Bug 518337

Summary: /proc/cpuinfo does not list all CPU flags presented by CPU
Product: Red Hat Enterprise Linux 5 Reporter: Prarit Bhargava <prarit>
Component: kvmAssignee: john cooper <john.cooper>
Status: CLOSED DUPLICATE QA Contact: Lawrence Lim <llim>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 5.4CC: azarembo, bnagendr, danken, dzickus, iheim, jvillalo, luyu, nobody, riek, tburke, tools-bugs, virt-maint, ykaul
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 517928 Environment:
Last Closed: 2009-11-29 14:39:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 517928    
Bug Blocks:    
Attachments:
Description Flags
RHEL5 fix for this issue none

Comment 1 Prarit Bhargava 2009-08-19 22:09:51 UTC 
This is the kvm portion of bug 517928.

(In reply to comment #10)
> we should also add these flags to arch/x86/kvm/x86.c if we
> want them to be exposed to guests and actually used

I have to retract that part; if specified on the command line, a flag is exposed to guest no matter if kvm considers it "supported" or not. Adding these flags to qemu's target-i386/helper.c should be enough.
Comment 2 Prarit Bhargava 2009-08-19 22:12:26 UTC 
Created attachment 358003 [details]
RHEL5 fix for this issue

The flags are defined, however, sse4_1 and sse4_2 strings are not.

I have not tested or compiled this patch.

P.
Comment 3 Dor Laor 2009-11-29 14:39:27 UTC 

*** This bug has been marked as a duplicate of bug 518090 ***