[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] x86-64 problem with invalid page fault in linux 2.6.16-rc1
>In SMP systems we need the guest to handle spurious page-not-present >faults at any time and at any virtual address. This is a side effect of >the writable pagetable implementation. So far it was my understanding that writable page tables are not the normal way of operating for the guest (I thought this was only happening in shadow mode). If that assumption is wrong, why get all the page table pages converted to readonly in the kernel? >If the vmalloc_fault path no longer covers all of the kernel virtual >address space then a spurious-fault detection needs to be added before >oops'ing the kernel. That would then include the kernel image itself, too. But we never see any page faults there. Further, what updating are you talking about - the area for a loaded module gets mapped once and then never touched again (and as said in the original mail, the faults are occuring long after the affected module got loaded)? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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