Bug 699984

Summary: Enable virtio-pci and virtio-net drivers in kernel-rt
Product: Red Hat Enterprise MRG Reporter: Richard W.M. Jones <rjones>
Component: realtime-kernelAssignee: Red Hat Real Time Maintenance <rt-maint>
Status: CLOSED WONTFIX QA Contact: David Sommerseth <davids>
Severity: medium Docs Contact:
Priority: medium    
Version: DevelopmentCC: bhu, jzheng, leiwang, lgoncalv, ltoscano, mbooth, ovasik, rjones, williams
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 670942 Environment:
Last Closed: 2011-07-12 14:19:47 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 671082    
Bug Blocks: 670942    

Description Richard W.M. Jones 2011-04-27 07:39:48 UTC 
+++ This bug was initially created as a clone of Bug #670942 +++

Description of problem:
Currently kernel-rt (from MRG packages) does not work with libguestfs (i.e. libguestfs-test-tool fails (or most probably kernel-rt breaks libguestfs). libguestfs always chooses the latest available kernel, maybe it should not use any kernel-rt.

Version-Release number of selected component (if applicable):
kernel-rt-2.6.33.7-rt29.45
python-libguestfs-1.2.7-1.el5.8
libguestfs-1.2.7-1.el5.8

--- Additional comment from rjones on 2011-01-19 14:05:29 EST ---

Thanks.

The problem is the -rt kernel is compiled without support
for any virtio (in particular virtio-net and virtio-blk).
This is not particularly surprising given the target of
-rt kernels is not virt.

--- Additional comment from ltoscano on 2011-01-20 04:28:46 EST ---

# grep VIRTIO /boot/config-2.6.33.7-rt29.45.el5rt
# CONFIG_VIRTIO_PCI is not set
# CONFIG_VIRTIO_BALLOON is not set
Comment 1 Richard W.M. Jones 2011-07-12 09:26:19 UTC 
4 months later.  Any comments on this?
Comment 2 Clark Williams 2011-07-12 14:19:47 UTC 
We do not support virtualization in the RT kernel, either as a host or as a guest. If we turn these on, it implies support, so we cannot.