Commit:     f44d9efd3510776216938fef84adc99cc0e12412
Parent:     52bfb36050c8529d9031d2c2513b281a360922ec
Author:     Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Mon Nov 26 20:42:20 2007 +0100
Committer:  Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Mon Nov 26 20:42:20 2007 +0100

    x86: fix APIC related bootup crash on Athlon XP CPUs
    [EMAIL PROTECTED] reported that an APIC-enabled
    Asus a7v8x-x with an Athlon XP reboots early in the bootup:
    after a long marathon of spontaneous-reboot debugging, it turns
    out to be caused by sync_Arb_ids(). AMD CPUs never really needed
    this sequence anyway, so just return early if we meet an AMD CPU.
    Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
    Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
 arch/x86/kernel/apic_32.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 08b07c1..96986b4 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -789,7 +789,7 @@ void __init sync_Arb_IDs(void)
         * Unsupported on P4 - see Intel Dev. Manual Vol. 3, Ch. 8.6.1 And not
         * needed on AMD.
-       if (modern_apic())
+       if (modern_apic() || boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
         * Wait for idle.
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