Some information for Linux, from LWN.net (https://lwn.net/Articles/788381/): "See this page from the kernel documentation (https://www.kernel.org/doc/html/latest/x86/mds.html#mds) for a fairly detailed description of the problem, and this page (https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/m...) for mitigation information."