[issue558] ACPI and IRQ problems

Matthew Dillon dillon at apollo.backplane.com
Sat Apr 14 15:59:15 PDT 2007

:Chris Turner wrote:
:> - I am getting the same "sched_ithd: stray interrupt 7" errors,
:funny, that I should 'spam' the bug list about this problem
:when I didn't know about the CPU_AMD64X2_INTR_SPAM option..
:which if anyone is getting lots of these errors, is worth checking out..
:my apologies... gotta read that LINT!

    That option only works with multi-core AMD cpus, and only if the BIOS
    has not properly programmed the hypertransport bus's interrupt routing.

    There are issues with various motherboard chipsets and cpus that cause
    spurious interrupts, either due to bugs in the hardware, bad hardware
    design, bugs in the BIOS, or lack of documentation.  Unfortunately
    there is very little we can do about most of these issues.

					Matthew Dillon 
					<dillon at backplane.com>

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