[Xen-users] A tale about pci and xen

[Christian Lyra <lyra@xxxxxxxxxxxxx>]

Hi there,

        Just want to share a issue that i had with a DVB pci card on domU. IÂm 
using xen 3.1 (so far the one that works best with my various pci 
passthrough devices), and I wanted to export a DVB pci card to a mythtv 
backend domU. The domU could see the device, and load the modules 
correctly, but when it tried to use the device the domU froze, and cpu 
went 100%. After trying a lot of extra parameters, and almost giving 
up, i though about something less obvious. The host machine has a dual 
core processor, and the domU was configured to use only one cpu. So i 
modified the config to allow domu use both 2 cpus, and the problem is 
solved!
        I guess that this problem has something to do with cpu/smp affinity. Is 
this expected or did i found a bug?


-- 
Christian Lyra
POP-PR - RNP

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