VMware ran tests on kernel 5.19 and saw some nasty numbers. Meanwhile progress on version 6.0 is steady
But many VMware users will likely have Skylake CPUs in production, or use them in clouds. Assuming those users have adopted version 5.19 of the kernel – which may not be likely – they have a choice to make. Do they take the performance hit, or do they decide that Retbleed, like its predecessors, is not easy to exploit and wear the risk of running without mitigation?
Or might the issues caused by the fix hasten some migration decisions? Maybe even migration to VMware'sWe believe these findings would be useful to the Linux community and wanted to document the same. Might that be a call for the community to revisit the Retbleed fixes and make them a little more subtle?
One key member of the Linux community, emperor penguin Linus Torvalds, appears not to concerned by the situation. He's not commented on Jagatheesan's thread – which is not unusual – and his weekly state of the kernelProgress on that release is"fairly normal," Torvalds wrote."Nothing looks particularly scary, so jump right in." ®
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