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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] 3.1/2 live migration panic
At 08:10 +0000 on 17 Jan (1200557415), Keir Fraser wrote: > What do you mean by 'a constant'? It's a pointer into the guest linear > pagetable, which I suppose is what we expect, and for some reason there is > no PTE at that location to be read. Clearly a higher-level page directory is > missing. Possibly shadow code has got confused and thought a page directory > was present when it wasn't, or perhaps the page directory went away (and/or > was in the process of disappearing from TLBs) as the shadow fault handler > went about its business. I'm sure Tim will have some insights. :-) Hmm. Yes, it's a pointer into the (shadow) linear PT, and we've just checked that it's valid or made it so. Code inspection has lead to a lot of dead ends so far; can you try the attached patch? Cheers, Tim. -- Tim Deegan <Tim.Deegan@xxxxxxxxxx> Principal Software Engineer, Citrix Systems (R&D) Ltd. [Company #02300071, SL9 0DZ, UK.] Attachment:
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