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Re: [Xen-devel] pagetable maps itself

On 13 Mar 2005, at 15:21, David Becker wrote:

I'm trying to put the shared_info page entry(0x001b6007) in
a pte at 0xc0116404 and get
(XEN) DOM77: (file=memory.c, line=1821) PTWR failure! Pagetable maps itself at c0116404

Doubtless this is operator error, but I'm at a loss as to what my error is. I am confident the pte address is correct and that the domain build says the
share_info mfn is 0x1b6.

The pgd page entry for 0xc0116404 is 0x01c28067, which also appears OK.

I don't understand how my table is mapping itself when I write that pte.

I've now checked a fix for this into the unstable repository. It would be good to know that the problem goes away for you. If you are working with the 2.0 repositories then you will need to use the batched (mmu_update) interface.

 -- Keir

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