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Re: [Xen-devel] An issue in sharing the pages again in xen-memshare



On 07/23/2018 05:37 AM, sepanta s wrote:
> I have written a program that can share memory pages of two VMs every x
> milliseconds. To do so, I modified xen and added an unshare event to be
> able to capture it. However,  for some pages, when I receive the unshare
> event that contains the information about the pages which was about to
> be written on and put it on a buffer for sharing them again after x
> milliseconds, I cannot nominate them again and an error occurs. So, the
> sharing mechanism I have built can partially share pages. I guess the
> problem might be because of internal structure of sharing mechanism in
> the Xen but can't figure out the problem.
> Do you  have any idea what can cause this problem? Or what should I
> check to get closer to any solution?

I've never used this feature, but Tamas might have some insight into
this (added to Cc).

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