[Xen-users] PCI passthrough x 3.1 x 3.2.1 x 3.2.2 x 3.3.0

[Christian Lyra <lyra@xxxxxxxxxxxxx>]

hi there,

        After a long night playing with various xen versions and kernels I 
would like to share what I have found and ask for help. My current 
setup is a xen 3.1. I hide 2 nics and 1 sata controller, and "give" 
then to a domU firewall and a domU fileserver. Everything seems to work 
right, except for a segfault on smpd while starting on boot. 
        Now, iÂd like to expand my setup and include a mythtv backend with a 
dvb-s card. Since i saw people having bad experiences with 3.3.0 I did 
not even bother to try (I should... really).
        So I got 3.2.2, did a make world && make install, and dom0 booted 
right. My "main" bridge didnt came up but a ifconfig <bridge> up solved 
the problem.  Earlier domUs seems to work (with the old 3.1 kernel!), 
and i went to setup the new mythtv domU. First I tried to use the same 
kernel of the domU, should work (right?), but didnt. So I went to 
recompile the kernel, removing the PRIVILEGED_GUEST and XEN_BACKEND 
options. The XEN config part is here[1].
        With the new kernel the domU booted but i got a ugly oops when the domU 
tried to modprobe bttv modules.
        So, i wen to try 3.2.1, with the very same result. I ended up with my 
old trusty 3.1...

        Perhaps the problem is the kernel config, as there was some changes 
from 3.1 to 3.2. Any hints?


[1] http://lyra.soueu.com.br/pub/xen/config-3.2

-- 
Christian Lyra
POP-PR - RNP

http://lyra.soueu.com.br

I will not agree to let the heroes go free if they win a rigged contest, 
even though my advisors assure me it is impossible for them to win.
                        The Top Things I'd Do
                        If I Ever Became an Evil Overlord

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