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Dealing with faulty RAM modules in 2026 (blog.kumio.org)
submitted 10 months ago by to c/linux@programming.dev
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How to test and safely keep using your janky RAM without compromising stability using memtest86+ and the memmap kernel param.

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[–] 1 point 10 months ago (2 children)

Well done. I recently revived the BadRAM kernel patch in order to do something similar; memtest86+ supports that functionality too, using , , , .

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  • [–] [S] 4 points 10 months ago* (last edited 10 months ago) (1 child)

    I'm curious: What's motivating you to do that when the memmap param can do the same without patching?

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  • [–] 1 point 9 months ago

    BadRAM specifiers can apply to stripes of memory corresponding to certain physical hardware failures. The memmap hack only allows for contiguous allocations. BadRAM's intended for repurposing consumer-grade RAM that might normally be thrown out, not for reconfiguring motherboards that have strange layouts.

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