how to get PFN of page cache in guest OS?
i want to develop the linux kernel module that detct PFN of page cache and its corresponding disk block number. so how to get PFN of page cache?. i use this module in VM live migration and use KVM hypervisor. i am trying to reduce total migration time. instead of migrating page cache at remote host, pagecache restore from the disk storage before VM resume at remote host.
On Fri, 21 Mar 2014 16:40:10 +0530, pravin jadav said:
instead of migrating page cache at remote host, pagecache restore from the disk storage before VM resume at remote host.
This will be.. .problematic. The problem is that to do this well, you really need 2 or more hypervisor hosts that both have access to the same storage. Which means you'll have (basically) find a way to make 2 or more systems share the same swap space.
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Valdis.Kletnieks＠vt.edu