Re: [Xen-users] hanging dell hardware

[Jerone Young <jyoung5@xxxxxxxxxx>]

See bugzilla #76

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=76

On Wed, 2005-08-24 at 15:06 +0200, Daniel Schröder wrote:
> Hi *,
> 
> there are numerous mails about this xen "problem".
> A short abstract:
> 
> On Dell PowerEdge 28XX the system freezes or locks on IO if USB is
> enabled in Bios.
> The reason behind this, is a shared irq problem, because USB and NIC
> shares in Bios same IRQ e.g. both 15 or 7.
> Bios shares some other irqs too but these seems to be not a problem...
> This problem occures only with XEN Kernel dom0, a "normal" distri kernel
> works fine...
> If USB is in bios disabled...all is fine...
> 
> this is a /proc/interrupts with USB enabled
> 
>           CPU0
>   1:        141        Phys-irq  i8042
>  12:         93        Phys-irq  i8042
>  16:        161        Phys-irq  uhci_hcd
>  18:       3917        Phys-irq  uhci_hcd
>  19:          0        Phys-irq  uhci_hcd
>  23:         27        Phys-irq  ehci_hcd
>  38:       2940        Phys-irq  megaraid
>  58:         80        Phys-irq  aic7xxx
>  59:         30        Phys-irq  aic7xxx
>  72:         31        Phys-irq  eth0
> 128:          1     Dynamic-irq  misdirect
> 129:          0     Dynamic-irq  ctrl-if
> 130:       9832     Dynamic-irq  timer
> 131:          0     Dynamic-irq  console
> 132:          0     Dynamic-irq  net-be-dbg
> NMI:          0
> ERR:          0
> 
> and this with usb disabled
> 
>           CPU0
>   1:          8        Phys-irq  i8042
>  12:         93        Phys-irq  i8042
>  14:        264        Phys-irq  ide0
>  16:     357354        Phys-irq  uhci_hcd
>  38:      25038        Phys-irq  megaraid
>  58:         80        Phys-irq  aic7xxx
>  59:         30        Phys-irq  aic7xxx
>  72:     212147        Phys-irq  eth0
> 128:          1     Dynamic-irq  misdirect
> 129:          0     Dynamic-irq  ctrl-if
> 130:      54174     Dynamic-irq  timer
> 131:          0     Dynamic-irq  console
> 132:          0     Dynamic-irq  net-be-dbg
> NMI:          0
> ERR:          0
> 
> This problem is very annoying to me...because i am using an usb
> usv...and at the moment i must disable USB in bios to have a stable machine!
> Plz. could some developer contact me to investigate and fix this
> problem? Or is this problem known and fixed in a newer version?
> Currently i am using Xen 2.06 with xen Kernel 2.6.11.10 32bit
> 
> cheers,
> daniel
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 
-- 
Jerone Young
IBM Linux Technology Center
jyoung5@xxxxxxxxxx
512-838-1157 (T/L: 678-1157)


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