I recently had part of a 32 gig DIMM go bad on a 128 gig system. One of the larger VMs was spontaneously rebooting for no apparent reason. I was able to find the addresses with MemTest86 and map out 512 megs of the affected DIMM with the Linux kernel memmap option.

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harhargange 2 hours ago | parent [-]

So you can still use the hardware via software fix?

	▲	icedchai an hour ago \| parent [-]
		Correct! Basically, I excluded the bad range so Linux doesn't touch it. It's been stable for weeks now. I should send the DIMM back under warranty.