Linux 6.4-rc4 Released As A "Fairly Normal" Release
Due to Linus Torvalds traveling over this US Memorial Day weekend, he released Linux 6.4-rc4 about twelve hours ahead of schedule.
Source: phoronix.com
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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.
Source: phoronix.com
Linux To Disable PCID For Intel Alder Lake & Raptor Lake Due To Issue With INVLPG
A patch is pending via x86/urgent to workaround an issue with Intel Alder Lake and Raptor Lake processors that is leaving the kernel developers for the time being to disable Process Context Identifiers (PCID) with these Intel mobile/desktop processors.
Source: phoronix.com