Kevin P. Fleming wrote:
'lspci -vb' does not understand IO-APIC mode, as best I can tell, so
the interrupt number that it reports is totally useless.
On my desktop machine, with an nVidia graphics card in a PCI-Express
slot, /proc/interrupts shows it using interrupt 185, and 'lspci -vb'
shows it using IRQ 10. It is most definitely _not_ on IRQ 10, since
/proc/interrupts show the actual mapping from the IRQ controller (the
APIC) to the driver servicing the device.
At best, 'lspci -vb' is showing what interrupt the device was on
_before_ the kernel reassigned it using APIC mode.
Mr. Fleming:
I am aware of all of the above but does the fact you are posting this
mean that Digium is now aware of this?
I have had a Digium tech ssh to a machine, run an lspci -vb, report
"your interrupts are shared" and refuse to work on the case until the
lspci -vb showed unique IRQs.
Does your post mean that this policy has now changed at Digium?
As Piotr A. Sygula wrote in another related post:
I.e. although APIC is splitting up IRQ's rather nicely, the tech support guy
is saying that it doesn't matter what the APIC layer says. Would someone
out there "break the tie"? I'd like an educated opinion/statement on
whether APIC support solves the IRQ sharing issue, or simply masks it.
Which suggests other customers have been told by Digium that lspci -vb
is the final word on whether IRQs are being shared and whether or not
your hardware configuration is supported by Digium.
So what's the real story -- does APIC count or not? Will Digium support
systems with unique APIC interrupts but not unique lspci -vb interrupts?
--
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Open Source VoIP/Telephony Specialists 1 877 NET VOIP (638 8647 x102)
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