CXL-DISABLE-REGION(1)

✨ CXL-DISABLE-REGION 💅

okay bestie, so this one is a page from the cxl manual, and it's literally about turning regions OFF. yes, the whole thing. let's get into it 🫶

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🌸 NAME 🌸

cxl-disable-region — disable the region(s) you point at. that's it, that's the vibe.

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🦋 SYNOPSIS 🦋

cxl disable-region <region> [<options>]

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💖 DESCRIPTION 💖

okay so a CXL region is made up of one or more slices of CXL memdevs, and it's got configurable interleave settings — both the number of interleave ways and the interleave granularity. fancy, i know 💅

if there are still memory blocks that are online, the operation will try to offline the relevant blocks. and if that offlining fails? then the operation fails — unless you're using the -f (force) parameter. no cap 🫶

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⭐ EXAMPLE ⭐

# cxl disable-region all
disabled 2 regions

ngl, this part is lowkey iconic: for any enable or disable command, if the operation is a no-op because of the current state of a target (like, it's already enabled or already disabled), it's still considered successful when executed, even if no actual operation happened. the target can be a bus, decoder, memdev, or region. the operation still succeeds and reports the number of bus/decoder/memdev/region operated on — even when it's a total no-op. periodt ✨

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🎀 OPTIONS 🎀

• -b, --bus= — restrict the operation to the bus you specify. keep it contained bestie 💜
• -f, --force — attempt disable-region even though memory can't be offlined successfully. heads up though: it will emit a warning that the operation will permanently leak physical address space and that it cannot be recovered until a reboot 😭 like, actually permanent, not just for the plot.
• -d, --decoder= — the root decoder to limit the operation to. only regions that are children of the specified decoder will be acted upon. main character decoder only 👑
• --debug — turn on additional debug messages, including library debug. for the girlies who need to see everything 🔥

fr fr, read the -f warning again. leaking physical address space with no recovery until reboot is not a cute look unless you mean it 🙈

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🌈 COPYRIGHT 🌈

Copyright © 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2 http://gnu.org/licenses/gpl.html. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

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🧚 SEE ALSO 🧚

cxl-list(1), cxl-enable-region(1)

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okay that's the whole page, bestie — this one came from the cxl manual and it's dated 2026-06-30. go forth and disable responsibly 💖🎀🦋