Re: [MICROPATCH] Make x86_64 build work without GART_IOMMU

[Roland Dreier]

    Jonathan> Andrew had asked:

    Andrew> Can you get a sysrq-p trace?

    Jonathan> There's this little problem in that, to make things go
    Jonathan> wrong, I have to fire up X.  That pretty well hoses the
    Jonathan> display, and an attempt to chvt back to a regular
    Jonathan> console just hangs.  I guess I may have to dig in and
    Jonathan> try to track this one down the hard way; wish I knew
    Jonathan> more about AGP hardware...

Can you get into the machine over the net and use /proc/sysrq-trigger?
(You might need a serial console too depending on how busted things
are)

 - Roland
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