Hi,
I have a question about this article.
http://osdever.net/tutorials/apicarticle.php?the_id=54
The author wrote : "Conventionally, from highest to lowest priority,
the IRQ's go 0,1,2,8,9,10,11,12,13,14,15,3,4,5,6,7. You can assign the
vectors to the IRQ's in that order or any order you wish. Whichever IRQ
you give the highest vector number to will be the highest priority,
etc. I just stuck with the conventional assignment as I can't think of
any reason not to."
Does the author right ? With to old PIC, priorities go 0 to 15 why
that change with APIC for uniprocessor ?
Last question, how can I get the interrupt vector in order to know the
priority assignment that Linux choose?
I have a question about this article.
http://osdever.net/tutorials/apicarticle.php?the_id=54
The author wrote : "Conventionally, from highest to lowest priority,
the IRQ's go 0,1,2,8,9,10,11,12,13,14,15,3,4,5,6,7. You can assign the
vectors to the IRQ's in that order or any order you wish. Whichever IRQ
you give the highest vector number to will be the highest priority,
etc. I just stuck with the conventional assignment as I can't think of
any reason not to."
Does the author right ? With to old PIC, priorities go 0 to 15 why
that change with APIC for uniprocessor ?
Last question, how can I get the interrupt vector in order to know the
priority assignment that Linux choose?
Best regards,
Eric
On 3/13/06, Eric Clément <clement.eric@xxxxxxxxx> wrote:
I reply to myself. I found an interesting web site that describe an implementation of the IO-APIC vector in a uniprocessor.Eric
Hi,I know that unlike with the PIC, the priority is not related to pin number (IRQ) but with the Redirection Table. How can I see its content (interrupt vector and priority) ? I use Debian and kernel 2.6.15.Best regardsEric
