Right away I notice some commits which look to be fixes for commits in this series:
f34902c5c6c0 "x86/hibernate/64: Mask off CR3's PCID bits in the saved CR3" c7ad5ad297e6 "x86/mm/64: Initialize CR4.PCIDE early" a2105f8a9c38 "tools headers: Sync cpu features kernel ABI headers with tooling headers" 72c0098d92ce "x86/mm: Reinitialize TLB state on hotplug and resume" -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1718825 Title: [Feature] Cristal Ridge: x86 Process Context IDentifiers (PCID) support for OSV Status in intel: New Status in linux package in Ubuntu: Triaged Bug description: Description: The mapping from virtual address to physical address will be stored in someplace called TLB, CPU need to occasionally flush TLB for different reasons, the flush will impact all process address mapping, with PCID support, the impact will be minimal, this will bring overcall performance boost. The commits comes from Andy Lutomirski(not Intel), which is quite recent, on July 5 2017. Part1: 660da7c9228f x86/mm: Enable CR4.PCIDE on supported systems 0790c9aad849 x86/mm: Add the 'nopcid' boot option to turn off PCID cba4671af755 x86/mm: Disable PCID on 32-bit kernels 43858b4f25cf x86/mm: Stop calling leave_mm() in idle code 94b1b03b519b x86/mm: Rework lazy TLB mode and TLB freshness tracking b0579ade7cd8 x86/mm: Track the TLB's tlb_gen and update the flushing algorithm f39681ed0f48 x86/mm: Give each mm TLB flush generation a unique ID Part2: 10af6235e0d3 x86/mm: Implement PCID based optimization: try to preserve old TLB entries using PCID Target Release: 17.10 Kernel: 4.14 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1718825/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
