Messages in this thread Patch in this message | | | Date | Thu, 01 Jan 1970 03:00:06 +0300 | From | Cyrill Gorcunov <> | Subject | [patch 6/8] x86: apic - unify verify_local_APIC |
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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> ---
Index: linux-2.6.git/arch/x86/kernel/apic_32.c =================================================================== --- linux-2.6.git.orig/arch/x86/kernel/apic_32.c 2008-08-14 22:18:00.000000000 +0400 +++ linux-2.6.git/arch/x86/kernel/apic_32.c 2008-08-14 22:21:49.000000000 +0400 @@ -882,6 +882,12 @@ 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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