Linux 6.4 Lands Intel Alder Lake / Raptor Lake Workaround For INVLPG/PCID Bug

The bug I wrote about this weekend where Intel is now disabling PCID for Alder Lake and Raptor Lake under Linux until updated CPU microcode is issued for addressing an issue with the INVLPG instruction when Process Context Identifiers are enabled, has now been merged to Linux 6.4...