[Xen-devel] Shadow pagetable code changes since 3.0.2

[Yongjun Jeon <yongjunj@xxxxxxxxxxxxxx>]

Hi all,

I don't know if anyone's tried this already or even knows about this, but 
I'm trying to apply the Potemkin patch to the new Xen 3.1.0 source code. 
The original Potemkin patch by Michael Vrable et al. 
(www.cs.ucsd.edu/~savage/papers/Sosp05.pdf) implements delta 
virtualization (copy-on-write fork for guest domain memory) as an 
extension to Xen's translated shadow mode. Download is available here: 
(http://turin.ucsd.edu/potemkin/xen-potemkin-patches-20060404).
I noticed that the shadow pagetable code has went through some serious 
design change since 3.0.2, and I couldn't find a good documentation that 
explains how the old code maps to the new code.
Can anyone please explain the exact nature of the change - how the new 
functions replace the old ones?
Thanks,
Jun

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