RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

This bug was initially created as a copy of Bug #1674411

I am copying this bug because: 



Description of problem:
add support for cascade lake cpu to rhel7

Feature Description:
       Introduce new cpu model in qemu-kvm for Cascade platform.

       instructions detailed info, please ref https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf

*** Bug 1674414 has been marked as a duplicate of this bug. ***

Hi,

I found the patchset to support Cascadelake, and it seems to be ignored.
https://www.redhat.com/archives/libvir-list/2018-November/msg00967.html

Patch series adding Cascadelake CPU model and support for MSR features was
sent upstream for review:

https://www.redhat.com/archives/libvir-list/2019-April/msg00529.html

This will be addressed in next major release of RHEL.

*** Bug 1758359 has been marked as a duplicate of this bug. ***

Adding Known Issue Doc Text, to make sure the consequences of not having arch-capabilities available are documented.

Based on latest consensus customers will have to use cpu host-passthrough if they require Cascade-Lake capabilities. Closing for RHEL-7.