| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2008-08-15 13:51:22 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-15 13:51:22 +0200 |
| commit | c93baa1ae51cdba25a5f5ad37b2348e700e75daf (patch) | |
| tree | ff373df8f1b0f2faa82bdcc2b27202cb46f7ad6b /arch/x86/kernel | |
| parent | 64e474d168e3cf31e44890b4947644d361f84e43 (diff) | |
x86: apic - unify verify_local_APIC
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/apic_32.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c index 7783c113be2..7ef7c782a42 100644 --- 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. |