Xen devel - Aug 2005 - DOM0_GETPAGEFRAMEINFO for non-dom0 domains

hi,

with writable page tables it takes a little more work tracking page
types from within a domU. Basically, I need to duplicate Xen''s pgd
walks
when pinning and unpinning pgds, within the domU, in order to obtain a
consistent map of page types for my own pages.

It seems it would be a lot easier just to allow domUs access to a
DOM0_GETPAGEFRAMEINFO-like hypercall that would extract this info from
Xen. Would you consider merging a patch to do this, and how/where would
you prefer it to be implemented?

thanks,
Jacob

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On 16 Aug 2005, at 16:23, Jacob Gorm Hansen wrote:
> with writable page tables it takes a little more work tracking page
> types from within a domU. Basically, I need to duplicate Xen''s pgd
> walks
> when pinning and unpinning pgds, within the domU, in order to obtain a
> consistent map of page types for my own pages.
>
> It seems it would be a lot easier just to allow domUs access to a
> DOM0_GETPAGEFRAMEINFO-like hypercall that would extract this info from
> Xen. Would you consider merging a patch to do this, and how/where would
> you prefer it to be implemented?
Implement it as a new MMUEXT operation and we''ll consider it.

  -- Keir


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