On 04/21/09 15:33, Avi Kivity wrote:
Gerd Hoffmann wrote:
Not sure, have to dig into the xen code to figure.
Could be xen doesn't remember the page in the first place. They might
let the illegal instruction fault handler patch the opcode. At least I
vaguely remember some discussions about that.
Xen does a simple msr-triggered memcpy() as well, without keeping track
of the page. On a quick glimpse I can't find a opcode patching place
either. Hmm.
Could be there isn't a interface to forgot the page. "reboot" in xen
land is "destroy guest, restart it".
How do you unload a driver then?
The linux module (xen-platform-pci) has no module_exit() ...
cheers,
Gerd
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