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

[phoronix]

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?page=news_item&px=Linux-PR_SPEC_DISABLE_NOEXEC

[andrei_me]

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