Linux 6.12-rc5 Disabling Intels Linear Address Masking "LAM" Due To Security Concerns

Posted by Scott_Ruecker on Oct 28, 2024 6:39 PM EDT
Phoronix; By Michael Larabel 		Mail this story
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Intel merged Linear Address Masking into the Linux kernel last year as a means of allowing user-space to store metadata within some bits of pointers without masking it out before use. LAM can be useful for virtual machines, sanitizers / profiling / memory tagging, and other uses.

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