Explore • Red Hat Aiming To Address IBRS Mitigation Still Being Too Costly On Performance

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Phoronix

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people 189 subscribers • Linux Hardware Reviews, Open-Source Benchmarks & Linux Performance

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Red Hat Aiming To Address IBRS Mitigation Still Being Too Costly On Performance

news.movim.eu / Phoronix • 19 June, 2023

Red Hat engineers are working to deal with Indirect Branch Restricted Speculation (IBRS) being too costly for mitigating Spectre V2 and Retbleed on older Intel Xeon Scalable processors. A new patch has been floated to disable IBRS when idle and is working out well at least for Red Hat Enterprise Linux 9 while isn't clear yet if it will be accepted into the upstream kernel...

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