Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
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.
1. Feature Overview:
a) Name of feature:
Haswell new instructions
b) Feature Description:
Haswell CPU will support more new instructions. For example,
- FP fused Multiply Add
- 256-bit Integer vectors
- MOVBE support
- HLE/HLE+
- etc.
We need expose these features to guest. So, modern guest can use these new
instructiosn. Furthermore, we will use some of these new instructions to
improve the efficiency of KVM.
2. Feature Details:
a) Architectures:
64-bit Intel EM64T/AMD64
b) Bugzilla Dependencies:
c) Drivers or hardware dependencies:
d) Upstream acceptance information:
e) External links:
f) Severity (H,M,L):
Medium
g) Feature Needed by:
Q4 2011
3. Business Justification:
a) Why is this feature needed?
Performance enhancements for KVM
b) What hardware does this enable?
Haswell
c) Business impact?
d) Other business drivers:
4. Primary contact at Red Hat, email, phone (chat)
Donald Dugger
donald.d.dugger
303/443-3786
5. Primary contact at Partner, email, phone (chat)
Keve Gabbert
keve.a.gabbert
Phone Number: +1 503 264 7597