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Summary: ACPI: IRQ routing regression cauees dma_timer_expiry hang on 2.6.9-42


https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=203423





------- Additional Comments From [EMAIL PROTECTED]  2006-08-31 08:51 EST -------
We did set:

CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y

in U4 for the up kernel where they had been previously not set in U3. The
details of this are in bug 168584. It sounds like these changes are what are
causing the new behavior. So, this change should only affect the UP kernel, and
if apics are incorrectly reported by the bios (which seems to be most cases), or
setup incorrectly for some other reason, the workaround is to pass 'noapic' at
the command line, until we figure out why things have gone awry (bios or kernel
problem). 

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