Re: HPET : timer routing setup with Legacy Routing Replacement bit set

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



"Om Narasimhan" <[email protected]> writes:

> Hi,
> I am working with a new bios for a server our company build. I am
> confused about the routing of the timer and arch/x86_64/kernel/time.c
> irq setup.
> 
> HPET specification states that if Legacy routing replacement enable
> bit is set, IRQ0 should not be connected to PIN0 of IOAPIC, and IRQ0
> should not generate any interrupts. But in the kernel code, timer is
> hard coded to irq0 (arch/x86_64/kernel/time.c : time_init(), calls
> setup_irq(0,&irq0). 0 being the irq number)
> 
> My question is, should it not be IRQ2 if HPET is enabled and Legacy
> Routing Replacement bit is enbaled?

Legacy Routing Replacement is currently not supported.

Feel free to contribute a patch supporting it though.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux