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Linux Kernel Getting New Option So SSBD Isn't Over-Protective - Helping Performance

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  • Linux Kernel Getting New Option So SSBD Isn't Over-Protective - Helping Performance

    Phoronix: Linux Kernel Getting New Option So SSBD Isn't Over-Protective - Helping Performance

    For the Linux kernel's Speculative Store Bypass Disable (SSBD) handling for Spectre Variant 4 protection is support for processes opting into force disabling of speculation via a prctl() interface. Currently when speculation is disabled, that is carried through to new processes started via the execve() system call. But a new bit will allow clearing that state when a new program is started by a process otherwise relying upon PR_SPEC_DISABLE, in what will help the performance in such cases...

    http://www.phoronix.com/scan.php?pag...DISABLE_NOEXEC

  • #2
    Like if you read SSD instead of SSBD on the headline (y)

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