|From:||"Thomas E. Spanjaard" <tgen@xxxxxxxxxxxxx>|
|Date:||Thu, 15 Feb 2007 18:03:34 +0000|
Matthew Dillon wrote:
> You can't at the moment, but only for two simple reasons: First,
> the checkpointing code doesn't save and restore state for
> MAP_VPAGETABLE, and second, the vkernel needs a signal handler for
> the checkpoint restore to re-create the VM spaces for all of its
> virtualized user processes.
> Neither of these is difficult to do. Saving the state for a > file-backed MAP_VPAGETABLE only requires saving the page table
> directory offset and mapping type. And writing a signal handler
> to re-create the VM spaces for all the virtualized user processes
> is just as easy, because the VM spaces are all mapped as VPAGETABLE's
> on the same physical memory backing file and the vkernel already knows > the page directory offset for each one.
Cool, I didn't think that it would be relatively easy to
Cheers, -- Thomas E. Spanjaard firstname.lastname@example.org
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