Thanks for correcting pkg names. No upstream commits yet. Target Linux 5.19 timeframe. Target Ubuntu 23.04.
Platform is Sapphire Rapids -- 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/1954466 Title: KVM Protection Keys for Supervisor Pages (PKS) Status in linux package in Ubuntu: Incomplete Bug description: SKX introduced the Protection Key for User Pages (PKU) feature enabling fast, thread-specific manipulation of permission restrictions on user pages. SPR introduced Protection Key for Supervisor Pages(PKS), a new feature that extends the Protection Key architecture to support thread-specific permission restrictions on supervisor pages. This important feature enables enhanced access control on memory, and brings more valid usage model. Generally PKS enables protections on 'domains' of supervisor pages to limit supervisor mode access to pages beyond the normal paging protections(U/S, R/W, P). PKS works in a similar fashion to user space pkeys, PKU. As with PKU, supervisor pkeys are checked in addition to normal paging protections and Access or Writes can be disabled via a MSR update without TLB flushes when permissions change. PKS virtualization enabling should base on existing PKU code. Major works: CPUID exposure New CR4 bit exposure New VMCS fields enabling IA32_PKRS saving/restoring #GP handling Target Linux 5.19 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1954466/+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
