Bug 880485

Summary:	RHEL7 qemu-kvm should provide RHEL6-compatible and RHEL7-specific machine types
Product:	Red Hat Enterprise Linux 7	Reporter:	juzhang <juzhang>
Component:	qemu-kvm	Assignee:	Luiz Capitulino <lcapitulino>
Status:	CLOSED DUPLICATE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	areis, ehabkost, juzhang, knoel, michen, mst, pbonzini, qzhang, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-04-18 18:20:30 UTC	Type:	Bug
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:	960216
Bug Blocks:	720747, 895240

Description juzhang 2012-11-27 05:32:42 UTC

Description of problem:


Version-Release number of selected component (if applicable):
qemu-kvm-1.2.0-20.el7.x86_64


How reproducible:
100%

Steps to Reproduce:
1.#/usr/libexec/qemu-kvm -M ?

2.
3.
  
Actual results:
Supported machines are:
none                 empty machine
pc                   Standard PC (alias of pc-1.2)
pc-1.2               Standard PC (default)
pc-1.1               Standard PC
pc-1.0               Standard PC
pc-0.15              Standard PC
pc-0.14              Standard PC
pc-0.13              Standard PC
pc-0.12              Standard PC
pc-0.11              Standard PC, qemu 0.11
pc-0.10              Standard PC, qemu 0.10
isapc                ISA-only PC


Expected results:
/usr/libexec/qemu-kvm -M ?
Supported machines are:
pc         RHEL 6.4.0 PC (alias of rhel7.0.0)
rhel7.0.0  RHEL 7.0.0 PC (default)
.......


Additional info:
I tried latest qemu(1.3rc1) upstream, the result is not friendly.
#./qemu-system-x86_64 -M ?
Supported machines are:
none                 empty machine
pc                   Standard PC (alias of pc-1.3)
pc-1.3               Standard PC (default)
pc-1.2               Standard PC
pc-1.1               Standard PC
pc-1.0               Standard PC
pc-0.15              Standard PC
pc-0.14              Standard PC
pc-0.13              Standard PC
pc-0.12              Standard PC
pc-0.11              Standard PC, qemu 0.11
pc-0.10              Standard PC, qemu 0.10
isapc                ISA-only PC
q35                  Q35 chipset PC (alias of q35-next)
q35-next             Q35 chipset PC

Comment 1 Luiz Capitulino 2012-11-27 19:37:46 UTC

I believe that the RHEL machine types will only be created when we fork qemu 1.3 for RHEL, which should happen soon.

CC'ing a few folks who are more familiar with the RHEL machine types than me, so that then can chime in if necessary (or even take the bz).

Comment 2 Eduardo Habkost 2012-11-28 13:10:45 UTC

True. We won't create the rhel7.0.0 machine-type until we create a RHEL7-specific tree, after QEMU 1.3 is released. When we do that, it will probably be based on the existing "pc-1.3" machine-type.

Comment 3 Paolo Bonzini 2013-03-15 10:59:56 UTC

Additional note from Markus:

> Enabling/disabling KVM is guest-visible upstream.  With KVM disabled,
> you get a flash memory device.  With KVM enabled, you get a ROM.  Not
> good; KVM should be as transparent as possible to the guest.
>
> Looks like we should set "pc-sysfw" property "rom_only" to 1 for all
> RHEL machine types.

Comment 4 Luiz Capitulino 2013-04-18 18:20:30 UTC

Talked with Eduardo about this BZ and he suggested closing this as a dupe of bug 889670 because we need the missing machine types to support migration to RHEL7.0.

*** This bug has been marked as a duplicate of bug 889670 ***