[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen dom0 crash: "d0:v0: unhandled page fault (ec=0000)"
On Tue, 2010-10-19 at 19:01 +0100, sven wrote: > On 10/19/2010 05:45 PM, Gianni Tedesco wrote: > > ditto, I suspected a known bug in my gcc version which broke xchg > > because when I compiled with -O2 instead of -Os... the problem went away > > but then something else bad happened later (I forget the details, and it > > was too many config tweaks ago to get back to last time I had it working > > that well) > > Like disabling "Optimize for size" in the config? > Just tried, didn't make any difference. Well, I mean I still have"Optimize for size" disabled and it's still broken. > > > it's clearly one of those fun and subtle bugs :( > > *sigh* :( I am doing a little more digging, what I have found is that xen_build_dynamic_phys_to_machine() is building a valid looking p2m table, but later on we get some calls to get_phys_to_machine() which are outside the range of max_pfn (which Jeremy tells me is acceptable) but at that point max_pfn is zero. In other words, it looks like some important data structures are getting over-written with nonsense. I will have a think and get back to debugging this when I have a bit more time. In the mean time, can you provide me with some info about the machines you're reproing this on? Mines a brand new dell power-edge xeon thing. > Regards, > Sven > > p.s.: someone let me know if i should keep everybody on cc! Please, that's the convention! _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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