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Linux BHI Mitigation Being Tweaked Following 12% Database Performance Hit
A new set of Linux kernel patches were sent out on Friday for tweaking th Native BHI mitigation introduced earlier this month for Intel processors.
A new set of Linux kernel patches were sent out on Friday for tweaking th Native BHI mitigation introduced earlier this month for Intel processors. These latest BHI patches also add a "spectre_bhi=vmexit" kernel option if only wanting the software mitigation for applying to VM exit from virtual machines but still being vulnerable to system call attacks. This spectre_bhi=vmexit option may be useful for older Intel Xeon servers mostly hosting VMs/guests and wanting to bypass any system call performance overhead.
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