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Re: [GSoC] Remote kernel debugging over Ethernet

On Thu, Mar 26, 2009 at 08:23:13AM -0400, Thor Lancelot Simon wrote:
> > A lot can be done with Xen and PCI pass-though (it can even expose
> > otherwise-hidden bugs because it's more picky about bus_dma(9) use).
> > Unfortunably this doesn't work well for pcmcia or cardbus devices.
> But our Xen DomU kernels still can't be attached to GDB, right?

I know ddb is working; I'm not sure what's missing for gdb.

> I spent a couple of hours last week trying to pass through PCI
> devices to a HVM domain, so I could do exactly what you seem to be
> suggesting.  I could not get it to work -- it looked
> like qemu-dm would have to be built with some PCI library that only
> understoond Linux.  :-/

It's working for PV domains. I didn't look at what's missing for
qemu domains (I though it was not supported at all by Xen, but
maybe this changed with Xen 3.3)

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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