Bug 1096769 - [RFE] RHEV: Permit exposing "hv_relaxed" to RHEV Virtual Machines
Summary: [RFE] RHEV: Permit exposing "hv_relaxed" to RHEV Virtual Machines
Keywords:
Status: CLOSED DUPLICATE of bug 1083529
Alias: None
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: ovirt-engine-webadmin-portal
Version: 3.3.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
: ---
Assignee: Nobody
QA Contact: Pavel Stehlik
URL:
Whiteboard: virt
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-05-12 12:05 UTC by Evgheni Dereveanchin
Modified: 2019-04-28 09:25 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-05-14 19:56:16 UTC
oVirt Team: ---
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Evgheni Dereveanchin 2014-05-12 12:05:48 UTC 
Description of problem:

There is no possibility to present CPU flags to VMs (specifically "hv_relaxed" which Windows 7/2012 VMs use to disable timers and thus avoid BSoD)

Version-Release number of selected component (if applicable):
RHEV 3.3

Requested enhancement:
 Ability to pass hv_relaxed CPU flag to VM from the Administrator Portal in the VM settings page
Comment 2 Doron Fediuck 2014-05-13 05:22:33 UTC 
RHEV supports qemu's flags passthrough using -cpu host, which
should resolve this issue.

Can you please verify using "Use Host CPU" in the host side-tab of
the edit VM dialog?
Comment 3 Evgheni Dereveanchin 2014-05-13 07:37:08 UTC 
hv_relaxed is a virtual CPU flag, it is not present on the actual physical CPU. It is added just to "Enlighten" a Windoes VM that it is a guest. QEMU supports that flag since RHEL 6.4 as a result of BZ#801196.
Comment 6 Itamar Heim 2014-05-14 19:56:16 UTC 

*** This bug has been marked as a duplicate of bug 1083529 ***
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