Public bug reported: Description: CPX, SNR and ICX support MBA_CFG MSR 0xC84. Bit0 defines whether two threads sharing a core with different MBM constraints.
MSR is model specific (becomes architectural in SPR). So need family/model/stepping checks. 0: pick the MAX of the delay values 1: pick the MIN of the delay values Linux needs a file in resctrl file system to allow user to pick desired behavior. Unclear from docs seen so far whether this MSR is scoped per core or per package. But probably just want to provide a system-wide MIN vs. MAX choice. Target Release: 20.10 Target Kernel: TBD ** Affects: intel Importance: Undecided Status: New ** Affects: ubuntu Importance: Undecided Status: New ** Tags: intel-kernel-20.10 ** Also affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880493 Title: [[CLX] RDT MBA min/max control To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1880493/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs