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Re: [Xen-devel] Was:Bug in PCI Passthrough. Is: XT-PIC controller not working with pvops kernel.



Am 22.04.2011 14:04, schrieb Konrad Rzeszutek Wilk:
On Wed, Apr 20, 2011 at 10:01:10PM +0200, Josef Vogt wrote:
Am 20.04.2011 21:38, schrieb Konrad Rzeszutek Wilk:
On Wed, Apr 20, 2011 at 09:16:31PM +0200, Josef Vogt wrote:
Am 20.04.2011 14:51, schrieb Konrad Rzeszutek Wilk:
On Wed, Apr 20, 2011 at 11:15:23AM +0200, Josef Vogt wrote:
Hello all

I tried to enable PCI Passthrough in my Debian Squeeze installation.
Unfortunately, it didnt work. The following bug showed up (excerpt
>from dmesg):
[ 10.148612] uhci_hcd 0000:00:14.2: PCI INT D ->    Link[LNKD] ->    GSI 11
(level, low) ->    IRQ 11
[ 4.678352] Failed to setup GSI :11, err_code:-22
[ 4.678480] dmfe 0000:00:0e.0: PCI INT A ->    Link[LNKB] ->    GSI 11 (level,
low) ->    IRQ 11
[ 6.868419] Failed to setup GSI :10, err_code:-22
That is most strange. Your interrupts are below IRQ 16, and they are level?
They should have been edge, unless you have some strange machine.

Hm... it's a rather old one: Compaq Deskpro PD1006 (Pentium III)
Can you boot the same kernel but without Xen and send the bootup output?
And also the /proc/interrupts (the full one).
This is from Standard debian kernel (2.6.32-5-686):
Whoa. Old style PIC controller.
             CPU0

    0:      33706    XT-PIC-XT        timer
    1:        154    XT-PIC-XT        i8042
    2:          0    XT-PIC-XT        cascade
    5:          0    XT-PIC-XT        ES18xx
    6:          3    XT-PIC-XT        floppy
    7:          1    XT-PIC-XT        parport0
    8:          0    XT-PIC-XT        rtc0
    9:          0    XT-PIC-XT        acpi
   10:        250    XT-PIC-XT        eth1
   11:        796    XT-PIC-XT        uhci_hcd:usb1, eth0
   12:          4    XT-PIC-XT        i8042
   14:      16290    XT-PIC-XT        ata_piix
   15:        206    XT-PIC-XT        ata_piix
So to fix your problem we would need to do some extra surgery in the
bringup code. We really did not think that anybody would still be
trying to run on this old hardware.
Well... the machine runs fine... :)
But never mind, if you think, it's not worth it, then we'll leave it. Just tell me what you think, so also the debian bug can be closed as wontfix or whatever. If you want to investigate this further, I would of course do what I can to support you (with my limited knowledge of xen).
Thanks anyway!


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