Hi,
I recently came across an Intel statement saying that the "INIT Level
deassert" IPI used by sync_arb_IDs() (arch/i386/kernel/apic.c) should
not be used on P4 and Xeon which don't have APIC bus arbitration anyway.
See Intel IA32 architecture software developers manual vol. 3, 8.6.1
(p.8-23), 8.7 (p. 8.31).
The patch below skips the unsupported IPI on P4/Xeon.
The same thing should probably be done for x86_64.
Regards,
Martin
--
Martin Wilck Phone: +49 5251 8 15113
Fujitsu Siemens Computers Fax: +49 5251 8 20409
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