Messages in this thread | | | Date | Thu, 6 Dec 2007 17:02:14 +0100 (CET) | From | Bernhard Kaindl <> | Subject | Re: remote debugging via FireWire * __fast__ firedump! |
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On Tue, 4 Dec 2007, Andi Kleen wrote: > >> I have just had the guts to explore __fast__ memory dumping over >> firewire for full-system dumps [...] > > Unfortunately it won't work for >3GB or so AFAIK.
Yes we seem to be limited to 4GB mostly, with 3G mem hole, it's 3GB.
>> Afterwards, the victim was dead (I excluded the low MB of memory, >> so something else must have caused this), at least the start of > > Did you run into the PCI memory hole below 4GB?
Thanks, that was it most likely. I checked and haw that I did read a 32MB reserved area just below 2GB.
> I suppose the best way would be to require a System.map and > then read e820.nr_map/e820.map[] and only dump real memory.
Yes, good idea! Bernhard
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