The new interface is queued for v4.9 in linux-next, please evaluate whether it could be backported into 16.10. 7d06d9c9bd813fc956b9c7bffc1b9724009983eb e8c6226d483cb28f55cab718065ea1b7226d40e8 f9afc6197e9bba1e2e62e262704f661810cc8bba a8502b67d739c1d7a4542c1da0a5d98a6a58c177 a60f7b69d92c0142c80a30d669a76b617b7f6879 e8c24d3a23a469f1f40d4de24d872ca7023ced0a c74fe3940848c6afea83bfbda64a9baf9da547c8 acd547b29880800d29222c4632d2c145e401988c 76de993727d22eb29c716abacfae9d9444bb7897 5f23f6d082a95237387f18d3fde8d472aae9659a
-- 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/1591804 Title: [Feature] Purley: Memory Protection Keys Status in intel: New Status in linux package in Ubuntu: Incomplete Bug description: Memory Protection Keys for Userspace (PKU aka PKEYs) is a Skylake-SP server feature that provides a mechanism for enforcing page-based protections, but without requiring modification of the page tables when an application changes protection domains. It works by dedicating 4 previously ignored bits in each page table entry to a "protection key", giving 16 possible keys. There is also a new user-accessible register (PKRU) with two separate bits (Access Disable and Write Disable) for each key.Being a CPU register, PKRU is inherently thread-local,potentially giving each thread a different set of protectionsfrom every other thread. There are two new instructions (RDPKRU/WRPKRU) for reading and writing to the new register. The feature is only available in 64-bit mode, even though there is theoretically space in the PAE PTEs. These permissions are enforced on data access only and have no effect on instruction fetches. HW: Purley Upstream status: v4.6 kernel implement basic and execute-only support v4.9 kernel will have new interface To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1591804/+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