Hi there, I would like to implement a command , to be able to disable all variants(or at least the ones causing performance impact). As per the RH article: https://access.redhat.com/articles/3311301, we would be able to only disable spectre variant 2 and 3(pti). I need an option to disable variant 1, 3a and 4 as well. Some of the recent articles suggest that options like no_spectre_v1, no_spectre_v2 and spec_store_bypass_disable parameters are available in latest versions of kernel(4.15 and above). https://www.zdnet.com/article/linux-kernel-gets-another-option-to-disable-spectre-mitigations/ https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html?highlight=kernel%20parameters Can this be made available in our Centos 7 kernels? Or is there any plan for RH to implement the same in any future release? Regards, Nupur -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-devel/attachments/20190226/49d3b2ba/attachment-0007.html>