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Re: [Xen-devel] Debugging PAE Xen with >4GB

On 17 Jun 2006, at 00:43, Nakajima, Jun wrote:

Now it works fines with the patch below. I don't think this is the final
patch, but it's a hint for debugging (for Keir, especially ;-). If I
back out the patch, what I see is that the second level page table for
mapping Xen is not valid, i.e. zero clean (L3 looks okay). So debug Xen
works fine (i.e. the one built by "make debug=y").

That's weird. Is the L2 page itself owned by the right domain and type l2_page_table? What is CR3 at that point (does it point at one of the lowmem caches, or directly at a guest page)? Etc... If you've got a reliable reproduction of this problem then I expect we can gather enough tracing to work out what's going on.

 -- Keir

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