this post was submitted on 12 Dec 2025
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Linux Patches Fix eMMC Secure Erase Of 1GB Taking ~10 Minutes To Now Just 2 Seconds (www.phoronix.com)
submitted 1 day ago by cm0002@digipres.cafe to c/linux@programming.dev
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A new patch series from an NXP engineer optimizes the secure erase performance for certain Kingston eMMC devices. Currently with the Linux kernel performing a secure erase on 1GB of data can take around ten minutes. With these new patches that 1GB secure erase can be done in around two seconds.

Some Kingston eMMC devices will consume a fixed two seconds per secure erase operation regardless of the erase size. When the Linux kernel is currently performing a secure erase it is limited by the max discard size and thus will issue around 300 operations to erase 1GB. Today's patches from NXP engineer Luke Wang will drop that secure erase process into a single command and thus consuming just around two seconds of time.

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