Bug 726280 - Haswell new instructions support for KVM
Summary: Haswell new instructions support for KVM
Keywords:
Status: CLOSED DUPLICATE of bug 726281
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: kernel
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Red Hat Kernel Manager
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-07-28 04:20 UTC by Don Dugger
Modified: 2014-07-25 03:23 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-09-23 13:55:59 UTC
Target Upstream Version:


Attachments (Terms of Use)

Description Don Dugger 2011-07-28 04:20:53 UTC
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

Comment 1 Chuck Ebbert 2011-09-23 13:55:59 UTC

*** This bug has been marked as a duplicate of bug 726281 ***


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