[Xen-devel] [PATCH] [BUGFIX] Disallow save / migrate of a domain with real PCI devices

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

If a domain has PCI devices then we can't safely save or migrate it.

At least one user has had system crashes due to this, and the way the 
xendomains script automatically saves and restores domains on reboot.  Since 
there's no sensible semantics for it at the moment, we should disallow it and 
return an appropriate error message to xm.

The first attached patch prevents the suspend from occurring, the second 
ensures that the appropriate errors are fed back to the user.

Signed-off-by: Mark Williamson <mark.williamson@xxxxxxxxxxxx>

-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

Attachment: forbid-susp-pcidom.patch
Description: all/allfiles

Attachment: errmsg-forbid-susp-pcidom.patch
Description: all/allfiles

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