Re: [Xen-devel] HVM domain with VT-d passthrough fails to boot (was: [PATCH 2/2] ioemu: Enable guest OS to program D0-D3hot states of an assigned device)

[Simon Horman <horms@xxxxxxxxxxxx>]

On Thu, Feb 05, 2009 at 07:23:11PM +0900, Yuji Shimada wrote:
> This patch enables guest OS to program D0-D3hot states of assigned
> device.
> 
> The patch depends on the following patch I have sent.
> 
>     [PATCH 1/2] libxc: Add xc_domain_unbind_msi_irq
> 
> 
> This patch is revised version based on the review comments.
> 
> - Use LIST_FOREACH(). Don't use lh_first, le_next directly.
> - Use pci_{read, write}_block instead of "switch(len) case [124]
>   pci_{read, write}_{byte, word, long}():".
> 
> We can clean up the existing code in pass-through.c in the same
> manner. I will submit the patch to clean up the code.

Hi Shimada-san,

This change appears to prevent pci passthrough from working
correctly on an HVM doman on an HP dc7800 in x86_64 mode.
Actually the HVM domain in question fails to boot.

I my test environment is:

hypervisor: xen-unstable.hg cset 19174
            (anything after that up until 19210 (tip) doesn't boot on
             my machine, I am investigting that issue, which may be related)
tools:      xen-unstable.hg cset 19210 (tip)
ioemu-remote: qemu-xen-unstable.git
              8c771eb6294afc5b3754a9e3de51568d4e5986c2 (this patch)

I'm happy to look into this, but I am wondering if anyone else
has seen this problem.

-- 
Simon Horman
  VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
  H: www.vergenet.net/~horms/             W: www.valinux.co.jp/en


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